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10-Q

Main Street Capital CORP (MAIN)

10-Q 2020-08-07 For: 2020-06-30
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TABLE OF CONTENTS

Table of Contents

UNITED STATESSECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

FORM 10-Q

(Mark One)
ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2020
OR
o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition periodfrom:            to

Commission File Number: 001-33723

Main Street Capital Corporation (Exact name of registrant as specified in its charter)

Maryland<br><br>(State or other jurisdiction of<br><br>incorporation or organization) 41-2230745<br><br>(I.R.S. Employer<br><br>Identification No.)
1300 Post Oak Boulevard, 8^th^ FloorHouston, TX (Address of principal executive offices) 77056<br><br>(Zip Code)

(713) 350-6000

(Registrant's telephone number including area code)

n/a

(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class Trading Symbol Name of Each Exchange on WhichRegistered
Common Stock, par value $0.01 per share MAIN New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý    No o

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes o    No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer ý Accelerated filer o Non-accelerated filer o Smaller reporting company o <br>Emerging growth company o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o    No ý

The number of shares outstanding of the issuer's common stock as of August 6, 2020 was 65,865,341.

Table of Contents

TABLE OF CONTENTS

PART I FINANCIAL INFORMATION

Item 1. Consolidated Financial Statements
Consolidated Balance Sheets—June 30, 2020 (unaudited) and December 31, 2019 1
Consolidated Statements of Operations (unaudited)—Three and six months ended June 30, 2020 and 2019 2
Consolidated Statements of Changes in Net Assets (unaudited)—Six months ended June 30, 2020 and 2019 3
Consolidated Statements of Cash Flows (unaudited)—Six months ended June 30, 2020 and 2019 4
Consolidated Schedule of Investments (unaudited)—June 30, 2020 5
Consolidated Schedule of Investments—December 31, 2019 30
Notes to Consolidated Financial Statements (unaudited) 56
Consolidated Schedules of Investments in and Advances to Affiliates (unaudited)—Six months ended June 30, 2020 and<br>2019 98
Item 2. Management's Discussion and Analysis of Financial Condition and Results of<br>Operations 108
Item 3. Quantitative and Qualitative Disclosures about Market Risk 132
Item 4. Controls and Procedures 133

PART II OTHER INFORMATION

Item 1. Legal Proceedings 134
Item 1A. Risk Factors 134
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds 134
Item 6. Exhibits 135
Signatures 136

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Balance Sheets

(dollars in thousands, except shares and per share amounts)

June 30,2020 December 31,2019
(Unaudited)
ASSETS
Investments at fair value:
Control investments (cost: 796,019 and 778,367 as of June 30, 2020 and December 31, 2019, respectively) $ 1,008,139 $ 1,032,721
Affiliate investments (cost: 372,475 and 351,764 as of June 30, 2020 and December 31, 2019, respectively) 321,709 330,287
Non-Control/Non-Affiliate investments (cost: 1,257,360 and 1,297,587 as of June 30, 2020 and December 31, 2019, respectively) 1,089,705 1,239,316
​ ​ ​ ​ ​ ​ ​
Total investments (cost: 2,425,854 and 2,427,718 as of June 30, 2020 and December 31, 2019, respectively) 2,419,553 2,602,324
Cash and cash equivalents 68,539 55,246
Interest receivable and other assets 48,865 50,458
Receivable for securities sold 5,650 —
Deferred financing costs (net of accumulated amortization of 7,981 and 7,501 as of June 30, 2020 and December 31, 2019, respectively) 3,188 3,521
​ ​ ​ ​ ​ ​ ​
Total assets $ 2,545,795 $ 2,711,549
​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​
LIABILITIES
Credit facility $ 315,000 $ 300,000
SBIC debentures (par: 314,800 (50,000 due within one year) and 311,800 as of June 30, 2020 and December 31, 2019, respectively) 308,814 306,188
5.20% Notes due 2024 (par: 325,000 as of both June 30, 2020 and December 31, 2019) 324,541 324,595
4.50% Notes due 2022 (par: 185,000 as of both June 30, 2020 and December 31, 2019) 183,533 183,229
Accounts payable and other liabilities 17,038 24,532
Payable for securities purchased 4,568 —
Interest payable 7,494 7,292
Dividend payable 13,474 13,174
Deferred tax liability, net 389 16,149
​ ​ ​ ​ ​ ​ ​
Total liabilities 1,174,851 1,175,159
Commitments and contingencies (Note K)
NET ASSETS
Common stock, 0.01 par value per share (150,000,000 shares authorized; 65,748,805 and 64,241,341 shares issued and outstanding as of June 30, 2020 and December 31, 2019, respectively) 658 643
Additional paid-in capital 1,554,928 1,512,435
Total undistributed (overdistributed) earnings (184,642 ) 23,312
​ ​ ​ ​ ​ ​ ​
Total net assets 1,370,944 1,536,390
​ ​ ​ ​ ​ ​ ​
Total liabilities and net assets $ 2,545,795 $ 2,711,549
​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​
NET ASSET VALUE PER SHARE $ 20.85 $ 23.91
​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​

All values are in US Dollars.

The accompanying notes are an integral part of these consolidated financial statements

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Statements of Operations

(dollars in thousands, except shares and per share amounts)

(Unaudited)

Three Months EndedJune 30, Six Months EndedJune 30,
2020 2019 2020 2019
INVESTMENT INCOME:
Interest, fee and dividend income:
Control investments $ 19,327 $ 23,617 $ 38,800 $ 47,308
Affiliate investments 7,207 8,346 15,371 17,417
Non-Control/Non-Affiliate investments 25,473 29,330 53,985 57,932
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total investment income 52,007 61,293 108,156 122,657
EXPENSES:
Interest (11,898 ) (12,329 ) (24,338 ) (24,245 )
Compensation (4,802 ) (5,516 ) (7,300 ) (11,585 )
General and administrative (3,000 ) (3,160 ) (6,473 ) (6,363 )
Share-based compensation (2,817 ) (2,378 ) (5,654 ) (4,707 )
Expenses allocated to the External Investment Manager 1,804 1,707 3,448 3,350
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total expenses (20,713 ) (21,676 ) (40,317 ) (43,550 )
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
NET INVESTMENT INCOME 31,294 39,617 67,839 79,107
NET REALIZED GAIN (LOSS):
Control investments 1,606 (756 ) (19,866 ) (943 )
Affiliate investments — 789 (235 ) (2,452 )
Non-Control/Non-Affiliate investments (10,190 ) (2,587 ) (10,348 ) (4,892 )
Realized loss on extinguishment of debt — — (534 ) (5,689 )
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total net realized loss (8,584 ) (2,554 ) (30,983 ) (13,976 )
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
NET UNREALIZED APPRECIATION (DEPRECIATION):
Control investments (6,825 ) 10,137 (42,235 ) 15,083
Affiliate investments (8,123 ) (568 ) (29,289 ) 1,808
Non-Control/Non-Affiliate investments 28,112 (4,712 ) (109,620 ) (810 )
SBIC debentures — (233 ) 460 4,945
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total net unrealized appreciation (depreciation) 13,164 4,624 (180,684 ) 21,026
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
INCOME TAXES:
Federal and state income, excise and other taxes (550 ) (963 ) (255 ) (1,665 )
Deferred taxes 8,045 (2,470 ) 16,015 (4,837 )
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Income tax benefit (provision) 7,495 (3,433 ) 15,760 (6,502 )
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $ 43,369 $ 38,254 $ (128,068 ) $ 79,655
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
NET INVESTMENT INCOME PER SHARE—BASIC AND DILUTED $ 0.48 $ 0.63 $ 1.04 $ 1.27
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS PER SHARE—BASIC AND DILUTED $ 0.66 $ 0.61 $ (1.97 ) $ 1.28
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
WEIGHTED AVERAGE SHARES OUTSTANDING—BASIC AND DILUTED 65,303,580 62,880,035 64,920,025 62,375,166

The accompanying notes are an integral part of these consolidated financial statements

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Statements of Changes in Net Assets

(dollars in thousands, except shares)

(Unaudited)

Common Stock
TotalUndistributed(Overdistributed)Earnings
Numberof Shares ParValue AdditionalPaid-InCapital Total NetAsset Value
Balances at December 31, 2018 61,264,861 $ 613 $ 1,409,945 $ 65,491 $ 1,476,049
Public offering of common stock, net of offering costs 960,684 9 35,376 — 35,385
Share-based compensation — — 2,329 — 2,329
Dividend reinvestment 96,189 1 3,595 — 3,596
Amortization of directors' deferred compensation — — 216 — 216
Issuance of restricted stock 52,043 1 (1 ) — —
Dividends to stockholders — — 70 (36,549 ) (36,479 )
Net increase resulting from operations — — — 41,401 41,401
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Balances at March 31, 2019 62,373,777 $ 624 $ 1,451,530 $ 70,343 $ 1,522,497
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Public offering of common stock, net of offering costs 245,989 2 9,416 — 9,418
Share-based compensation — — 2,378 — 2,378
Purchase of vested stock for employee payroll tax withholding (90,404 ) (1 ) (3,364 ) — (3,365 )
Dividend reinvestment 133,128 1 5,392 — 5,393
Amortization of directors' deferred compensation — — 216 — 216
Issuance of restricted stock, net of forfeited shares 262,642 3 (3 ) — —
Dividends to stockholders — — 114 (53,823 ) (53,709 )
Net increase resulting from operations — — — 38,254 38,254
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Balances at June 30, 2019 62,925,132 $ 629 $ 1,465,679 $ 54,774 $ 1,521,082
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Balances at December 31, 2019 64,252,937 $ 643 $ 1,512,435 $ 23,312 $ 1,536,390
Public offering of common stock, net of offering costs 91,458 1 3,854 — 3,855
Share-based compensation — — 2,837 — 2,837
Purchase of vested stock for employee payroll tax withholding (851 ) — (29 ) — (29 )
Dividend reinvestment 108,722 1 3,929 — 3,930
Amortization of directors' deferred compensation — — 238 — 238
Issuance of restricted stock, net of forfeited shares 10,383 — — — —
Dividends to stockholders — — 93 (39,706 ) (39,613 )
Net decrease resulting from operations — — — (171,438 ) (171,438 )
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Balances at March 31, 2020 64,462,649 $ 645 $ 1,523,357 $ (187,832 ) $ 1,336,170
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Public offering of common stock, net of offering costs 824,968 9 26,007 — 26,016
Share-based compensation — — 2,817 — 2,817
Purchase of vested stock for employee payroll tax withholding (84,094 ) (1 ) (1,730 ) — (1,731 )
Dividend reinvestment 146,229 1 4,158 — 4,159
Amortization of directors' deferred compensation — — 224 — 224
Issuance of restricted stock, net of forfeited shares 414,053 4 (4 ) — —
Dividends to stockholders — — 99 (40,179 ) (40,080 )
Net increase resulting from operations — — — 43,369 43,369
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Balances at June 30, 2020 65,763,805 $ 658 $ 1,554,928 $ (184,642 ) $ 1,370,944
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

The accompanying notes are an integral part of these consolidated financial statements

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Statements of Cash Flows

(dollars in thousands)

Six Months EndedJune 30,
2020 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net increase (decrease) in net assets resulting from operations $ (128,068 ) $ 79,655
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating<br>activities:
Investments in portfolio companies (264,289 ) (301,298 )
Proceeds from sales and repayments of debt investments in portfolio companies 220,339 220,925
Proceeds from sales and return of capital of equity investments in portfolio companies 15,341 18,169
Net unrealized (appreciation) depreciation 180,684 (21,026 )
Net realized loss 30,983 13,976
Accretion of unearned income (5,959 ) (5,997 )
Payment-in-kind interest (1,883 ) (2,502 )
Cumulative dividends (1,022 ) (1,350 )
Share-based compensation expense 5,654 4,707
Amortization of deferred financing costs 1,353 1,790
Deferred tax (benefit) provision (16,015 ) 4,837
Changes in other assets and liabilities:
Interest receivable and other assets 7,626 (6,792 )
Interest payable 202 2,115
Accounts payable and other liabilities (7,032 ) 4,085
Deferred fees and other 1,791 1,226
​ ​ ​ ​ ​ ​ ​ ​
Net cash provided by operating activities 39,705 12,520
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from public offering of common stock, net of offering costs 29,871 44,803
Proceeds from public offering of 5.20% Notes due 2024 — 250,000
Dividends paid (71,305 ) (80,247 )
Proceeds from issuance of SBIC debentures 25,000 —
Repayments of SBIC debentures (22,000 ) (24,000 )
Proceeds from credit facility 184,000 201,000
Repayments on credit facility (169,000 ) (380,000 )
Payment of deferred issuance costs and SBIC debenture fees (1,218 ) (4,344 )
Purchases of vested stock for employee payroll tax withholding (1,760 ) (3,365 )
​ ​ ​ ​ ​ ​ ​ ​
Net cash provided by (used in) financing activities (26,412 ) 3,847
​ ​ ​ ​ ​ ​ ​ ​
Net increase in cash and cash equivalents 13,293 16,367
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 55,246 54,181
​ ​ ​ ​ ​ ​ ​ ​
CASH AND CASH EQUIVALENTS AT END OF PERIOD $ 68,539 $ 70,548
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
Supplemental cash flow disclosures:
Interest paid $ 22,722 $ 20,279
Taxes paid $ 1,783 $ 1,672
Operating non-cash activities:
Right-of-use assets obtained in exchange for operating lease liabilities $ — $ 5,240
Non-cash financing activities:
Shares issued pursuant to the DRIP $ 8,089 $ 8,989

The accompanying notes are an integral part of these consolidated financial statements

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Control Investments(5)
Access Media Holdings, LLC(10) July 22, 2015 Private Cable Operator
10.00% PIK Secured Debt (Maturity—July 22, 2020)(14)(19) $ 23,828 $ 23,828 $ 3,937
Preferred Member Units (9,481,500 units)(24) 9,375 (284 )
Member Units (45 units) 1 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
33,204 3,653
ASC Interests, LLC August 1, 2013 Recreational and Educational Shooting Facility
<br> 13.00% Secured Debt (Maturity—July 31, 2022) 1,650 1,606 1,606
<br> Member Units (1,500 units) 1,500 1,050
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 3,106 2,656
Analytical Systems Keco, LLC August 16, 2019 Manufacturer of Liquid and Gas Analyzers
LIBOR Plus 10.00% (Floor 2.00%), Current Coupon 12.00%, Secured Debt (Maturity—August 16, 2024)(9) 5,295 4,976 4,976
Preferred Member Units (3,200 units) 3,200 3,890
Warrants (420 equivalent shares; Expiration—August 16, 2029; Strike price—0.01 per share) 316 510
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
8,492 9,376
ATS Workholding, LLC(10) March 10, 2014 Manufacturer of Machine Cutting Tools and Accessories
<br> 5% Secured Debt (Maturity—November 16, 2021) 4,919 4,729 3,965
<br> Preferred Member Units (3,725,862 units) 3,726 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 8,455 3,965
Bond-Coat, Inc. December 28, 2012 Casing and Tubing Coating Services
Common Stock (57,508 shares) 6,350 6,830
Brewer Crane Holdings, LLC January 9, 2018 Provider of Crane Rental and Operating Services
<br> LIBOR Plus 10.00% (Floor 1.00%), Current Coupon 11.00%, Secured Debt (Maturity—January 9, 2023)(9) 8,804 8,751 8,751
<br> Preferred Member Units (2,950 units)(8) 4,280 4,280
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 13,031 13,031
Bridge Capital Solutions Corporation April 18, 2012 Financial Services and Cash Flow Solutions Provider
13.00% Secured Debt (Maturity—December 11, 2024) 8,813 8,085 8,085
Warrants (82 equivalent shares; Expiration—July 25, 2026; Strike price—0.01 per share) 2,132 3,320
13.00% Secured Debt (Mercury Service Group, LLC) (Maturity—December 11, 2024) 1,000 997 997
Preferred Member Units (Mercury Service Group, LLC) (17,742 units)(8) 1,000 1,000
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
12,214 13,402
Café Brazil, LLC April 20, 2004 Casual Restaurant Group
<br> Member Units (1,233 units)(8) 1,742 2,180

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
California Splendor Holdings LLC March 30, 2018 Processor of Frozen Fruits
LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 9.50%, Secured Debt (Maturity—March 30, 2023)(9) 15,679 15,573 15,534
LIBOR Plus 10.00% (Floor 1.00%), Current Coupon 11.50%, Secured Debt (Maturity—March 30, 2023)(9) 28,000 27,827 27,762
Preferred Member Units (6,725 units)(8) 7,706 7,706
Preferred Member Units (6,157 units)(8) 10,775 5,781
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
61,881 56,783
CBT Nuggets, LLC ("CBT") June 1, 2006 Produces and Sells IT Training Certification Videos
<br> Member Units (416 units)(8) 1,300 46,060
Centre Technologies Holdings, LLC January 4, 2019 Provider of IT Hardware Services and Software Solutions
LIBOR Plus 10.00% (Floor 2.00%), Current Coupon 12.00%, Secured Debt (Maturity—January 4, 2024)(9) 11,934 11,843 11,843
Preferred Member Units (12,696 units) 5,840 5,840
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
17,683 17,683
Chamberlin Holding LLC February 26, 2018 Roofing and Waterproofing Specialty Contractor
<br> LIBOR Plus 10.00% (Floor 1.00%), Current Coupon 11.00%, Secured Debt (Maturity—February 26, 2023)(9) 17,773 17,666 17,773
<br> Member Units (4,347 units)(8) 11,440 24,150
<br> Member Units (Chamberlin Langfield Real Estate, LLC) (1,047,146 units)(8) 1,047 920
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 30,153 42,843
Charps, LLC February 3, 2017 Pipeline Maintenance and Construction
15.00% Secured Debt (Maturity—June 5, 2022) 2,000 2,000 2,000
Preferred Member Units (1,600 units)(8) 400 8,130
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
2,400 10,130
Clad-Rex Steel, LLC December 20, 2016 Specialty Manufacturer of Vinyl-Clad Metal
<br> LIBOR Plus 9.50% (Floor 1.00%), Current Coupon 10.50%, Secured Debt (Maturity—December 20, 2021)(9) 10,880 10,841 10,841
<br> Member Units (717 units)(8) 7,280 8,610
<br> 10.00% Secured Debt (Clad-Rex Steel RE Investor, LLC) (Maturity—December 20, 2036) 1,124 1,113 1,113
<br> Member Units (Clad-Rex Steel RE Investor, LLC) (800 units) 210 460
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 19,444 21,024
CMS Minerals Investments January 30, 2015 Oil & Gas Exploration & Production
Member Units (CMS Minerals II, LLC) (100 units)(8) 2,260 1,638

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Cody Pools, Inc. March 6, 2020 Designer of Residential and Commercial Pools
<br> LIBOR Plus 10.50% (Floor 1.75%), Current Coupon 12.25%, Secured Debt (Maturity—March 6, 2025)(9) 15,800 15,650 15,650
<br> Preferred Member Units (587 units) 8,317 8,317
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 23,967 23,967
CompareNetworks Topco, LLC January 29, 2019 Internet Publishing and Web Search Portals
LIBOR Plus 11.00% (Floor 1.00%), Current Coupon 12.00%, Secured Debt (Maturity—January 29, 2024)(9) 8,014 7,950 7,950
Preferred Member Units (1,975 units) 1,975 4,080
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
9,925 12,030
Copper Trail Fund Investments(12)(13) July 17, 2017 Investment Partnership
<br> LP Interests (CTMH, LP) (Fully diluted 38.8%) 762 762
Datacom, LLC May 30, 2014 Technology and Telecommunications Provider
8.00% Secured Debt (Maturity—May 31, 2021)(14) 1,800 1,800 1,615
10.50% PIK Secured Debt (Maturity—May 31, 2021)(14)(19) 12,507 12,475 10,142
Class A Preferred Member Units 1,294 —
Class B Preferred Member Units (6,453 units) 6,030 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
21,599 11,757
Digital Products Holdings LLC April 1, 2018 Designer and Distributor of Consumer Electronics
<br> LIBOR Plus 10.00% (Floor 1.00%), Current Coupon 11.00%, Secured Debt (Maturity—April 1, 2023)(9) 18,960 18,841 18,165
<br> Preferred Member Units (3,857 shares)(8) 9,501 4,595
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 28,342 22,760
Direct Marketing Solutions, Inc. February 13, 2018 Provider of Omni-Channel Direct Marketing Services
LIBOR Plus 11.00% (Floor 1.00%), Current Coupon 12.00%, Secured Debt (Maturity—February 13, 2023)(9) 15,247 15,146 15,247
Preferred Stock (8,400 shares) 8,400 20,060
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
23,546 35,307
Gamber-Johnson Holdings, LLC ("GJH") June 24, 2016 Manufacturer of Ruggedized Computer Mounting Systems
<br> LIBOR Plus 6.50% (Floor 2.00%), Current Coupon 8.50%, Secured Debt (Maturity—June 24, 2021)(9) 19,838 19,777 19,838
<br> Member Units (8,619 units)(8) 14,844 53,240
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 34,621 73,078

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Garreco, LLC July 15, 2013 Manufacturer and Supplier of Dental Products
LIBOR Plus 8.00% (Floor 1.00%, Ceiling 1.50%), Current Coupon 9.43%, Secured Debt (Maturity—January 31, 2021)(9) 4,519 4,519 4,519
Member Units (1,200 units) 1,200 1,700
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
5,719 6,219
GRT Rubber Technologies LLC ("GRT") December 19, 2014 Manufacturer of Engineered Rubber Products
<br> LIBOR Plus 7.00%, Current Coupon 7.17%, Secured Debt (Maturity—December 31, 2023) 16,775 16,775 16,775
<br> Member Units (5,879 units)(8) 13,065 45,430
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 29,840 62,205
Gulf Manufacturing, LLC August 31, 2007 Manufacturer of Specialty Fabricated Industrial Piping Products
Member Units (438 units)(8) 2,980 4,800
Gulf Publishing Holdings, LLC April 29, 2016 Energy Industry Focused Media and Publishing
<br> LIBOR Plus 9.50% (Floor 1.00%), Current Coupon 5.25% / 5.25% PIK, Current Coupon Plus PIK 10.50%, Secured Debt<br>(Maturity—September 30, 2020)(9)(19) 243 243 243
<br> 6.25% Current / 6.25% PIK Secured Debt (Maturity—April 29, 2021)(19) 12,735 12,707 11,616
<br> Member Units (3,681 units) 3,681 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 16,631 11,859
Harborside Holdings, LLC March 20, 2017 Real Estate Holding Company
Member units (100 units) 6,606 7,660
Harris Preston Fund Investments(12)(13) October 1, 2017 Investment Partnership
<br> LP Interests (2717 MH, L.P.) (Fully diluted 49.3%) 2,735 2,977
Harrison Hydra-Gen, Ltd. June 4, 2010 Manufacturer of Hydraulic Generators
Common Stock (107,456 shares)(8) 718 5,640
Jensen Jewelers of Idaho, LLC November 14, 2006 Retail Jewelry Store
<br> Prime Plus 6.75% (Floor 2.00%), Current Coupon 10.00%, Secured Debt (Maturity—November 14, 2023)(9) 3,850 3,816 3,800
<br> Member Units (627 units)(8) 811 7,270
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 4,627 11,070
J&J Services, Inc. October 31, 2019 Provider of Dumpster and Portable Toilet Rental Services
11.50% Secured Debt (Maturity—October 31, 2024) 15,200 15,065 15,200
Preferred Stock (2,814 shares) 7,085 9,900
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
22,150 25,100
KBK Industries, LLC January 23, 2006 Manufacturer of Specialty Oilfield and Industrial Products
<br> Member Units (325 units)(8) 783 13,140

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Kickhaefer Manufacturing Company, LLC October 31, 2018 Precision Metal Parts Manufacturing
9.50% Current / 2.00% PIK Secured Debt (Maturity—October 31, 2023)(19) 25,488 25,297 25,297
Member Units (581 units) 12,240 11,450
9.00% Secured Debt (Maturity—October 31, 2048) 3,964 3,924 3,924
Member Units (KMC RE Investor, LLC) (800 units)(8) 992 1,160
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
42,453 41,831
Market Force Information, LLC July 28, 2017 Provider of Customer Experience Management Services
<br> 12.00% PIK Secured Debt (Maturity—July 28, 2023)(14)(19) 26,079 25,952 14,255
<br> Member Units (743,921 units) 16,642 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 42,594 14,255
MH Corbin Holding LLC August 31, 2015 Manufacturer and Distributor of Traffic Safety Products
13.00% Secured Debt (Maturity—March 31, 2022) 8,730 8,671 8,670
Preferred Member Units (66,000 shares) 4,400 3,430
Preferred Member Units (4,000 shares) 6,000 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
19,071 12,100
Mid-Columbia Lumber Products, LLC December 18, 2006 Manufacturer of Finger-Jointed Lumber Products
<br> Member Units (7,874 units) 4,239 —
<br> Member Units (Mid-Columbia Real Estate, LLC) (500 units)(8) 1,499 2,130
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 5,738 2,130
MSC Adviser I, LLC(16) November 22, 2013 Third Party Investment Advisory Services
Member Units (Fully diluted 100.0%)(8) — 69,080
Mystic Logistics Holdings, LLC August 18, 2014 Logistics and Distribution Services Provider for Large Volume Mailers
<br> 10.00% Secured Debt (Maturity—January 17. 2022) 6,974 6,959 6,959
<br> Common Stock (5,873 shares)(8) 2,720 10,390
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 9,679 17,349
NAPCO Precast, LLC January 31, 2008 Precast Concrete Manufacturing
Member Units (2,955 units)(8) 2,975 10,930
NexRev LLC February 28, 2018 Provider of Energy Efficiency Products & Services
<br> 11.00% Secured Debt (Maturity—February 28, 2023) 17,533 17,433 15,732
<br> Preferred Member Units (86,400,000 units) 6,880 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 24,313 15,732

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
NRI Clinical Research, LLC September 8, 2011 Clinical Research Service Provider
10.50% Secured Debt (Maturity—June 8, 2022) 7,000 6,921 7,000
Warrants (251,723 equivalent units; Expiration—June 8, 2027; Strike price—0.01 per unit) 252 1,390
Member Units (1,454,167 units)(8) 765 5,321
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
7,938 13,711
NRP Jones, LLC December 22, 2011 Manufacturer of Hoses, Fittings and Assemblies
<br> 12.00% Secured Debt (Maturity—March 20, 2023) 6,376 6,376 6,376
<br> Member Units (65,962 units)(8) 3,717 3,120
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 10,093 9,496
NuStep, LLC January 31, 2017 Designer, Manufacturer and Distributor of Fitness Equipment
12.00% Secured Debt (Maturity—January 31, 2022) 19,640 19,564 19,564
Preferred Member Units (406 units) 10,200 10,200
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
29,764 29,764
OMi Holdings, Inc. April 1, 2008 Manufacturer of Overhead Cranes
<br> Common Stock (1,500 shares)(8) 1,080 18,030
Pearl Meyer Topco LLC April 27, 2020 Provider of Executive Compensation Consulting Services
12.00% Secured Debt (Maturity—April 27, 2025) 35,000 34,663 34,663
Member Units (13,800 units)(8) 13,000 13,000
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
47,663 47,663
Pegasus Research Group, LLC January 6, 2011 Provider of Telemarketing and Data Services
<br> Member Units (460 units)(8) 1,290 9,960
PPL RVs, Inc. June 10, 2010 Recreational Vehicle Dealer
LIBOR Plus 8.75% (Floor 0.50%), Current Coupon 10.18% Secured Debt (Maturity—November 15, 2022)(9) 12,105 12,004 12,004
Common Stock (1,962 shares) 2,150 11,140
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
14,154 23,144
Principle Environmental, LLC (d/b/a TruHorizon Environmental Solutions) February 1, 2011 Noise Abatement Service Provider
<br> 13.00% Secured Debt (Maturity—April 30, 2023) 6,397 6,324 6,397
<br> Preferred Member Units (19,631 units)(8) 4,600 12,910
<br> Warrants (1,018 equivalent units; Expiration—January 31, 2021; Strike price—0.01 per unit) 1,200 1,070
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 12,124 20,377
Quality Lease Service, LLC June 8, 2015 Provider of Rigsite Accommodation Unit Rentals and Related Services
Member Units (1,000 units) 11,313 5,780

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
River Aggregates, LLC March 30, 2011 Processor of Construction Aggregates
<br> Zero Coupon Secured Debt (Maturity—June 30, 2018)(17) 750 750 722
<br> Member Units (1,150 units)(8) 1,150 6,160
<br> Member Units (RA Properties, LLC) (1,500 units) 369 3,320
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 2,269 10,202
Tedder Industries, LLC August 31, 2018 Manufacturer of Firearm Holsters and Accessories
12.00% Secured Debt (Maturity—August 31, 2020) 640 640 640
12.00% Secured Debt (Maturity—August 31, 2023) 16,400 16,286 16,286
Preferred Member Units (479 units) 8,136 8,136
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
25,062 25,062
Trantech Radiator Topco, LLC May 31, 2019 Transformer Cooling Products and Services
<br> 12.00% Secured Debt (Maturity—May 31, 2024) 8,880 8,794 8,867
<br> Common Stock (615 shares)(8) 4,655 7,680
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 13,449 16,547
UnionRock Energy Fund II, LP(12)(13) June 15, 2020 Oil & Gas Exploration & Production
LP Interests (Fully diluted 49.6%) 2,894 2,894
Vision Interests, Inc. June 5, 2007 Manufacturer / Installer of Commercial Signage
<br> 13.00% Secured Debt (Maturity—September 30 2019)(17) 2,028 2,028 2,028
<br> Series A Preferred Stock (3,000,000 shares) 3,000 3,460
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 5,028 5,488
Ziegler's NYPD, LLC October 1, 2008 Casual Restaurant Group
6.50% Secured Debt (Maturity—October 1, 2020) 1,000 1,000 899
12.00% Secured Debt (Maturity—October 1, 2020) 625 625 625
14.00% Secured Debt (Maturity—October 1, 2020) 2,750 2,750 2,366
Warrants (587 equivalent units; Expiration—October 1, 2020; Strike price—0.01 per unit) 600 —
Preferred Member Units (10,072 units) 2,834 1,139
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
7,809 5,029
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Subtotal Control Investments (73.5% of net assets at fair value) $ 796,019 $ 1,008,139
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Affiliate Investments(6)
AFG Capital Group, LLC November 7, 2014 Provider of Rent-to-Own Financing Solutions and Services
10.00% Secured Debt (Maturity—May 25, 2022) 664 664 664
Preferred Member Units (186 units) 1,200 5,170
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
1,864 5,834
American Trailer Rental Group LLC June 7, 2017 Provider of Short-term Trailer and Container Rental
<br> Member Units (Milton Meisler Holdings LLC) (73,493 units) 8,596 13,060
BBB Tank Services, LLC April 8, 2016 Maintenance, Repair and Construction Services to the Above-Ground Storage Tank Market
LIBOR Plus 11.00% (Floor 1.00%), Current Coupon 12.00%, (Maturity—April 8, 2021)(9) 4,800 4,734 4,684
Preferred Stock (non-voting)(8) 141 141
Member Units (800,000 units) 800 210
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
5,675 5,035
Boccella Precast Products LLC June 30, 2017 Manufacturer of Precast Hollow Core Concrete
<br> Member Units (2,160,000 units)(8) 2,256 5,980
Buca C, LLC June 30, 2015 Casual Restaurant Group
LIBOR Plus 9.25% (Floor 1.00%), Current Coupon 10.25%, Secured Debt (Maturity—June 30, 2020)(9)(17) 19,004 19,004 17,104
Preferred Member Units (6 units; 6% cumulative)(8)(19) 4,770 765
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
23,774 17,869
CAI Software LLC October 10, 2014 Provider of Specialized Enterprise Resource Planning Software
<br> 12.50% Secured Debt (Maturity—December 7, 2023) 28,644 28,452 28,644
<br> Member Units (70,764 units)(8) 1,102 5,930
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 29,554 34,574
Chandler Signs Holdings, LLC(10) January 4, 2016 Sign Manufacturer
Class A Units (1,500,000 units) 1,500 2,540
Charlotte Russe, Inc(11) May 28, 2013 Fast-Fashion Retailer to Young Women
<br> Common Stock (19,041 shares) 3,141 —
Classic H&G Holdings, LLC March 12, 2020 Provider of Engineered Packaging Solutions
12.00% Secured Debt (Maturity—March 12, 2025) 26000 25,753 25,753
Preferred Member Units (154 units) 5,760 5,760
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
31,513 31,513
Congruent Credit Opportunities Funds(12)(13) January 24, 2012 Investment Partnership
<br> LP Interests (Congruent Credit Opportunities Fund II, LP) (Fully diluted 19.8%) 5,210 855
<br> LP Interests (Congruent Credit Opportunities Fund III, LP) (Fully diluted 17.4%)(8) 12,589 12,504
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 17,799 13,359

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Copper Trail Fund Investments(12)(13) July 17, 2017 Investment Partnership
LP Interests (Copper Trail Energy Fund I, LP) (Fully diluted 12.4%)(8) 2,248 1,822
Dos Rios Partners(12)(13) April 25, 2013 Investment Partnership
<br> LP Interests (Dos Rios Partners, LP) (Fully diluted 20.2%) 6,605 7,288
<br> LP Interests (Dos Rios Partners—A, LP) (Fully diluted 6.4%) 2,097 2,314
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 8,702 9,602
East Teak Fine Hardwoods, Inc. April 13, 2006 Distributor of Hardwood Products
Common Stock (6,250 shares) 480 300
EIG Fund Investments(12)(13) November 6, 2015 Investment Partnership
<br> LP Interests (EIG Global Private Debt Fund-A, L.P.) (Fully diluted 11.1%)(8) 756 595
Freeport Financial Funds(12)(13) June 13, 2013 Investment Partnership
LP Interests (Freeport Financial SBIC Fund LP) (Fully diluted 9.3%) 5,974 5,154
LP Interests (Freeport First Lien Loan Fund III LP) (Fully diluted 6.0%)(8) 10,785 10,571
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
16,759 15,725
Fuse, LLC(11) June 30, 2019 Cable Networks Operator
<br> 12% Secured Debt (Maturity—June 28, 2024) 1,939 1,939 1,601
<br> Common Stock (10,429 shares) 256 256
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 2,195 1,857
Harris Preston Fund Investments(12)(13) August 9, 2017 Investment Partnership
LP Interests (HPEP 3, L.P.) (Fully diluted 8.2%) 2,819 2,819
Hawk Ridge Systems, LLC(13) December 2, 2016 Value-Added Reseller of Engineering Design and Manufacturing Solutions
<br> LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—December 2, 2021)(9) 600 600 600
<br> 11.00% Secured Debt (Maturity—December 2, 2021) 13,400 13,350 13,400
<br> Preferred Member Units (226 units)(8) 2,850 7,320
<br> Preferred Member Units (HRS Services, ULC) (226 units) 150 390
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 16,950 21,710
Houston Plating and Coatings, LLC January 8, 2003 Provider of Plating and Industrial Coating Services
8.00% Unsecured Convertible Debt (Maturity—May 1, 2022) 3,000 3,000 3,260
Member Units (322,297 units)(8) 2,352 7,220
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
5,352 10,480
I-45 SLF LLC(12)(13) October 20, 2015 Investment Partnership
<br> Member Units (Fully diluted 20.0%; 24.4% profits interest)(8) 20,200 13,953

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
L.F. Manufacturing Holdings, LLC(10) December 23, 2013 Manufacturer of Fiberglass Products
Preferred Member Units (non-voting; 14% cumulative)(8)(19) 87 87
Member Units (2,179,001 units) 2,019 2,050
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
2,106 2,137
OnAsset Intelligence, Inc. April 18, 2011 Provider of Transportation Monitoring / Tracking Products and Services
<br> 12.00% PIK Secured Debt (Maturity—June 30, 2021)(19) 6,873 6,873 6,873
<br> 10.00% PIK Unsecured Debt (Maturity—June 30, 2021)(19) 61 61 61
<br> Preferred Stock (912 shares) 1,981 —
<br> Warrants (5,333 equivalent shares; Expiration—April 18, 2021; Strike price—0.01 per share) 1,919 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 10,834 6,934
PCI Holding Company, Inc. December 18, 2012 Manufacturer of Industrial Gas Generating Systems
12.00% Current, Secured Debt (Maturity—July 1, 2020) 11,356 11,356 11,356
Preferred Stock (1,740,000 shares) (non-voting) 1,740 4,350
Preferred Stock (1,500,000 shares) 3,927 4,130
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
17,023 19,836
Rocaceia, LLC (Quality Lease and Rental Holdings, LLC) January 8, 2013 Provider of Rigsite Accommodation Unit Rentals and Related Services
<br> 12.00% Secured Debt (Maturity—January 8, 2018)(14)(15) 30,369 29,865 —
<br> Preferred Member Units (250 units) 2,500 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 32,365 —
Salado Stone Holdings, LLC(10) June 27, 2016 Limestone and Sandstone Dimension Cut Stone Mining Quarries
Class A Preferred Units (Salado Acquisition, LLC) (2,000,000 units) 2,000 430
Slick Innovations, LLC September 13, 2018 Text Message Marketing Platform
<br> 14.00% Current, Secured Debt (Maturity—September 13, 2023) 6,280 6,136 6,136
<br> Common Stock (70,000 shares)(8) 700 1,130
<br> Warrants (18,084 equivalent units; Expiration—September 13, 2028; Strike price—0.01 per unit) 181 300
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 7,017 7,566
SI East, LLC August 31, 2018 Rigid Industrial Packaging Manufacturing
9.50% Current, Secured Debt (Maturity—August 31, 2023) 32,963 32,723 32,963
Preferred Member Units (157 units)(8) 6,000 9,310
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
38,723 42,273

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
UniTek Global Services, Inc.(11) April 15, 2011 Provider of Outsourced Infrastructure Services
<br> LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—August 20, 2024)(9) 2,963 2,939 2,677
<br> Preferred Stock (1,133,102 shares; 20% cumulative)(8)(19) 1,305 2,833
<br> Preferred Stock (1,521,122 shares; 20% cumulative)(8)(19) 2,188 2,282
<br> Preferred Stock (2,281,682 shares; 19% cumulative)(8)(19) 3,667 658
<br> Preferred Stock (4,336,866 shares; 13.50% cumulative)(19) 7,924 4
<br> Common Stock (945,507 shares) — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 18,023 8,454
Universal Wellhead Services Holdings, LLC(10) October 30, 2014 Provider of Wellhead Equipment, Designs, and Personnel to the Oil & Gas Industry
Preferred Member Units (UWS Investments, LLC) (716,949 units; 14% cumulative)(8)(19) 1,032 240
Member Units (UWS Investments, LLC) (4,000,000 units) 4,000 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
5,032 240
Volusion, LLC January 26, 2015 Provider of Online Software-as-a-Service eCommerce Solutions
<br> 11.50% Secured Debt (Maturity—January 26, 2020)(17) 20,234 20,234 19,243
<br> 8.00% Unsecured Convertible Debt (Maturity—November 16, 2023) 409 409 291
<br> Preferred Member Units (4,876,670 units) 14,000 5,678
<br> Warrants (1,831,355 equivalent units; Expiration—January 26, 2025; Strike price—0.01 per unit) 2,576 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 37,219 25,212
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Subtotal Affiliate Investments (23.5% of net assets at fair value) $ 372,475 $ 321,709
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Non-Control/Non-Affiliate Investments(7)
AAC Holdings, Inc.(11) June 30, 2017 Substance Abuse Treatment Service Provider
10.00% Current / 8.00% PIK Secured Debt (Maturity—March 24, 2021)(19) 2,264 2,196 2,196
Prime Plus 13.50% (Floor 1.00%), Current Coupon 16.75%, Secured Debt (Maturity—April 17, 2020)(9)(17) 3,121 2,961 2,887
Prime Plus 9.75% (Floor 1.00%), Current Coupon 13.00%, Secured Debt (Maturity—June 30, 2023)(9)(14) 14,396 14,030 6,442
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
19,187 11,525
Adams Publishing Group, LLC(10) November 19, 2015 Local Newspaper Operator
<br> LIBOR Plus 7.50% (Floor 1.75%), Current Coupon 9.25%, Secured Debt (Maturity—July 3, 2023)(9) 6,301 6,162 6,054
ADS Tactical, Inc.(10) March 7, 2017 Value-Added Logistics and Supply Chain Provider to the Defense Industry
LIBOR Plus 6.25% (Floor 0.75%), Current Coupon 7.00%, Secured Debt (Maturity—July 26, 2023)(9) 19,738 19,616 19,444
Aethon United BR LP(10) September 8, 2017 Oil & Gas Exploration & Production
<br> LIBOR Plus 6.75% (Floor 1.00%), Current Coupon 7.75%, Secured Debt (Maturity—September 8, 2023)(9) 9,750 9,644 9,002
Affordable Care Holding Corp.(10) May 9, 2019 Dental Service Organization
LIBOR Plus 4.75% (Floor 1.00%), Current Coupon 5.75%, Secured Debt (Maturity—October 22, 2022)(9) 14,321 14,095 12,746
ALKU, LLC.(11) October 18, 2019 Specialty National Staffing Operator
<br> LIBOR Plus 5.50%, Current Coupon 6.38%, Secured Debt (Maturity—July 29, 2026)(9) 9,975 9,883 9,676
American Nuts, LLC(10) April 10, 2018 Roaster, Mixer and Packager of Bulk Nuts and Seeds
LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 9.43%, Secured Debt (Maturity—April 10, 2023)(9) 12,186 11,977 11,605
American Teleconferencing Services, Ltd.(11) May 19, 2016 Provider of Audio Conferencing and Video Collaboration Solutions
<br> LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.66%, Secured Debt (Maturity—June 8, 2023)(9) 17,374 16,531 11,276
APTIM Corp.(11) August 17, 2018 Engineering, Construction & Procurement
7.75% Secured Debt (Maturity—June 15, 2025) 12,452 10,947 4,919

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Arcus Hunting LLC(10) January 6, 2015 Manufacturer of Bowhunting and Archery Products and Accessories
<br> LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 9.45%, Secured Debt (Maturity—March 31, 2021)(9) 13,423 13,423 13,423
ASC Ortho Management Company, LLC(10) August 31, 2018 Provider of Orthopedic Services
LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 8.93%, Secured Debt (Maturity—August 31, 2023)(9) 5,264 5,194 4,924
13.25% PIK Secured Debt (Maturity—December 1, 2023)(19) 1,980 1,951 1,919
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
7,145 6,843
ATX Networks Corp.(11)(13)(21) June 30, 2015 Provider of Radio Frequency Management Equipment
<br> LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.45% / 1.00% PIK, Current Coupon Plus PIK 8.45%, Secured Debt (Maturity—June 11,<br>2021)(9)(19) 13,530 13,419 12,380
Barfly Ventures, LLC(10) August 31, 2015 Casual Restaurant Group
9.00% PIK Secured Debt (Maturity—March 23, 2021)(14)(19) 110 110 110
12.00% Secured Debt (Maturity—August 31, 2020)(14) 10,185 10,073 1,111
Options (3 equivalent units) 607 —
Warrant (2 equivalent unit; Expiration—August 31, 2025; Strike price—1.00 per unit) 473 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
11,263 1,221
Berry Aviation, Inc.(10) July 6, 2018 Charter Airline Services
<br> 10.50% Current / 1.5% PIK, Secured Debt (Maturity— January 6, 2024)(19) 4,588 4,556 4,522
<br> Preferred Member Units (Berry Acquisition, LLC) (122,416 units; 16% cumulative)(8)(19) 135 135
<br> Preferred Member Units (Berry Acquisition, LLC) (1,548,387 units; 8% cumulative)(19) 1,671 804
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 6,362 5,461
BigName Commerce, LLC(10) May 11, 2017 Provider of Envelopes and Complimentary Stationery Products
LIBOR Plus 7.25% (Floor 1.00%), Current Coupon 4.35% / 4.35% PIK, Current Coupon plus PIK 8.70%, Secured Debt (Maturity—May 11,<br>2022)(9)(19) 2,233 2,222 2,134
Binswanger Enterprises, LLC(10) March 10, 2017 Glass Repair and Installation Service Provider
<br> LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 9.50%, Secured Debt (Maturity—March 9, 2022)(9) 13,538 13,312 13,313
<br> Member Units (1,050,000 units) 1,050 730
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 14,362 14,043

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Bluestem Brands, Inc.(11) December 19, 2013 Multi-Channel Retailer of General Merchandise
LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—September 9, 2020)(9) 635 635 635
Prime Plus 6.50% (Floor 1.00%), Current Coupon 9.75%, Secured Debt (Maturity—November 6, 2020)(9)(14) 10,622 10,571 3,983
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
11,206 4,618
Bojangles', Inc.(11) February 5, 2019 Quick Service Restaurant Group
<br> LIBOR Plus 4.75%, Current Coupon 4.93%, Secured Debt (Maturity—January 28, 2026) 7,723 7,593 7,498
<br> LIBOR Plus 8.50%, Current Coupon 8.68%, Secured Debt (Maturity—January 28, 2027) 5,000 4,912 4,575
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 12,505 12,073
Brainworks Software, LLC(10) August 12, 2014 Advertising Sales and Newspaper Circulation Software
Prime Plus 9.25% (Floor 3.25%), Current Coupon 12.50%, Secured Debt (Maturity—July 22, 2019)(9)(14)(17) 6,733 6,733 4,915
Brightwood Capital Fund Investments(12)(13) July 21, 2014 Investment Partnership
<br> LP Interests (Brightwood Capital Fund III, LP) (Fully diluted 1.6%)(8) 10,920 8,075
<br> LP Interests (Brightwood Capital Fund IV, LP) (Fully diluted 0.6%)(8) 4,750 4,384
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 15,670 12,459
Cadence Aerospace LLC(10) November 14, 2017 Aerostructure Manufacturing
LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—November 14, 2023)(9) 26,868 26,678 24,545
California Pizza Kitchen, Inc.(11) August 29, 2016 Casual Restaurant Group
<br> LIBOR Plus 10.00% (Floor 1.50%), Current Coupon 11.50%, Secured Debt (Maturity—August 23, 2022)(9) 3,929 3,882 3,857
<br> LIBOR Plus 6.00% PIK (Floor 1.00%), Current Coupon 7.00% PIK, Secured Debt (Maturity—August 23, 2022)(9)(19) 12,064 11,990 3,534
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 15,872 7,391
Central Security Group, Inc.(11) December 4, 2017 Security Alarm Monitoring Service Provider
LIBOR Plus 5.63% (Floor 1.00%), Current Coupon 6.63%, Secured Debt (Maturity—October 6, 2021)(9) 13,667 13,637 5,768

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Cenveo Corporation(11) September 4, 2015 Provider of Digital Marketing Agency Services
<br> Libor Plus 9.50% (Floor 1.00%), Current Coupon 10.50%, Secured Debt (Maturity—June 7, 2023)(9) 5,674 5,520 5,107
<br> Common Stock (177,130 shares) 5,309 2,657
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 10,829 7,764
Chisholm Energy Holdings, LLC(10) May 15, 2019 Oil & Gas Exploration & Production
LIBOR Plus 6.25% (Floor 1.50%), Current Coupon 7.75%, Secured Debt (Maturity—May 15, 2026)(9) 3,571 3,493 3,278
Clarius BIGS, LLC(10) September 23, 2014 Prints & Advertising Film Financing
<br> 15.00% PIK Secured Debt (Maturity—January 5, 2015)(14)(17) 2,841 2,841 45
Clickbooth.com, LLC(10) December 5, 2017 Provider of Digital Advertising Performance Marketing Solutions
LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 9.95%, Secured Debt (Maturity—January 31, 2025)(9) 8,407 8,283 8,191
Coastal Television Broadcasting Holdings LLC(10) June 4, 2020 Operator of Television Broadcasting Networks
<br> LIBOR Plus 10.00% (Floor 2.00%), Current Coupon 12.00%, Secured Debt (Maturity—June 4, 2025)(9) 8,900 8,714 8,714
Construction Supply Investments, LLC(10) December 29, 2016 Distribution Platform of Specialty Construction Materials to Professional Concrete and Masonry Contractors
Member Units (50,687 units) 5,637 7,700
Corel Corporation(11)(13)(21) July 24, 2019 Publisher of Desktop and Cloud-based Software
<br> LIBOR Plus 5.00%, Current Coupon 5.36%, Secured Debt (Maturity—July 2, 2026)(9) 19,652 18,761 18,620
CTVSH, PLLC(10) August 3, 2017 Emergency Care and Specialty Service Animal Hospital
LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 9.00%, Secured Debt (Maturity—August 3, 2022)(9) 9,399 9,352 9,264
Darr Equipment LP(10) April 15, 2014 Heavy Equipment Dealer
<br> 11.5% Current / 1% PIK Secured Debt (Maturity—June 22, 2023)(19) 5,929 5,929 5,929
<br> Warrants (915,734 equivalent units; Expiration—December 23, 2023; Strike price—1.50 per unit) 474 110
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 6,403 6,039

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Digital River, Inc.(11) February 24, 2015 Provider of Outsourced e-Commerce Solutions and Services
LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—February 12, 2023)(9) 13,628 13,379 13,492
DTE Enterprises, LLC(10) April 13, 2018 Industrial Powertrain Repair and Services
<br> LIBOR Plus 7.50% (Floor 1.50%), Current Coupon 9.00%, Secured Debt (Maturity—April 13, 2023)(9) 10,992 10,849 10,691
<br> Class AA Preferred Member Units (non-voting; 10% cumulative)(8)(19) 904 904
<br> Class A Preferred Member Units (776,316 units) 776 1,260
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 12,529 12,855
Dynamic Communities, LLC(10) July 17, 2018 Developer of Business Events and Online Community Groups
LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 9.50%, Secured Debt (Maturity—July 17, 2023)(9) 5,390 5,316 5,045
Echo US Holdings, LLC.(10) November 12, 2019 Developer and Manufacturer of PVC and Polypropylene Materials
<br> LIBOR Plus 6.25% (Floor 1.63%), Current Coupon 7.88%, Secured Debt (Maturity—October 25, 2024)(9) 22,851 22,740 21,750
EnCap Energy Fund Investments(12)(13) December 28, 2010 Investment Partnership
LP Interests (EnCap Energy Capital Fund VIII, L.P.) (Fully diluted 0.1%) 3,635 678
LP Interests (EnCap Energy Capital Fund VIII Co-Investors, L.P.) (Fully diluted 0.4%) 2,097 346
LP Interests (EnCap Energy Capital Fund IX, L.P.) (Fully diluted 0.1%)(8) 4,359 1,245
LP Interests (EnCap Energy Capital Fund X, L.P.) (Fully diluted 0.1%)(8) 8,555 5,792
LP Interests (EnCap Flatrock Midstream Fund II, L.P.) (Fully diluted 0.8%) 7,473 3,931
LP Interests (EnCap Flatrock Midstream Fund III, L.P.) (Fully diluted 0.2%)(8) 6,974 5,797
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
33,093 17,789
Encino Acquisition Partners Holdings, Inc.(11) November 16, 2018 Oil & Gas Exploration & Production
<br> LIBOR Plus 6.75% (Floor 1.00%), Current Coupon 7.75%, Secured Debt (Maturity—October 29, 2025)(9) 9,000 8,926 6,570
EPIC Y-Grade Services, LP(11) June 22, 2018 NGL Transportation & Storage
LIBOR Plus 6.00%, (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—June 13, 2024) 6,875 6,777 5,145

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Fortna, Inc.(10) July 23, 2019 Process, Physical Distribution and Logistics Consulting Services
<br> LIBOR Plus 5.00%, Current Coupon 5.18%, Secured Debt (Maturity—April 8, 2025) 9,739 9,592 8,795
GeoStabilization International (GSI)(11) December 31, 2018 Geohazard Engineering Services & Maintenance
LIBOR Plus 5.25%, Current Coupon 5.43%, Secured Debt (Maturity—December 19, 2025) 16,294 16,158 15,642
GoWireless Holdings, Inc.(11) December 31, 2017 Provider of Wireless Telecommunications Carrier Services
<br> LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—December 22, 2024)(9) 17,868 17,727 15,061
Grupo Hima San Pablo, Inc.(11) March 7, 2013 Tertiary Care Hospitals
LIBOR Plus 7.00% (Floor 1.50%), Current Coupon 9.69%, Secured Debt (Maturity—April 30, 2019)(9)(17) 4,504 4,504 3,084
13.75% Secured Debt (Maturity—October 15, 2018)(17) 2,055 2,040 167
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
6,544 3,251
GS HVAM Intermediate, LLC(10) October 18, 2019 Specialized Food Distributor
<br> LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 6.75%, Secured Debt (Maturity—October 2, 2024)(9) 13,580 13,463 12,635
Gexpro Services(10) February 24, 2020 Distributor of Industrial and Specialty Parts
LIBOR Plus 6.50% (Floor 1.50%), Current Coupon 8.00%, Secured Debt (Maturity—February 24, 2025)(9) 29,327 28,779 27,148
HDC/HW Intermediate Holdings(10) December 21, 2018 Managed Services and Hosting Provider
<br> LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 8.50%, Secured Debt (Maturity—December 21, 2023)(9) 3,482 3,430 3,159
Hoover Group, Inc.(10)(13) October 21, 2016 Provider of Storage Tanks and Related Products to the Energy and Petrochemical Markets
LIBOR Plus 7.25% (Floor 1.00%), Current Coupon 8.25%, Secured Debt (Maturity—January 28, 2021)(9) 20,694 20,344 15,728
Hunter Defense Technologies, Inc.(10) March 29, 2018 Provider of Military and Commercial Shelters and Systems
<br> LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.07%, Secured Debt (Maturity—March 29, 2023)(9) 31,161 30,790 30,559
HW Temps LLC July 2, 2015 Temporary Staffing Solutions
12.00% Current Secured Debt (Maturity—March 29, 2023) 10,001 9,875 8,912

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Hydrofarm Holdings LLC(10) May 18, 2017 Wholesaler of Horticultural Products
<br> LIBOR Plus 8.50%, Current Coupon 8.68% Secured Debt (Maturity—May 12, 2022) 6,907 6,825 5,610
Hyperion Materials & Technologies, Inc.(11)(13) September 12, 2019 Manufacturer of Cutting and Machine Tools & Speciality Polishing Compounds
LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 6.50%, Secured Debt (Maturity—August 28, 2026)(9) 22,388 21,979 19,883
iEnergizer Limited(10)(13)(21) April 17, 2019 Provider of Business Outsourcing Solutions
<br> LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—April 17, 2024)(9) 11,438 11,340 11,137
Implus Footcare, LLC(10) June 1, 2017 Provider of Footwear and Related Accessories
LIBOR Plus 2.50% (Floor 1.00%), Current Coupon 3.50% / PIK 5.25%, Current Coupon Plus PIK 8.75%, Secured Debt (Maturity—April 30,<br>2024)(9)(19) 18,732 18,372 17,185
Independent Pet Partners Intermediate Holdings, LLC(10) November 20, 2018 Omnichannel Retailer of Specialty Pet Products
<br> LIBOR Plus 9.00% (Floor 1.00%), Current Coupon 11.31%, Secured Debt (Maturity—November 19, 2023)(9) 19,514 19,071 16,503
<br> Member Units (1,558,333 units) 1,558 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 20,629 16,503
Industrial Services Acquisition, LLC(10) June 17, 2016 Industrial Cleaning Services
6% Current / 7% PIK Unsecured Debt (Maturity—December 17, 2022)(19) 5,428 5,371 5,428
Preferred Member Units (Industrial Services Investments, LLC) (144 units; 10% cumulative)(8)(19) 107 107
Preferred Member Units (Industrial Services Investments, LLC) (80 units; 20% cumulative)(8)(19) 65 65
Member Units (Industrial Services Investments, LLC) (900 units) 900 530
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
6,443 6,130
Inn of the Mountain Gods Resort and Casino(11) October 30, 2013 Hotel & Casino Owner & Operator
<br> 9.25% Secured Debt (Maturity—November 30, 2020) 7,176 7,099 6,028
Interface Security Systems, L.L.C(10) August 7, 2019 Commercial Security & Alarm Services
LIBOR Plus 7.00% (Floor 1.75%), Current Coupon 8.75% / 3.00% PIK, Secured Debt (Maturity—August 7, 2023)(9)(19) 7,557 7,435 7,557

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Intermedia Holdings, Inc.(11) August 3, 2018 Unified Communications as a Service
<br> LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—July 19, 2025)(9) 20,050 19,961 19,681
Invincible Boat Company, LLC.(10) August 28, 2019 Manufacturer of Sport Fishing Boats
LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—August 28, 2025)(9) 9,538 9,445 8,993
Isagenix International, LLC(11) June 21, 2018 Direct Marketer of Health & Wellness Products
<br> LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 6.75%, Secured Debt (Maturity—June 14, 2025)(9) 5,777 5,732 2,302
JAB Wireless, Inc.(10) May 2, 2018 Fixed Wireless Broadband Provider
LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 8.17%, Secured Debt (Maturity—May 2, 2023)(9) 14,700 14,608 14,180
Jackmont Hospitality, Inc.(10) May 26, 2015 Franchisee of Casual Dining Restaurants
<br> LIBOR Plus 6.75% (Floor 1.00%), Current Coupon 7.75%, Secured Debt (Maturity—May 26, 2021)(9) 4,033 4,030 3,303
Joerns Healthcare, LLC(11) April 3, 2013 Manufacturer and Distributor of Health Care Equipment & Supplies
LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00% Secured Debt (Maturity—August 21, 2024)(9) 4,016 3,948 3,784
Common Stock (472,579 shares) 4,429 2,480
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
8,377 6,264
Kemp Technologies Inc.(10) June 27, 2019 Provider of Application Delivery Controllers
<br> LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 7.25%, Secured Debt (Maturity—March 29, 2024)(9) 7,425 7,302 7,139
Kore Wireless Group Inc.(11) December 31, 2018 Mission Critical Software Platform
LIBOR Plus 5.50%, Current Coupon 5.81%, Secured Debt (Maturity—December 20, 2024) 19,236 19,139 18,034
Larchmont Resources, LLC(11) August 13, 2013 Oil & Gas Exploration & Production
<br> LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—August 7, 2021)(9) 2,145 2,145 1,180
<br> Member Units (Larchmont Intermediate Holdco, LLC) (2,828 units) 353 353
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 2,498 1,533
Laredo Energy VI, LP(10) January 15, 2019 Oil & Gas Exploration & Production
Member Units (1,155,952 units) 11,560 11,560

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Lightbox Holdings, L.P.(11) May 23, 2019 Provider of Commercial Real Estate Software
<br> LIBOR Plus 5.00%, Current Coupon 5.18%, Secured Debt (Maturity—May 9, 2026) 14,888 14,687 13,771
LKCM Headwater Investments I, L.P.(12)(13) January 25, 2013 Investment Partnership
LP Interests (Fully diluted 2.3%)(8) 1,746 3,354
LL Management, Inc.(10) May 2, 2019 Medical Transportation Service Provider
<br> LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.56%, Secured Debt (Maturity—September 25, 2023)(9) 13,650 13,537 12,976
Logix Acquisition Company, LLC(10) June 24, 2016 Competitive Local Exchange Carrier
LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 6.75%, Secured Debt (Maturity—December 22, 2024)(9) 26,272 24,534 22,200
Looking Glass Investments, LLC(12)(13) July 1, 2015 Specialty Consumer Finance
<br> Member Units (2.6 units) 125 25
<br> Member Units (LGI Predictive Analytics LLC) (190,712 units) 41 8
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 166 33
LSF9 Atlantis Holdings, LLC(11) May 17, 2017 Provider of Wireless Telecommunications Carrier Services
LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—May 1, 2023)(9) 9,275 9,275 7,914
Lulu's Fashion Lounge, LLC(10) August 31, 2017 Fast Fashion E-Commerce Retailer
<br> LIBOR Plus 9.00% (Floor 1.00%), Current Coupon 10.07% / 2.50% PIK, Current Coupon Plus PIK 12.57%, Secured Debt<br>(Maturity—August 28, 2022)(9)(19) 11,335 11,115 9,692
Lynx FBO Operating LLC(10) September 30, 2019 Fixed Based Operator in the General Aviation Industry
LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 7.25%, Secured Debt (Maturity—September 30, 2024)(9) 13,647 13,375 12,656
Member Units (3,704 units) 500 445
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
13,875 13,101
Mac Lean-Fogg Company(10) April 22, 2019 Manufacturer and Supplier for Auto and Power Markets
<br> LIBOR Plus 5.00%, Current Coupon 5.00%, Secured Debt (Maturity—December 22, 2025) 16,564 16,453 15,141
<br> Preferred Stock (1,516 shares; 4.50% Cash / 9.25% PIK cumulative)(8)(19) 1,809 1,809 1,806
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 18,262 16,947

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
MHVC Acquisition Corp.(11) May 8, 2017 Provider of Differentiated Information Solutions, Systems Engineering, and Analytics
LIBOR Plus 5.25% (Floor 1.00%), Current Coupon 6.25%, Secured Debt (Maturity—April 29, 2024)(9) 19,899 19,813 19,203
Mills Fleet Farm Group, LLC(10) October 24, 2018 Omnichannel Retailer of Work, Farm and Lifestyle Merchandise
<br> LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 7.84% / 0.75% PIK, Current Coupon Plus PIK 8.59%, Secured Debt<br>(Maturity—October 24, 2024)(9)(19) 13,959 13,663 12,425
NBG Acquisition Inc(11) April 28, 2017 Wholesaler of Home Décor Products
LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 6.57%, Secured Debt (Maturity—April 26, 2024)(9) 4,153 4,111 1,910
NinjaTrader, LLC(10) December 18, 2019 Operator of Futures Trading Platform
<br> LIBOR Plus 6.00% (Floor 1.50%), Current Coupon 7.50%, Secured Debt (Maturity—December 18, 2024)(9) 9,125 8,955 8,877
NNE Partners, LLC(10) March 2, 2017 Oil & Gas Exploration & Production
LIBOR Plus 8.00%, Current Coupon 8.34%, Secured Debt (Maturity—March 2, 2022) 23,417 23,287 20,701
Novetta Solutions, LLC (11) June 21, 2017 Provider of Advanced Analytics Solutions for Defense Agencies
<br> LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.00%, Secured Debt (Maturity—October 17, 2022)(9) 20,950 20,628 20,548
NTM Acquisition Corp.(11) July 12, 2016 Provider of B2B Travel Information Content
LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 7.25%, Secured Debt (Maturity—June 7, 2022)(9) 4,793 4,793 4,314
Ospemifene Royalty Sub LLC (QuatRx)(10) July 8, 2013 Estrogen-Deficiency Drug Manufacturer and Distributor
<br> 11.50% Secured Debt (Maturity—November 15, 2026)(14) 4,814 4,814 261
PaySimple, Inc.(10) September 9, 2019 Leading Technology Services Commerce Platform
LIBOR Plus 5.50%, Current Coupon 5.69%, Secured Debt (Maturity—August 23, 2025)(9) 24,135 23,890 21,721
Permian Holdco 2, Inc.(11) February 12, 2013 Storage Tank Manufacturer
<br> 14.00% PIK Unsecured Debt (Maturity—October 15, 2021)(19) 488 488 93
<br> 18.00% PIK Unsecured Debt (Maturity—June 30, 2022)(19) 348 348 348
<br> Preferred Stock (Permian Holdco 1, Inc.) (154,558 units) 799 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 1,635 441

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Point.360(10) July 8, 2015 Fully Integrated Provider of Digital Media Services
Warrants (65,463 equivalent shares; Expiration—July 7, 2020; Strike price—0.75 per share) 69 —
Common Stock (163,658 shares) 273 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
342 —
PricewaterhouseCoopers Public Sector LLP(11) May 24, 2018 Provider of Consulting Services to Governments
<br> LIBOR Plus 8.00%, Current Coupon 8.18%, Secured Debt (Maturity—May 1, 2026) 9,000 8,967 8,235
PT Network, LLC(10) November 1, 2013 Provider of Outpatient Physical Therapy and Sports Medicine Services
LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 6.73% / 2.00% PIK, Current Coupon Plus PIK 8.73%, Secured Debt<br>(Maturity—November 30, 2023)(9)(19) 8,555 8,555 8,074
Research Now Group, Inc. and Survey Sampling International, LLC(11) December 31, 2017 Provider of Outsourced Online Surveying
<br> LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 6.50%, Secured Debt (Maturity—December 20, 2024)(9) 18,023 17,543 16,736
RM Bidder, LLC(10) November 12, 2015 Scripted and Unscripted TV and Digital Programming Provider
Warrants (327,532 equivalent units; Expiration—October 20, 2025; Strike price—14.28 per unit) 425 —
Member Units (2,779 units) 46 13
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
471 13
SAFETY Investment Holdings, LLC April 29, 2016 Provider of Intelligent Driver Record Monitoring Software and Services
<br> Member Units (2,000,000 units) 2,000 2,060
Salient Partners L.P.(11) June 25, 2015 Provider of Asset Management Services
LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—August 31, 2021)(9) 6,450 6,438 5,876
Staples Canada ULC(10)(13)(21) September 14, 2017 Office Supplies Retailer
<br> LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—September 12, 2024)(9)(22) 13,828 13,665 11,685
TE Holdings, LLC(11) December 5, 2013 Oil & Gas Exploration & Production
Member Units (97,048 units) 970 —

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
TEAM Public Choices, LLC(10) October 28, 2019 Home-Based Care Employment Service Provider
<br> LIBOR Plus 6.00% (Floor 1.50%), Current Coupon 7.50%, Secured Debt (Maturity—September 20, 2024)(9) 17,372 17,214 16,615
Tectonic Financial, Inc. May 15, 2017 Financial Services Organization
Common Stock (200,000 shares) 2,000 2,600
TGP Holdings III LLC(11) September 30, 2017 Outdoor Cooking & Accessories
<br> LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 9.50%, Secured Debt (Maturity—September 25, 2025)(9) 5,500 5,444 4,922
The Pasha Group(11) February 2, 2018 Diversified Logistics and Transportation Provided
LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 7.77%, Secured Debt (Maturity—January 26, 2023)(9) 12,279 11,578 11,358
USA DeBusk LLC(10) October 22, 2019 Provider of Industrial Cleaning Services
<br> LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 6.75%, Secured Debt (Maturity—October 22, 2024)(9) 25,137 24,702 23,119
U.S. TelePacific Corp.(11) September 14, 2016 Provider of Communications and Managed Services
LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.07%, Secured Debt (Maturity—May 2, 2023)(9) 17,088 16,916 13,719
Vida Capital, Inc(11) October 10, 2019 Alternative Asset Manager
<br> LIBOR Plus 6.00%, Current Coupon 6.76%, Secured Debt (Maturity—October 1, 2026) 18,338 18,090 18,292
VIP Cinema Holdings, Inc.(11) March 9, 2017 Supplier of Luxury Seating to the Cinema Industry
Prime Plus 7.00% (Floor 2.00%), Current Coupon 10.25%, Secured Debt (Maturity—May 18, 2020)(9)(17) 994 994 994
Prime Plus 7.00% (Floor 2.00%), Current Coupon 10.25%, Secured Debt (Maturity—March 1, 2023)(9)(14) 10,063 10,030 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
11,024 994
Vistar Media, Inc.(10) February 17, 2017 Operator of Digital Out-of-Home Advertising Platform
<br> LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 9.50%, Secured Debt (Maturity—April 3, 2023)(9) 4,670 4,529 4,536
<br> Preferred Stock (70,207 shares) 767 1,600
<br> Warrants (69,675 equivalent shares; Expiration—April 3, 2029; Strike price—10.92 per share) — 1,620
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 5,296 7,756

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Wireless Vision Holdings, LLC(10) September 29, 2017 Provider of Wireless Telecommunications Carrier Services
LIBOR Plus 8.94% (Floor 1.00%), Current Coupon 9.84% / 1.00% PIK, Current Coupon Plus PIK 10.84%, Secured Debt<br>(Maturity—September 29, 2022)(9)(19)(23) 6,985 6,874 6,984
LIBOR Plus 8.91% (Floor 1.00%), Current Coupon 9.91% / 1.00% PIK, Current Coupon Plus PIK 10.91%, Secured Debt<br>(Maturity—September 29, 2022)(9)(19)(23) 6,070 6,001 6,070
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
12,875 13,054
YS Garments, LLC(11) August 22, 2018 Designer and Provider of Branded Activewear
<br> LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.31% Secured Debt (Maturity—August 9, 2024)(9) 14,278 14,171 13,064
Zilliant Incorporated June 15, 2012 Price Optimization and Margin Management Solutions
Preferred Stock (186,777 shares) 154 260
Warrants (952,500 equivalent shares; Expiration—June 15, 2022; Strike price—0.001 per share) 1,071 1,190
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
1,225 1,450
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Subtotal Non-Control/Non-Affiliate Investments (79.5% of net assets at fair value) $ 1,257,360 $ 1,089,705
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total Portfolio Investments, June 30, 2020 $ 2,425,854 $ 2,419,553
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

All values are in US Dollars.

  • (1)
    • All investments are Lower Middle Market portfolio investments, unless otherwise noted. See Note B for a description of Lower Middle Market portfolio investments. All of the Company's investments, unless otherwise noted, are encumbered either as security for the Company's Credit Facility or in support of the SBA-guaranteed debentures issued by the Funds.
  • (2)
    • Debt investments are income producing, unless otherwise noted. Equity and warrants are non-income producing, unless otherwise noted.
  • (3)
    • See Note C and Schedule 12-14 for a summary of geographic location of portfolio companies.
  • (4)
    • Principal is net of repayments. Cost is net of repayments and accumulated unearned income.
  • (5)
    • Control investments are defined by the Investment Company Act of 1940, as amended ("1940 Act"), as investments in which more than 25% of the voting securities are owned or where the ability to nominate greater than 50% of the board representation is maintained.
  • (6)
    • Affiliate investments are defined by the 1940 Act as investments in which between 5% and 25% (inclusive) of the voting securities are owned and the investments are not classified as Control investments.
  • (7)
    • Non-Control/Non-Affiliate investments are defined by the 1940 Act as investments that are neither Control investments nor Affiliate investments.
  • (8)
    • Income producing through dividends or distributions.
  • (9)
    • Index based floating interest rate is subject to contractual minimum interest rate. A majority of the variable rate loans in the Company's investment portfolio bear interest at a rate that may be determined by reference to either LIBOR or an alternate Base Rate (commonly based on the Federal Funds Rate or the Prime Rate), which typically resets semi-annually, quarterly, or monthly at the borrower's option. The borrower may also elect to have multiple interest reset periods for each loan. For each such loan, the Company has provided the weighted average annual stated interest rate in effect at June 30, 2020. As noted in this schedule, 60% of the loans (based on the par amount) contain LIBOR floors which range between 0.50% and 2.00%, with a weighted-average LIBOR floor of approximately 1.09%.
  • (10)
    • Private Loan portfolio investment. See Note B for a description of Private Loan portfolio investments.
  • (11)
    • Middle Market portfolio investment. See Note B for a description of Middle Market portfolio investments.
  • (12)
    • Other Portfolio investment. See Note B for a description of Other Portfolio investments.
  • (13)
    • Investment is not a qualifying asset as defined under Section 55(a) of the 1940 Act. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets.
  • (14)
    • Non-accrual and non-income producing investment.
  • (15)
    • Portfolio company is in a bankruptcy process and, as such, the maturity date of our debt investment in this portfolio company will not be finally determined until such process is complete. As noted in footnote (14), our debt investment in this portfolio company is on non-accrual status.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

June 30, 2020

(dollars in thousands)

  • (16)
    • External Investment Manager. Investment is not encumbered as security for the Company's Credit Facility or in support of the SBA-guaranteed debentures issued by the Funds.
  • (17)
    • Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable.
  • (18)
    • Investment fair value was determined using significant unobservable inputs, unless otherwise noted. See Note C for further discussion.
  • (19)
    • PIK interest income and cumulative dividend income represent income not paid currently in cash.
  • (20)
    • All portfolio company headquarters are based in the United States, unless otherwise noted.
  • (21)
    • Portfolio company headquarters are located outside of the United States.
  • (22)
    • In connection with the Company's debt investment in Staples Canada ULC and in an attempt to mitigate any potential adverse change in foreign exchange rates during the term of the Company's investment, the Company maintains a forward foreign currency contract with Cadence Bank to lend $16.7 million Canadian Dollars and receive $12.8 million U.S. Dollars with a settlement date of September 14, 2020. The unrealized appreciation on the forward foreign currency contract is $0.4 million as of June 30, 2020.
  • (23)
    • The Company has entered into an intercreditor agreement that entitles the Company to the "last out" tranche of the first lien secured loans, whereby the "first out" tranche will receive priority as to the "last out" tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of LIBOR plus 8.50% (Floor 1.00%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate.
  • (24)
    • Investment has an unfunded commitment as of June 30, 2020 (see Note K). The fair value of the investment includes the impact of the fair value of any unfunded commitments.
  • (25)
    • All of the Company's portfolio investments are generally subject to restrictions on resale as "restricted securities."
  • (26)
    • Investment date represents the date of initial investment in the portfolio company.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Control Investments(5)
Access Media Holdings, LLC(10) July 22, 2015 Private Cable Operator
10% PIK Secured Debt (Maturity—July 22, 2020)(14)(19) $ 23,828 $ 23,828 $ 6,387
Preferred Member Units (9,481,500 units)(27) 9,375 (284 )
Member Units (45 units) 1 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
33,204 6,103
ASC Interests, LLC August 1, 2013 Recreational and Educational Shooting Facility
<br> 11.00% Secured Debt (Maturity—July 31, 2020) 1,650 1,639 1,639
<br> Member Units (1,500 units) 1,500 1,290
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 3,139 2,929
Analytical Systems Keco, LLC August 16, 2019 Manufacturer of Liquid and Gas Analyzers
LIBOR Plus 10.00% (Floor 2.00%), Current Coupon 12.13%, Secured Debt (Maturity—August 16, 2024)(9) 5,565 5,210 5,210
Preferred Member Units (3,200 units) 3,200 3,200
Warrants (420 equivalent shares; Expiration—August 16, 2029; Strike price—0.01 per share) 316 316
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
8,726 8,726
ATS Workholding, LLC(10) March 10, 2014 Manufacturer of Machine Cutting Tools and Accessories
<br> 5% Secured Debt (Maturity—November 16, 2021) 4,919 4,666 4,521
<br> Preferred Member Units (3,725,862 units) 3,726 939
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 8,392 5,460
Bond-Coat, Inc. December 28, 2012 Casing and Tubing Coating Services
15.00% Secured Debt (Maturity—December 28, 2020) 11,596 11,473 11,473
Common Stock (57,508 shares) 6,350 8,300
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
17,823 19,773
Brewer Crane Holdings, LLC January 9, 2018 Provider of Crane Rental and Operating Services
<br> LIBOR Plus 10.00% (Floor 1.00%), Current Coupon 11.71%, Secured Debt (Maturity—January 9, 2023)(9) 9,052 8,989 8,989
<br> Preferred Member Units (2,950 units)(8) 4,280 4,280
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 13,269 13,269
Bridge Capital Solutions Corporation April 18, 2012 Financial Services and Cash Flow Solutions Provider
13.00% Secured Debt (Maturity—December 11, 2024) 8,813 7,797 7,797
Warrants (82 equivalent shares; Expiration—July 25, 2026; Strike price—0.01 per share) 2,132 3,500
13.00% Secured Debt (Mercury Service Group, LLC) (Maturity—December 11, 2024) 1,000 996 996
Preferred Member Units (Mercury Service Group, LLC) (17,742 units)(8) 1,000 1,000
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
11,925 13,293

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Café Brazil, LLC April 20, 2004 Casual Restaurant Group
<br> Member Units (1,233 units)(8) 1,742 2,440
California Splendor Holdings LLC March 30, 2018 Processor of Frozen Fruits
LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 10.13%, Secured Debt (Maturity—March 30, 2023)(9) 7,229 7,104 7,104
LIBOR Plus 10.00% (Floor 1.00%), Current Coupon 12.13%, Secured Debt (Maturity—March 30, 2023)(9) 28,000 27,801 27,801
Preferred Member Units (6,725 units)(8) 7,163 7,163
Preferred Member Units (6,157 units)(8) 10,775 7,382
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
52,843 49,450
CBT Nuggets, LLC ("CBT") June 1, 2006 Produces and Sells IT Training Certification Videos
<br> Member Units (416 units)(8) 1,300 50,850
Centre Technologies Holdings, LLC January 4, 2019 Provider of IT Hardware Services and Software Solutions
LIBOR Plus 9.00% (Floor 2.00%), Current Coupon 10.75%, Secured Debt (Maturity—January 4, 2024)(9) 12,240 12,136 12,136
Preferred Member Units (12,696 units) 5,840 5,840
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
17,976 17,976
Chamberlin Holding LLC February 26, 2018 Roofing and Waterproofing Specialty Contractor
<br> LIBOR Plus 10.00% (Floor 1.00%), Current Coupon 12.00%, Secured Debt (Maturity—February 26, 2023)(9) 17,773 17,649 17,773
<br> Member Units (4,347 units)(8) 11,440 24,040
<br> Member Units (Chamberlin Langfield Real Estate, LLC) (1,047,146 units)(8) 1,047 1,450
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 30,136 43,263
Charps, LLC February 3, 2017 Pipeline Maintenance and Construction
15.00% Secured Debt (Maturity—June 5, 2022) 2,000 2,000 2,000
Preferred Member Units (1,600 units)(8) 400 6,920
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
2,400 8,920
Clad-Rex Steel, LLC December 20, 2016 Specialty Manufacturer of Vinyl-Clad Metal
<br> LIBOR Plus 9.00% (Floor 1.00%), Current Coupon 10.71%, Secured Debt (Maturity—December 20, 2021)(9) 10,880 10,830 10,781
<br> Member Units (717 units)(8) 7,280 9,630
<br> 10.00% Secured Debt (Clad-Rex Steel RE Investor, LLC) (Maturity—December 20, 2036) 1,137 1,126 1,137
<br> Member Units (Clad-Rex Steel RE Investor, LLC) (800 units) 210 460
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 19,446 22,008
CMS Minerals Investments January 30, 2015 Oil & Gas Exploration & Production
Member Units (CMS Minerals II, LLC) (100 units)(8) 2,386 1,900

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
CompareNetworks Topco, LLC January 29, 2019 Internet Publishing and Web Search Portals
<br> LIBOR Plus 11.00% (Floor 1.00%), Current Coupon 12.75%, Secured Debt (Maturity—January 29, 2024)(9) 8,364 8,288 8,288
<br> Preferred Member Units (1,975 units) 1,975 3,010
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 10,263 11,298
Copper Trail Fund Investments(12)(13) July 17, 2017 Investment Partnership
LP Interests (CTMH, LP) (Fully diluted 38.8%) 872 872
Datacom, LLC May 30, 2014 Technology and Telecommunications Provider
<br> 8.00% Secured Debt (Maturity—May 31, 2021)(14) 1,800 1,800 1,615
<br> 10.50% PIK Secured Debt (Maturity—May 31, 2021)(14)(19) 12,507 12,475 10,142
<br> Class A Preferred Member Units 1,294 —
<br> Class B Preferred Member Units (6,453 units) 6,030 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 21,599 11,757
Digital Products Holdings LLC April 1, 2018 Designer and Distributor of Consumer Electronics
LIBOR Plus 10.00% (Floor 1.00%), Current Coupon 11.75%, Secured Debt (Maturity—April 1, 2023)(9) 19,620 19,478 18,452
Preferred Member Units (3,857 shares)(8) 9,501 5,174
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
28,979 23,626
Direct Marketing Solutions, Inc. February 13, 2018 Provider of Omni-Channel Direct Marketing Services
<br> LIBOR Plus 11.00% (Floor 1.00%), Current Coupon 12.75%, Secured Debt (Maturity—February 13, 2023)(9) 15,717 15,597 15,707
<br> Preferred Stock (8,400 shares) 8,400 20,200
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 23,997 35,907
Gamber-Johnson Holdings, LLC ("GJH") June 24, 2016 Manufacturer of Ruggedized Computer Mounting Systems
LIBOR Plus 6.50% (Floor 2.00%), Current Coupon 8.50%, Secured Debt (Maturity—June 24, 2021)(9) 19,022 18,949 19,022
Member Units (8,619 units)(8) 14,844 53,410
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
33,793 72,432

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Garreco, LLC July 15, 2013 Manufacturer and Supplier of Dental Products
<br> LIBOR Plus 8.00% (Floor 1.00%, Ceiling 1.50%), Current Coupon 9.50%, Secured Debt (Maturity—March 31, 2020)(9) 4,519 4,515 4,515
<br> Member Units (1,200 units) 1,200 2,560
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 5,715 7,075
GRT Rubber Technologies LLC ("GRT") December 19, 2014 Manufacturer of Engineered Rubber Products
LIBOR Plus 7.00%, Current Coupon 8.71%, Secured Debt (Maturity—December 31, 2023) 15,016 15,016 15,016
Member Units (5,879 units) 13,065 47,450
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
28,081 62,466
Guerdon Modular Holdings, Inc. August 13, 2014 Multi-Family and Commercial Modular Construction Company
<br> LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 10.60%, Secured Debt (Maturity—October 1, 2019)(9)(14)(17) 1,010 1,010 —
<br> 16.00% Secured Debt (Maturity—October 1, 2019)(14)(17) 12,588 12,588 —
<br> Preferred Stock (404,998 shares) 1,140 —
<br> Common Stock (212,033 shares) 2,983 —
<br> Warrants (6,208,877 equivalent shares; Expiration— April 25, 2028; Strike price—0.01 per share) — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 17,721 —
Gulf Manufacturing, LLC August 31, 2007 Manufacturer of Specialty Fabricated Industrial Piping Products
Member Units (438 units)(8) 2,980 7,430
Gulf Publishing Holdings, LLC April 29, 2016 Energy Industry Focused Media and Publishing
<br> LIBOR Plus 9.50% (Floor 1.00%), Current Coupon 11.21%, Secured Debt (Maturity—September 30, 2020)(9) 280 280 280
<br> 12.50% Secured Debt (Maturity—April 29, 2021) 12,535 12,493 12,493
<br> Member Units (3,681 units) 3,681 2,420
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 16,454 15,193
Harborside Holdings, LLC March 20, 2017 Real Estate Holding Company
Member units (100 units) 6,506 9,560
Harris Preston Fund Investments(12)(13) October 1, 2017 Investment Partnership
<br> LP Interests (2717 MH, L.P.) (Fully diluted 49.3%) 2,735 3,157
Harrison Hydra-Gen, Ltd. June 4, 2010 Manufacturer of Hydraulic Generators
Common Stock (107,456 shares)(8) 718 7,970
IDX Broker, LLC November 15, 2013 Provider of Marketing and CRM Tools for the Real Estate Industry
<br> 11.50% Secured Debt (Maturity—November 15, 2020) 13,400 13,358 13,400
<br> Preferred Member Units (5,607 units)(8) 5,952 15,040
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 19,310 28,440

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Jensen Jewelers of Idaho, LLC November 14, 2006 Retail Jewelry Store
Prime Plus 6.75% (Floor 2.00%), Current Coupon 11.50%, Secured Debt (Maturity—November 14, 2023)(9) 4,000 3,960 4,000
Member Units (627 units)(8) 811 8,270
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
4,771 12,270
J&J Services, Inc. October 31, 2019 Provider of Dumpster and Portable Toilet Rental Services
<br> 11.50% Secured Debt (Maturity—October 31, 2024) 17,600 17,430 17,430
<br> Preferred Stock (2,814 shares) 7,160 7,160
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 24,590 24,590
KBK Industries, LLC January 23, 2006 Manufacturer of Specialty Oilfield and Industrial Products
Member Units (325 units)(8) 783 15,470
Kickhaefer Manufacturing Company, LLC October 31, 2018 Precision Metal Parts Manufacturing
<br> 11.50% Secured Debt (Maturity—October 31, 2023) 25,200 24,982 24,982
<br> Member Units (581 units) 12,240 12,240
<br> 9.00% Secured Debt (Maturity—October 31, 2048) 3,978 3,939 3,939
<br> Member Units (KMC RE Investor, LLC) (800 units)(8) 992 1,160
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 42,153 42,321
Market Force Information, LLC July 28, 2017 Provider of Customer Experience Management Services
8.00% Secured Debt (Maturity—July 28, 2022) 2,786 2,786 2,695
6.00% Current / 6.00% PIK Secured Debt (Maturity—July 28, 2022)(19) 23,292 23,157 22,621
Member Units (743,921 units) 16,642 5,280
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
42,585 30,596
MH Corbin Holding LLC August 31, 2015 Manufacturer and Distributor of Traffic Safety Products
<br> 5.00% Current / 5.00% PIK Secured Debt (Maturity—March 31, 2022)(19) 8,890 8,815 8,890
<br> Preferred Member Units (66,000 shares) 4,400 4,770
<br> Preferred Member Units (4,000 shares) 6,000 20
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 19,215 13,680
Mid-Columbia Lumber Products, LLC December 18, 2006 Manufacturer of Finger-Jointed Lumber Products
10.00% Secured Debt (Maturity—January 15, 2020) 1,750 1,750 1,602
12.00% Secured Debt (Maturity—January 15, 2020) 3,900 3,898 3,644
Member Units (7,874 units) 3,239 —
9.50% Secured Debt (Mid-Columbia Real Estate, LLC) (Maturity—May 13, 2025) 701 701 701
Member Units (Mid-Columbia Real Estate, LLC) (500 units)(8) 790 1,640
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
10,378 7,587

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
MSC Adviser I, LLC(16) November 22, 2013 Third Party Investment Advisory Services
<br> Member Units (Fully diluted 100.0%)(8) — 74,520
Mystic Logistics Holdings, LLC August 18, 2014 Logistics and Distribution Services Provider for Large Volume Mailers
12.00% Secured Debt (Maturity—August 15. 2019)(17) 6,253 6,253 6,253
Common Stock (5,873 shares)(8) 2,720 8,410
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
8,973 14,663
NAPCO Precast, LLC January 31, 2008 Precast Concrete Manufacturing
<br> Member Units (2,955 units)(8) 2,975 14,760
NexRev LLC February 28, 2018 Provider of Energy Efficiency Products & Services
11.00% Secured Debt (Maturity—February 28, 2023) 17,586 17,469 17,469
Preferred Member Units (86,400,000 units)(8) 6,880 6,310
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
24,349 23,779
NRI Clinical Research, LLC September 8, 2011 Clinical Research Service Provider
<br> 14.00% Secured Debt (Maturity—June 8, 2022) 5,981 5,885 5,981
<br> Warrants (251,723 equivalent units; Expiration—June 8, 2027; Strike price—0.01 per unit) 252 1,230
<br> Member Units (1,454,167 units)(8) 765 4,988
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 6,902 12,199
NRP Jones, LLC December 22, 2011 Manufacturer of Hoses, Fittings and Assemblies
12.00% Secured Debt (Maturity—March 20, 2023) 6,376 6,376 6,376
Member Units (65,962 units)(8) 3,717 4,710
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
10,093 11,086
NuStep, LLC January 31, 2017 Designer, Manufacturer and Distributor of Fitness Equipment
<br> 12.00% Secured Debt (Maturity—January 31, 2022) 19,800 19,703 19,703
<br> Preferred Member Units (406 units) 10,200 10,200
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 29,903 29,903
OMi Holdings, Inc. April 1, 2008 Manufacturer of Overhead Cranes
Common Stock (1,500 shares)(8) 1,080 16,950
Pegasus Research Group, LLC January 6, 2011 Provider of Telemarketing and Data Services
<br> Member Units (460 units) 1,290 8,170
PPL RVs, Inc. June 10, 2010 Recreational Vehicle Dealer
LIBOR Plus 8.75% (Floor 0.50%), Current Coupon 10.85%, Secured Debt (Maturity—November 15, 2022)(9) 12,245 12,118 12,118
Common Stock (1,962 shares) 2,150 9,930
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
14,268 22,048

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Principle Environmental, LLC (d/b/a TruHorizon Environmental Solutions) February 1, 2011 Noise Abatement Service Provider
<br> 13.00% Secured Debt (Maturity—April 30, 2020) 6,397 6,379 6,397
<br> Preferred Member Units (19,631 units)(8) 4,600 13,390
<br> Warrants (1,018 equivalent units; Expiration—January 31, 2021; Strike price—0.01 per unit) 1,200 1,090
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 12,179 20,877
Quality Lease Service, LLC June 8, 2015 Provider of Rigsite Accommodation Unit Rentals and Related Services
Member Units (1,000 units) 11,013 9,289
River Aggregates, LLC March 30, 2011 Processor of Construction Aggregates
<br> Zero Coupon Secured Debt (Maturity—June 30, 2018)(17) 750 750 722
<br> Member Units (1,150 units) 1,150 4,990
<br> Member Units (RA Properties, LLC) (1,500 units) 369 3,169
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 2,269 8,881
Tedder Industries, LLC August 31, 2018 Manufacturer of Firearm Holsters and Accessories
12.00% Secured Debt (Maturity—August 31, 2020) 640 640 640
12.00% Secured Debt (Maturity—August 31, 2023) 16,400 16,272 16,272
Preferred Member Units (479 units) 8,136 8,136
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
25,048 25,048
The MPI Group, LLC October 2, 2007 Manufacturer of Custom Hollow Metal Doors, Frames and Accessories
<br> 9.00% Secured Debt (Maturity—December 31, 2019)(17) 2,924 2,924 2,924
<br> Series A Preferred Units (2,500 units) 2,500 —
<br> Warrants (1,424 equivalent units; Expiration—July 1, 2024; Strike price—0.01 per unit) 1,096 —
<br> Member Units (MPI Real Estate Holdings, LLC) (100 units)(8) 2,300 1,640
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 8,820 4,564
Trantech Radiator Topco, LLC May 31, 2019 Transformer Cooling Products and Services
12.00% Secured Debt (Maturity—May 31, 2024) 9,200 9,102 9,102
Common Stock (615 shares)(8) 4,655 4,655
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
13,757 13,757
Vision Interests, Inc. June 5, 2007 Manufacturer / Installer of Commercial Signage
<br> 13.00% Secured Debt (Maturity—September 30, 2019)(17) 2,028 2,028 2,028
<br> Series A Preferred Stock (3,000,000 shares) 3,000 4,089
<br> Common Stock (1,126,242 shares) 3,706 409
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 8,734 6,526

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Ziegler's NYPD, LLC October 1, 2008 Casual Restaurant Group
6.50% Secured Debt (Maturity—October 1, 2020) 1,000 1,000 1,000
12.00% Secured Debt (Maturity—October 1, 2020) 625 625 625
14.00% Secured Debt (Maturity—October 1, 2020) 2,750 2,750 2,750
Warrants (587 equivalent units; Expiration—October 1, 2020; Strike price—0.01 per unit) 600 —
Preferred Member Units (10,072 units) 2,834 1,269
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
7,809 5,644
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Subtotal Control Investments (67.2% of net assets at fair value) $ 778,367 $ 1,032,721
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Affiliate Investments(6)
AFG Capital Group, LLC November 7, 2014 Provider of Rent-to-Own Financing Solutions and Services
10.00% Secured Debt (Maturity—May 25, 2022) $ 838 $ 838 $ 838
Preferred Member Units (186 units) 1,200 5,180
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
2,038 6,018
American Trailer Rental Group LLC June 7, 2017 Provider of Short-term Trailer and Container Rental
<br> LIBOR Plus 7.25% (Floor 1.00%), Current Coupon 9.34%, Secured Debt (Maturity—June 7, 2022)(9) 27,087 26,905 27,087
<br> Member Units (Milton Meisler Holdings LLC) (48,555 units) 4,855 8,540
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 31,760 35,627
BBB Tank Services, LLC April 8, 2016 Maintenance, Repair and Construction Services to the Above-Ground Storage Tank Market
LIBOR Plus 11.00% (Floor 1.00%), Current Coupon 12.71%, (Maturity—April 8, 2021)(9) 4,800 4,698 4,698
Preferred Stock (non-voting)(8) 131 131
Member Units (800,000 units) 800 290
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
5,629 5,119
Boccella Precast Products LLC June 30, 2017 Manufacturer of Precast Hollow Core Concrete
<br> LIBOR Plus 12.00% (Floor 1.00%), Current Coupon 14.10%, Secured Debt (Maturity—June 30, 2022)(9) 13,244 13,106 13,244
<br> Member Units (2,160,000 units)(8) 2,256 6,270
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 15,362 19,514
Buca C, LLC June 30, 2015 Casual Restaurant Group
LIBOR Plus 9.25% (Floor 1.00%), Current Coupon 10.94%, Secured Debt (Maturity—June 30, 2020)(9) 19,004 18,981 18,794
Preferred Member Units (6 units; 6% cumulative)(8)(19) 4,701 4,701
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
23,682 23,495
CAI Software LLC October 10, 2014 Provider of Specialized Enterprise Resource Planning Software
<br> 11.00% Secured Debt (Maturity—December 7, 2023) 9,160 9,077 9,160
<br> Member Units (66,968 units)(8) 751 5,210
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 9,828 14,370
Chandler Signs Holdings, LLC(10) January 4, 2016 Sign Manufacturer
Class A Units (1,500,000 units)(8) 1,500 2,740
Charlotte Russe, Inc(11) May 28, 2013 Fast-Fashion Retailer to Young Women
<br> Common Stock (19,041 shares) 3,141 —
Congruent Credit Opportunities Funds(12)(13) January 24, 2012 Investment Partnership
LP Interests (Congruent Credit Opportunities Fund II, LP) (Fully diluted 19.8%) 5,210 855
LP Interests (Congruent Credit Opportunities Fund III, LP) (Fully diluted 17.4%)(8) 13,601 13,915
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
18,811 14,770

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Copper Trail Fund Investments(12)(13) July 17, 2017 Investment Partnership
<br> LP Interests (Copper Trail Energy Fund I, LP) (Fully diluted 12.4%)(8) 1,997 2,362
Dos Rios Partners(12)(13) April 25, 2013 Investment Partnership
LP Interests (Dos Rios Partners, LP) (Fully diluted 20.2%) 5,846 7,033
LP Interests (Dos Rios Partners—A, LP) (Fully diluted 6.4%) 1,856 2,233
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
7,702 9,266
East Teak Fine Hardwoods, Inc. April 13, 2006 Distributor of Hardwood Products
<br> Common Stock (6,250 shares)(8) 480 400
EIG Fund Investments(12)(13) November 6, 2015 Investment Partnership
LP Interests (EIG Global Private Debt Fund-A, L.P.) (Fully diluted 11.1%)(8) 768 720
Freeport Financial Funds(12)(13) June 13, 2013 Investment Partnership
<br> LP Interests (Freeport Financial SBIC Fund LP) (Fully diluted 9.3%) 5,974 5,778
<br> LP Interests (Freeport First Lien Loan Fund III LP) (Fully diluted 6.0%)(8) 9,956 9,696
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 15,930 15,474
Fuse, LLC(11) June 30, 2019 Cable Networks Operator
12% Secured Debt (Maturity—June 28, 2024) 1,939 1,939 1,939
Common Stock (10,429 shares) 256 256
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
2,195 2,195
Harris Preston Fund Investments(12)(13) August 9, 2017 Investment Partnership
<br> LP Interests (HPEP 3, L.P.) (Fully diluted 8.2%) 2,474 2,474
Hawk Ridge Systems, LLC(13) December 2, 2016 Value-Added Reseller of Engineering Design and Manufacturing Solutions
LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.71%, Secured Debt (Maturity—December 2, 2021)(9) 600 600 600
11.00% Secured Debt (Maturity—December 2, 2021) 13,400 13,335 13,400
Preferred Member Units (226 units)(8) 2,850 7,900
Preferred Member Units (HRS Services, ULC) (226 units) 150 420
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
16,935 22,320
Houston Plating and Coatings, LLC January 8, 2003 Provider of Plating and Industrial Coating Services
<br> 8.00% Unsecured Convertible Debt (Maturity—May 1, 2022) 3,000 3,000 4,260
<br> Member Units (322,297 units)(8) 2,352 10,330
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 5,352 14,590
I-45 SLF LLC(12)(13) October 20, 2015 Investment Partnership
Member Units (Fully diluted 20.0%; 24.4% profits interest)(8) 17,000 14,407

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
L.F. Manufacturing Holdings, LLC(10) December 23, 2013 Manufacturer of Fiberglass Products
<br> Preferred Member Units (non-voting; 14% cumulative)(8)(19) 81 81
<br> Member Units (2,179,001 units) 2,019 2,050
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 2,100 2,131
OnAsset Intelligence, Inc. April 18, 2011 Provider of Transportation Monitoring / Tracking Products and Services
12.00% PIK Secured Debt (Maturity—June 30, 2021)(19) 6,474 6,474 6,474
10.00% PIK Unsecured Debt (Maturity—June 30, 2021)(19) 58 58 58
Preferred Stock (912 shares) 1,981 —
Warrants (5,333 equivalent shares; Expiration—April 18, 2021; Strike price—0.01 per share) 1,919 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
10,432 6,532
PCI Holding Company, Inc. December 18, 2012 Manufacturer of Industrial Gas Generating Systems
<br> 12.00% Current, Secured Debt (Maturity—March 31, 2020) 11,356 11,356 11,356
<br> Preferred Stock (1,740,000 shares) (non-voting) 1,740 4,350
<br> Preferred Stock (1,500,000 shares) 3,927 2,680
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 17,023 18,386
Rocaceia, LLC (Quality Lease and Rental Holdings, LLC) January 8, 2013 Provider of Rigsite Accommodation Unit Rentals and Related Services
12.00% Secured Debt (Maturity—January 8, 2018)(14)(15) 30,369 29,865 —
Preferred Member Units (250 units) 2,500 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
32,365 —
Salado Stone Holdings, LLC (10) June 27, 2016 Limestone and Sandstone Dimension Cut Stone Mining Quarries
<br> Class A Preferred Units (Salado Acquisition, LLC) (2,000,000 units) 2,000 570
SI East, LLC August 31, 2018 Rigid Industrial Packaging Manufacturing
9.50% Current, Secured Debt (Maturity—August 31, 2023) 32,963 32,687 32,963
Preferred Member Units (157 units)(8) 6,000 8,200
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
38,687 41,163
Slick Innovations, Inc. September 13, 2018 Text Message Marketing Platform
<br> 14.00% Current, Secured Debt (Maturity—September 13, 2023) 6,360 6,197 6,197
<br> Common Stock (70,000 shares)(8) 700 1,080
<br> Warrants (18,084 equivalent units; Expiration—September 13, 2028; Strike price—0.01 per unit) 181 290
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 7,078 7,567

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
UniTek Global Services, Inc.(11) April 15, 2011 Provider of Outsourced Infrastructure Services
LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 8.41%, Secured Debt (Maturity—August 20, 2024)(9) 2,963 2,940 2,962
Preferred Stock (755,401 shares; 20% cumulative)(8)(19) 809 1,889
Preferred Stock (1,521,122 shares; 19% cumulative)(8)(19) 1,976 2,282
Preferred Stock (2,281,682 shares; 19% cumulative)(8)(19) 3,667 3,667
Preferred Stock (4,336,866 shares; 13.50% cumulative)(8)(19) 7,924 2,684
Common Stock (945,507 shares) — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
17,316 13,484
Universal Wellhead Services Holdings, LLC(10) October 30, 2014 Provider of Wellhead Equipment, Designs, and Personnel to the Oil & Gas Industry
<br> Preferred Member Units (UWS Investments, LLC) (716,949 units; 14% cumulative)(8)(19) 1,032 800
<br> Member Units (UWS Investments, LLC) (4,000,000 units) 4,000 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 5,032 800
Volusion, LLC January 26, 2015 Provider of Online Software-as-a-Service eCommerce Solutions
11.50% Secured Debt (Maturity—January 26, 2020) 20,234 20,162 19,352
8.00% Unsecured Convertible Debt (Maturity—November 16, 2023) 409 409 291
Preferred Member Units (4,876,670 units) 14,000 14,000
Warrants (1,831,355 equivalent units; Expiration—January 26, 2025; Strike price—0.01 per unit) 2,576 150
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
37,147 33,793
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Subtotal Affiliate Investments (21.5% of net assets at fair value) $ 351,764 $ 330,287
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Non-Control/Non-Affiliate Investments(7)
AAC Holdings, Inc.(11) June 30, 2017 Substance Abuse Treatment Service Provider
LIBOR Plus 11.00% (Floor 1.00%), Current Coupon 13.03%, Secured Debt (Maturity—April 15, 2020)(9)(14) 2,227 2,068 2,172
LIBOR Plus 12.75% (Floor 1.00%), Current Coupon 16.50%, Secured Debt (Maturity—June 30, 2023)(9)(14) 14,396 14,030 9,358
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
16,098 11,530
Adams Publishing Group, LLC(10) November 19, 2015 Local Newspaper Operator
<br> Prime Plus 5.00% (Floor 1.50%), Current Coupon 8.75%, Secured Debt (Maturity—July 3, 2023)(9) 5,000 4,930 5,000
<br> LIBOR Plus 7.50% (Floor 1.50%), Current Coupon 9.44%, Secured Debt (Maturity—July 3, 2023)(9) 6,158 6,058 6,158
<br> LIBOR Plus 7.50% (Floor 1.50%), Current Coupon 9.50%, Secured Debt (Maturity—July 3, 2023)(9) 197 197 197
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 11,185 11,355
ADS Tactical, Inc.(10) March 7, 2017 Value-Added Logistics and Supply Chain Provider to the Defense Industry
LIBOR Plus 6.25% (Floor 0.75%), Current Coupon 8.03%, Secured Debt (Maturity—July 26, 2023)(9) 19,843 19,703 19,843
Aethon United BR LP(10) September 8, 2017 Oil & Gas Exploration & Production
<br> LIBOR Plus 6.75% (Floor 1.00%), Current Coupon 8.46%, Secured Debt (Maturity—September 8, 2023)(9) 9,750 9,630 9,531
Affordable Care Holding Corp.(10) May 9, 2019 Dental Service Organization
LIBOR Plus 4.75% (Floor 1.00%), Current Coupon 6.59%, 14,396 14,126 14,036
Secured Debt (Maturity—October 22, 2022)(9)
ALKU, LLC.(11) October 18, 2019 Specialty National Staffing Operator
<br> LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 7.44%, Secured Debt (Maturity—July 29, 2026)(9) 10,000 9,902 9,883
Allen Media, LLC.(11) September 18, 2018 Operator of Cable Television Networks
LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 8.48%, Secured Debt (Maturity—August 30, 2023)(9) 16,270 15,894 15,863
Allen Media Broadcasting LLC(10) July 3, 2019 Operator of Television Broadcasting Networks
<br> LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 8.21%, Secured Debt (Maturity—July 3, 2024)(9) 14,906 14,565 14,565
American Nuts, LLC(10) April 10, 2018 Roaster, Mixer and Packager of Bulk Nuts and Seeds LIBOR Plus 9.50% (Floor 1.00%), Current Coupon 11.60%, Secured Debt (Maturity—April 10, 2023)(9) 12,243 12,002 12,233

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
American Teleconferencing Services, Ltd.(11) May 19, 2016 Provider of Audio Conferencing and Video Collaboration Solutions
<br> LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 8.36%, Secured Debt (Maturity—June 8, 2023)(9) 17,389 16,421 10,460
APTIM Corp.(11) August 17, 2018 Engineering, Construction & Procurement
7.75% Secured Debt (Maturity—June 15, 2025) 12,452 10,836 7,471
Arcus Hunting LLC(10) January 6, 2015 Manufacturer of Bowhunting and Archery Products and Accessories
<br> LIBOR Plus 10.00% (Floor 1.00%), Current Coupon 12.10%, Secured Debt (Maturity—January 13, 2020)(9) 13,857 13,856 13,856
ASC Ortho Management Company, LLC(10) August 31, 2018 Provider of Orthopedic Services
LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 9.60%, Secured Debt (Maturity—August 31, 2023)(9) 4,543 4,465 4,490
13.25% PIK Secured Debt (Maturity—December 1, 2023)(19) 1,854 1,821 1,854
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 6,286 6,344
ATI Investment Sub, Inc.(11) July 11, 2016 Manufacturer of Solar Tracking Systems
LIBOR Plus 7.25% (Floor 1.00%), Current Coupon 9.01%, Secured Debt (Maturity—June 22, 2021)(9) 2,885 2,859 2,853
ATX Networks Corp.(11)(13)(21) June 30, 2015 Provider of Radio Frequency Management Equipment
<br> LIBOR Plus 6.00% (Floor 1.00%) Current Coupon 7.94% / 1.00% PIK, Current Coupon Plus PIK 8.94% Secured Debt (Maturity—June 11,<br>2021)(9)(19) 13,593 13,414 12,743
Barfly Ventures, LLC(10) August 31, 2015 Casual Restaurant Group
12.00% Secured Debt (Maturity—August 31, 2020) 10,185 10,073 7,736
Options (3 equivalent units) 607 —
Warrant (2 equivalent unit; Expiration—August 31, 2025; Strike price—1.00 per unit) 473 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
11,153 7,736
Berry Aviation, Inc.(10) July 6, 2018 Charter Airline Services
<br> 10.50% Current / 1.5% PIK, Secured Debt (Maturity—January 6, 2024)(19) 4,554 4,518 4,554
<br> Preferred Member Units (Berry Acquisition, LLC) (122,416 units; 16% cumulative)(8)(19) 125 125
<br> Preferred Member Units (Berry Acquisition, LLC) (1,548,387 units; 8% cumulative)(8)(19) 1,671 776
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 6,314 5,455

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
BigName Commerce, LLC(10) May 11, 2017 Provider of Envelopes and Complimentary Stationery Products
LIBOR Plus 7.25% (Floor 1.00%), Current Coupon 9.35%, Secured Debt (Maturity—May 11, 2022)(9) 2,233 2,218 2,233
Binswanger Enterprises, LLC(10) March 10, 2017 Glass Repair and Installation Service Provider
<br> LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 10.41%, Secured Debt (Maturity—March 9, 2022)(9) 13,731 13,443 13,731
<br> Member Units (1,050,000 units) 1,050 950
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 14,493 14,681
Bluestem Brands, Inc.(11) December 19, 2013 Multi-Channel Retailer of General Merchandise
LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 9.31%, Secured Debt (Maturity—November 6, 2020)(9) 10,622 10,571 7,973
Bojangles', Inc.(11) February 5, 2019 Quick Service Restaurant Group
<br> LIBOR Plus 4.75%, Current Coupon 6.50%, Secured Debt (Maturity—January 28, 2026) 7,782 7,642 7,827
<br> LIBOR Plus 8.50%, Current Coupon 10.25%, Secured Debt (Maturity—January 28, 2027) 5,000 4,907 5,012
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 12,549 12,839
Brainworks Software, LLC(10) August 12, 2014 Advertising Sales and Newspaper Circulation Software
4.00% Secured Debt (Maturity—July 22, 2019)(9)(17) 6,733 6,733 5,955
Brightwood Capital Fund Investments(12)(13) July 21, 2014 Investment Partnership
<br> LP Interests (Brightwood Capital Fund III, LP) (Fully diluted 1.6%)(8) 11,160 9,005
<br> LP Interests (Brightwood Capital Fund IV, LP) (Fully diluted 0.6%)(8) 4,500 4,504
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 15,660 13,509
Cadence Aerospace LLC(10) November 14, 2017 Aerostructure Manufacturing
LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 8.40%, Secured Debt (Maturity—November 14, 2023)(9) 25,287 25,089 25,287
California Pizza Kitchen, Inc.(11) August 29, 2016 Casual Restaurant Group
<br> LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.91%, Secured Debt (Maturity—August 23, 2022)(9) 14,599 14,501 12,739
Central Security Group, Inc.(11) December 4, 2017 Security Alarm Monitoring Service Provider
LIBOR Plus 5.63% (Floor 1.00%), Current Coupon 7.38%, Secured Debt (Maturity—October 6, 2021)(9) 13,776 13,734 11,985

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Cenveo Corporation(11) September 4, 2015 Provider of Digital Marketing Agency Services
<br> Libor Plus 9.50% (Floor 1.00%), Current Coupon 11.45%, Secured Debt (Maturity—June 7, 2023)(9) 5,674 5,498 5,674
<br> Common Stock (177,130 shares) 5,309 2,923
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 10,807 8,597
Chisholm Energy Holdings, LLC(10) May 15, 2019 Oil & Gas Exploration & Production
LIBOR Plus 6.25% (Floor 1.50%), Current Coupon 8.16%, Secured Debt (Maturity—May 15, 2026)(9) 3,571 3,488 3,488
Clarius BIGS, LLC(10) September 23, 2014 Prints & Advertising Film Financing
<br> 15% PIK Secured Debt (Maturity—January 5, 2015)(14)(17) 2,846 2,846 40
Clickbooth.com, LLC(10) December 5, 2017 Provider of Digital Advertising Performance Marketing Solutions
LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 10.59%, Secured Debt (Maturity—December 5, 2022)(9) 2,663 2,625 2,663
Construction Supply Investments, LLC(10) December 29, 2016 Distribution Platform of Specialty Construction Materials to Professional Concrete and Masonry Contractors
<br> Member Units (46,152 units) 4,866 7,667
Corel Corporation(11)(13)(21) July 24, 2019 Publisher of Desktop and Cloud-based Software
LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.91%, Secured Debt (Maturity—July 2, 2026)(9) 15,000 14,293 14,531
CTVSH, PLLC(10) August 3, 2017 Emergency Care and Specialty Service Animal Hospital
<br> LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 9.91%, Secured Debt (Maturity—August 3, 2022)(9) 10,099 10,039 10,099
Darr Equipment LP(10) April 15, 2014 Heavy Equipment Dealer
<br> 11.5% Current / 1% PIK Secured Debt (Maturity -June 22, 2023)(19) 5,899 5,899 5,899
<br> Warrants (915,734 equivalent units; Expiration—December 23, 2023; Strike price—1.50 per unit) 474 300
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 6,373 6,199
Digital River, Inc.(11) February 24, 2015 Provider of Outsourced e-Commerce Solutions and Services
LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.90%, Secured Debt (Maturity—February 12, 2021)(9) 15,876 15,771 15,837

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
DTE Enterprises, LLC(10) April 13, 2018 Industrial Powertrain Repair and Services
<br> LIBOR Plus 7.50% (Floor 1.50%), Current Coupon 9.24%, Secured Debt (Maturity—April 13, 2023)(9) 10,992 10,827 10,982
<br> Class AA Preferred Member Units (non-voting; 10% cumulative)(8)(19) 860 860
<br> Class A Preferred Member Units (776,316 units) 776 1,490
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 12,463 13,332
Dynamic Communities, LLC(10) July 17, 2018 Developer of Business Events and Online Community Groups
LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 9.75%, Secured Debt (Maturity—July 17, 2023)(9) 5,460 5,375 5,458
Echo US Holdings, LLC.(10) November 12, 2019 Developer and Manufacturer of PVC and Polypropylene Materials
<br> LIBOR Plus 6.25% (Floor 1.63%), Current Coupon 7.96%, Secured Debt (Maturity—October 25, 2024)(9) 22,414 22,292 22,292
EnCap Energy Fund Investments(12)(13) December 28, 2010 Investment Partnership
LP Interests (EnCap Energy Capital Fund VIII, L.P.) (Fully diluted 0.1%)(8) 3,617 1,354
LP Interests (EnCap Energy Capital Fund VIII Co-Investors, L.P.) (Fully diluted 0.4%) 2,097 703
LP Interests (EnCap Energy Capital Fund IX, L.P.) (Fully diluted 0.1%)(8) 4,360 2,780
LP Interests (EnCap Energy Capital Fund X, L.P.) (Fully diluted 0.1%)(8) 8,427 8,822
LP Interests (EnCap Flatrock Midstream Fund II, L.P.) (Fully diluted 0.8%)(8) 7,337 5,669
LP Interests (EnCap Flatrock Midstream Fund III, L.P.) (Fully diluted 0.2%)(8) 6,674 6,677
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 32,512 26,005
Encino Acquisition Partners Holdings, Inc.(11) November 16, 2018 Oil & Gas Exploration & Production
LIBOR Plus 6.75% (Floor 1.00%), Current Coupon 8.50%, Secured Debt (Maturity—October 29, 2025)(9) 9,000 8,921 6,795
EPIC Y-Grade Services, LP(11) June 22, 2018 NGL Transportation & Storage
<br> LIBOR Plus 6.00%, Current Coupon 8.04%, Secured Debt (Maturity—June 13, 2024) 10,275 10,116 10,050
Evergreen Skills Lux S.á r.l. (d/b/a Skillsoft)(11)(13) May 5, 2014 Technology-based Performance Support Solutions
LIBOR Plus 8.25% (Floor 1.00%), Current Coupon 10.45%, Secured Debt (Maturity—April 28, 2022)(9) 6,999 6,928 1,965

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Felix Investments Holdings II(10) August 9, 2017 Oil & Gas Exploration & Production
<br> LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 8.40%, Secured Debt (Maturity—August 9, 2022)(9) 5,000 4,944 5,000
Flavors Holdings Inc.(11) October 15, 2014 Global Provider of Flavoring and Sweetening Products
LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 7.77%, Secured Debt (Maturity—April 3, 2020)(9) 11,297 11,247 10,619
Fortna, Inc.(10) July 23, 2019 Process, Physcial Distribution and Logistics Consulting Services
<br> LIBOR Plus 5.00%, Current Coupon 6.75%, Secured Debt (Maturity—April 8, 2025) 7,751 7,577 7,577
GeoStabilization International (GSI)(11) December 31, 2018 Geohazard Engineering Services & Maintenance
LIBOR Plus 5.25%, Current Coupon 7.05%, Secured Debt (Maturity—December 19, 2025) 16,376 16,230 16,335
GoWireless Holdings, Inc. (11) December 31, 2017 Provider of Wireless Telecommunications Carrier Services
LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 8.25%, Secured Debt (Maturity—December 22, 2024)(9) 18,120 17,964 17,471
Grupo Hima San Pablo, Inc.(11) March 7, 2013 Tertiary Care Hospitals
<br> LIBOR Plus 7.00% (Floor 1.50%), Current Coupon 8.91%, Secured Debt (Maturity—April 30, 2019)(9)(17) 4,504 4,504 3,343
<br> 13.75% Secured Debt (Maturity—October 15, 2018)(17) 2,055 2,040 167
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 6,544 3,510
GS HVAM Intermediate, LLC(10) October 18, 2019 Specialized Food Distributor
LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 7.51%, Secured Debt (Maturity—October 2, 2024)(9) 11,364 11,233 11,233
HDC/HW Intermediate Holdings(10) December 21, 2018 Managed Services and Hosting Provider
<br> LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 9.53%, Secured Debt (Maturity—December 21, 2023)(9) 3,498 3,440 3,493
Hoover Group, Inc.(10)(13) October 21, 2016 Provider of Storage Tanks and Related Products to the Energy and Petrochemical Markets
LIBOR Plus 7.25% (Floor 1.00%), Current Coupon 9.26%, Secured Debt (Maturity—January 28, 2021)(9) 20,764 20,119 19,206
Hunter Defense Technologies, Inc.(10) March 29, 2018 Provider of Military and Commercial Shelters and Systems
<br> LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 9.02%, Secured Debt (Maturity—March 29, 2023)(9) 29,097 28,659 29,097

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
HW Temps LLC July 2, 2015 Temporary Staffing Solutions 8.00% Secured Debt (Maturity—March 29, 2023) 10,181 10,025 8,913
Hydrofarm Holdings LLC(10) May 18, 2017 Wholesaler of Horticultural Products
<br> LIBOR Plus 10.00%, Current Coupon 3.54% / 8.26% PIK, Current Coupon Plus PIK 11.80% Secured Debt (Maturity—May 12,<br>2022)(19) 7,660 7,547 6,414
Hyperion Materials & Technologies, Inc.(11)(13) September 12, 2019 Manufacturer of Cutting and Machine Tools & Speciality Polishing Compounds
LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 7.25%, Secured Debt (Maturity—August 28, 2026)(9) 22,500 22,066 22,275
iEnergizer Limited(10)(13)(21) April 17, 2019 Provider of Business Outsourcing Solutions
<br> LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.79%, Secured Debt (Maturity—April 17, 2024)(9) 12,963 12,848 12,962
Implus Footcare, LLC(10) June 1, 2017 Provider of Footwear and Related Accessories
LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 8.27%, Secured Debt (Maturity—April 30, 2024)(9) 18,577 18,178 18,217
Independent Pet Partners Intermediate Holdings, LLC(10) November 20, 2018 Omnichannel Retailer of Specialty Pet Products
<br> LIBOR Plus 9.00% (Floor 1.00%), Current Coupon 11.28%, Secured Debt (Maturity—November 19, 2023)(9) 18,799 18,487 18,799
<br> Member Units (1,558,333 units) 1,558 1,260
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 20,045 20,059
Industrial Services Acquisition, LLC(10) June 17, 2016 Industrial Cleaning Services
6% Current / 7% PIK Unsecured Debt (Maturity—December 17, 2022)(19) 5,242 5,174 5,242
Preferred Member Units (Industrial Services Investments, LLC) (144 units; 10% cumulative)(8)(19) 103 103
Preferred Member Units (Industrial Services Investments, LLC) (80 units; 20% cumulative)(8)(19) 60 60
Member Units (Industrial Services Investments, LLC) (900 units) 900 510
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
6,237 5,915
Inn of the Mountain Gods Resort and Casino(11) October 30, 2013 Hotel & Casino Owner & Operator
<br> 9.25% Secured Debt (Maturity—November 30, 2020) 7,762 7,584 7,684
Interface Security Systems, L.L.C(10) August 7, 2019 Commercial Security & Alarm Services
LIBOR Plus 7.00% (Floor 1.75%), Current Coupon 8.77%, Secured Debt (Maturity—August 7, 2023)(9) 7,500 7,363 7,363
Intermedia Holdings, Inc.(11) August 3, 2018 Unified Communications as a Service LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.75%, Secured Debt (Maturity—July 19, 2025)(9) 20,130 20,033 20,180

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Invincible Boat Company, LLC.(10) August 28, 2019 Manufacturer of Sport Fishing Boats
LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 8.53%, Secured Debt (Maturity—August 28, 2025)(9) 9,872 9,773 9,773
Isagenix International, LLC(11) June 21, 2018 Direct Marketer of Health & Wellness Products
<br> LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 7.77%, Secured Debt (Maturity—June 14, 2025)(9) 5,943 5,893 4,273
JAB Wireless, Inc.(10) May 2, 2018 Fixed Wireless Broadband Provider
LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 9.74%, Secured Debt (Maturity—May 2, 2023)(9) 14,775 14,669 14,775
Jackmont Hospitality, Inc.(10) May 26, 2015 Franchisee of Casual Dining Restaurants
<br> LIBOR Plus 6.75% (Floor 1.00%), Current Coupon 8.45%, Secured Debt (Maturity—May 26, 2021)(9) 4,059 4,055 4,059
Joerns Healthcare, LLC(11) April 3, 2013 Manufacturer and Distributor of Health Care Equipment & Supplies
LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.91% Secured Debt (Maturity—August 21, 2024)(9) 4,016 3,942 3,942
Common Stock (472,579 shares) 4,429 4,429
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
8,371 8,371
Kemp Technologies Inc.(10) June 27, 2019 Provider of Application Delivery Controllers
<br> LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—March 29, 2024)(9) 7,462 7,326 7,463
Kore Wireless Group Inc.(11) December 31, 2018 Mission Critical Software Platform
LIBOR Plus 5.50%, Current Coupon 7.52%, Secured Debt (Maturity—December 20, 2024) 19,285 19,189 19,164
Larchmont Resources, LLC(11) August 13, 2013 Oil & Gas Exploration & Production
<br> LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.89%, Secured Debt (Maturity—August 7, 2020)(9) 2,145 2,145 1,990
<br> Member Units (Larchmont Intermediate Holdco, LLC) (2,828 units) 353 707
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 2,498 2,697
Laredo Energy VI, LP(10) January 15, 2019 Oil & Gas Exploration & Production
LIBOR Plus 9.63% (Floor 2.00%), Current Coupon 5.38% / 6.26% PIK, Current Coupon Plus PIK 11.64%, Secured Debt<br>(Maturity—November 19, 2021)(9)(19) 11,312 11,166 10,638
Lightbox Holdings, L.P.(11) May 23, 2019 Provider of Commercial Real Estate Software LIBOR Plus 5.00%, Current Coupon 6.74%, Secured Debt (Maturity—May 9, 2026) 14,925 14,713 14,738
LKCM Headwater Investments I, L.P.(12)(13) January 25, 2013 Investment Partnership
LP Interests (Fully diluted 2.3%)(8) 1,746 3,682

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
LL Management, Inc.(10) May 2, 2019 Medical Transportation Service Provider
<br> LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 8.56%, Secured Debt (Maturity—September 25, 2023)(9) 13,754 13,625 13,751
Logix Acquisition Company, LLC(10) June 24, 2016 Competitive Local Exchange Carrier
LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—December 22, 2024)(9) 18,381 18,199 18,197
Looking Glass Investments, LLC(12)(13) July 1, 2015 Specialty Consumer Finance
<br> Member Units (2.5 units) 125 25
<br> Member Units (LGI Predictive Analytics LLC) (190,712 units) 49 16
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 174 41
LSF9 Atlantis Holdings, LLC(11) May 17, 2017 Provider of Wireless Telecommunications Carrier Services
LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.74%, Secured Debt (Maturity—May 1, 2023)(9) 9,458 9,458 8,761
Lulu's Fashion Lounge, LLC(10) August 31, 2017 Fast Fashion E-Commerce Retailer
<br> LIBOR Plus 9.00% (Floor 1.00%), Current Coupon 10.75%, Secured Debt (Maturity—August 28, 2022)(9) 11,335 11,070 11,109
Lynx FBO Operating LLC(10) September 30, 2019 Fixed Based Operator in the General Aviation Industry
LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 7.86%, Secured Debt (Maturity—September 30, 2024)(9) 13,750 13,451 13,451
Member Units (3,704 units) 500 500
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
13,951 13,951
Mac Lean-Fogg Company(10) April 22, 2019 Manufacturer and Supplier for Auto and Power Markets
<br> LIBOR Plus 5.00%, Current Coupon 6.75%, Secured Debt (Maturity—December 22, 2025) 16,648 16,528 16,643
<br> Preferred Stock (1,516 shares; 4.50% Cash / 9.25% PIK cumulative)(8)(19) 1,775 1,775
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 18,303 18,418
MHVC Acquisition Corp.(11) May 8, 2017 Provider of differentiated information solutions, systems engineering, and analytics LIBOR Plus 5.25% (Floor 1.00%), Current Coupon 7.01%, Secured Debt (Maturity—April 29, 2024)(9) 19,950 19,855 19,950
Mills Fleet Farm Group, LLC(10) October 24, 2018 Omnichannel Retailer of Work, Farm and Lifestyle Merchandise
<br> LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 8.29% / 0.75% PIK, Current Coupon Plus PIK 9.04%, Secured Debt<br>(Maturity—October 24, 2024)(9)(19) 14,879 14,556 14,187

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
NBG Acquisition Inc(11) April 28, 2017 Wholesaler of Home Décor Products
LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 7.52%, Secured Debt (Maturity—April 26, 2024)(9) 4,181 4,134 3,247
NinjaTrader, LLC(10) December 18, 2019 Operator of Futures Trading Platform
<br> LIBOR Plus 6.00% (Floor 1.50%), Current Coupon 7.90%, Secured Debt (Maturity—December 18, 2024)(9) 9,675 9,490 9,490
NNE Partners, LLC(10) March 2, 2017 Oil & Gas Exploration & Production
LIBOR Plus 8.00%, Current Coupon 9.91%, Secured Debt (Maturity—March 2, 2022) 23,417 23,268 23,147
North American Lifting Holdings, Inc.(11) February 26, 2015 Crane Service Provider
<br> LIBOR Plus 4.50% (Floor 1.00%), Current Coupon 6.52%, Secured Debt (Maturity—November 27, 2020)(9) 7,584 7,300 6,417
Novetta Solutions, LLC(11) June 21, 2017 Provider of Advanced Analytics Solutions for Defense Agencies
LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.76%, Secured Debt (Maturity—October 17, 2022)(9) 21,060 20,673 20,749
NTM Acquisition Corp.(11) July 12, 2016 Provider of B2B Travel Information Content
<br> LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—June 7, 2022)(9) 4,879 4,874 4,879
Ospemifene Royalty Sub LLC (QuatRx)(10) July 8, 2013 Estrogen-Deficiency Drug Manufacturer and Distributor
11.5% Secured Debt (Maturity—November 15, 2026)(14) 4,868 4,868 463
PaySimple, Inc.(10) September 9, 2019 Leading technology services commerce platform
<br> LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 7.28%, Secured Debt (Maturity—August 23, 2025)(9) 15,845 15,586 15,766
Permian Holdco 2, Inc.(11) February 12, 2013 Storage Tank Manufacturer
14.00% PIK Unsecured Debt (Maturity—October 15, 2021)(19) 456 456 341
18.00% PIK Unsecured Debt (Maturity—June 30, 2022)(19) 319 319 319
Preferred Stock (Permian Holdco 1, Inc.) (154,558 units) 799 100
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
1,574 760
Point.360(10) July 8, 2015 Fully Integrated Provider of Digital Media Services
<br> Warrants (65,463 equivalent shares; Expiration—July 7, 2020; Strike price—0.75 per share) 69 —
<br> Common Stock (163,658 shares) 273 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 342 —

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
PricewaterhouseCoopers Public Sector LLP(11) May 24, 2018 Provider of Consulting Services to Governments
LIBOR Plus 8.00%, Current Coupon 9.75%, Secured Debt (Maturity—May 1, 2026) 9,000 8,965 8,865
PT Network, LLC(10) November 1, 2013 Provider of Outpatient Physical Therapy and Sports Medicine Services
<br> LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 7.44% / 2.00% PIK, Current Coupon Plus PIK 9.44%, Secured Debt<br>(Maturity—November 30, 2023)(9)(19) 8,491 8,491 8,414
Research Now Group, Inc. and Survey Sampling International, LLC(11) December 31, 2017 Provider of Outsourced Online Surveying
LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 7.41%, Secured Debt (Maturity—December 20, 2024)(9) 18,115 17,590 18,140
RM Bidder, LLC(10) November 12, 2015 Scripted and Unscripted TV and Digital Programming Provider
<br> Warrants (327,532 equivalent units; Expiration—October 20, 2025; Strike price—14.28 per unit) 425 —
<br> Member Units (2,779 units) 46 18
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 471 18
SAFETY Investment Holdings, LLC April 29, 2016 Provider of Intelligent Driver Record Monitoring Software and Services
Member Units (2,000,000 units) 2,000 2,380
Salient Partners L.P.(11) June 25, 2015 Provider of Asset Management Services
<br> LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.69%, Secured Debt (Maturity—June 9, 2021)(9) 6,675 6,657 6,675
SMART Modular Technologies, Inc.(10)(13) August 18, 2017 Provider of Specialty Memory Solutions
LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 8.16%, Secured Debt (Maturity—August 9, 2022)(9) 18,484 18,332 18,669
Staples Canada ULC(10)(13)(21) September 14, 2017 Office Supplies Retailer LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.98%, Secured Debt (Maturity—September 12, 2024)(9)(22) 14,546 14,348 13,530
TE Holdings, LLC(11) December 5, 2013 Oil & Gas Exploration & Production
Member Units (97,048 units) 970 —
TEAM Public Choices, LLC(10) October 28, 2019 Home-Based Care Employment Service Provider
<br> LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.75%, Secured Debt (Maturity—September 20, 2024)(9) 16,844 16,680 16,680
Tectonic Financial, Inc. May 15, 2017 Financial Services Organization
Common Stock (400,000 shares)(8) 2,000 2,620

All values are in US Dollars.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
TGP Holdings III LLC(11) September 30, 2017 Outdoor Cooking & Accessories
<br> LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 10.25%, Secured Debt (Maturity—September 25, 2025)(9) 5,500 5,440 5,143
The Pasha Group(11) February 2, 2018 Diversified Logistics and Transportation Provided
LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 9.31%, Secured Debt (Maturity—January 26, 2023)(9) 8,984 8,793 9,074
TMC Merger Sub Corp.(11) December 22, 2016 Refractory & Maintenance Services Provider
<br> LIBOR Plus 6.75% (Floor 1.00%), Current Coupon 8.53%, Secured Debt (Maturity—October 31, 2022)(9)(24) 15,527 15,394 15,392
TOMS Shoes, LLC(11) November 13, 2014 Global Designer, Distributor, and Retailer of Casual Footwear
LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 7.46%, Secured Debt (Maturity—September 30, 2025)(9) 571 571 571
LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.96%, Secured Debt (Maturity—December 31, 2025)(9) 1,637 1,637 1,637
Member Units (16,321 units) 245 245
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
2,453 2,453
USA DeBusk LLC(10) October 22, 2019 Provider of Industrial Cleaning Services
<br> LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 7.54%, Secured Debt (Maturity—October 22, 2024)(9) 30,000 29,423 29,423
U.S. TelePacific Corp.(11) September 14, 2016 Provider of Communications and Managed Services
LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 7.02%, Secured Debt (Maturity—May 2, 2023)(9) 17,088 16,887 16,447
Vida Capital, Inc(11) October 10, 2019 Alternative Asset Manager LIBOR Plus 6.00%, Current Coupon 7.93%, Secured Debt (Maturity—October 1, 2026) 18,500 18,232 18,315
VIP Cinema Holdings, Inc.(11) March 9, 2017 Supplier of Luxury Seating to the Cinema Industry
LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 9.91%, Secured Debt (Maturity—March 1, 2023)(9)(14) 10,063 10,030 5,301
Vistar Media, Inc.(10) February 17, 2017 Operator of Digital Out-of-Home Advertising Platform
<br> LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 10.00%, Secured Debt (Maturity—April 3, 2023)(9) 4,963 4,784 4,939
<br> Preferred Stock (70,207 shares) 767 1,610
<br> Warrants (69,675 equivalent shares; Expiration—April 3, 2029; Strike price—10.92 per share) — 1,630
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
<br> 5,551 8,179

All values are in US Dollars.

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MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

Portfolio Company(1)(20) Investment Date(26) Business Description Type of Investment(2)(3)(25) Principal(4) Cost(4) Fair Value(18)
Wireless Vision Holdings, LLC(10) September 29, 2017 Provider of Wireless Telecommunications Carrier Services
LIBOR Plus 9.65% (Floor 1.00%), Current Coupon 11.57% / 1.00% PIK, Current Coupon Plus PIK 12.57%, Secured Debt<br>(Maturity—September 29, 2022)(9)(19)(23) 7,136 7,022 7,129
LIBOR Plus 8.91% (Floor 1.00%), Current Coupon 10.67% / 1.00% PIK, Current Coupon Plus PIK 11.67%, Secured Debt<br>(Maturity—September 29, 2022)(9)(19)(23) 6,201 6,132 6,200
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
13,154 13,329
YS Garments, LLC(11) August 22, 2018 Designer and Provider of Branded Activewear
<br> LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.60% Secured Debt (Maturity—August 9, 2024)(9) 14,531 14,412 14,404
Zilliant Incorporated June 15, 2012 Price Optimization and Margin Management Solutions
Preferred Stock (186,777 shares) 154 260
Warrants (952,500 equivalent shares; Expiration—June 15, 2022; Strike price—0.001 per share) 1,071 1,190
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
1,225 1,450
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Subtotal Non-Control/Non-Affiliate Investments (80.7% of net assets at fair value) $ 1,297,587 $ 1,239,316
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total Portfolio Investments, December 31, 2019 $ 2,427,718 $ 2,602,324
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

All values are in US Dollars.

  • (1)
    • All investments are Lower Middle Market portfolio investments, unless otherwise noted. See Note B for a description of Lower Middle Market portfolio investments. All of the Company's investments, unless otherwise noted, are encumbered either as security for the Company's Credit Facility or in support of the SBA-guaranteed debentures issued by the Funds.
  • (2)
    • Debt investments are income producing, unless otherwise noted. Equity and warrants are non-income producing, unless otherwise noted.
  • (3)
    • See Note C and Schedule 12-14 for a summary of geographic location of portfolio companies.
  • (4)
    • Principal is net of repayments. Cost is net of repayments and accumulated unearned income.
  • (5)
    • Control investments are defined by the Investment Company Act of 1940, as amended ("1940 Act"), as investments in which more than 25% of the voting securities are owned or where the ability to nominate greater than 50% of the board representation is maintained.
  • (6)
    • Affiliate investments are defined by the 1940 Act as investments in which between 5% and 25% (inclusive) of the voting securities are owned and the investments are not classified as Control investments.
  • (7)
    • Non-Control/Non-Affiliate investments are defined by the 1940 Act as investments that are neither Control investments nor Affiliate investments.
  • (8)
    • Income producing through dividends or distributions.
  • (9)
    • Index based floating interest rate is subject to contractual minimum interest rate. A majority of the variable rate loans in the Company's investment portfolio bear interest at a rate that may be determined by reference to either LIBOR or an alternate Base Rate (commonly based on the Federal Funds Rate or the Prime Rate), which typically resets semi-annually, quarterly, or monthly at the borrower's option. The borrower may also elect to have multiple interest reset periods for each loan. For each such loan, the Company has provided the weighted average annual stated interest rate in effect at December 31, 2019. As noted in this schedule, 64% of the loans (based on the par amount) contain LIBOR floors which range between 0.50% and 2.00%, with a weighted-average LIBOR floor of approximately 1.06%.
  • (10)
    • Private Loan portfolio investment. See Note B for a description of Private Loan portfolio investments.
  • (11)
    • Middle Market portfolio investment. See Note B for a description of Middle Market portfolio investments.
  • (12)
    • Other Portfolio investment. See Note B for a description of Other Portfolio investments.
  • (13)
    • Investment is not a qualifying asset as defined under Section 55(a) of the 1940 Act. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets.
  • (14)
    • Non-accrual and non-income producing investment.
  • (15)
    • Portfolio company is in a bankruptcy process and, as such, the maturity date of our debt investment in this portfolio company will not be finally determined until such process is complete. As noted in footnote (14), our debt investment in this portfolio company is on non-accrual status.
  • (16)
    • External Investment Manager. Investment is not encumbered as security for the Company's Credit Facility or in support of the SBA-guaranteed debentures issued by the Funds.

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MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments (Continued)

December 31, 2019

(dollars in thousands)

  • (17)
    • Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable.
  • (18)
    • Investment fair value was determined using significant unobservable inputs, unless otherwise noted. See Note C for further discussion.
  • (19)
    • PIK interest income and cumulative dividend income represent income not paid currently in cash.
  • (20)
    • All portfolio company headquarters are based in the United States, unless otherwise noted.
  • (21)
    • Portfolio company headquarters are located outside of the United States.
  • (22)
    • In connection with the Company's debt investment in Staples Canada ULC and in an attempt to mitigate any potential adverse change in foreign exchange rates during the term of the Company's investment, the Company maintains a forward foreign currency contract with Cadence Bank to lend $17.6 million Canadian Dollars and receive $13.4 million U.S. Dollars with a settlement date of September 14, 2020. The unrealized depreciation on the forward foreign currency contract is $0.2 million as of December 31,
  • (23)
    • The Company has entered into an intercreditor agreement that entitles the Company to the "last out" tranche of the first lien secured loans, whereby the "first out" tranche will receive priority as to the "last out" tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of LIBOR plus 8.50% (Floor 1.00%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate.
  • (24)
    • The Company has entered into an intercreditor agreement that entitles the Company to the "first out" tranche of the first lien secured loans, whereby the "first out" tranche will receive priority as to the "last out" tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a lower interest rate than the contractual stated interest rate of LIBOR plus 7.14% (Floor 1.00%) per the credit agreement and the Consolidated Schedule of Investments above reflects such lower rate.
  • (25)
    • All of the Company's portfolio investments are generally subject to restrictions on resale as "restricted securities."
  • (26)
    • Investment date represents the date of initial investment in the portfolio company.
  • (27)
    • Investment has an unfunded commitment as of December 31, 2019 (see Note K). The fair value of the investment includes the impact of the fair value of any unfunded commitments.

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MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements

(Unaudited)

NOTE A—ORGANIZATION AND BASIS OF PRESENTATION

1.     Organization

Main Street Capital Corporation ("MSCC") is a principal investment firm primarily focused on providing customized debt and equity financing to lower middle market ("LMM") companies and debt capital to middle market ("Middle Market") companies. The portfolio investments of MSCC and its consolidated subsidiaries are typically made to support management buyouts, recapitalizations, growth financings, refinancings and acquisitions of companies that operate in a variety of industry sectors. MSCC seeks to partner with entrepreneurs, business owners and management teams and generally provides "one stop" financing alternatives within its LMM portfolio. MSCC and its consolidated subsidiaries invest primarily in secured debt investments, equity investments, warrants and other securities of LMM companies based in the United States and in secured debt investments of Middle Market companies generally headquartered in the United States.

MSCC was formed in March 2007 to operate as an internally managed business development company ("BDC") under the Investment Company Act of 1940, as amended (the "1940 Act"). MSCC wholly owns several investment funds, including Main Street Mezzanine Fund, LP ("MSMF"), Main Street Capital II, LP ("MSC II") and Main Street Capital III, LP ("MSC III" and, collectively with MSMF and MSC II, the "Funds"), and each of their general partners. The Funds are each licensed as a Small Business Investment Company ("SBIC") by the United States Small Business Administration ("SBA"). Because MSCC is internally managed, all of the executive officers and other employees are employed by MSCC. Therefore, MSCC does not pay any external investment advisory fees, but instead directly incurs the operating costs associated with employing investment and portfolio management professionals.

MSC Adviser I, LLC (the "External Investment Manager") was formed in November 2013 as a wholly owned subsidiary of MSCC to provide investment management and other services to parties other than MSCC and its subsidiaries or their portfolio companies ("External Parties") and receives fee income for such services. MSCC has been granted no-action relief by the Securities and Exchange Commission ("SEC") to allow the External Investment Manager to register as a registered investment adviser under the Investment Advisers Act of 1940, as amended. Since the External Investment Manager conducts all of its investment management activities for External Parties, it is accounted for as a portfolio investment of MSCC and is not included as a consolidated subsidiary of MSCC in MSCC's consolidated financial statements.

MSCC has elected to be treated for U.S. federal income tax purposes as a regulated investment company ("RIC") under Subchapter M of the Internal Revenue Code of 1986, as amended (the "Code"). As a result, MSCC generally will not pay corporate-level U.S. federal income taxes on any net ordinary taxable income or capital gains that it distributes to its stockholders.

MSCC has certain direct and indirect wholly owned subsidiaries that have elected to be taxable entities (the "Taxable Subsidiaries"). The primary purpose of the Taxable Subsidiaries is to permit MSCC to hold equity investments in portfolio companies which are "pass-through" entities for tax purposes.

Unless otherwise noted or the context otherwise indicates, the terms "we," "us," "our," the "Company" and "Main Street" refer to MSCC and its consolidated subsidiaries, which include the Funds and the Taxable Subsidiaries.

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MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

2.     Basis of Presentation

Main Street's consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP"). The Company is an investment company following accounting and reporting guidance in Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") 946, FinancialServices—Investment Companies ("ASC 946"). For each of the periods presented herein, Main Street's consolidated financial statements include the accounts of MSCC and its consolidated subsidiaries. The Investment Portfolio, as used herein, refers to all of Main Street's investments in LMM portfolio companies, investments in Middle Market portfolio companies, private loan ("Private Loan") portfolio investments, other portfolio ("Other Portfolio") investments and the investment in the External Investment Manager (see "Note C—Fair Value Hierarchy for Investments and Debentures—Portfolio Composition—Investment Portfolio Composition" for additional discussion of Main Street's Investment Portfolio). Main Street's results of operations for the three and six months ended June 30, 2020 and 2019, cash flows for the six months ended June 30, 2020 and 2019, and financial position as of June 30, 2020 and December 31, 2019, are presented on a consolidated basis. The effects of all intercompany transactions between Main Street and its consolidated subsidiaries have been eliminated in consolidation.

The accompanying unaudited consolidated financial statements of Main Street are presented in conformity with U.S. GAAP for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Articles 6, 10 and 12 of Regulation S-X. Accordingly, certain disclosures accompanying annual financial statements prepared in accordance with U.S. GAAP are omitted. In the opinion of management, the unaudited consolidated financial results included herein contain all adjustments, consisting solely of normal recurring accruals, considered necessary for the fair presentation of financial statements for the interim periods included herein. The results of operations for the three and six months ended June 30, 2020 and 2019 are not necessarily indicative of the operating results to be expected for the full year. Also, the unaudited financial statements and notes should be read in conjunction with the audited financial statements and notes thereto for the year ended December 31, 2019. Financial statements prepared on a U.S. GAAP basis require management to make estimates and assumptions that affect the amounts and disclosures reported in the financial statements and accompanying notes. Such estimates and assumptions could change in the future as more information becomes known, which could impact the amounts reported and disclosed herein.

Under ASC 946, Main Street is precluded from consolidating other entities in which Main Street has equity investments, including those in which it has a controlling interest, unless the other entity is another investment company. An exception to this general principle in ASC 946 occurs if Main Street holds a controlling interest in an operating company that provides all or substantially all of its services directly to Main Street or to its portfolio companies. Accordingly, as noted above, MSCC's consolidated financial statements include the financial position and operating results for the Funds and the Taxable Subsidiaries. Main Street has determined that none of its portfolio investments qualify for this exception, including the investment in the External Investment Manager. Therefore, Main Street's Investment Portfolio is carried on the consolidated balance sheet at fair value, as discussed further in Note B.1., with any adjustments to fair value recognized as "Net Unrealized Appreciation (Depreciation)" on the consolidated statements of operations until the investment is realized, usually upon exit, resulting in any gain or loss being recognized as a "Net Realized Gain (Loss)."

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MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

***Portfolio Investment Classification***

Main Street classifies its Investment Portfolio in accordance with the requirements of the 1940 Act. Under the 1940 Act, (a) "Control Investments" are defined as investments in which Main Street owns more than 25% of the voting securities or has rights to maintain greater than 50% of the board representation, (b) "Affiliate Investments" are defined as investments in which Main Street owns between 5% and 25% (inclusive) of the voting securities and does not have rights to maintain greater than 50% of the board representation, and (c) "Non-Control/Non-Affiliate Investments" are defined as investments that are neither Control Investments nor Affiliate Investments.

NOTE B—SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

1.     Valuation of the Investment Portfolio

Main Street accounts for its Investment Portfolio at fair value. As a result, Main Street follows the provisions of ASC 820, Fair ValueMeasurements and Disclosures ("ASC 820"). ASC 820 defines fair value, establishes a framework for measuring fair value, establishes a fair value hierarchy based on the quality of inputs used to measure fair value and enhances disclosure requirements for fair value measurements. ASC 820 requires Main Street to assume that the portfolio investment is to be sold in the principal market to independent market participants, which may be a hypothetical market. Market participants are defined as buyers and sellers in the principal market that are independent, knowledgeable and willing and able to transact.

Main Street's portfolio strategy calls for it to invest primarily in illiquid debt and equity securities issued by privately held, LMM companies and more liquid debt securities issued by Middle Market companies that are generally larger in size than the LMM companies. Main Street categorizes some of its investments in LMM companies and Middle Market companies as Private Loan portfolio investments, which are primarily debt securities in privately held companies that have been originated through strategic relationships with other investment funds on a collaborative basis, and are often referred to in the debt markets as "club deals." Private Loan investments are typically similar in size, structure, terms and conditions to investments Main Street holds in its LMM portfolio and Middle Market portfolio. Main Street's portfolio also includes Other Portfolio investments which primarily consist of investments that are not consistent with the typical profiles for its LMM portfolio investments, Middle Market portfolio investments or Private Loan portfolio investments, including investments which may be managed by third parties. Main Street's portfolio investments may be subject to restrictions on resale.

LMM investments and Other Portfolio investments generally have no established trading market while Middle Market securities generally have established markets that are not active. Private Loan investments may include investments which have no established trading market or have established markets that are not active. Main Street determines in good faith the fair value of its Investment Portfolio pursuant to a valuation policy in accordance with ASC 820 and a valuation process approved by its Board of Directors and in accordance with the 1940 Act. Main Street's valuation policies and processes are intended to provide a consistent basis for determining the fair value of Main Street's Investment Portfolio.

For LMM portfolio investments, Main Street generally reviews external events, including private mergers, sales and acquisitions involving comparable companies, and includes these events in the valuation process by using an enterprise value waterfall methodology ("Waterfall") for its LMM equity

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MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

investments and an income approach using a yield-to-maturity model ("Yield-to-Maturity") for its LMM debt investments. For Middle Market portfolio investments, Main Street primarily uses quoted prices in the valuation process. Main Street determines the appropriateness of the use of third-party broker quotes, if any, in determining fair value based on its understanding of the level of actual transactions used by the broker to develop the quote and whether the quote was an indicative price or binding offer, the depth and consistency of broker quotes and the correlation of changes in broker quotes with underlying performance of the portfolio company and other market indices. For Middle Market and Private Loan portfolio investments in debt securities for which it has determined that third-party quotes or other independent pricing are not available or appropriate, Main Street generally estimates the fair value based on the assumptions that it believes hypothetical market participants would use to value the investment in a current hypothetical sale using the Yield-to-Maturity valuation method. For its Other Portfolio equity investments, Main Street generally calculates the fair value of the investment primarily based on the net asset value ("NAV") of the fund and adjusts the fair value for other factors deemed relevant that would affect the fair value of the investment. All of the valuation approaches for Main Street's portfolio investments estimate the value of the investment as if Main Street were to sell, or exit, the investment as of the measurement date.

These valuation approaches consider the value associated with Main Street's ability to control the capital structure of the portfolio company, as well as the timing of a potential exit. For valuation purposes, "control" portfolio investments are composed of debt and equity securities in companies for which Main Street has a controlling interest in the equity ownership of the portfolio company or the ability to nominate a majority of the portfolio company's board of directors. For valuation purposes, "non-control" portfolio investments are generally composed of debt and equity securities in companies for which Main Street does not have a controlling interest in the equity ownership of the portfolio company or the ability to nominate a majority of the portfolio company's board of directors.

Under the Waterfall valuation method, Main Street estimates the enterprise value of a portfolio company using a combination of market and income approaches or other appropriate valuation methods, such as considering recent transactions in the equity securities of the portfolio company or third-party valuations of the portfolio company, and then performs a waterfall calculation by allocating the enterprise value over the portfolio company's securities in order of their preference relative to one another. The enterprise value is the fair value at which an enterprise could be sold in a transaction between two willing parties, other than through a forced or liquidation sale. Typically, privately held companies are bought and sold based on multiples of earnings before interest, taxes, depreciation and amortization ("EBITDA"), cash flows, net income, revenues, or in limited cases, book value. There is no single methodology for estimating enterprise value. For any one portfolio company, enterprise value is generally described as a range of values from which a single estimate of enterprise value is derived. In estimating the enterprise value of a portfolio company, Main Street analyzes various factors including the portfolio company's historical and projected financial results. Due to SEC deadlines for Main Street's quarterly and annual financial reporting, the operating results of a portfolio company used in the current period valuation are generally the results from the period ended three months prior to such valuation date and may include unaudited, projected, budgeted or pro forma financial information and may require adjustments for non-recurring items or to normalize the operating results that may require significant judgment in determining. In addition, projecting future financial results requires significant judgment regarding future growth assumptions. In evaluating the operating results, Main Street also analyzes the impact of exposure to litigation, loss of customers or other contingencies. After determining the appropriate enterprise value, Main Street allocates the enterprise value to

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MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

investments in order of the legal priority of the various components of the portfolio company's capital structure. In applying the Waterfall valuation method, Main Street assumes the loans are paid off at the principal amount in a change in control transaction and are not assumed by the buyer, which Main Street believes is consistent with its past transaction history and standard industry practices.

Under the Yield-to-Maturity valuation method, Main Street also uses the income approach to determine the fair value of debt securities based on projections of the discounted future free cash flows that the debt security will likely generate, including analyzing the discounted cash flows of interest and principal amounts for the debt security, as set forth in the associated loan agreements, as well as the financial position and credit risk of the portfolio company. Main Street's estimate of the expected repayment date of its debt securities is generally the maturity date of the instrument, as Main Street generally intends to hold its loans and debt securities to maturity. The Yield-to-Maturity analysis also considers changes in leverage levels, credit quality, portfolio company performance and other factors. Main Street will generally use the value determined by the Yield-to-Maturity analysis as the fair value for that security; however, because of Main Street's general intent to hold its loans to maturity, the fair value will not exceed the principal amount of the debt security valued using the Yield-to-Maturity valuation method. A change in the assumptions that Main Street uses to estimate the fair value of its debt securities using the Yield-to-Maturity valuation method could have a material impact on the determination of fair value. If there is deterioration in credit quality or if a debt security is in workout status, Main Street may consider other factors in determining the fair value of the debt security, including the value attributable to the debt security from the enterprise value of the portfolio company or the proceeds that would most likely be received in a liquidation analysis.

Under the NAV valuation method, for an investment in an investment fund that does not have a readily determinable fair value, Main Street measures the fair value of the investment predominately based on the NAV of the investment fund as of the measurement date and adjusts the investment's fair value for factors known to Main Street that would affect that fund's NAV, including, but not limited to, fair values for individual investments held by the fund if Main Street holds the same investment or for a publicly traded investment. In addition, in determining the fair value of the investment, Main Street considers whether adjustments to the NAV are necessary in certain circumstances, based on the analysis of any restrictions on redemption of Main Street's investment as of the measurement date, recent actual sales or redemptions of interests in the investment fund, and expected future cash flows available to equity holders, including the rate of return on those cash flows compared to an implied market return on equity required by market participants, or other uncertainties surrounding Main Street's ability to realize the full NAV of its interests in the investment fund.

Pursuant to its internal valuation process and the requirements under the 1940 Act, Main Street performs valuation procedures on each of its portfolio investments quarterly. In addition to its internal valuation process, in arriving at estimates of fair value for its investments in its LMM portfolio companies, Main Street, among other things, consults with a nationally recognized independent financial advisory services firm. The nationally recognized independent financial advisory services firm analyzes and provides observations, recommendations and an assurance certification regarding the Company's determinations of the fair value of its LMM portfolio company investments. The nationally recognized independent financial advisory services firm is generally consulted relative to Main Street's investments in each LMM portfolio company at least once every calendar year, and for Main Street's investments in new LMM portfolio companies, at least once in the twelve-month period subsequent to the initial investment. In certain instances, Main Street may determine that it is not cost-effective, and as a result is not in its stockholders' best interest, to consult with the nationally recognized independent

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MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

financial advisory services firm on its investments in one or more LMM portfolio companies. Such instances include, but are not limited to, situations where the fair value of Main Street's investment in a LMM portfolio company is determined to be insignificant relative to the total Investment Portfolio. Main Street consulted with and received an assurance certification from its independent financial advisory services firm in arriving at Main Street's determination of fair value on its investments in a total of 28 LMM portfolio companies for the six months ended June 30, 2020, representing approximately 47% of the total LMM portfolio at fair value as of June 30, 2020, and on a total of 25 LMM portfolio companies for the six months ended June 30, 2019, representing approximately 40% of the total LMM portfolio at fair value as of June 30, 2019. Excluding its investments in LMM portfolio companies that, as of June 30, 2020 and 2019, as applicable, had not been in the Investment Portfolio for at least twelve months subsequent to the initial investment or whose primary purpose is to own real estate for which a third-party appraisal is obtained on at least an annual basis, the percentage of the LMM portfolio reviewed and certified by its independent financial advisory services firm for the six months ended June 30, 2020 and 2019 was 53% and 42% of the total LMM portfolio at fair value as of June 30, 2020 and 2019, respectively.

For valuation purposes, all of Main Street's Middle Market portfolio investments are non-control investments. To the extent sufficient observable inputs are available to determine fair value, Main Street uses observable inputs to determine the fair value of these investments through obtaining third-party quotes or other independent pricing. For Middle Market portfolio investments for which it has determined that third-party quotes or other independent pricing are not available or appropriate, Main Street generally estimates the fair value based on the assumptions that it believes hypothetical market participants would use to value such Middle Market debt investments in a current hypothetical sale using the Yield-to-Maturity valuation method and such Middle Market equity investments in a current hypothetical sale using the Waterfall valuation method. Because the vast majority of the Middle Market portfolio investments are typically valued using third-party quotes or other independent pricing services (including 92% and 91% of the Middle Market portfolio investments as of June 30, 2020 and December 31, 2019, respectively), Main Street generally does not consult with any financial advisory services firms in connection with determining the fair value of its Middle Market investments.

For valuation purposes, all of Main Street's Private Loan portfolio investments are non-control investments. For Private Loan portfolio investments for which it has determined that third-party quotes or other independent pricing are not available or appropriate, Main Street generally estimates the fair value based on the assumptions that it believes hypothetical market participants would use to value such Private Loan debt investments in a current hypothetical sale using the Yield-to-Maturity valuation method and such Private Loan equity investments in a current hypothetical sale using the Waterfall valuation method.

In addition to its internal valuation process, in arriving at estimates of fair value for its investments in its Private Loan portfolio companies, Main Street, among other things, consults with a nationally recognized independent financial advisory services firm. The nationally recognized independent financial advisory services firm analyzes and provides observations and recommendations and an assurance certification regarding the Company's determinations of the fair value of its Private Loan portfolio company investments. The nationally recognized independent financial advisory services firm is generally consulted relative to Main Street's investments in each Private Loan portfolio company at least once every calendar year, and for Main Street's investments in new Private Loan portfolio companies, at least once in the twelve-month period subsequent to the initial investment. In certain instances, Main Street may determine that it is not cost-effective, and as a result is not in its

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MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

stockholders' best interest, to consult with the nationally recognized independent financial advisory services firm on its investments in one or more Private Loan portfolio companies. Such instances include, but are not limited to, situations where the fair value of Main Street's investment in a Private Loan portfolio company is determined to be insignificant relative to the total Investment Portfolio. Main Street consulted with and received an assurance certification from its independent financial advisory services firm in arriving at its determination of fair value on its investments in a total of 21 Private Loan portfolio companies for the six months ended June 30, 2020, representing approximately 37% of the total Private Loan portfolio at fair value as of June 30, 2020, and on a total of 18 Private Loan portfolio companies for the six months ended June 30, 2019, representing approximately 31% of the total Private Loan portfolio at fair value as of June 30, 2019. Excluding its investments in Private Loan portfolio companies that, as of June 30, 2020 and 2019, as applicable, had not been in the Investment Portfolio for at least twelve months subsequent to the initial investment and its investments in Private Loan portfolio companies that were not reviewed because the investment is valued based upon third-party quotes or other independent pricing, the percentage of the Private Loan portfolio reviewed and certified by its independent financial advisory services firm for the six months ended June 30, 2020 and 2019 was 45% and 48% of the total Private Loan portfolio at fair value as of June 30, 2020 and 2019, respectively.

For valuation purposes, all of Main Street's Other Portfolio investments are non-control investments. Main Street's Other Portfolio investments comprised 4.1% of Main Street's Investment Portfolio at fair value as of June 30, 2020 and December 31, 2019. Similar to the LMM investment portfolio, market quotations for Other Portfolio equity investments are generally not readily available. For its Other Portfolio equity investments, Main Street generally determines the fair value of these investments using the NAV valuation method.

For valuation purposes, Main Street's investment in the External Investment Manager is a control investment. Market quotations are not readily available for this investment, and as a result, Main Street determines the fair value of the External Investment Manager using the Waterfall valuation method under the market approach. In estimating the enterprise value, Main Street analyzes various factors, including the entity's historical and projected financial results, as well as its size, marketability and performance relative to the population of market comparables. This valuation approach estimates the value of the investment as if Main Street were to sell, or exit, the investment. In addition, Main Street considers its ability to control the capital structure of the company, as well as the timing of a potential exit, in connection with determining the fair value of the External Investment Manager.

Due to the inherent uncertainty in the valuation process, Main Street's determination of fair value for its Investment Portfolio may differ materially from the values that would have been determined had a ready market for the securities existed. In addition, changes in the market environment, portfolio company performance and other events that may occur over the lives of the investments may cause the gains or losses ultimately realized on these investments to be materially different than the valuations currently assigned. Main Street determines the fair value of each individual investment and records changes in fair value as unrealized appreciation or depreciation.

Main Street uses an internally developed portfolio investment rating system in connection with its investment oversight, portfolio management and analysis and investment valuation procedures for its LMM portfolio companies. This system takes into account both quantitative and qualitative factors of the LMM portfolio company and the investments held therein.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

The Board of Directors of Main Street has the final responsibility for overseeing, reviewing and approving, in good faith, Main Street's determination of the fair value for its Investment Portfolio, as well as its valuation procedures, consistent with 1940 Act requirements. Main Street believes its Investment Portfolio as of June 30, 2020 and December 31, 2019 approximates fair value as of those dates based on the markets in which Main Street operates and other conditions in existence on those reporting dates.

2.     Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the period. Actual results may differ from these estimates under different conditions or assumptions. Additionally, as explained in Note B.1., the consolidated financial statements include investments in the Investment Portfolio whose values have been estimated by Main Street with the oversight, review and approval by Main Street's Board of Directors in the absence of readily ascertainable market values. Because of the inherent uncertainty of the Investment Portfolio valuations, those estimated values may differ materially from the values that would have been determined had a ready market for the securities existed.

The COVID-19 pandemic, and the related effect on the U.S. and global economies, has impacted, and threatens to continue to impact, the businesses and operating results of certain of Main Street's portfolio companies, as well as market interest spreads. As a result of these and other current effects of the COVID-19 pandemic, as well as the uncertainty regarding the extent and duration of its impact, the valuation of Main Street's Investment Portfolio is volatile.

3.     Cash and Cash Equivalents

Cash and cash equivalents consist of cash and highly liquid investments with an original maturity of three months or less at the date of purchase. Cash and cash equivalents are carried at cost, which approximates fair value.

At June 30, 2020, cash balances totaling $65.4 million exceeded Federal Deposit Insurance Corporation insurance protection levels, subjecting the Company to risk related to the uninsured balance. All of the Company's cash deposits are held at large established high credit quality financial institutions and management believes that the risk of loss associated with any uninsured balances is remote.

4.     Interest, Dividend and Fee Income

Main Street records interest and dividend income on the accrual basis to the extent amounts are expected to be collected. Dividend income is recorded as dividends are declared by the portfolio company or at the point an obligation exists for the portfolio company to make a distribution. In accordance with Main Street's valuation policies, Main Street evaluates accrued interest and dividend income periodically for collectability. When a loan or debt security becomes 90 days or more past due, and if Main Street otherwise does not expect the debtor to be able to service all of its debt or other obligations, Main Street will generally place the loan or debt security on non-accrual status and cease recognizing interest income on that loan or debt security until the borrower has demonstrated the ability and intent to pay contractual amounts due. If a loan or debt security's status significantly

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(Unaudited)

improves regarding the debtor's ability to service the debt or other obligations, or if a loan or debt security is sold or written off, Main Street removes it from non-accrual status.

As of June 30, 2020, Main Street's total Investment Portfolio had eleven investments on non-accrual status, which comprised approximately 1.9% of its fair value and 6.3% of its cost. As of December 31, 2019, Main Street's total Investment Portfolio had eight investments on non-accrual status, which comprised approximately 1.4% of its fair value and 4.8% of its cost.

Main Street holds certain debt and preferred equity instruments in its Investment Portfolio that contain payment-in-kind ("PIK") interest and cumulative dividend provisions. The PIK interest, computed at the contractual rate specified in each debt agreement, is periodically added to the principal balance of the debt and is recorded as interest income. Thus, the actual collection of this interest may be deferred until the time of debt principal repayment. Cumulative dividends are recorded as dividend income, and any dividends in arrears are added to the balance of the preferred equity investment. The actual collection of these dividends in arrears may be deferred until such time as the preferred equity is redeemed or sold. To maintain RIC tax treatment (as discussed in Note B.9. below), these non-cash sources of income may need to be paid out to stockholders in the form of distributions, even though Main Street may not have collected the PIK interest and cumulative dividends in cash. Main Street stops accruing PIK interest and cumulative dividends and writes off any accrued and uncollected interest and dividends in arrears when it determines that such PIK interest and dividends in arrears are no longer collectible. For the three months ended June 30, 2020 and 2019, (i) approximately 2.5% and 2.2%, respectively, of Main Street's total investment income was attributable to PIK interest income not paid currently in cash and (ii) approximately 0.9% and 1.1%, respectively, of Main Street's total investment income was attributable to cumulative dividend income not paid currently in cash. For the six months ended June 30, 2020 and 2019, (i) approximately 1.7% and 2.0%, respectively, of Main Street's total investment income was attributable to PIK interest income not paid currently in cash and (ii) approximately 0.9% and 1.1%, respectively, of Main Street's total investment income was attributable to cumulative dividend income not paid currently in cash.

Main Street may periodically provide services, including structuring and advisory services, to its portfolio companies or other third parties. For services that are separately identifiable and evidence exists to substantiate fair value, fee income is recognized as earned, which is generally when the investment or other applicable transaction closes. Fees received in connection with debt financing transactions for services that do not meet these criteria are treated as debt origination fees and are deferred and accreted into income over the life of the financing.

A presentation of total investment income Main Street received from its Investment Portfolio in each of the periods presented is as follows:

Three Months EndedJune 30, Six Months EndedJune 30,
2020 2019 2020 2019
(dollars in thousands)
Interest, fee and dividend income:
Interest income $ 41,574 $ 47,222 $ 86,450 $ 94,541
Dividend income 7,795 12,763 15,836 25,259
Fee income 2,638 1,308 5,870 2,857
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total interest, fee and dividend income $ 52,007 $ 61,293 $ 108,156 $ 122,657
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

5.     Deferred Financing Costs

Deferred financing costs include commitment fees and other costs related to Main Street's multi-year revolving credit facility (the "Credit Facility") and its unsecured notes, as well as the commitment fees and leverage fees (approximately 3.4% of the total commitment and draw amounts, as applicable) on the SBIC debentures which are not accounted for under the fair value option under ASC 825 (as discussed further in Note B.11.). See further discussion of Main Street's debt in Note E. Deferred financing costs in connection with the Credit Facility are capitalized as an asset. Deferred financing costs in connection with all other debt arrangements not using the fair value option are a direct deduction from the related debt liability.

6.     Equity Offering Costs

The Company's offering costs are charged against the proceeds from equity offerings when the proceeds are received.

7.     Unearned Income—Debt Origination Fees and Original Issue Discount and Discounts / Premiums to Par Value

Main Street capitalizes debt origination fees received in connection with financings and reflects such fees as unearned income netted against the applicable debt investments. The unearned income from the fees is accreted into income based on the effective interest method over the life of the financing.

In connection with its portfolio debt investments, Main Street sometimes receives nominal cost warrants or warrants with an exercise price below the fair value of the underlying equity (together, "nominal cost equity") that are valued as part of the negotiation process with the particular portfolio company. When Main Street receives nominal cost equity, Main Street allocates its cost basis in its investment between its debt security and its nominal cost equity at the time of origination based on amounts negotiated with the particular portfolio company. The allocated amounts are based upon the fair value of the nominal cost equity, which is then used to determine the allocation of cost to the debt security. Any discount recorded on a debt investment resulting from this allocation is reflected as unearned income, which is netted against the applicable debt investment, and accreted into interest income based on the effective interest method over the life of the debt investment. The actual collection of this interest is deferred until the time of debt principal repayment.

Main Street may also purchase debt securities at a discount or at a premium to the par value of the debt security. In the case of a purchase at a discount, Main Street records the investment at the par value of the debt security net of the discount, and the discount is accreted into interest income based on the effective interest method over the life of the debt investment. In the case of a purchase at a premium, Main Street records the investment at the par value of the debt security plus the premium, and the premium is amortized as a reduction to interest income based on the effective interest method over the life of the debt investment.

To maintain RIC tax treatment (as discussed in Note B.9. below), these non-cash sources of income may need to be paid out to stockholders in the form of distributions, even though Main Street may not have collected the interest income. For the three months ended June 30, 2020 and 2019, approximately 2.6% and 2.5%, respectively, of Main Street's total investment income was attributable to interest income from the accretion of discounts associated with debt investments, net of any premium reduction. For the six months ended June 30, 2020 and 2019, approximately 2.6% and 2.7%, respectively, of Main Street's total investment income was attributable to interest income from the accretion of discounts associated with debt investments, net of any premium reduction.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

8.     Share-Based Compensation

Main Street accounts for its share-based compensation plans using the fair value method, as prescribed by ASC 718, Compensation—StockCompensation. Accordingly, for restricted stock awards, Main Street measures the grant date fair value based upon the market price of its common stock on the date of the grant and amortizes the fair value of the awards as share-based compensation expense over the requisite service period, which is generally the vesting term.

Main Street has also adopted Accounting Standards Update ("ASU") 2016-09, Compensation—Stock Compensation: Improvements to Employee Share-BasedPayment Accounting, which requires that all excess tax benefits and tax deficiencies (including tax benefits of dividends on share-based payment awards) be recognized as income tax expense or benefit in the income statement and not delay recognition of a tax benefit until the tax benefit is realized through a reduction to taxes payable. Accordingly, the tax effects of exercised or vested awards are treated as discrete items in the reporting period in which they occur. Additionally, Main Street has elected to account for forfeitures as they occur.

9.     Income Taxes

MSCC has elected to be treated for U.S. federal income tax purposes as a RIC. MSCC's taxable income includes the taxable income generated by MSCC and certain of its subsidiaries, including the Funds, which are treated as disregarded entities for tax purposes. As a RIC, MSCC generally will not pay corporate-level U.S. federal income taxes on any net ordinary taxable income or capital gains that MSCC distributes to its stockholders. MSCC must generally distribute at least 90% of its "investment company taxable income" (which is generally its net ordinary taxable income and realized net short-term capital gains in excess of realized net long-term capital losses) and 90% of its tax-exempt income to maintain its RIC status (pass-through tax treatment for amounts distributed). As part of maintaining RIC status, undistributed taxable income (subject to a 4% non-deductible U.S. federal excise tax) pertaining to a given fiscal year may be distributed up to 12 months subsequent to the end of that fiscal year, provided such dividends are declared on or prior to the later of (i) the filing of the U.S. federal income tax return for the applicable fiscal year or (ii) the fifteenth day of the ninth month following the close of the year in which such taxable income was generated.

The Taxable Subsidiaries primarily hold certain portfolio investments for Main Street. The Taxable Subsidiaries permit Main Street to hold equity investments in portfolio companies which are "pass-through" entities for tax purposes and to continue to comply with the "source-of-income" requirements contained in the RIC tax provisions of the Code. The Taxable Subsidiaries are consolidated with Main Street for U.S. GAAP financial reporting purposes, and the portfolio investments held by the Taxable Subsidiaries are included in Main Street's consolidated financial statements as portfolio investments and recorded at fair value. The Taxable Subsidiaries are not consolidated with MSCC for income tax purposes and may generate income tax expense, or benefit, and tax assets and liabilities, as a result of their ownership of certain portfolio investments. The taxable income, or loss, of the Taxable Subsidiaries may differ from their book income, or loss, due to temporary book and tax timing differences and permanent differences. The Taxable Subsidiaries are each taxed at their normal corporate tax rates based on their taxable income. The income tax expense, or benefit, if any, and the related tax assets and liabilities, of the Taxable Subsidiaries are reflected in Main Street's consolidated financial statements.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

The External Investment Manager is an indirect wholly owned subsidiary of MSCC owned through a Taxable Subsidiary and is a disregarded entity for tax purposes. The External Investment Manager has entered into a tax sharing agreement with its Taxable Subsidiary owner. Since the External Investment Manager is accounted for as a portfolio investment of MSCC and is not included as a consolidated subsidiary of MSCC in MSCC's consolidated financial statements, and as a result of the tax sharing agreement with its Taxable Subsidiary owner, for its stand-alone financial reporting purposes the External Investment Manager is treated as if it is taxed at normal corporate tax rates based on its taxable income and, as a result of its activities, may generate income tax expense or benefit. The income tax expense, or benefit, if any, and the related tax assets and liabilities, of the External Investment Manager are reflected in the External Investment Manager's separate financial statements.

The Taxable Subsidiaries and the External Investment Manager use the liability method in accounting for income taxes. Deferred tax assets and liabilities are recorded for temporary differences between the tax basis of assets and liabilities and their reported amounts in the consolidated financial statements, using statutory tax rates in effect for the year in which the temporary differences are expected to reverse. A valuation allowance is provided, if necessary, against deferred tax assets when it is more likely than not that some portion or all of the deferred tax asset will not be realized.

Taxable income generally differs from net income for financial reporting purposes due to temporary and permanent differences in the recognition of income and expenses. Taxable income generally excludes net unrealized appreciation or depreciation, as investment gains or losses are not included in taxable income until they are realized.

10.   Net Realized Gains or Losses and Net Unrealized Appreciation or Depreciation

Realized gains or losses are measured by the difference between the net proceeds from the sale or redemption of an investment or a financial instrument and the cost basis of the investment or financial instrument, without regard to unrealized appreciation or depreciation previously recognized, and includes investments written-off during the period net of recoveries and realized gains or losses from in-kind redemptions. Net unrealized appreciation or depreciation reflects the net change in the fair value of the Investment Portfolio and financial instruments and the reclassification of any prior period unrealized appreciation or depreciation on exited investments and financial instruments to realized gains or losses.

11.   Fair Value of Financial Instruments

Fair value estimates are made at discrete points in time based on relevant information. These estimates may be subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Main Street believes that the carrying amounts of its financial instruments, consisting of cash and cash equivalents, receivables, payables and other liabilities approximate the fair values of such items due to the short-term nature of these instruments.

As part of Main Street's acquisition of the majority of the equity interests of MSC II in January 2010 (the "MSC II Acquisition"), Main Street elected the fair value option under ASC 825, Financial Instruments ("ASC 825"), relating to accounting for debt obligations at their fair value, for the MSC II SBIC debentures acquired as part of the acquisition accounting related to the MSC II Acquisition and valued those obligations as discussed further in Note C. In order to provide for a more consistent basis of presentation, Main Street elected the fair value option for SBIC debentures issued by MSC II subsequent to the MSC II Acquisition. When the fair value option is elected for a given SBIC

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

debenture, the deferred loan costs associated with the debenture are fully expensed in the current period to "Net Unrealized Appreciation (Depreciation)—SBIC debentures" as part of the fair value adjustment. Interest incurred in connection with SBIC debentures which are valued at fair value is included in interest expense.

12.   Earnings per Share

Basic and diluted per share calculations are computed utilizing the weighted-average number of shares of common stock outstanding for the period. In accordance with ASC 260, Earnings Per Share, the unvested shares of restricted stock awarded pursuant to Main Street's equity compensation plans are participating securities and, therefore, are included in the basic earnings per share calculation. As a result, for all periods presented, there is no difference between diluted earnings per share and basic earnings per share amounts.

13.   Recently Issued or Adopted Accounting Standards

In August 2018, the SEC adopted rules (the "SEC Release") amending certain disclosure requirements intended to eliminate redundant, duplicative, overlapping, outdated, or superseded, in light of other SEC disclosure requirements, U.S. GAAP requirements or changes in the information environment. In part, the SEC Release requires an investment company to present distributable earnings in total on the consolidated balance sheet and consolidated statement of changes in net assets, rather than showing the three components of distributable earnings as previously shown. Main Street adopted this part of the SEC Release during the year ended December 31, 2018. The impact of the adoption of these rules on Main Street's consolidated financial statements was not material. Additionally, the SEC Release requires disclosure of changes in net assets within a registrant's Form 10-Q filings on a quarter-to-date and year-to-date basis for both the current year and prior year comparative periods. Main Street adopted the requirement to present changes in net assets in interim financial statements within Form 10-Q filings effective January 1, 2019. The adoption of these rules did not have a material impact on the consolidated financial statements.

In March 2020, the FASB issued ASU 2020-04, "Reference rate reform (Topic 848)—Facilitation of the effects of reference rate reform on financial reporting." The amendments in this update provide optional expedients and exceptions for applying U.S. GAAP to certain contracts and hedging relationships that reference LIBOR or another reference rate expected to be discontinued due to reference rate reform and became effective upon issuance for all entities. The Company has agreements that have LIBOR as a reference rate with certain portfolio companies and also with certain lenders. Many of these agreements include language for choosing an alternative successor rate if LIBOR reference is no longer considered to be appropriate. Contract modifications are required to be evaluated in determining whether the modifications result in the establishment of new contracts or the continuation of existing contracts. The Company adopted this amendment in March 2020 and plans to apply the amendments in this update to account for contract modifications due to changes in reference rates. The Company does not believe that it will have a material impact on its consolidated financial statements and disclosures.

In May 2020, the SEC adopted rules Release No. 33-10786 (the "Release"), Amendments to Financial Disclosures about Acquired and DisposedBusinesses, amending Rule 1-02(w)(2) used in the determination of a significant subsidiary. In part, the Release eliminated the use of the asset test, and amended the income and investment tests for determining whether an unconsolidated subsidiary

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

requires additional disclosure in the footnotes of the financial statements. Main Street adopted the Release during the quarter ended June 30, 2020. The impact of the adoption of these rules on Main Street's consolidated financial statements was not material.

From time to time, new accounting pronouncements are issued by the FASB or other standards setting bodies that are adopted by Main Street as of the specified effective date. Main Street believes that the impact of recently issued standards and any that are not yet effective will not have a material impact on its consolidated financial statements upon adoption.

NOTE C—FAIR VALUE HIERARCHY FOR INVESTMENTS AND DEBENTURES—PORTFOLIOCOMPOSITION

ASC 820 defines fair value, establishes a framework for measuring fair value, establishes a fair value hierarchy based on the quality of inputs used to measure fair value, and enhances disclosure requirements for fair value measurements. Main Street accounts for its investments at fair value.

**Fair Value Hierarchy**

In accordance with ASC 820, Main Street has categorized its investments based on the priority of the inputs to the valuation technique into a three-level fair value hierarchy. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical investments (Level 1) and the lowest priority to unobservable inputs (Level 3).

Investments recorded on Main Street's balance sheet are categorized based on the inputs to the valuation techniques as follows:

Level 1—Investments

whose values are based on unadjusted quoted prices for identical assets in an active market that Main Street has the ability to access (examples include investments in active exchange-traded equity securities and investments in most U.S. government and agency securities).

Level 2—Investments

whose values are based on quoted prices in markets that are not active or model inputs that are observable either directly or indirectly for substantially the full term of the investment. Level 2 inputs include the following:

  • •

    • Quoted prices for similar assets in active markets (for example, investments in restricted stock);

  • •

    • Quoted prices for identical or similar assets in non-active markets (for example, investments in thinly traded public companies);

  • •

    • Pricing models whose inputs are observable for substantially the full term of the investment (for example, market interest rate indices); and

  • •

    • Pricing models whose inputs are derived principally from, or corroborated by, observable market data through correlation or other means for substantially the full term of the investment.

    Level 3—Investments whose values are based on prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement (for example, investments in illiquid securities issued by privately held companies). These inputs reflect

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

management's

own assumptions about the assumptions a market participant would use in pricing the investment.

As required by ASC 820, when the inputs used to measure fair value fall within different levels of the hierarchy, the level within which the fair value measurement is categorized is based on the lowest level input that is significant to the fair value measurement in its entirety. For example, a Level 3 fair value measurement may include inputs that are observable (Levels 1 and 2) and unobservable (Level 3). Therefore, unrealized appreciation and depreciation related to such investments categorized within the Level 3 tables below may include changes in fair value that are attributable to both observable inputs (Levels 1 and 2) and unobservable inputs (Level 3).

As of June 30, 2020 and December 31, 2019, all of Main Street's LMM portfolio investments consisted of illiquid securities issued by privately held companies and the fair value determination for these investments primarily consisted of unobservable inputs. As a result, all of Main Street's LMM portfolio investments were categorized as Level 3 as of June 30, 2020 and December 31, 2019.

As of June 30, 2020 and December 31, 2019, Main Street's Middle Market portfolio investments consisted primarily of investments in secured and unsecured debt investments and independently rated debt investments. The fair value determination for these investments consisted of a combination of observable inputs in non-active markets for which sufficient observable inputs were not available to determine the fair value of these investments and unobservable inputs. As a result, all of Main Street's Middle Market portfolio investments were categorized as Level 3 as of June 30, 2020 and December 31, 2019.

As of June 30, 2020 and December 31, 2019, Main Street's Private Loan portfolio investments primarily consisted of investments in interest-bearing secured debt investments. The fair value determination for these investments consisted of a combination of observable inputs in non-active markets for which sufficient observable inputs were not available to determine the fair value of these investments and unobservable inputs. As a result, all of Main Street's Private Loan portfolio investments were categorized as Level 3 as of June 30, 2020 and December 31, 2019.

As of June 30, 2020 and December 31, 2019, Main Street's Other Portfolio investments consisted of illiquid securities issued by privately held companies and the fair value determination for these investments primarily consisted of unobservable inputs. As a result, all of Main Street's Other Portfolio investments were categorized as Level 3 as of June 30, 2020 and December 31, 2019.

The fair value determination of each portfolio investment categorized as Level 3 required one or more of the following unobservable inputs:

  • •
    • Financial information obtained from each portfolio company, including unaudited statements of operations and balance sheets for the most recent period available as compared to budgeted numbers;
  • •
    • Current and projected financial condition of the portfolio company;
  • •
    • Current and projected ability of the portfolio company to service its debt obligations;
  • •
    • Type and amount of collateral, if any, underlying the investment;
  • •
    • Current financial ratios (e.g., fixed charge coverage ratio, interest coverage ratio and net debt/EBITDA ratio) applicable to the investment;

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(Unaudited)

  • •
    • Current liquidity of the investment and related financial ratios (e.g., current ratio and quick ratio);
  • •
    • Pending debt or capital restructuring of the portfolio company;
  • •
    • Projected operating results of the portfolio company;
  • •
    • Current information regarding any offers to purchase the investment;
  • •
    • Current ability of the portfolio company to raise any additional financing as needed;
  • •
    • Changes in the economic environment which may have a material impact on the operating results of the portfolio company;
  • •
    • Internal occurrences that may have an impact (both positive and negative) on the operating performance of the portfolio company;
  • •
    • Qualitative assessment of key management;
  • •
    • Contractual rights, obligations or restrictions associated with the investment; and
  • •
    • Other factors deemed relevant.

The use of significant unobservable inputs creates uncertainty in the measurement of fair value as of the reporting date. The significant unobservable inputs used in the fair value measurement of Main Street's LMM equity securities, which are generally valued through an average of the discounted cash flow technique and the market comparable/enterprise value technique (unless one of these approaches is determined to not be appropriate), are (i) EBITDA multiples and (ii) the weighted-average cost of capital ("WACC"). Significant increases (decreases) in EBITDA multiple inputs in isolation would result in a significantly higher (lower) fair value measurement. On the contrary, significant increases (decreases) in WACC inputs in isolation would result in a significantly lower (higher) fair value measurement. The significant unobservable inputs used in the fair value measurement of Main Street's LMM, Middle Market and Private Loan securities are (i) risk adjusted discount rates used in the Yield-to-Maturity valuation technique (see "Note B.1.—Valuation of the Investment Portfolio") and (ii) the percentage of expected principal recovery. Significant increases (decreases) in any of these discount rates in isolation would result in a significantly lower (higher) fair value measurement. Significant increases (decreases) in any of these expected principal recovery percentages in isolation would result in a significantly higher (lower) fair value measurement. However, due to the nature of certain investments, fair value measurements may be based on other criteria, such as third-party appraisals of collateral and fair values as determined by independent third parties, which are not presented in the tables below.

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(Unaudited)

The following tables provide a summary of the significant unobservable inputs used to fair value Main Street's Level 3 portfolio investments as of June 30, 2020 and December 31, 2019:

Type of Investment Fair Valueas ofJune 30, 2020(in thousands) Valuation Technique Significant Unobservable Inputs Range(3) Weighted Average(3) Median(3)
Equity investments $ 774,139 Discounted cash flow WACC 9.5% - 21.0% 14.0% 14.8%
<br> Market comparable / Enterprise Value EBITDA multiple(1) 4.7x - 8.5x(2) 7.0x 6.2x
Debt investments $ 1,187,188 Discounted cash flow Risk adjusted discount factor 7.6% - 19.0%(2) 12.0% 11.8%
Expected principal recovery percentage 0.0% - 100.0% 99.3% 100.0%
Debt investments $ 458,226 Market approach Third-party quote 29.3 - 99.8 87.1 90.0
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total Level 3 investments $ 2,419,553
  • (1)
    • EBITDA may include proforma adjustments and/or other addbacks based on specific circumstances related to each investment.
  • (2)
    • Range excludes outliers that are greater than one standard deviation from the mean. Including these outliers, the range for EBITDA multiple is 4.0x - 15.0x and the range for risk adjusted discount factor is 5.3% - 42.5%.
  • (3)
    • Does not include investments for which the valuation technique does not include the use of the applicable fair value input.
Type of Investment Fair Valueas ofDecember 31, 2019(in thousands) Valuation Technique Significant Unobservable Inputs Range(3) WeightedAverage(3) Median(3)
Equity investments $ 819,749 Discounted cash flow WACC 9.6% -2 0.3% 13.6% 14.2%
<br> Market comparable / Enterprise Value EBITDA multiple(1) 4.9x - 8.5x(2) 7.2x 6.4x
Debt investments $ 1,212,741 Discounted cash flow Risk adjusted discount factor 5.9% - 16.5%(2) 10.4% 10.0%
Expected principal recovery percentage 1.4% - 100.0% 99.3% 100.0%
Debt investments $ 569,834 Market approach Third-party quote 28.1 - 101.0 94.7 98.0
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total Level 3 investments $ 2,602,324
  • (1)
    • EBITDA may include proforma adjustments and/or other addbacks based on specific circumstances related to each investment.
  • (2)
    • Range excludes outliers that are greater than one standard deviation from the mean. Including these outliers, the range for EBITDA multiple is 4.5x - 15.0x and the range for risk adjusted discount factor is 4.6% - 38.0%.
  • (3)
    • Does not include investments for which the valuation technique does not include the use of the applicable fair value input.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

The following tables provide a summary of changes in fair value of Main Street's Level 3 portfolio investments for the six-month periods ended June 30, 2020 and 2019 (amounts in thousands):

Type of Investment Fair Valueas ofDecember 31,2019 TransfersInto Level 3Hierarchy Redemptions/Repayments NewInvestments Net ChangesfromUnrealizedto Realized NetUnrealizedAppreciation(Depreciation) Other(1) Fair Valueas ofJune 30,2020
Debt $ 1,782,575 $ — $ (256,050 ) $ 225,646 $ 29,876 $ (124,365 ) $ (12,268 ) $ 1,645,414
Equity $ 809,538 $ — $ (21,380 ) $ 45,061 $ (1,112 ) $ (80,261 ) $ 12,268 $ 764,114
Equity Warrant $ 10,211 $ — $ (1,096 ) $ — $ 1,096 $ (186 ) $ — $ 10,025
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
$ 2,602,324 $ — $ (278,526 ) $ 270,707 $ 29,860 $ (204,812 ) $ — $ 2,419,553
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
  • (1)
    • Includes the impact of non-cash conversions. These transactions represent non-cash investing activities. See additional cash flow information at the consolidated statements of cash flows.
Type of Investment Fair Valueas ofDecember 31,2018 TransfersInto Level 3Hierarchy Redemptions/Repayments NewInvestments Net ChangesfromUnrealizedto Realized NetUnrealizedAppreciation(Depreciation) Other(1) Fair Valueas ofJune 30,2019
Debt $ 1,686,753 $ — $ (235,999 ) $ 254,123 $ 15,063 $ (8,776 ) $ (8,860 ) $ 1,702,304
Equity 755,710 — (11,298 ) 24,058 (5,869 ) 23,362 10,667 796,630
Equity Warrant 11,446 — 1,217 — (1,090 ) (271 ) (1,807 ) 9,495
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
$ 2,453,909 $ — $ (246,080 ) $ 278,181 $ 8,104 $ 14,315 $ — $ 2,508,429
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
  • (1)
    • Includes the impact of non-cash conversions. These transactions represent non-cash investing activities. See additional cash flow information at the consolidated statements of cash flows.

As of December 31, 2019, the fair value determination for the SBIC debentures recorded at fair value primarily consisted of unobservable inputs. As a result, the SBIC debentures which were recorded at fair value were categorized as Level 3. Main Street determined the fair value of these instruments primarily using a Yield-to-Maturity approach that analyzed the discounted cash flows of interest and principal for each SBIC debenture recorded at fair value based on estimated market interest rates for debt instruments of similar structure, terms, and maturity. Main Street's estimate of the expected repayment date of principal for each SBIC debenture recorded at fair value was the legal maturity date of the instrument. The significant unobservable inputs used in the fair value measurement of Main Street's SBIC debentures recorded at fair value were the estimated market interest rates used to fair value each debenture using the yield valuation technique described above. As of June 30, 2020, all of the SBIC debentures previously accounted for on a fair value basis have been repaid.

The following tables provide a summary of changes for the Level 3 SBIC debentures recorded at fair value for the six-month periods ended June 30, 2020 and 2019 (amounts in thousands):

Type of Instrument Fair Valueas ofDecember 31, 2019 Repayments NetRealizedLoss New SBICDebentures NetUnrealized(Appreciation)Depreciation Fair Valueas ofJune 30, 2020
SBIC debentures at fair value $ 21,927 $ (22,000 ) $ 533 $ — $ (460 ) $ —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Type of Instrument Fair Valueas ofDecember 31, 2018 Repayments NetRealizedLoss New SBICDebentures NetUnrealized(Appreciation)Depreciation Fair Valueas ofJune 30, 2019
--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
SBIC debentures at fair value $ 44,688 $ (24,000 ) $ 5,689 $ — $ (4,945 ) $ 21,432
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

The following tables provide a summary of the significant unobservable inputs used to fair value Main Street's Level 3 SBIC debentures as of December 31, 2019 (amounts in thousands):

Type of Instrument Fair Valueas ofDecember 31, 2019 Valuation Technique Significant Unobservable Inputs Range WeightedAverage
SBIC debentures $ 21,927 Discounted cash flow Estimated market interest rates 3.2% - 3.5% 3.2%

At June 30, 2020 and December 31, 2019, Main Street's investments and SBIC debentures at fair value were categorized as follows in the fair value hierarchy for ASC 820 purposes:

Fair Value Measurements
(in thousands)
At June 30, 2020 Fair Value Quoted Prices inActive Markets forIdentical Assets(Level 1) Significant OtherObservable Inputs(Level 2) SignificantUnobservable Inputs(Level 3)
LMM portfolio investments $ 1,188,005 $ — $ — $ 1,188,005
Middle Market portfolio investments 410,502 — — 410,502
Private Loan portfolio investments 653,824 — — 653,824
Other Portfolio investments 98,142 — — 98,142
External Investment Manager 69,080 — — 69,080
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total investments $ 2,419,553 $ — $ — $ 2,419,553
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Fair Value Measurements
--- --- --- --- --- --- --- --- --- --- --- --- --- ---
(in thousands)
At December 31, 2019 Fair Value Quoted Prices inActive Markets forIdentical Assets(Level 1) Significant OtherObservable Inputs(Level 2) SignificantUnobservable Inputs(Level 3)
LMM portfolio investments $ 1,206,865 $ — $ — $ 1,206,865
Middle Market portfolio investments 522,083 — — 522,083
Private Loan portfolio investments 692,117 — — 692,117
Other Portfolio investments 106,739 — — 106,739
External Investment Manager 74,520 — — 74,520
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total investments $ 2,602,324 $ — $ — $ 2,602,324
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
SBIC debentures at fair value $ 21,927 $ — $ — $ 21,927
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Investment Portfolio Composition

Main Street's LMM portfolio investments primarily consist of secured debt, equity warrants and direct equity investments in privately held, LMM companies based in the United States. Main Street's LMM portfolio companies generally have annual revenues between $10 million and $150 million, and its LMM investments generally range in size from $5 million to $50 million. The LMM debt investments are typically secured by either a first or second priority lien on the assets of the portfolio company, can include either fixed or floating rate terms and generally have a term of between five and

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(Unaudited)

seven years from the original investment date. In most LMM portfolio investments, Main Street receives nominally priced equity warrants and/or makes direct equity investments in connection with a debt investment.

Main Street's Middle Market portfolio investments primarily consist of direct investments in or secondary purchases of interest-bearing debt securities in privately held companies based in the United States that are generally larger in size than the companies included in Main Street's LMM portfolio. Main Street's Middle Market portfolio companies generally have annual revenues between $150 million and $1.5 billion, and its Middle Market investments generally range in size from $3 million to $20 million. Main Street's Middle Market portfolio debt investments are generally secured by either a first or second priority lien on the assets of the portfolio company and typically have a term of between three and seven years from the original investment date.

Main Street's Private Loan portfolio investments are primarily debt securities in privately held companies which have been originated through strategic relationships with other investment funds on a collaborative basis, and are often referred to in the debt markets as "club deals." Private Loan investments are typically similar in size, structure, terms and conditions to investments Main Street holds in its LMM portfolio and Middle Market portfolio. Main Street's Private Loan portfolio debt investments are generally secured by either a first or second priority lien on the assets of the portfolio company and typically have a term of between three and seven years from the original investment date.

Main Street's Other Portfolio investments primarily consist of investments which are not consistent with the typical profiles for LMM, Middle Market and Private Loan portfolio investments, including investments which may be managed by third parties. In the Other Portfolio, Main Street may incur indirect fees and expenses in connection with investments managed by third parties, such as investments in other investment companies or private funds. For Other Portfolio investments, Main Street generally receives distributions related to the assets held by the portfolio company. Those assets are typically expected to be liquidated over a five to ten-year period.

Main Street's external asset management business is conducted through its External Investment Manager. The External Investment Manager earns management fees based on the assets of the funds under management and may earn incentive fees, or a carried interest, based on the performance of the funds managed. Main Street entered into an agreement with the External Investment Manager to share employees in connection with its asset management business generally, and specifically for its relationship with HMS Income Fund, Inc. ("HMS Income"). Through this agreement, Main Street shares employees with the External Investment Manager, including their related infrastructure, business relationships, management expertise and capital raising capabilities. Main Street allocates the related expenses to the External Investment Manager pursuant to the sharing agreement. Main Street's total expenses for the three months ended June 30, 2020 and 2019 are net of expenses allocated to the External Investment Manager of $1.8 million and $1.7 million, respectively. Main Street's total expenses for each of the six months ended June 30, 2020 and 2019 are net of expenses allocated to the External Investment Manager of $3.4 million.

Investment income, consisting of interest, dividends and fees, can fluctuate dramatically due to various factors, including the level of new investment activity, repayments of debt investments or sales of equity interests. Investment income in any given year could also be highly concentrated among several portfolio companies. For the three and six months ended June 30, 2020 and 2019, Main Street did not record investment income from any single portfolio company in excess of 10% of total investment income.

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(Unaudited)

The following tables provide a summary of Main Street's investments in the LMM, Middle Market and Private Loan portfolios as of June 30, 2020 and December 31, 2019 (this information excludes the Other Portfolio investments and the External Investment Manager which are discussed further below):

As of June 30, 2020
LMM(a) Middle Market Private Loan
(dollars in millions)
Number of portfolio companies 69 44 64
Fair value $ 1,188.0 $ 410.5 $ 653.8
Cost $ 1,032.3 $ 516.5 $ 750.7
% of portfolio at cost—debt 65.5% 94.1% 93.1%
% of portfolio at cost—equity 34.5% 5.9% 6.9%
% of debt investments at cost secured by first priority lien 98.2% 92.1% 95.3%
Weighted-average annual effective yield(b) 11.6% 7.7% 8.7%
Average EBITDA(c) $ 5.3 $ 78.1 $ 51.8
  • (a)
    • At June 30, 2020, Main Street had equity ownership in approximately 99% of its LMM portfolio companies, and the average fully diluted equity ownership in those portfolio companies was approximately 41%.
  • (b)
    • The weighted-average annual effective yields were computed using the effective interest rates for all debt investments at cost as of June 30, 2020, including amortization of deferred debt origination fees and accretion of original issue discount but excluding fees payable upon repayment of the debt instruments and any debt investments on non-accrual status. The weighted-average annual effective yield is higher than what an investor in shares of Main Street's common stock will realize on its investment because it does not reflect Main Street's expenses or any sales load paid by an investor.
  • (c)
    • The average EBITDA is calculated using a simple average for the LMM portfolio and a weighted-average for the Middle Market and Private Loan portfolios. These calculations exclude certain portfolio companies, including two LMM portfolio companies, two Middle Market portfolio companies and four Private Loan portfolio companies, as EBITDA is not a meaningful valuation metric for Main Street's investments in these portfolio companies, and those portfolio companies whose primary purpose is to own real estate.
As of December 31, 2019
LMM(a) Middle Market Private Loan
(dollars in millions)
Number of portfolio companies 69 51 65
Fair value $ 1,206.9 $ 522.1 $ 692.1
Cost $ 1,002.2 $ 572.3 $ 734.8
% of portfolio at cost—debt 65.9% 94.8% 94.6%
% of portfolio at cost—equity 34.1% 5.2% 5.4%
% of debt investments at cost secured by first priority lien 98.1% 91.3% 95.4%
Weighted-average annual effective yield(b) 11.8% 8.6% 9.5%
Average EBITDA(c) $ 5.1 $ 85.0 $ 57.8
  • (a)
    • At December 31, 2019, Main Street had equity ownership in approximately 99% of its LMM portfolio companies, and the average fully diluted equity ownership in those portfolio companies was approximately 42%.

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(Unaudited)

  • (b)
    • The weighted-average annual effective yields were computed using the effective interest rates for all debt investments at cost as of December 31, 2019, including amortization of deferred debt origination fees and accretion of original issue discount but excluding fees payable upon repayment of the debt instruments and any debt investments on non-accrual status. The weighted-average annual effective yield is higher than what an investor in shares of Main Street's common stock will realize on its investment because it does not reflect Main Street's expenses or any sales load paid by an investor.
  • (c)
    • The average EBITDA is calculated using a simple average for the LMM portfolio and a weighted-average for the Middle Market and Private Loan portfolios. These calculations exclude certain portfolio companies, including three LMM portfolio companies, two Middle Market portfolio companies and three Private Loan portfolio companies, as EBITDA is not a meaningful valuation metric for Main Street's investments in these portfolio companies, and those portfolio companies whose primary purpose is to own real estate.

As of June 30, 2020, Main Street had Other Portfolio investments in twelve companies, collectively totaling approximately $98.1 million in fair value and approximately $126.4 million in cost basis and which comprised approximately 4.1% of Main Street's Investment Portfolio at fair value. As of December 31, 2019, Main Street had Other Portfolio investments in eleven companies, collectively totaling approximately $106.7 million in fair value and approximately $118.4 million in cost basis and which comprised approximately 4.1% of Main Street's Investment Portfolio at fair value.

As discussed further in Note A.1., Main Street holds an investment in the External Investment Manager, a wholly owned subsidiary that is treated as a portfolio investment. As of June 30, 2020, there was no cost basis in this investment and the investment had a fair value of approximately $69.1 million, which comprised approximately 2.9% of Main Street's Investment Portfolio at fair value. As of December 31, 2019, there was no cost basis in this investment and the investment had a fair value of approximately $74.5 million, which comprised approximately 2.9% of Main Street's Investment Portfolio at fair value.

The following tables summarize the composition of Main Street's total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments at cost and fair value by type of investment as a percentage of the total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments, as of June 30, 2020 and December 31, 2019 (this information excludes the Other Portfolio investments and the External Investment Manager).

Cost: June 30, 2020 December 31, 2019
First lien debt 77.4% 78.2%
Equity 18.5% 17.2%
Second lien debt 3.1% 3.5%
Equity warrants 0.5% 0.6%
Other 0.5% 0.5%
​ ​ ​ ​ ​ ​ ​ ​
100.0% 100.0%
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​

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Fair Value: June 30, 2020 December 31, 2019
First lien debt 69.8% 70.1%
Equity 26.5% 26.0%
Second lien debt 2.8% 3.0%
Equity warrants 0.4% 0.4%
Other 0.5% 0.5%
​ ​ ​ ​ ​ ​ ​ ​
100.0% 100.0%
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​

The following tables summarize the composition of Main Street's total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments by geographic region of the United States and other countries at cost and fair value as a percentage of the total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments, as of June 30, 2020 and December 31, 2019 (this information excludes the Other Portfolio investments and the External Investment Manager). The geographic composition is determined by the location of the corporate headquarters of the portfolio company.

Cost: June 30, 2020 December 31, 2019
Southwest 25.9% 25.0%
West 21.5% 24.6%
Midwest 19.6% 20.6%
Northeast 18.2% 14.8%
Southeast 13.1% 13.2%
Canada 1.2% 1.2%
Other Non-United States 0.5% 0.6%
​ ​ ​ ​ ​ ​ ​ ​
100.0% 100.0%
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
Fair Value: June 30, 2020 December 31, 2019
--- --- --- --- --- --- --- ---
Southwest 26.6% 26.7%
West 22.2% 25.1%
Midwest 19.6% 20.6%
Northeast 18.2% 14.4%
Southeast 11.8% 11.6%
Canada 1.1% 1.1%
Other Non-United States 0.5% 0.5%
​ ​ ​ ​ ​ ​ ​ ​
100.0% 100.0%
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​

Main Street's LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments are in companies conducting business in a variety of industries. The following tables summarize the composition of Main Street's total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments by industry at cost and fair value

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

as of June 30, 2020 and December 31, 2019 (this information excludes the Other Portfolio investments and the External Investment Manager).

Cost: June 30, 2020 December 31, 2019
Machinery 7.5% 7.7%
Commercial Services & Supplies 5.3% 6.1%
Aerospace & Defense 5.1% 4.9%
Energy Equipment & Services 5.0% 5.4%
Professional Services 5.0% 2.9%
Health Care Providers & Services 4.8% 4.5%
Construction & Engineering 4.7% 5.4%
Internet Software & Services 4.3% 4.1%
Media 4.1% 5.3%
IT Services 4.0% 4.6%
Diversified Telecommunication Services 3.9% 3.9%
Leisure Equipment & Products 3.9% 3.8%
Hotels, Restaurants & Leisure 3.8% 3.7%
Software 3.5% 2.4%
Electronic Equipment, Instruments & Components 3.4% 3.5%
Communications Equipment 3.4% 3.1%
Oil, Gas & Consumable Fuels 3.3% 3.6%
Specialty Retail 3.0% 3.1%
Food Products 2.9% 3.0%
Distributors 2.5% 1.1%
Diversified Financial Services 1.9% 1.9%
Containers & Packaging 1.7% 1.7%
Computers & Peripherals 1.5% 2.3%
Trading Companies & Distributors 1.3% 0.0%
Diversified Consumer Services 1.1% 0.4%
Transportation Infrastructure 1.1% 1.0%
Food & Staples Retailing 1.1% 1.0%
Chemicals 1.0% 1.0%
Internet & Catalog Retail 1.0% 0.9%
Building Products 0.9% 1.3%
Construction Materials 0.4% 1.0%
Road & Rail 0.4% 1.4%
Other(1) 3.2% 4.0%
​ ​ ​ ​ ​ ​ ​ ​
100.0% 100.0%
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
  • (1)
    • Includes various industries with each industry individually less than 1.0% of the total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments at each date.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

Fair Value: June 30, 2020 December 31, 2019
Machinery 9.8% 9.9%
Construction & Engineering 5.2% 5.6%
Aerospace & Defense 5.1% 4.7%
Commercial Services & Supplies 4.6% 5.5%
Health Care Providers & Services 4.5% 4.3%
IT Services 3.9% 4.8%
Energy Equipment & Services 3.9% 4.9%
Software 3.9% 2.7%
Internet Software & Services 3.8% 3.8%
Media 3.8% 4.7%
Professional Services 3.8% 2.2%
Leisure Equipment & Products 3.5% 3.5%
Specialty Retail 3.3% 3.4%
Diversified Telecommunication Services 3.3% 3.3%
Computers & Peripherals 3.2% 3.8%
Diversified Consumer Services 3.1% 2.2%
Oil, Gas & Consumable Fuels 2.9% 3.2%
Communications Equipment 2.9% 2.7%
Electronic Equipment, Instruments & Components 2.7% 2.7%
Hotels, Restaurants & Leisure 2.6% 3.3%
Food Products 2.6% 2.7%
Distributors 2.4% 1.0%
Diversified Financial Services 2.2% 2.1%
Containers & Packaging 1.9% 1.7%
Trading Companies & Distributors 1.2% 0.0%
Construction Materials 1.1% 1.5%
Transportation Infrastructure 1.1% 1.0%
Food & Staples Retailing 1.1% 1.0%
Building Products 1.0% 1.2%
Air Freight & Logistics 1.0% 0.8%
Chemicals 1.0% 0.9%
Road & Rail 0.6% 1.5%
Other(1) 3.0% 3.4%
​ ​ ​ ​ ​ ​ ​ ​
100.0% 100.0%
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
  • (1)
    • Includes various industries with each industry individually less than 1.0% of the total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments at each date.

At June 30, 2020 and December 31, 2019, Main Street had no portfolio investment that was greater than 10% of the Investment Portfolio at fair value.

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(Unaudited)

Unconsolidated Significant Subsidiaries

In accordance with Rules 3-09 and 4-08(g) of Regulation S-X, Main Street must determine which of its unconsolidated controlled portfolio companies, if any, are considered "significant subsidiaries." On May 20, 2020, the SEC published in Release No. 33-10786, Amendments to FinancialDisclosures about Acquired and Disposed Businesses, amendments to Rule 1-02(w)(2) of Regulation S-X used in the determination of a significant subsidiary specific to investment companies, including BDCs. The amendments become effective on January 1, 2021, but the SEC allowed for early application. Main Street elected to apply these revisions effective June 30, 2020. In evaluating its unconsolidated controlled portfolio companies in accordance with the revised rules, there are two tests that Main Street must utilize to determine if any of Main Street's Control Investments (as defined in Note A, including those unconsolidated portfolio companies defined as Control Investments in which Main Street does not own greater than 50% of the voting securities or maintain greater than 50% of the board representation) are considered significant subsidiaries: the investment test and the income test. The investment test is generally measured by dividing Main Street's investment in the Control Investment by the value of Main Street's total assets. The income test is measured by dividing the absolute value of the combined total of total investment income, net realized gain (loss) and net unrealized appreciation (depreciation) from the relevant Control Investment for the period being tested by the absolute value of Main Street's change in net assets resulting from operations for the same period. Rules 3-09 and 4-08(g) of Regulation S-X, as interpreted by the SEC, require Main Street to include (1) separate audited financial statements of an unconsolidated majority-owned subsidiary (Control Investments in which Main Street owns greater than 50% of the voting securities) in an annual report and (2) summarized financial information of a Control Investment in a quarterly report, respectively, if certain thresholds of the investment or income tests are exceeded and the unconsolidated portfolio company qualifies as a significant subsidiary.

As of June 30, 2020 and December 31, 2019, Main Street had no single investment that qualified as a significant subsidiary under either the investment or income tests.

NOTE D—EXTERNAL INVESTMENT MANAGER

As discussed further in Note A.1., the External Investment Manager provides investment management and other services to External Parties. The External Investment Manager is accounted for as a portfolio investment of MSCC since the External Investment Manager conducts all of its investment management activities for External Parties.

During May 2012, Main Street entered into an investment sub-advisory agreement with HMS Adviser, LP ("HMS Adviser"), which is the investment advisor to HMS Income, a non-listed BDC, to provide certain investment advisory services to HMS Adviser. In December 2013, after obtaining required no-action relief from the SEC to allow it to own a registered investment adviser, Main Street assigned the sub-advisory agreement to the External Investment Manager since the fees received from such arrangement could otherwise have negative consequences on MSCC's ability to meet the source-of-income requirement necessary for it to maintain its RIC tax treatment. Under the investment sub-advisory agreement, the External Investment Manager is entitled to 50% of the base management fee and the incentive fees earned by HMS Adviser under its advisory agreement with HMS Income. During the three months ended June 30, 2020 and 2019, the External Investment Manager earned $2.3 million and $4.1 million, respectively, in base management fee income. No incentive fee income was earned in the three months ended June 30, 2020 compared to $1.3 million earned in the three

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

NOTE D—EXTERNAL INVESTMENT MANAGER (Continued)

months ended June 30, 2019. During the six months ended June 30, 2020, the External Investment Manager earned $4.8 million in base management fee income and no incentive fees compared to $5.7 million of base management fees and $1.4 million in incentive fees for the comparable period in 2019 under the sub-advisory agreement with HMS Adviser.

The investment in the External Investment Manager is accounted for using fair value accounting, with the fair value determined by Main Street and approved, in good faith, by Main Street's Board of Directors. Main Street determines the fair value of the External Investment Manager using the Waterfall valuation method under the market approach (see further discussion in Note B.1.). Any change in fair value of the investment in the External Investment Manager is recognized on Main Street's consolidated statements of operations in "Net Unrealized Appreciation (Depreciation)—Control investments."

The External Investment Manager is an indirect wholly owned subsidiary of MSCC owned through a Taxable Subsidiary and is a disregarded entity for tax purposes. The External Investment Manager has entered into a tax sharing agreement with its Taxable Subsidiary owner. Since the External Investment Manager is accounted for as a portfolio investment of MSCC and is not included as a consolidated subsidiary of MSCC in MSCC's consolidated financial statements, and as a result of the tax sharing agreement with its Taxable Subsidiary owner, for financial reporting purposes the External Investment Manager is treated as if it is taxed at normal corporate tax rates based on its taxable income and, as a result of its activities, may generate income tax expense or benefit. Main Street owns the External Investment Manager through the Taxable Subsidiary to allow MSCC to continue to comply with the "source-of-income" requirements contained in the RIC tax provisions of the Code. The taxable income, or loss, of the External Investment Manager may differ from its book income, or loss, due to temporary book and tax timing differences and permanent differences. As a result of the above described financial reporting and tax treatment, the External Investment Manager provides for any income tax expense, or benefit, and any tax assets or liabilities in its separate financial statements.

Main Street shares employees with the External Investment Manager and allocates costs related to such shared employees to the External Investment Manager generally based on a combination of the direct time spent, new investment origination activity and assets under management, depending on the nature of the expense. For the three months ended June 30, 2020 and 2019, Main Street allocated $1.8 million and $1.7 million of total expenses, respectively, to the External Investment Manager. For each of the six months ended June 30, 2020 and 2019, Main Street allocated $3.4 million of total expenses to the External Investment Manager. The total contribution of the External Investment Manager to Main Street's net investment income consists of the combination of the expenses allocated to the External Investment Manager and the dividend income earned from the External Investment Manager. For the three months ended June 30, 2020 and 2019, the total contribution to Main Street's net investment income was $2.2 million and $3.6 million, respectively. For the six months ended June 30, 2020, and 2019, the total contribution to Main Street's net investment income was $4.5 million and $6.2 million, respectively.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

Summarized financial information from the separate financial statements of the External Investment Manager as of June 30, 2020 and December 31, 2019 and for the three and six months ended June 30, 2020 and 2019 is as follows:

As ofJune 30,2020 As ofDecember 31,2019
(dollars in thousands)
Cash $ — $ —
Accounts receivable—HMS Income 4,836 2,708
​ ​ ​ ​ ​ ​ ​ ​
Total assets $ 4,836 $ 2,708
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
Accounts payable to MSCC and its subsidiaries $ 3,780 $ 1,592
Dividend payable to MSCC and its subsidiaries 1,056 1,116
Equity — —
​ ​ ​ ​ ​ ​ ​ ​
Total liabilities and equity $ 4,836 $ 2,708
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
Three Months Ended June 30, Six Months Ended June 30,
--- --- --- --- --- --- --- --- --- --- --- --- --- ---
2020 2019 2020 2019
(dollars in thousands)
Management fee income $ 2,323 $ 2,800 $ 4,822 $ 5,677
Incentive fees — 1,294 — 1,374
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total revenues 2,323 4,094 4,822 7,051
Expenses allocated from MSCC or its subsidiaries:
Salaries, share-based compensation and other personnel costs (1,127 ) (1,121 ) (2,187 ) (2,176 )
Other G&A expenses (677 ) (586 ) (1,261 ) (1,174 )
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total allocated expenses (1,804 ) (1,707 ) (3,448 ) (3,350 )
Other direct G&A expenses — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total expenses (1,804 ) (1,707 ) (3,448 ) (3,350 )
Pre-tax income 519 2,387 1,374 3,701
Tax expense (123 ) (526 ) (318 ) (820 )
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Net income $ 396 $ 1,861 $ 1,056 $ 2,881
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

NOTE E—DEBT

SBIC Debentures

Under existing SBIC regulations, SBA-approved SBICs under common control have the ability to issue debentures guaranteed by the SBA up to a regulatory maximum amount of $350.0 million. Main Street's SBIC debentures payable, under existing SBA-approved commitments, were $314.8 million and $311.8 million at June 30, 2020 and December 31, 2019, respectively. SBIC debentures provide for interest to be paid semiannually, with principal due at the applicable 10-year maturity date of each debenture. During the six months ended June 30, 2020, Main Street issued $25.0 million of SBIC debentures and opportunistically prepaid the remaining $22.0 million of existing MSC II SBIC debentures. As a result of this prepayment, Main Street recognized a realized loss of $0.5 million, due

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

primarily to the write-off of the related unamortized deferred financing costs. Main Street expects to issue new SBIC debentures under the SBIC program in the future in an amount up to the regulatory maximum amount for affiliated SBIC funds. The weighted-average annual interest rate on the SBIC debentures was 3.5% and 3.6% as of June 30, 2020 and December 31, 2019, respectively. The first principal maturity due under the existing SBIC debentures is in 2020, and the weighted-average remaining duration as of June 30, 2020 was approximately 5.3 years. For the three months ended June 30, 2020 and 2019, Main Street recognized interest expense, including the amortization of upfront leverage and other miscellaneous fees, attributable to the SBIC debentures of $3.0 million and $3.2 million, respectively. For the six months ended June 30, 2020 and 2019, Main Street recognized interest expense, including the amortization of upfront leverage and other miscellaneous fees, attributable to the SBIC debentures of $6.0 million and $6.5 million, respectively. In accordance with SBIC regulations, the Funds are precluded from incurring additional non-SBIC debt without the prior approval of the SBA.

As of June 30, 2020, the recorded value of the SBIC debentures was $308.8 million, which consisted of (i) $139.8 million par value of SBIC debentures outstanding issued by MSMF, with a recorded value of $138.4 million that was net of unamortized debt issuance costs of $1.4 million and (ii) $175.0 million par value of SBIC debentures issued by MSC III with a recorded value of $170.4 million that was net of unamortized debt issuance costs of $4.6 million. As of June 30, 2020, if Main Street had adopted the fair value option under ASC 825 for its SBIC debentures, Main Street estimates the fair value of its SBIC debentures would be approximately $290.1 million, or $24.7 million less than the $314.8 million face value of the SBIC debentures.

Credit Facility

Main Street maintains the Credit Facility to provide additional liquidity to support its investment and operational activities. The Credit Facility includes total commitments of $740.0 million from a diversified group of 18 lenders. The Credit Facility matures in September 2023 and contains an accordion feature which allows Main Street to increase the total commitments under the facility to up to $800.0 million from new and existing lenders on the same terms and conditions as the existing commitments.

Borrowings under the Credit Facility bear interest, subject to Main Street's election and resetting on a monthly basis on the first of each month, on a per annum basis at a rate equal to the applicable LIBOR rate (0.2% as of June 30, 2020) plus (i) 1.875% (or the applicable base rate (Prime Rate of 3.25% as of June 30, 2020) plus 0.875%) as long as Main Street meets certain agreed upon excess collateral and maximum leverage requirements or (ii) 2.0% (or the applicable base rate plus 1.0%) otherwise. Main Street pays unused commitment fees of 0.25% per annum on the unused lender commitments under the Credit Facility. The Credit Facility is secured by a first lien on the assets of MSCC and its subsidiaries, excluding the equity ownership or assets of the Funds and the External Investment Manager. The Credit Facility contains certain affirmative and negative covenants, including but not limited to: (i) maintaining a minimum availability of at least 10% of the borrowing base, (ii) maintaining an interest coverage ratio of at least 2.0 to 1.0, (iii) maintaining an asset coverage ratio (tangible net worth to Credit Facility borrowings) of at least 1.5 to 1.0 and (iv) maintaining a minimum tangible net worth. The Credit Facility is provided on a revolving basis through its final maturity date in September 2023, and contains two, one-year extension options which could extend the final maturity by up to two years, subject to certain conditions, including lender approval.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

At June 30, 2020, Main Street had $315.0 million in borrowings outstanding under the Credit Facility. As of June 30, 2020, if Main Street had adopted the fair value option under ASC 825 for its Credit Facility, Main Street estimates its fair value would approximate its recorded value. Main Street recognized interest expense related to the Credit Facility, including unused commitment fees and amortization of deferred issuance costs, of $2.4 million and $2.2 million for the three months ended June 30, 2020 and 2019, respectively, and $5.4 million and $6.4 million for the six months ended June 30, 2020 and 2019, respectively. As of June 30, 2020, the interest rate on the Credit Facility was 2.0% (based on the LIBOR rate of 0.2% as of the most recent reset date plus 1.875%). The average interest rate for borrowings under the Credit Facility was 2.4% and 4.4% for the three months ended June 30, 2020 and 2019, respectively, and 3.0% and 4.4%, for the six months ended June, 2020 and 2019, respectively. As of June 30, 2020, Main Street was in compliance with all financial covenants of the Credit Facility.

4.50% Notes due 2019

In November 2014, Main Street issued $175.0 million in aggregate principal amount of 4.50% unsecured notes due 2019 (the "4.50% Notes due 2019") at an issue price of 99.53%. The 4.50% Notes due 2019 bore interest at a rate of 4.50% per year payable semiannually on June 1 and December 1 of each year. On December 2, 2019, Main Street repaid the entire principal amount of the issued and outstanding 4.50% Notes due 2019, effective December 1, 2019 (the "Maturity Date"), at par value plus the accrued and unpaid interest thereon from June 1, 2019 through the Maturity Date. Main Street recognized no interest expense related to the 4.50% Notes due 2019, including amortization of unamortized deferred issuance costs, for the three and six months ended June 30, 2020 and $2.1 million and $4.3 million for the three and six months ended June 30, 2019, respectively.

4.50% Notes due 2022

In November 2017, Main Street issued $185.0 million in aggregate principal amount of 4.50% unsecured notes due December 1, 2022 (the "4.50% Notes due 2022") at an issue price of 99.16%. The 4.50% Notes due 2022 are unsecured obligations and rank pari passu with Main Street's current and future unsecured indebtedness; senior to any of its future indebtedness that expressly provides it is subordinated to the 4.50% Notes due 2022; effectively subordinated to all of its existing and future secured indebtedness, to the extent of the value of the assets securing such indebtedness, including borrowings under its Credit Facility; and structurally subordinated to all existing and future indebtedness and other obligations of any of its subsidiaries, including without limitation, the indebtedness of the Funds. The 4.50% Notes due 2022 may be redeemed in whole or in part at any time at Main Street's option subject to certain make-whole provisions. The 4.50% Notes due 2022 bear interest at a rate of 4.50% per year payable semiannually on June 1 and December 1 of each year. The total net proceeds from the 4.50% Notes due 2022, resulting from the issue price and after underwriting discounts and estimated offering expenses payable, were approximately $182.2 million. Main Street may from time to time repurchase the 4.50% Notes due 2022 in accordance with the 1940 Act and the rules promulgated thereunder. As of June 30, 2020, the outstanding balance of the 4.50% Notes due 2022 was $185.0 million and the recorded value of $183.5 million was net of unamortized debt issuance costs of $1.5 million. As of June 30, 2020, if Main Street had adopted the fair value option under ASC 825 for the 4.50% Notes due 2022, Main Street estimates its fair value would be approximately $187.1 million. Main Street recognized interest expense related to the 4.50% Notes due 2022, including amortization of unamortized deferred issuance costs, of $2.2 million for each of the

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

three months ended June 30, 2020 and 2019 and $4.5 million for each of the six months ended June 30, 2020 and 2019.

The indenture governing the 4.50% Notes due 2022 (the "4.50% Notes due 2022 Indenture") contains certain covenants, including covenants requiring Main Street's compliance with (regardless of whether Main Street is subject to) the asset coverage requirements set forth in Section 18(a)(1)(A) as modified by Section 61(a)(1) of the 1940 Act, as well as covenants requiring Main Street to provide financial information to the holders of the 4.50% Notes due 2022 and the Trustee if Main Street ceases to be subject to the reporting requirements of the Exchange Act. These covenants are subject to limitations and exceptions that are described in the 4.50% Notes due 2022 Indenture. As of June 30, 2020, Main Street was in compliance with these covenants.

5.20% Notes

In April 2019, Main Street issued $250.0 million in aggregate principal amount of 5.20% unsecured notes due May 1, 2024 (the "5.20% Notes") at an issue price of 99.125%. Subsequently, in December 2019, Main Street issued an additional $75.0 million of the 5.20% Notes at an issue price of 105.0%. The 5.20% Notes issued in December 2019 have identical terms as, and are a part of a single series with, the 5.20% Notes issued in April 2019. The 5.20% Notes are unsecured obligations and rank pari passu with Main Street's current and future unsecured indebtedness; senior to any of its future indebtedness that expressly provides it is subordinated to the 5.20% Notes; effectively subordinated to all of its existing and future secured indebtedness, to the extent of the value of the assets securing such indebtedness, including borrowings under its Credit Facility; and structurally subordinated to all existing and future indebtedness and other obligations of any of its subsidiaries, including without limitation, the indebtedness of the Funds. The 5.20% Notes may be redeemed in whole or in part at any time at Main Street's option subject to certain make-whole provisions. The 5.20% Notes bear interest at a rate of 5.20% per year payable semiannually on May 1 and November 1 of each year. The total net proceeds from the 5.20% Notes, resulting from the issue price and after underwriting discounts and estimated offering expenses payable, were approximately $324.1 million. Main Street may from time to time repurchase the 5.20% Notes in accordance with the 1940 Act and the rules promulgated thereunder. As of June 30, 2020, the outstanding balance of the 5.20% Notes was $325.0 million and the recorded value of $324.5 million was net of unamortized debt issuance costs of $0.5 million. As of June 30, 2020, if Main Street had adopted the fair value option under ASC 825 for the 5.20% Notes, Main Street estimates its fair value would be approximately $332.8 million. Main Street recognized interest expense related to the 5.20% Notes, including amortization of unamortized deferred issuance costs, of $4.3 million and $2.6 million for the three months ended June 30, 2020 and 2019, respectively, and $8.5 million and $2.6 million for the six months ended June 30, 2020 and 2019, respectively.

The indenture governing the 5.20% Notes (the "5.20% Notes Indenture") contains certain covenants, including covenants requiring Main Street's compliance with (regardless of whether Main Street is subject to) the asset coverage requirements set forth in Section 18(a)(1)(A) as modified by Section 61(a)(1) of the 1940 Act, as well as covenants requiring Main Street to provide financial information to the holders of the 5.20% Notes and the Trustee if Main Street ceases to be subject to the reporting requirements of the Exchange Act. These covenants are subject to limitations and exceptions that are described in the 5.20% Notes Indenture. As of June 30, 2020, Main Street was in compliance with these covenants.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

NOTE F—FINANCIAL HIGHLIGHTS

Six Months Ended June 30,
Per Share Data: 2020 2019
NAV at the beginning of the period $ 23.91 $ 24.09
Net investment income(1) 1.04 1.27
Net realized loss(1)(2) (0.48 ) (0.22 )
Net unrealized appreciation (depreciation)(1)(2) (2.78 ) 0.34
Income tax benefit (provision)(1)(2) 0.25 (0.11 )
​ ​ ​ ​ ​ ​ ​ ​
Net increase (decrease) in net assets resulting from operations(1) (1.97 ) 1.28
Dividends paid (1.23 ) (1.44 )
Impact of the net change in monthly dividends declared prior to the end of the period and paid in the subsequent period — (0.01 )
Accretive effect of stock offerings (issuing shares above NAV per share) 0.17 0.25
Accretive effect of DRIP issuance (issuing shares above NAV per share) 0.05 0.05
Other(3) (0.08 ) (0.05 )
​ ​ ​ ​ ​ ​ ​ ​
NAV at the end of the period $ 20.85 $ 24.17
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
Market value at the end of the period $ 20.51 $ 41.12
Shares outstanding at the end of the period 65,763,805 62,925,132
  • (1)
    • Based on weighted-average number of common shares outstanding for the period.
  • (2)
    • Net realized gains or losses, net unrealized appreciation or depreciation, and income taxes can fluctuate significantly from period to period.
  • (3)
    • Includes the impact of the different share amounts as a result of calculating certain per share data based on the weighted-average basic shares outstanding during the period and certain per share data based on the shares outstanding as of a period end or transaction date.
Six Months Ended June 30,
2020 2019
(dollars in thousands)
NAV at end of period $ 1,370,944 $ 1,521,082
Average NAV $ 1,414,501 $ 1,506,543
Average outstanding debt $ 1,119,229 $ 1,025,943
Ratio of total expenses, including income tax expense, to average NAV(1)(2) 3.96 % 3.32 %
Ratio of operating expenses to average NAV(2)(3) 2.85 % 2.89 %
Ratio of operating expenses, excluding interest expense, to average NAV(2)(3) 1.13 % 1.28 %
Ratio of net investment income to average NAV(2) 4.80 % 2.36 %
Portfolio turnover ratio(2) 9.44 % 9.54 %
Total investment return(2)(4) (24.97 )% 26.15 %
Total return based on change in NAV(2)(5) (8.34 )% 5.40 %
  • (1)
    • Total expenses are the sum of operating expenses and net income tax provision/benefit. Net income tax provision/benefit includes the accrual of net deferred tax provision/benefit relating to the net

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

unrealized appreciation/depreciation on portfolio investments held in Taxable Subsidiaries and due to the change in the loss carryforwards, which are non-cash in nature and may vary significantly from period to period. Main Street is required to include net deferred tax provision/benefit in calculating its total expenses even though these net deferred taxes are not currently payable/receivable.

  • (2)
    • Not annualized.
  • (3)
    • Unless otherwise noted, operating expenses include interest, compensation, general and administrative and share-based compensation expenses, net of expenses allocated to the External Investment Manager.
  • (4)
    • Total investment return is based on the purchase of stock at the current market price on the first day and a sale at the current market price on the last day of each period reported on the table and assumes reinvestment of dividends at prices obtained by Main Street's dividend reinvestment plan during the period. The return does not reflect any sales load that may be paid by an investor.
  • (5)
    • Total return is based on change in net asset value was calculated using the sum of ending net asset value plus dividends to stockholders and other non-operating changes during the period, as divided by the beginning net asset value. Non-operating changes include any items that affect net asset value other than the net increase in net assets resulting from operations, such as the effects of stock offerings, shares issued under the DRIP and equity incentive plans and other miscellaneous items.

NOTE G—DIVIDENDS, DISTRIBUTIONS AND TAXABLE INCOME

Main Street paid regular monthly dividends of $0.205 per share for each month of January through June 2020, totaling $39.9 million, or $0.615 per share, for the three months ended June 30, 2020, and $79.6 million, or $1.230 per share, for the six months ended June 30, 2020 compared to regular monthly dividends of approximately $37.6 million, or $0.60 per share, for the three months ended June 30, 2019, and $73.7 million, or $1.185 per share, for the six months ended June 30, 2019. The second quarter 2020 regular monthly dividends represent a 2.5% increase from the regularly monthly dividends paid for the second quarter of 2019. Additionally, Main Street paid a $0.250 per share semi-annual supplemental dividend, totaling $15.8 million, in June 2019. Total dividends paid for the six months ended June 30, 2020 and 2019 equaled $1.230 and $1.435 per share, respectively.

MSCC has elected to be treated for U.S. federal income tax purposes as a RIC. MSCC's taxable income includes the taxable income generated by MSCC and certain of its subsidiaries, including the Funds, which are treated as disregarded entities for tax purposes. As a RIC, MSCC generally will not pay corporate-level U.S. federal income taxes on any net ordinary taxable income or capital gains that MSCC distributes to its stockholders. MSCC must generally distribute at least 90% of its "investment company taxable income" (which is generally its net ordinary taxable income and realized net short-term capital gains in excess of realized net long-term capital losses) and 90% of its tax-exempt income to maintain its RIC status (pass-through tax treatment for amounts distributed). As part of maintaining RIC status, undistributed taxable income (subject to a 4% non-deductible U.S. federal excise tax) pertaining to a given fiscal year may be distributed up to 12 months subsequent to the end of that fiscal year, provided such dividends are declared on or prior to the later of (i) filing of the U.S. federal income tax return for the applicable fiscal year or (ii) the fifteenth day of the ninth month following the close of the year in which such taxable income was generated.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

The determination of the tax attributes for Main Street's distributions is made annually, based upon its taxable income for the full year and distributions paid for the full year. Therefore, a determination made on an interim basis may not be representative of the actual tax attributes of distributions for a full year. Ordinary dividend distributions from a RIC do not qualify for the 20% maximum tax rate (plus a 3.8% Medicare surtax, if applicable) on dividend income from domestic corporations and qualified foreign corporations, except to the extent that the RIC received the income in the form of qualifying dividends from domestic corporations and qualified foreign corporations. The tax attributes for distributions will generally include both ordinary income and qualified dividends, but may also include either one or both of capital gains and return of capital.

Listed below is a reconciliation of "Net increase (decrease) in net assets resulting from operations" to taxable income and to total distributions declared to common stockholders for the six months ended June 30, 2020 and 2019.

Six months endedJune 30,
2020 2019
(estimated, dollarsin thousands)
Net increase (decrease) in net assets resulting from operations $ (128,068 ) $ 79,655
Book-tax difference from share-based compensation expense 322 (4,263 )
Net unrealized (appreciation) depreciation 180,684 (21,026 )
Income tax provision (benefit) (15,760 ) 6,502
Pre-tax book income not consolidated for tax purposes (952 ) (13,294 )
Book income and tax income differences, including debt origination, structuring fees, dividends, realized gains and changes in estimates 36,651 28,630
​ ​ ​ ​ ​ ​ ​ ​
Estimated taxable income(1) 72,877 76,204
Taxable income earned in prior year and carried forward for distribution in current year 29,107 41,489
Taxable income earned prior to period end and carried forward for distribution next period (35,573 ) (40,221 )
Dividend payable as of period end and paid in the following period 13,474 12,900
​ ​ ​ ​ ​ ​ ​ ​
Total distributions accrued or paid to common stockholders $ 79,885 $ 90,372
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
  • (1)
    • Main Street's taxable income for each period is an estimate and will not be finally determined until the company files its tax return for each year. Therefore, the final taxable income, and the taxable income earned in each period and carried forward for distribution in the following period, may be different than this estimate.

The Taxable Subsidiaries primarily hold certain portfolio investments for Main Street. The Taxable Subsidiaries permit Main Street to hold equity investments in portfolio companies which are "pass-through" entities for tax purposes and to continue to comply with the "source-of-income" requirements contained in the RIC tax provisions of the Code. The Taxable Subsidiaries are consolidated with Main Street for U.S. GAAP financial reporting purposes, and the portfolio investments held by the Taxable Subsidiaries are included in Main Street's consolidated financial

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

statements as portfolio investments and recorded at fair value. The Taxable Subsidiaries are not consolidated with MSCC for income tax purposes and may generate income tax expense, or benefit, and tax assets and liabilities, as a result of their ownership of certain portfolio investments. The taxable income, or loss, of the Taxable Subsidiaries may differ from their book income, or loss, due to temporary book and tax timing differences and permanent differences. The Taxable Subsidiaries are each taxed at their normal corporate tax rates based on their taxable income. The income tax expense, or benefit, if any, and the related tax assets and liabilities, of the Taxable Subsidiaries are reflected in Main Street's consolidated financial statements.

The income tax provision (benefit) for Main Street is generally composed of (i) deferred tax expense (benefit), which is primarily the result of the net activity relating to the portfolio investments held in the Taxable Subsidiaries, including changes in loss carryforwards, changes in net unrealized appreciation or depreciation and other temporary book tax differences, and (ii) current tax expense, which is primarily the result of current U.S. federal income and state taxes and excise taxes on Main Street's estimated undistributed taxable income. For the three months ended June 30, 2020, Main Street recognized a net income tax benefit of $7.5 million, principally consisting of a deferred tax benefit of $8.0 million, partially offset by a $0.6 million current tax provision, which is primarily related to a $0.4 million provision for current U.S. federal income and state taxes, as well as a $0.2 million provision for excise taxes. For the six months ended June 30, 2020, Main Street recognized a net income tax benefit of $15.8 million, principally consisting of a deferred tax benefit of $16.0 million, partially offset by a $0.3 million current tax expense, which is primarily related to a $0.7 million provision for excise taxes, partially offset by a $0.4 million benefit for current U.S. federal income and state taxes. For the three months ended June 30, 2019, Main Street recognized a net income tax provision of $3.4 million, principally consisting of a deferred tax provision of $2.5 million and a $0.9 million current tax expense, which is primarily related to current U.S. federal income and state taxes. For the six months ended June 30, 2019, Main Street recognized a net income tax provision of $6.5 million, principally consisting of a deferred tax provision of $4.8 million and a $1.7 million current tax expense, which is primarily related to a $1.3 million provision for current U.S. federal income and state taxes and a $0.4 million accrual for excise taxes.

The net deferred tax liability at June 30, 2020 was $0.4 million compared to $16.1 million at December 31, 2019, primarily related to changes in net unrealized appreciation or depreciation, changes in loss carryforwards, and other temporary book-tax differences relating to portfolio investments held by the Taxable Subsidiaries. At June 30, 2020, for U.S. federal income tax purposes, the Taxable Subsidiaries had a net operating loss carryforward from prior years which, if unused, will expire in various taxable years from 2029 through 2037. Any net operating losses generated in 2019 and future periods are not subject to expiration and will carryforward indefinitely until utilized. The timing and manner in which Main Street will utilize any loss carryforwards generated before December 31, 2019 may be limited in the future under the provisions of the Code. Additionally, the Taxable Subsidiaries have interest expense limitation carryforwards which have an indefinite carryforward.

NOTE H—COMMON STOCK

Main Street maintains a program with certain selling agents through which it can sell shares of its common stock by means of at-the-market offerings from time to time (the "ATM Program"). During the six months ended June 30, 2020, Main Street sold 907,515 shares of its common stock at a weighted-average price of $33.06 per share and raised $30.0 million of gross proceeds under the ATM Program. Net proceeds were $29.6 million after commissions to the selling agents on shares sold and

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

offering costs. As of June 30, 2020, sales transactions representing 15,000 shares had not settled and are not included in shares issued and outstanding on the face of the consolidated balance sheet, but are included in the weighted-average shares outstanding in the consolidated statement of operations and in the shares used to calculate net asset value per share. As of June 30, 2020, 7,451,635 shares remained available for sale under the ATM Program.

During the year ended December 31, 2019, Main Street sold 2,247,187 shares of its common stock at a weighted-average price of $40.05 per share and raised $90.0 million of gross proceeds under the ATM Program. Net proceeds were $88.8 million after commissions to the selling agents on shares sold and offering costs.

NOTE I—DIVIDEND REINVESTMENT PLAN ("DRIP")

Main Street's DRIP provides for the reinvestment of dividends on behalf of its stockholders, unless a stockholder has elected to receive dividends in cash. As a result, if Main Street declares a cash dividend, its stockholders who have not "opted out" of the DRIP by the dividend record date will have their cash dividend automatically reinvested into additional shares of MSCC common stock. The share requirements of the DRIP may be satisfied through the issuance of shares of common stock or through open market purchases of common stock by the DRIP plan administrator. Newly issued shares will be valued based upon the final closing price of MSCC's common stock on the valuation date determined for each dividend by Main Street's Board of Directors. Shares purchased in the open market to satisfy the DRIP requirements will be valued based upon the average price of the applicable shares purchased, before any associated brokerage or other costs. Main Street's DRIP is administered by its transfer agent on behalf of Main Street's record holders and participating brokerage firms. Brokerage firms and other financial intermediaries may decide not to participate in Main Street's DRIP but may provide a similar dividend reinvestment plan for their clients.

For the six months ended June 30, 2020, $8.1 million of the total $79.6 million in dividends paid to stockholders represented DRIP participation. During this period, the DRIP participation requirements were satisfied with the issuance of 254,951 newly issued shares. For the six months ended June 30, 2019, $9.0 million of the total $89.4 million in dividends paid to stockholders represented DRIP participation. During this period, the DRIP participation requirements were satisfied with the issuance of 229,317 newly issued shares. The shares disclosed above relate only to Main Street's DRIP and exclude any activity related to broker-managed dividend reinvestment plans.

NOTE J—SHARE-BASED COMPENSATION

Main Street accounts for its share-based compensation plans using the fair value method, as prescribed by ASC 718, Compensation—StockCompensation. Accordingly, for restricted stock awards, Main Street measured the grant date fair value based upon the market price of its common stock on the date of the grant and amortizes the fair value of the awards as share-based compensation expense over the requisite service period, which is generally the vesting term.

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MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

Main Street's Board of Directors approves the issuance of shares of restricted stock to Main Street employees pursuant to the Main Street Capital Corporation 2015 Equity and Incentive Plan (the "Equity and Incentive Plan"). These shares generally vest over a three-year period from the grant date. The fair value is expensed over the service period, starting on the grant date. The following table summarizes the restricted stock issuances approved by Main Street's Board of Directors under the Equity and Incentive Plan, net of shares forfeited, if any, and the remaining shares of restricted stock available for issuance as of June 30, 2020.

Restricted stock authorized under the plan 3,000,000
Less net restricted stock granted during:
Year ended December 31, 2015 (900 )
Year ended December 31, 2016 (260,514 )
Year ended December 31, 2017 (223,812 )
Year ended December 31, 2018 (243,779 )
Year ended December 31, 2019 (384,049 )
Six months ended June 30, 2020 (376,739 )
​ ​ ​ ​ ​
Restricted stock available for issuance as of June 30, 2020 1,510,207
​ ​ ​ ​ ​
​ ​ ​ ​ ​
​ ​ ​ ​ ​

As of June 30, 2020, the following table summarizes the restricted stock issued to Main Street's non-employee directors and the remaining shares of restricted stock available for issuance pursuant to the Main Street Capital Corporation 2015 Non-Employee Director Restricted Stock Plan. These shares are granted upon appointment or election to the board and vest on the day immediately preceding the annual meeting of stockholders following the respective grant date and are expensed over such service period.

Restricted stock authorized under the plan 300,000
Less net restricted stock granted during:
Year ended December 31, 2015 (6,806 )
Year ended December 31, 2016 (6,748 )
Year ended December 31, 2017 (5,948 )
Year ended December 31, 2018 (6,376 )
Year ended December 31, 2019 (6,008 )
Six months ended June 30, 2020 (11,463 )
​ ​ ​ ​ ​
Restricted stock available for issuance as of June 30, 2020 256,651
​ ​ ​ ​ ​
​ ​ ​ ​ ​
​ ​ ​ ​ ​

For the three months ended June 30, 2020 and 2019, Main Street recognized total share-based compensation expense of $2.8 million and $2.4 million, respectively, related to the restricted stock issued to Main Street employees and non-employee directors. For the six months ended June 30, 2020 and 2019, Main Street recognized total share-based compensation expense of $5.7 million and $4.7 million, respectively, related to the restricted stock issued to Main Street employees and non-employee directors.

As of June 30, 2020, there was $17.2 million of total unrecognized compensation expense related to Main Street's non-vested restricted shares. This compensation expense is expected to be recognized over a remaining weighted-average period of approximately 2.2 years as of June 30, 2020.

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MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

NOTE K—COMMITMENTS AND CONTINGENCIES

At June 30, 2020, Main Street had the following outstanding commitments (in thousands):

Amount
Investments with equity capital commitments that have not yet funded:
Congruent Credit Opportunities Funds
Congruent Credit Opportunities Fund II, LP $ 8,488
Congruent Credit Opportunities Fund III, LP 8,117
​ ​ ​ ​ ​
$ 16,605
Encap Energy Fund Investments
EnCap Energy Capital Fund VIII, L.P. $ 202
EnCap Energy Capital Fund IX, L.P. 281
EnCap Energy Capital Fund X, L.P. 1,485
EnCap Flatrock Midstream Fund II, L.P. 4,592
EnCap Flatrock Midstream Fund III, L.P. 409
​ ​ ​ ​ ​
$ 6,969
EIG Fund Investments $ 4,751
Freeport Fund Investments
Freeport Financial SBIC Fund LP $ 1,375
Freeport First Lien Loan Fund III LP 1,715
​ ​ ​ ​ ​
$ 3,090
Brightwood Capital Fund Investments
Brightwood Capital Fund III, LP $ 3,000
Brightwood Capital Fund IV, LP 250
​ ​ ​ ​ ​
$ 3,250
Harris Preston Fund Investments
HPEP 3, L.P. $ 2,181
LKCM Headwater Investments I, L.P. $ 2,500
UnionRock Energy Fund Investments
UnionRock Energy Fund II, LP $ 2,248
Dos Rios Partners
Dos Rios Partners, LP $ 835
Dos Rios Partners—A, LP 265
​ ​ ​ ​ ​
$ 1,100
Access Media Holdings, LLC $ 284
​ ​ ​ ​ ​
Total equity commitments $ 42,978
​ ​ ​ ​ ​

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MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

Amount
Investments with commitments to fund revolving loans that have not been fully drawn or term loans with additional commitments not yetfunded:
SI East, LLC $ 7,500
Pearl Meyer Topco LLC 5,000
Adams Publishing Group, LLC 5,000
Market Force Information, LLC 5,000
Classic H&G Holdco, LLC 4,000
AAC Holdings, Inc. 3,281
Bluestem Brands, Inc. 2,884
Fortna, Inc. 2,703
Echo US Holdings, LLC. 2,037
PPL RVs, Inc. 2,000
Cody Pools, Inc. 1,600
Chamberlin Holding LLC 1,600
Direct Marketing Solutions, Inc. 1,600
Trantech Radiator Topco, LLC 1,600
Lynx FBO Operating LLC 1,500
GS HVAM Intermediate, LLC 1,364
GRT Rubber Technologies LLC 1,340
Gamber-Johnson Holdings, LLC 1,200
LL Management, Inc.(Lab Logistics) 1,182
California Pizza Kitchen, Inc. 1,066
CompareNetworks Topco, LLC 1,000
NRI Clinical Research, LLC 1,000
Arcus Hunting LLC 867
Invincible Boat Company, LLC. 864
Analytical Systems Keco, LLC 800
CTVSH, PLLC 800
Mystic Logistics Holdings, LLC 800
DTE Enterprises RLOC 750
NinjaTrader, LLC 750
Mac Lean-Fogg Company 735
ASC Interests, LLC 700
PT Network, LLC 658
Wireless Vision Holdings, LLC 592
Jensen Jewelers of Idaho, LLC 500
Coastal Television Broadcasting Holdings LLC 500
PaySimple, Inc. 373
American Nuts, LLC 281
Dynamic Communities, LLC 250
​ ​ ​ ​ ​
Total loan commitments $ 65,677
​ ​ ​ ​ ​
Total commitments $ 108,655
​ ​ ​ ​ ​
​ ​ ​ ​ ​
​ ​ ​ ​ ​

Main Street will fund its unfunded commitments from the same sources it uses to fund its investment commitments that are funded at the time they are made (which are typically through existing cash and cash equivalents and borrowings under the Credit Facility). Main Street follows a

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MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

process to manage its liquidity and ensure that it has available capital to fund its unfunded commitments as necessary. The Company had total unrealized depreciation of $0.8 million on the outstanding unfunded commitments as of June 30, 2020.

Effective January 1, 2019, ASC 842 required that a lessee evaluate its leases to determine whether they should be classified as operating or financing leases. Main Street identified one operating lease for its office space. The lease commenced May 15, 2017 and expires January 31, 2028. It contains two five-year extension options for a final expiration date of January 31, 2038.

As Main Street classified this lease as an operating lease prior to implementation, ASC 842-10-65-1 indicates that a right-of-use asset and lease liability should be recorded based on the effective date. Main Street adopted ASC 842 effective January 1, 2019 and recorded a right-of-use asset and a lease liability as of that date. After this date, Main Street has recorded lease expense on a straight-line basis, consistent with the accounting treatment for lease expense prior to the adoption of ASC 842.

Total operating lease cost incurred by Main Street for each of the three months ended June 30, 2020 and 2019 was $0.2 million. Total operating lease cost incurred by Main Street for each of the six months ended June 30, 2020 and 2019 was $0.4 million. As of June 30, 2020, the asset related to the operating lease was $4.5 million and is included in the interest receivable and other assets balance on the consolidated balance sheet. The lease liability was $5.3 million and is included in the accounts payable and other liabilities balance on the consolidated balance sheet. As of June 30, 2020, the remaining lease term was 7.6 years and the discount rate was 4.2%.

The following table shows future minimum payments under Main Street's operating lease as of June 30, 2020 (in thousands):

For the Years Ended December 31, Amount
2020 $ 382
2021 776
2022 790
2023 804
2024 818
Thereafter 2,610
​ ​ ​ ​ ​
Total $ 6,180
​ ​ ​ ​ ​
​ ​ ​ ​ ​
​ ​ ​ ​ ​

Main Street may, from time to time, be involved in litigation arising out of its operations in the normal course of business or otherwise. Furthermore, third parties may try to impose liability on Main Street in connection with the activities of its portfolio companies. While the outcome of any current legal proceedings cannot at this time be predicted with certainty, Main Street does not expect any current matters will materially affect its financial condition or results of operations; however, there can be no assurance whether any pending legal proceedings will have a material adverse effect on Main Street's financial condition or results of operations in any future reporting period.

NOTE L—RELATED PARTY TRANSACTIONS

As discussed further in Note D, the External Investment Manager is treated as a wholly owned portfolio company of MSCC and is included as part of Main Street's Investment Portfolio. At June 30,

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MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

2020, Main Street had a receivable of approximately $4.8 million due from the External Investment Manager, which included (i) approximately $3.8 million related primarily to operating expenses incurred by MSCC or its subsidiaries as required to support the External Investment Manager's business and amounts due from the External Investment Manager to Main Street under a tax sharing agreement (see further discussion in Note D) and (ii) approximately $1.1 million of dividends declared but not paid by the External Investment Manager.

In November 2015, Main Street's Board of Directors approved and adopted the Main Street Capital Corporation Deferred Compensation Plan (the "2015 Deferred Compensation Plan"). The 2015 Deferred Compensation Plan became effective on January 1, 2016 and replaced the Deferred Compensation Plan for Non-Employee Directors previously adopted by the Board of Directors in June 2013 (the "2013 Deferred Compensation Plan"). Under the 2015 Deferred Compensation Plan, non-employee directors and certain key employees may defer receipt of some or all of their cash compensation and directors' fees, subject to certain limitations. Individuals participating in the 2015 Deferred Compensation Plan receive distributions of their respective balances based on predetermined payout schedules or other events as defined by the plan and are also able to direct investments made on their behalf among investment alternatives permitted from time to time under the plan, including phantom Main Street stock units. As of June 30, 2020, $9.9 million of compensation and directors' fees had been deferred under the 2015 Deferred Compensation Plan (including amounts previously deferred under the 2013 Deferred Compensation Plan). Of this amount, $5.0 million was deferred into phantom Main Street stock units, representing 152,633 shares of Main Street's common stock. Including phantom stock units issued through dividend reinvestment and net of any shares distributed, the phantom stock units outstanding as of June 30, 2020 represented 154,179 shares of Main Street's common stock. Any amounts deferred under the plan represented by phantom Main Street stock units will not be issued or included as outstanding on the consolidated statements of changes in net assets until such shares are actually distributed to the participant in accordance with the plan, but the related phantom stock units are included in weighted-average shares outstanding with the related dollar amount of the deferral included in total expenses in Main Street's consolidated statements of operations as earned. The dividend amounts related to additional phantom stock units are included in the statements of changes in net assets as an increase to dividends to stockholders offset by a corresponding increase to additional paid-in capital.

NOTE M—SUBSEQUENT EVENTS

During August 2020, Main Street declared regular monthly dividends of $0.205 per share for each month of October, November and December of 2020. These regular monthly dividends equal a total of $0.615 per share for the fourth quarter of 2020, unchanged from the regular monthly dividends paid in the fourth quarter of 2019. Including the regular monthly dividends declared for the third and fourth quarters of 2020, Main Street will have paid $29.60 per share in cumulative dividends since its October 2007 initial public offering.

In July 2020, Main Street announced that its External Investment Manager had entered into a definitive asset purchase agreement under which it will become the sole investment adviser and administrator to HMS Income, subject to certain closing conditions. The parties expect the transaction to be completed in the fourth quarter of 2020. Following the closing of the transaction, the External Investment Manager will replace HMS Adviser as the investment adviser and administrator to HMS Income. The base management fee rate under the External Investment Manager's proposed new investment advisory agreement with HMS Income, which has been unanimously approved by the board

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MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

of directors of HMS Income, will be reduced from 2.00% to 1.75%, with no changes to the incentive fee calculations. The consummation of the transactions contemplated by the asset purchase agreement is subject to approval of the new investment advisory agreement by stockholders of HMS Income and other customary closing conditions. Post-closing, HMS Income is expected to change its name to MSC Income Fund, Inc.

In July 2020, Main Street issued an additional $125.0 million aggregate principal amount of the 5.20% Notes at an issue price of 102.674%, for total net proceeds to Main Street, resulting from the issue price and after underwriting discounts and estimated offering expenses payable by Main Street, of approximately $127.3 million. Following the issuance of the additional $125.0 million aggregate principal amount of the 5.20% Notes in July 2020, the outstanding principal balance of the 5.20% Notes was $450.0 million. The 5.20% Notes issued in July 2020 have identical terms as, and are a part of a single series with, the 5.20% Notes issued in April 2019 and in December 2019. The aggregate net proceeds from the 5.20% Notes issuances were used to repay a portion of the borrowings outstanding under the Credit Facility.

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Schedule 12-14

MAIN STREET CAPITAL CORPORATION Consolidated Schedule of Investments In and Advances to Affiliates June 30, 2020 (dollars in thousands) (unaudited)

Company Investment(1)(10)(11) Geography Amount ofRealizedGain/(Loss) Amount ofUnrealizedGain/(Loss) Amount ofInterest,Fees orDividendsCreditedtoIncome(2) December 31,2019Fair Value GrossAdditions(3) GrossReductions(4) June 30,2020FairValue
Majority-owned investments
Café Brazil, LLC Member Units (8) $ — $ (260 ) $ 38 $ 2,440 $ — $ 260 $ 2,180
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
California Splendor Holdings LLC LIBOR Plus 8.00% (Floor 1.00%) (9) — (40 ) 354 7,104 14,270 5,840 15,534
<br> LIBOR Plus 10.00% (Floor 1.00%) (9) — (65 ) 1,689 27,801 26 65 27,762
<br> Preferred Member Units (9) — — 543 7,163 543 — 7,706
<br> Preferred Member Units (9) — (1,601 ) 125 7,382 — 1,601 5,781
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Clad-Rex Steel, LLC LIBOR Plus 9.50% (Floor 1.00%) (5) — 49 599 10,781 60 — 10,841
Member Units (5) — (1,020 ) 245 9,630 — 1,020 8,610
10% Secured Debt (5) — (11 ) 57 1,137 — 24 1,113
Member Units (5) — — — 460 — — 460
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
CMS Minerals Investments Member Units (9) — (136 ) — 1,900 — 262 1,638
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Cody Pools, Inc. LIBOR Plus 10.50% (Floor 1.75%) (8) — — 822 — 15,850 200 15,650
Preferred Member Units (8) — — 29 — 8,317 — 8,317
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
CompareNetworks Topco, LLC LIBOR Plus 11.00% (Floor 1.00%) (9) — — 517 8,288 12 350 7,950
<br> Preferred Member Units (9) — 1,070 — 3,010 1,070 — 4,080
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Direct Marketing Solutions, Inc. LIBOR Plus 11.00% (Floor 1.00%) (9) — (9 ) 990 15,707 27 487 15,247
Preferred Stock (9) — (140 ) — 20,200 — 140 20,060
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Gamber-Johnson Holdings, LLC LIBOR Plus 6.50% (Floor 2.00%) (5) — (11 ) 856 19,022 1,611 795 19,838
<br> Member Units (5) — (170 ) 2,608 53,410 — 170 53,240
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
GRT Rubber Technologies LLC LIBOR Plus 7.00% (8) — — 681 15,016 1,759 — 16,775
Member Units (8) — (2,020 ) 1,341 47,450 — 2,020 45,430
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Guerdon Modular Holdings, Inc. 16.00% Secured Debt (9) (12,776 ) 12,588 — — 12,776 12,776 —
<br> LIBOR Plus 8.50% (Floor 1.00%) (9) (993 ) 1,010 — — 993 993 —
<br> Preferred Stock (9) (1,140 ) 1,140 — — 1,140 1,140 —
<br> Common Stock (9) (2,849 ) 2,983 — — 2,849 2,849 —
<br> Warrants (9) — — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Harborside Holdings, LLC Member Units (8) — (2,000 ) — 9,560 100 2,000 7,660
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
IDX Broker, LLC 11.00% Secured Debt (9) — (42 ) 711 13,400 42 13,442 —
<br> Preferred Member Units (9) 9,337 (9,088 ) 1,193 15,040 — 15,040 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Jensen Jewelers of Idaho, LLC Prime Plus 6.75% (Floor 2.00%) (9) — (56 ) 225 4,000 6 206 3,800
Member Units (9) — (1,000 ) 111 8,270 — 1,000 7,270
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Kickhaefer Manufacturing Company, LLC 9.50% Current/2.00% PIK Secured Debt (5) — — 1,493 24,982 1,261 946 25,297
<br> Member Units (5) — (790 ) — 12,240 — 790 11,450
<br> 9.00% Secured Debt (5) — — 179 3,939 — 15 3,924
<br> Member Units (5) — — 45 1,160 — — 1,160
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Market Force Information, LLC 12.00% PIK Secured Debt (9) — (11,068 ) 304 25,316 2,885 13,946 14,255
Member Units (9) — (5,280 ) — 5,280 — 5,280 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
MH Corbin Holding LLC 13.00% Secured Debt (5) — (76 ) 592 8,890 16 236 8,670
<br> Preferred Member Units (5) — (20 ) — 20 — 20 —
<br> Preferred Member Units (5) — (1,340 ) — 4,770 — 1,340 3,430
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Mid-Columbia Lumber Products, LLC 10.00% Secured Debt (9) — — 44 1,602 148 1,750 —
12.00% Secured Debt (9) — — 119 3,644 256 3,900 —
Member Units (9) (27 ) (1,000 ) 1 — 1,027 1,027 —
9.50% Secured Debt (9) — — 30 701 19 720 —
Member Units (9) — (219 ) 20 1,640 709 219 2,130
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
MSC Adviser I, LLC Member Units (8) — (5,440 ) 1,056 74,520 — 5,440 69,080
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Mystic Logistics Holdings, LLC 10.00% Secured Debt (6) — — 404 6,253 985 279 6,959
Common Stock (6) — 1,980 — 8,410 1,980 — 10,390
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
OMi Holdings, Inc. Common Stock (8) — 1,080 543 16,950 1,080 — 18,030
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Pearl Meyer Topco LLC 12.00% Secured Debt (6) — — 1,151 — 34,663 — 34,663
Member Units (6) — — — — 13,800 800 13,000
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
PPL RVs, Inc. LIBOR Plus 8.75% PIK (Floor 0.50%) (8) — — 664 12,118 136 250 12,004
<br> Common Stock (8) — 1,210 — 9,930 1,210 — 11,140
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Table of Contents

Company Investment(1)(10)(11) Geography Amount ofRealizedGain/(Loss) Amount ofUnrealizedGain/(Loss) Amount ofInterest,Fees orDividendsCreditedtoIncome(2) December 31,2019Fair Value GrossAdditions(3) GrossReductions(4) June 30,2020FairValue
Principle Environmental, LLC (d/b.a TruHorizon Environmental Solutions) 13.00% Secured Debt (8) — 55 440 6,397 — — 6,397
Preferred Member Units (8) — (480 ) — 13,390 — 480 12,910
Warrants (8) — (20 ) — 1,090 — 20 1,070
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Quality Lease Service, LLC Member Units (7) — (3,810 ) — 9,289 301 3,810 5,780
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Trantech Radiator Topco, LLC 12.00% Secured Debt (7) — 74 557 9,102 85 320 8,867
Common Stock (7) — 3,025 58 4,655 3,025 — 7,680
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Vision Interests, Inc. 13.00% Secured Debt (9) — — 133 2,028 — — 2,028
<br> Series A Preferred Stock (9) — (629 ) — 4,089 — 629 3,460
<br> Common Stock (3,586 ) 3,296 — 409 3,296 3,705 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Ziegler's NYPD, LLC 6.50% Secured Debt (8) — (101 ) 33 1,000 — 101 899
12.00% Secured Debt (8) — — 38 625 — — 625
14.00% Secured Debt (8) — (384 ) 195 2,750 — 384 2,366
Warrants (8) — — — — — — —
Preferred Member Units (8) — (130 ) — 1,269 — 130 1,139
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Other controlled investments
Access Media Holdings, LLC 10.00% PIK Secured Debt (5) — (2,450 ) 25 6,387 — 2,450 3,937
Preferred Member Units (5) — — — (284 ) — — (284 )
Member Units (5) — — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Analytical Systems Keco, LLC LIBOR Plus 10.00% (Floor 2.00%) (8) — — 366 5,210 36 270 4,976
<br> Preferred Member Units (8) — 690 — 3,200 690 — 3,890
<br> Warrants (8) — 194 — 316 194 — 510
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
ASC Interests, LLC 13.00% Secured Debt (8) — — 115 1,639 — 33 1,606
Member Units (8) — (240 ) — 1,290 — 240 1,050
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
ATS Workholding, LLC 5.00% Secured Debt (9) — (619 ) 187 4,521 63 619 3,965
<br> Preferred Member Units (9) — (939 ) — 939 — 939 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Bond-Coat, Inc. 15.00% Secured Debt — — 1,399 11,473 123 11,596 —
Common Stock (8) — (1,470 ) — 8,300 — 1,470 6,830
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Brewer Crane Holdings, LLC LIBOR Plus 10.00% (Floor 1.00%) (9) — — 518 8,989 10 248 8,751
<br> Preferred Member Units (9) — — 50 4,280 — — 4,280
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Bridge Capital Solutions Corporation 13.00% Secured Debt (6) — — 868 7,797 288 — 8,085
Warrants (6) — (180 ) — 3,500 — 180 3,320
13.00% Secured Debt (6) — — 67 996 1 — 997
Preferred Member Units (6) — — 50 1,000 — — 1,000
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
CBT Nuggets, LLC Member Units (9) — (4,790 ) 454 50,850 — 4,790 46,060
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Centre Technologies Holdings, LLC LIBOR Plus 10.00% (Floor 2.00%) (8) — — 743 12,136 13 306 11,843
Preferred Member Units (8) — — 60 5,840 — — 5,840
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Chamberlin Holding LLC LIBOR Plus 10.00% (Floor 1.00%) (8) — (17 ) 1,054 17,773 17 17 17,773
<br> Member Units (8) — 110 1,485 24,040 110 — 24,150
<br> Member Units (8) — (530 ) 34 1,450 — 530 920
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Charps, LLC 15.00% Secured Debt (5) — — 152 2,000 — — 2,000
Preferred Member Units (5) — 1,210 311 6,920 1,210 — 8,130
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Copper Trail Fund Investments LP Interests (CTMH, LP) (9) — — — 872 — 110 762
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Datacom, LLC 8.00% Secured Debt (8) — — — 1,615 — — 1,615
10.50% PIK Secured Debt (8) — — — 10,142 — — 10,142
Class A Preferred Member Units (8) — — — — — — —
Class B Preferred Member Units (8) — — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Digital Products Holdings LLC LIBOR Plus 10.00% (Floor 1.00%) (5) — 350 1,123 18,452 373 660 18,165
<br> Preferred Member Units (5) — (579 ) 100 5,174 — 579 4,595
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Garreco, LLC LIBOR Plus 8.00% (Floor 1.00%, Ceiling 1.50%) (8) — — 220 4,515 4 — 4,519
Member Units (8) — (860 ) — 2,560 — 860 1,700
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Gulf Manufacturing, LLC Member Units (8) — (2,630 ) 119 7,430 — 2,630 4,800
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Gulf Publishing Holdings, LLC LIBOR Plus 9.50% (Floor 1.00%), Current Coupon 5.25% / 5.25% PIK (8) — — 14 280 3 40 243
6.25% Current / 6.25% PIK (8) — (1,091 ) 809 12,493 214 1,091 11,616
Member Units (8) — (2,420 ) — 2,420 — 2,420 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Harris Preston Fund Investments LP Interests (2717 MH, L.P.) (8) — (180 ) — 3,157 — 180 2,977
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Harrison Hydra-Gen, Ltd. Common Stock (8) — (2,330 ) 104 7,970 — 2,330 5,640
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
J&J Services, Inc. 11.50% Secured Debt (7) — 135 1,053 17,430 170 2,400 15,200
<br> Preferred Stock (7) — 2,815 — 7,160 2,815 75 9,900
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
KBK Industries, LLC Member Units (5) — (2,330 ) 437 15,470 — 2,330 13,140
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
NAPCO Precast, LLC Member Units (8) — (3,830 ) 4 14,760 — 3,830 10,930
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
NexRev LLC 11.00% PIK Secured Debt (8) — (1,701 ) 913 17,469 182 1,919 15,732
Preferred Member Units (8) — (6,310 ) — 6,310 — 6,310 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
NRI Clinical Research, LLC 10.50% Secured Debt (9) — (17 ) 394 5,981 1,536 517 7,000
<br> Warrants (9) — 160 — 1,230 160 — 1,390
<br> Member Units (9) — 333 377 4,988 710 377 5,321
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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Company Investment(1)(10)(11) Geography Amount ofRealizedGain/(Loss) Amount ofUnrealizedGain/(Loss) Amount ofInterest,Fees orDividendsCreditedtoIncome(2) December 31,2019Fair Value GrossAdditions(3) GrossReductions(4) June 30,2020FairValue
NRP Jones, LLC 12.00% Secured Debt (5) — — 387 6,376 — — 6,376
Member Units (5) — (1,590 ) 25 4,710 — 1,590 3,120
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
NuStep, LLC 12.00% Secured Debt (5) — — 1,218 19,703 21 160 19,564
<br> Preferred Member Units (5) — — — 10,200 — — 10,200
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Pegasus Research Group, LLC Member Units (8) — 1,790 491 8,170 1,790 — 9,960
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
River Aggregates, LLC Zero Coupon Secured Debt (8) — — — 722 — — 722
<br> Member Units (8) — 1,170 187 4,990 1,170 — 6,160
<br> Member Units (8) — 151 — 3,169 151 — 3,320
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Tedder Industries, LLC 12.00% Secured Debt (9) — — 41 640 — — 640
12.00% Secured Debt (9) — — 1,009 16,272 14 — 16,286
Preferred Member Units (9) — — — 8,136 — — 8,136
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
UnionRock Energy Fund II, LP LP Interests (9) — — — — 2,894 — 2,894
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Other
Amounts related to investments transferred to or from other 1940 Act classification during the period (7,832 ) 4,656 4 4,564 — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total Control investments $ (19,866 ) $ (42,235 ) $ 38,800 $ 1,032,721 $ 143,295 $ 163,313 $ 1,008,139
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Affiliate Investments
AFG Capital Group, LLC 10.00% Secured Debt (8) $ — $ — $ 37 $ 838 $ — $ 174 $ 664
Preferred Member Units (8) — (10 ) — 5,180 — 10 5,170
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
American Trailer Rental Group LLC LIBOR Plus 7.25% (Floor 1.00%) (5) — (182 ) 1,119 27,087 182 27,269 —
<br> Member Units (5) — 779 — 8,540 4,520 — 13,060
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
BBB Tank Services, LLC LIBOR Plus 11.00% (Floor 1.00%) (8) — (51 ) 335 4,698 37 51 4,684
Preferred Member Units (8) — — 10 131 10 — 141
Member Units (8) — (80 ) — 290 — 80 210
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Boccella Precast Products LLC LIBOR Plus 10.00% (Floor 1.00%) (6) — (138 ) 982 13,244 138 13,382 —
<br> Member Units (6) — (290 ) 369 6,270 — 290 5,980
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Buca C, LLC LIBOR Plus 9.25% (Floor 1.00%) (7) — (1,714 ) 1,036 18,794 24 1,714 17,104
Preferred Member Units (7) — (4,005 ) 69 4,701 69 4,005 765
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
CAI Software LLC 12.50% Secured Debt (6) — 108 996 9,160 19,500 16 28,644
<br> Member Units (6) — 369 10 5,210 720 — 5,930
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Chandler Signs Holdings, LLC Class A Units (8) — (200 ) (91 ) 2,740 — 200 2,540
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Charlotte Russe, Inc Common Stock (9) — — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Classic H&G Holdings, LLC 12.00% Secured Debt (6) — — 1,518 — 25,753 — 25,753
Preferred Member Units (6) — — — — 5,760 — 5,760
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Congruent Credit Opportunities Funds LP Interests (Fund II) (8) — — — 855 — — 855
<br> LP Interests (Fund III) (8) — (399 ) 394 13,915 — 1,411 12,504
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Copper Trail Fund Investments LP Interests (Copper Trail Energy Fund I, LP) (9) — (791 ) 594 2,362 — 540 1,822
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Dos Rios Partners LP Interests (Dos Rios Partners, LP) (8) — (504 ) — 7,033 759 504 7,288
<br> LP Interests (Dos Rios Partners—A, LP) (8) — (160 ) — 2,233 241 160 2,314
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
East Teak Fine Hardwoods, Inc. Common Stock (7) — (100 ) 4 400 — 100 300
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
EIG Fund Investments LP Interests (EIG Global Private Debt fund-A, L.P.) (8) 6 (111 ) 69 720 94 219 595
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Freeport Financial Funds LP Interests (Freeport Financial SBIC Fund LP) (5) — (624 ) — 5,778 — 624 5,154
LP Interests (Freeport First Lien Loan Fund III LP) (5) — 46 80 9,696 1,035 160 10,571
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Fuse, LLC 12.00% Secured Debt (9) — (338 ) 118 1,939 — 338 1,601
<br> Common Stock (9) — — — 256 — — 256
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Harris Preston Fund Investments LP Interests (HPEP 3, L.P.) (8) — — — 2,474 345 — 2,819
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Hawk Ridge Systems, LLC LIBOR Plus 6.00% (Floor 1.00%) (9) — — 25 600 — — 600
<br> 11.00% Secured Debt (9) — (15 ) 760 13,400 15 15 13,400
<br> Preferred Member Units (9) — (580 ) 45 7,900 — 580 7,320
<br> Preferred Member Units (9) — (30 ) — 420 — 30 390
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Houston Plating and Coatings, LLC 8.00% Unsecured Convertible Debt (8) — (1,000 ) 121 4,260 — 1,000 3,260
Member Units (8) — (3,110 ) 66 10,330 — 3,110 7,220
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
I-45 SLF LLC Member Units (8) — (3,654 ) 1,258 14,407 3,200 3,654 13,953
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
L.F. Manufacturing Holdings, LLC Preferred Member Units (8) — — 6 81 6 — 87
Member Units (8) — — — 2,050 — — 2,050
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
OnAsset Intelligence, Inc. 12.00% PIK Secured Debt (8) — — 399 6,474 399 — 6,873
<br> 10.00% PIK Secured Debt (8) — — 3 58 3 — 61
<br> Preferred Stock (8) — — — — — — —
<br> Warrants (8) — — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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Company Investment(1)(10)(11) Geography Amount ofRealizedGain/(Loss) Amount ofUnrealizedGain/(Loss) Amount ofInterest,Fees orDividendsCreditedtoIncome(2) December 31,2019Fair Value GrossAdditions(3) GrossReductions(4) June 30,2020FairValue
PCI Holding Company, Inc. 12.00% Current Secured Debt (9) — — 689 11,356 — — 11,356
Preferred Stock (9) — 1,450 — 2,680 1,450 — 4,130
Preferred Stock (9) — — — 4,350 — — 4,350
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Rocaceia, LLC (Quality Lease and Rental Holdings, LLC) 12.00% Secured Debt (8) — — — — 241 241 —
<br> Preferred Member Units (8) — — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Salado Stone Holdings, LLC Class A Preferred Units (8) — (140 ) — 570 — 140 430
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
SI East, LLC 9.50% Current, Secured Debt (7) — (36 ) 1,633 32,963 36 36 32,963
<br> Preferred Member Units (7) — 1,110 534 8,200 1,110 — 9,310
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Slick Innovations, LLC 14.00% Current, Secured Debt (6) — — 468 6,197 19 80 6,136
Warrants (6) — 10 — 290 10 — 300
Common Stock (6) — 50 — 1,080 50 — 1,130
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
UniTek Global Services, Inc. LIBOR Plus 6.50% (Floor 1.00%) (6) — (283 ) 121 2,962 14 299 2,677
<br> Preferred Stock (6) — (2,680 ) — 2,684 — 2,680 4
<br> Preferred Stock (6) — (212 ) 212 2,282 212 212 2,282
<br> Preferred Stock (6) — 448 118 1,889 944 — 2,833
<br> Preferred Stock (6) — (3,009 ) — 3,667 — 3,009 658
<br> Common Stock (6) — — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Universal Wellhead Services Holdings, LLC Preferred Member Units (8) — (560 ) — 800 — 560 240
Member Units (8) — — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Volusion, LLC 11.50% Secured Debt (8) — (181 ) 1,248 19,352 72 181 19,243
<br> 8.00% Unsecured Convertible Debt (8) — — 16 291 — — 291
<br> Preferred Member Units (8) — (8,322 ) — 14,000 — 8,322 5,678
<br> Warrants (8) — (150 ) — 150 — 150 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Other
Amounts related to investments transferred to or from other 1940 Act classification during the period (241 ) — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total Affiliate investments $ (235 ) $ (29,289 ) $ 15,371 $ 330,287 $ 66,968 $ 75,546 $ 321,709
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
  • (1)
    • The principal amount, the ownership detail for equity investments and if the investment is income producing is included in the consolidated schedule of investments.
  • (2)
    • Represents the total amount of interest, fees and dividends credited to income for the portion of the period for which an investment was included in Control or Affiliate categories, respectively. For investments transferred between Control and Affiliate categories during the period, any income or investment balances related to the time period it was in the category other than the one shown at period end is included in "Amounts from investments transferred from other 1940 Act classifications during the period."
  • (3)
    • Gross additions include increases in the cost basis of investments resulting from new portfolio investments, follow-on investments and accrued PIK interest, and the exchange of one or more existing securities for one or more new securities. Gross additions also include net increases in unrealized appreciation or net decreases in net unrealized depreciation as well as the movement of an existing portfolio company into this category and out of a different category.
  • (4)
    • Gross reductions include decreases in the cost basis of investments resulting from principal repayments or sales and the exchange of one or more existing securities for one or more new securities. Gross reductions also include net increases in net unrealized depreciation or net decreases in unrealized appreciation as well as the movement of an existing portfolio company out of this category and into a different category.
  • (5)
    • Portfolio company located in the Midwest region as determined by location of the corporate headquarters. The fair value as of June 30, 2020 for control investments located in this region was $236,976. This represented 17.3% of net assets as of June 30, 2020. The fair value as of June 30, 2020 for affiliate investments located in this region was $28,785. This represented 2.1% of net assets as of June 30, 2020.
  • (6)
    • Portfolio company located in the Northeast region as determined by location of the corporate headquarters. The fair value as of June 30, 2020 for control investments located in this region was $78,414. This represented 5.7% of net assets as of June 30, 2020. The fair value as of June 30,

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2020 for affiliate investments located in this region was $88,087. This represented 6.4% of net assets as of June 30, 2020.

  • (7)
    • Portfolio company located in the Southeast region as determined by location of the corporate headquarters. The fair value as of June 30, 2020 for control investments located in this region was $47,427. This represented 3.5% of net assets as of June 30, 2020. The fair value as of June 30, 2020 for affiliate investments located in this region was $60,442. This represented 4.4% of net assets as of June 30, 2020.
  • (8)
    • Portfolio company located in the Southwest region as determined by location of the corporate headquarters. The fair value as of June 30, 2020 for control investments located in this region was $401,136. This represented 29.3% of net assets as of June 30, 2020. The fair value as of June 30, 2020 for affiliate investments located in this region was $99,170. This represented 7.2% of net assets as of June 30, 2020.
  • (9)
    • Portfolio company located in the West region as determined by location of the corporate headquarters. The fair value as of June 30, 2020 for control investments located in this region was $244,186. This represented 17.8% of net assets as of June 30, 2020. The fair value as of June 30, 2020 for affiliate investments located in this region was $45,225. This represented 3.3% of net assets as of June 30, 2020.
  • (10)
    • All of the Company's portfolio investments are generally subject to restrictions on resale as "restricted securities," unless otherwise noted.
  • (11)
    • This schedule should be read in conjunction with the consolidated schedule of investments and notes to the consolidated financial statements. Supplemental information can be located within the schedule of investments including end of period interest rate, preferred dividend rate, maturity date, investments not paid currently in cash and investments whose value was determined using significant unobservable inputs.
  • (12)
    • Investment has an unfunded commitment as of December 31, 2019 (see Note K). The fair value of the investment includes the impact of the fair value of any unfunded commitments.

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Schedule 12-14

MAIN STREET CAPITAL CORPORATION Consolidated Schedule of Investments in and Advances to Affiliates June 30, 2019 (dollars in thousands) (unaudited)

Company Investment(1)(10)(11) Geography AmountofRealizedGain/(Loss) AmountofUnrealizedGain/(Loss) AmountofInterest,Fees orDividendsCreditedtoIncome(2) December 31,2018Fair Value GrossAdditions(3) GrossReductions(4) June 30,2019FairValue
Majority-owned investments
Café Brazil, LLC Member Units (8) $ — $ (730 ) $ 131 $ 4,780 $ — $ 730 $ 4,050
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
California Splendor Holdings LLC LIBOR Plus 8.00% (Floor 1.00%) (9) — — 518 10,928 7,757 4,750 13,935
<br> LIBOR Plus 10.00% (Floor 1.00%) (9) — — 1,817 27,755 22 — 27,777
<br> Preferred Member Units (9) — (2,363 ) 125 9,745 — 2,363 7,382
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Clad-Rex Steel, LLC LIBOR Plus 9.00% (Floor 1.00%) (5) — (14 ) 709 12,080 14 414 11,680
Member Units (5) — (340 ) 125 10,610 — 340 10,270
10% Secured Debt (5) — — 58 1,161 — 11 1,150
Member Units (5) — — — 350 — — 350
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
CMS Minerals Investments Member Units (9) — (359 ) 35 2,580 — 573 2,007
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
CompareNetworks Topco, LLC LIBOR Plus 11.00% (Floor 1.00%) (9) — — 32 — 242 — 242
LIBOR Plus 11.00% (Floor 1.00%) (9) — — 641 — 8,669 — 8,669
Preferred Member Units (9) — — 2 — 1,975 — 1,975
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Direct Marketing Solutions, Inc. LIBOR Plus 11.00% (Floor 1.00%) (9) — — 1,234 17,848 19 470 17,397
<br> Preferred Stock (9) — 1,250 — 14,900 1,250 — 16,150
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Gamber-Johnson Holdings, LLC LIBOR Plus 7.50% (Floor 2.00%) (5) — (31 ) 1,071 21,486 31 1,695 19,822
Member Units (5) — — 1,516 45,460 — — 45,460
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
GRT Rubber Technologies LLC LIBOR Plus 7.00% (8) — (11 ) 550 9,740 3,528 11 13,257
<br> Member Units (8) — 7,070 5,456 39,060 7,070 — 46,130
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Guerdon Modular Holdings, Inc. 16% Secured Debt (9) — (1,528 ) 433 12,002 16 1,528 10,490
LIBOR Plus 8.50% (Floor 1.00%) (9) — — — — 464 — 464
Preferred Stock (9) — — — — — — —
Common Stock (9) (7 ) — — — — — —
Warrants (9) — — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Harborside Holdings, LLC Member Units (8) — (70 ) — 9,500 100 70 9,530
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
IDX Broker, LLC 11.5% Secured Debt (9) — (23 ) 842 14,350 23 373 14,000
Preferred Member Units (9) — 900 207 13,520 900 — 14,420
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Jensen Jewelers of Idaho, LLC Prime Plus 6.75% (Floor 2.00%) (9) — (11 ) 206 3,355 11 311 3,055
<br> Member Units (9) — 1,720 155 5,090 1,720 — 6,810
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Kickhaefer Manufacturing Company, LLC 11.5% Secured Debt (5) — — 1,646 28,775 31 1,864 26,942
Member Units (5) — — — 12,240 — — 12,240
9.0% Secured Debt (5) — — 178 3,970 — 17 3,953
Member Units (5) — — 71 992 — — 992
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Lamb Ventures, LLC LIBOR Plus 5.75% (8) — (2 ) 10 — 402 202 200
<br> 11% Secured Debt (8) — (4 ) 580 8,339 3,504 4 11,839
<br> Preferred Equity (8) — — — 400 — — 400
<br> Member Units (8) — 4,050 394 7,440 4,440 — 11,880
<br> 9.5% Secured Debt (8) — — 21 432 — — 432
<br> Member Units (8) — (80 ) 73 630 — 80 550
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Market Force Information, LLC LIBOR Plus 7.00% (Floor 1.00%) (9) — — 26 200 1,509 200 1,509
LIBOR Plus 11.00% (Floor 1.00%) (9) — — 1,583 22,624 20 — 22,644
Member Units (9) — (2,070 ) — 13,100 — 2,070 11,030
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
MH Corbin Holding LLC 5% Current / 5% PIK Secured Debt (5) — 477 984 11,733 1,333 4,400 8,666
<br> Preferred Member Units (5) — (980 ) — 1,000 — 980 20
<br> Preferred Member Units (5) — 370 — — 4,770 — 4,770
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Mid-Columbia Lumber Products, LLC 10% Secured Debt (9) — — 90 1,746 2 — 1,748
12% Secured Debt (9) — — 244 3,880 9 — 3,889
Member Units (9) — (3,160 ) 3 3,860 — 3,160 700
9.5% Secured Debt (9) — — 35 746 — 23 723
Member Units (9) — 170 34 1,470 170 — 1,640
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
MSC Adviser I, LLC Member Units (8) — 3,830 2,881 65,748 3,830 — 69,578
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Mystic Logistics Holdings, LLC 12% Secured Debt (6) — — 469 7,506 23 455 7,074
Common Stock (6) — 1,880 — 210 1,880 — 2,090
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
PPL RVs, Inc. LIBOR Plus 7.00% (Floor 0.50%) (8) — (94 ) 754 15,100 20 1,099 14,021
<br> Common Stock (8) — (1,330 ) — 10,380 — 1,330 9,050
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Principle Environmental, LLC 13% Secured Debt (8) — (35 ) 484 7,477 35 1,115 6,397
(d/b.a TruHorizon Environmental Solutions) Preferred Member Units (8) — 2,510 1,440 13,090 2,510 — 15,600
Warrants (8) — 380 — 780 380 — 1,160
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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Company Investment(1)(10)(11) Geography AmountofRealizedGain/(Loss) AmountofUnrealizedGain/(Loss) AmountofInterest,Fees orDividendsCreditedtoIncome(2) December 31,2018Fair Value GrossAdditions(3) GrossReductions(4) June 30,2019FairValue
Quality Lease Service, LLC Zero Coupon Secured Debt (7) (741 ) 891 — 6,450 891 7,341 —
<br> Member Units (7) — — — 3,809 6,770 — 10,579
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
The MPI Group, LLC 9% Secured Debt (7) — 103 132 2,582 103 — 2,685
Series A Preferred Units (7) (8 ) (430 ) — 440 — 430 10
Warrants (7) — — — — — — —
Member Units (7) — — 63 2,479 — — 2,479
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Trantech Radiator Topco, LLC 12% Secured Debt (7) — — 350 — 10,282 — 10,282
<br> Common Stock (7) — — 10 — 4,655 — 4,655
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Vision Interests, Inc. 13% Secured Debt (9) — — 136 2,153 — 125 2,028
Series A Preferred Stock (9) — 350 — 3,740 350 — 4,090
Common Stock (9) — 129 — 280 129 — 409
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Ziegler's NYPD, LLC 6.5% Secured Debt (8) — — 34 1,000 — 1 999
<br> 12% Secured Debt (8) — — 26 425 200 — 625
<br> 14% Secured Debt (8) — — 194 2,750 — — 2,750
<br> Warrants (8) — — — — — — —
<br> Preferred Member Units (8) — (239 ) — 1,249 — 239 1,010
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Other controlled investments
Access Media Holdings, LLC 10% PIK Secured Debt (5) — (955 ) 25 8,558 — 955 7,603
<br> Preferred Member Units (12) (5) — — — (284 ) — — (284 )
<br> Member Units (5) — — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
ASC Interests, LLC 11% Secured Debt (8) — — 99 1,622 8 — 1,630
Member Units (8) — (80 ) — 1,370 — 80 1,290
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
ATS Workholding, LLC 5% Secured Debt (9) — (28 ) 179 4,390 122 93 4,419
<br> Preferred Member Units (9) — (1,708 ) — 3,726 — 1,708 2,018
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Bond-Coat, Inc. 15% Secured Debt (8) — (229 ) 835 11,596 52 229 11,419
Common Stock (8) — (2,020 ) — 9,370 — 2,020 7,350
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Brewer Crane Holdings, LLC LIBOR Plus 10.00% (Floor 1.00%) (9) — — 597 9,467 9 248 9,228
<br> Preferred Member Units (9) — — 60 4,280 — — 4,280
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Bridge Capital Solutions Corporation 13% Secured Debt (6) — — 687 6,221 197 — 6,418
Warrants (6) — (470 ) — 4,020 — 470 3,550
13% Secured Debt (6) — (6 ) 66 1,000 1 6 995
Preferred Member Units (6) — — 50 1,000 — — 1,000
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
CBT Nuggets, LLC Member Units (9) — (2,020 ) 300 61,610 — 2,020 59,590
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Centre Technologies Holdings, LLC LIBOR Plus 9.00% (Floor 2.00%) (8) — — 861 — 12,127 — 12,127
Preferred Member Units (8) — — 60 — 5,840 — 5,840
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Chamberlin Holding LLC LIBOR Plus 10.00% (Floor 1.00%) (8) — — 1,293 20,028 27 1,327 18,728
<br> Member Units (8) — 4,050 588 18,940 4,050 — 22,990
<br> Member Units (8) — — 11 732 — — 732
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Charps, LLC 11.50% Secured Debt (5) — (83 ) 675 11,888 1,695 13,583 —
15% Secured Debt (5) — — 22 — 2,000 — 2,000
Preferred Member Units (5) — 2,360 261 2,270 2,360 — 4,630
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Copper Trail Fund Investments LP Interests (CTMH, LP) (9) — — 5 872 — — 872
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Datacom, LLC 8% Secured Debt (8) — (136 ) — 1,690 — 136 1,554
10.50% PIK Secured Debt (8) — — — 9,786 — — 9,786
Class A Preferred Member Units (8) — — — — — — —
Class B Preferred Member Units (8) — — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Digital Products Holdings LLC LIBOR Plus 10.00% (Floor 1.00%) (5) — — 1,620 25,511 26 660 24,877
<br> Preferred Member Units (5) — (501 ) 100 8,466 — 501 7,965
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Garreco, LLC LIBOR Plus 8.00% (Floor 1.00%, Ceiling 1.50%) (8) — — 241 5,099 10 422 4,687
Member Units (8) — (90 ) 28 2,590 — 90 2,500
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Gulf Manufacturing, LLC Member Units (8) — (390 ) 609 11,690 — 390 11,300
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Gulf Publishing Holdings, LLC LIBOR Plus 9.50% (Floor 1.00%) (8) — — 6 — 320 — 320
12.5% Secured Debt (8) — — 804 12,594 14 130 12,478
Member Units (8) — 210 — 4,120 210 — 4,330
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Harris Preston Fund Investments LP Interests (2717 MH, L.P.) (8) — — — 1,133 1,195 500 1,828
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Harrison Hydra-Gen, Ltd. Common Stock (8) — 530 247 8,070 530 — 8,600
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
KBK Industries, LLC Member Units (5) — 3,300 860 8,610 3,300 — 11,910
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
NAPCO Precast, LLC LIBOR Plus 8.50% (8) — (11 ) 123 11,475 11 11,486 —
Member Units (8) — 1,010 1,890 13,990 1,010 — 15,000
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
NexRev LLC 11% Secured Debt (8) — — 975 17,288 16 217 17,087
<br> Preferred Member Units (8) — (1,010 ) 155 7,890 — 1,010 6,880
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
NRI Clinical Research, LLC LIBOR Plus 6.75% (Floor 1.50%) (9) — (16 ) 8 — 200 117 83
14% Secured Debt (9) — — 486 6,685 16 16 6,685
Warrants (9) — — — 660 130 — 790
Member Units (9) — 740 32 2,478 610 — 3,088
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
NRP Jones, LLC 12% Secured Debt (5) — — 385 6,376 — — 6,376
<br> Member Units (5) — 300 120 5,960 300 — 6,260
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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Company Investment(1)(10)(11) Geography AmountofRealizedGain/(Loss) AmountofUnrealizedGain/(Loss) AmountofInterest,Fees orDividendsCreditedtoIncome(2) December 31,2018Fair Value GrossAdditions(3) GrossReductions(4) June 30,2019FairValue
NuStep, LLC 12% Secured Debt (5) — — 1,265 20,458 20 — 20,478
Preferred Member Units (5) — — — 10,200 — — 10,200
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
OMi Holdings, Inc. Common Stock (8) — 780 960 16,020 780 — 16,800
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Pegasus Research Group, LLC Member Units (8) — (880 ) — 7,680 — 880 6,800
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
River Aggregates, LLC Zero Coupon Secured Debt (8) — — — 722 — 1 721
<br> Member Units (8) — — — 4,610 — — 4,610
<br> Member Units (8) — — — 2,930 — 1 2,929
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Tedder Industries, LLC 12%, Secured Debt (9) — — 41 480 320 — 800
12%, Secured Debt (9) — — 1,004 16,246 13 — 16,259
Preferred Member Units (9) — — — 7,476 — — 7,476
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Other
Amounts related to investments transferred to or from other 1940 Act classification during the period (187 ) 260 (133 ) 5,809 — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total Control investments $ (943 ) $ 15,083 $ 47,308 $ 1,004,993 $ 119,578 $ 78,070 $ 1,040,692
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Affiliate Investments
AFG Capital Group, LLC Warrants (8) $ 781 $ (691 ) $ — $ 950 $ — $ 950 $ —
<br> 10% Secured Debt (8) — — 19 — 1,040 29 1,011
<br> Preferred Member Units (8) — 570 (40 ) 3,980 570 — 4,550
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
American Trailer Rental Group LLC LIBOR Plus 7.25% (Floor 1.00%) (5) — 181 1,295 20,312 4,888 — 25,200
Member Units (5) — 1,250 — 5,780 1,250 — 7,030
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Barfly Ventures, LLC 12% Secured Debt (5) — (155 ) 632 10,018 17 155 9,880
<br> Options (5) — — — 940 — — 940
<br> Warrants (5) — — — 410 — — 410
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
BBB Tank Services, LLC LIBOR Plus 11% (Floor 1.00%) (8) — — 330 3,833 672 — 4,505
Preferred Member Units (8) — — 9 113 9 — 122
Member Units (8) — (110 ) — 230 — 110 120
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Boccella Precast Products LLC LIBOR Plus 10% (Floor 1.00%) (6) — (41 ) 1,167 15,724 441 1,961 14,204
<br> Member Units (6) — 184 75 5,080 280 — 5,360
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Boss Industries, LLC Preferred Member Units (5) 3,771 (3,930 ) 611 6,176 — 6,176 —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Buca C, LLC LIBOR Plus 9.25% (Floor 1.00%) (7) — (187 ) 1,142 19,038 21 287 18,772
<br> Preferred Member Units (7) — — 130 4,431 130 — 4,561
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
CAI Software LLC 12% Secured Debt (6) — (16 ) 662 10,880 16 696 10,200
Member Units (6) — 2,223 — 2,717 2,223 — 4,940
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Chandler Signs Holdings, LLC 12% Secured Debt/1.00% PIK (8) — (4 ) 302 4,546 27 4 4,569
<br> Class A Units (8) — (100 ) — 2,120 — 100 2,020
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Charlotte Russe, Inc 8.50% Secured Debt (9) (7,012 ) 4,003 — 3,930 4,003 7,933 —
Common Stock (9) — — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Condit Exhibits, LLC Member Units (9) — — 107 1,950 — — 1,950
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Congruent Credit Opportunities Funds LP Interests (Fund II) (8) — — — 855 — — 855
LP Interests (Fund III) (8) — 177 532 17,468 177 367 17,278
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Copper Trail Fund Investments LP Interests (Copper Trail Energy Fund I, LP) (9) — 86 5 4,170 86 1,184 3,072
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Dos Rios Partners LP Interests (Dos Rios Partners, LP) (8) — (580 ) — 7,153 — 580 6,573
LP Interests (Dos Rios Partners—A, LP) (8) — (184 ) — 2,271 — 184 2,087
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
East Teak Fine Hardwoods, Inc. Common Stock (7) — — 8 560 — — 560
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
EIG Fund Investments LP Interests (EIG Global Private Debt fund—A, L.P.) (8) 8 — 39 505 217 45 677
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Freeport Financial Funds LP Interests (Freeport Financial SBIC Fund LP) (5) — 258 — 5,399 258 — 5,657
<br> LP Interests (Freeport First Lien Loan Fund III LP) (5) — (85 ) 510 10,980 799 1,484 10,295
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Fuse, LLC 12% Secured Debt (9) — — — — 1,939 — 1,939
Common Stock (9) — — — — 256 — 256
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Harris Preston Fund Investments LP Interests (HPEP 3, L.P.) (8) — — — 1,733 500 — 2,233
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Hawk Ridge Systems, LLC 10.0% Secured Debt (9) — (20 ) 727 14,300 20 920 13,400
Preferred Member Units (9) — — 247 7,260 — — 7,260
Preferred Member Units (9) — — — 380 — — 380
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Houston Plating and Coatings, LLC 8% Unsecured Convertible Debt (8) — 240 121 3,720 240 — 3,960
<br> Member Units (8) — 1,280 240 8,330 1,280 — 9,610
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
I-45 SLF LLC Member Units (8) — (505 ) 1,718 15,627 800 505 15,922
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
L.F. Manufacturing Holdings, LLC Preferred Member Units (8) — — 5 — 76 — 76
<br> Member Units (8) — (120 ) — 2,060 — 120 1,940
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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Company Investment(1)(10)(11) Geography AmountofRealizedGain/(Loss) AmountofUnrealizedGain/(Loss) AmountofInterest,Fees orDividendsCreditedtoIncome(2) December 31,2018Fair Value GrossAdditions(3) GrossReductions(4) June 30,2019FairValue
OnAsset Intelligence, Inc. 12% PIK Secured Debt (8) — — 355 5,743 352 — 6,095
10% PIK Secured Debt (8) — — — 53 2 — 55
Preferred Stock (8) — — — — — — —
Warrants (8) — — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
PCI Holding Company, Inc. 12% Current Secured Debt (9) — — 792 11,908 98 650 11,356
<br> Preferred Stock (9) — (140 ) — 340 — 140 200
<br> Preferred Stock (9) — 870 — 3,480 870 — 4,350
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Rocaceia, LLC (Quality Lease and Rental 12% Secured Debt (8) — — — 250 — — 250
Holdings, LLC) Preferred Member Units (8) — — — — — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Salado Stone Holdings, LLC Class A Preferred Units (8) — (30 ) — 1,040 — 30 1,010
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
SI East, LLC 10.25% Current, Secured Debt (7) — 324 1,871 34,885 365 563 34,687
Preferred Member Units (7) — 730 117 6,000 730 — 6,730
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Slick Innovations, LLC 14% Current, Secured Debt (6) — — 523 6,959 43 800 6,202
<br> Warrants (6) — 59 — 181 59 — 240
<br> Member Units (6) — 190 — 700 190 — 890
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
UniTek Global Services, Inc. LIBOR Plus 5.50% (Floor 1.00%) (6) — — 123 2,969 1 17 2,953
Preferred Stock (6) — — 512 7,413 511 — 7,924
Preferred Stock (6) — — 160 1,637 160 — 1,797
Preferred Stock (6) — — 297 3,038 298 — 3,336
Common Stock (6) — (820 ) — 1,420 — 820 600
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Universal Wellhead Services Holdings, LLC Preferred Member Units (8) — (60 ) 130 950 130 60 1,020
<br> Member Units (8) — (1,340 ) — 2,330 — 1,340 990
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Volusion, LLC 11.5% Secured Debt (8) — — 1,532 18,407 1,342 — 19,749
8% Unsecured Convertible Debt (8) — (118 ) 14 297 112 118 291
Preferred Member Units (8) — — — 14,000 — — 14,000
Warrants (8) — (1,321 ) — 1,890 — 1,321 569
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Other
Amounts related to investments transferred to or from other 1940 Act classification during the period — (260 ) 398 8,071 — — —
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total Affiliate investments $ (2,452 ) $ 1,808 $ 17,417 $ 359,890 $ 27,498 $ 29,649 $ 349,668
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
  • (1)
    • The principal amount, the ownership detail for equity investments and if the investment is income producing is included in the consolidated schedule of investments.
  • (2)
    • Represents the total amount of interest, fees and dividends credited to income for the portion of the period for which an investment was included in Control or Affiliate categories, respectively. For investments transferred between Control and Affiliate categories during the period, any income or investment balances related to the time period it was in the category other than the one shown at period end is included in "Amounts from investments transferred from other 1940 Act classifications during the period."
  • (3)
    • Gross additions include increases in the cost basis of investments resulting from new portfolio investments, follow-on investments and accrued PIK interest, and the exchange of one or more existing securities for one or more new securities. Gross additions also include net increases in unrealized appreciation or net decreases in net unrealized depreciation as well as the movement of an existing portfolio company into this category and out of a different category.
  • (4)
    • Gross reductions include decreases in the cost basis of investments resulting from principal repayments or sales and the exchange of one or more existing securities for one or more new securities. Gross reductions also include net increases in net unrealized depreciation or net decreases in unrealized appreciation as well as the movement of an existing portfolio company out of this category and into a different category.
  • (5)
    • Portfolio company located in the Midwest region as determined by location of the corporate headquarters. The fair value as of June 30, 2019 for control investments located in this region was $248,330. This represented 16.3% of net assets as of June 30, 2019. The fair value as of June 30, 2019 for affiliate investments located in this region was $59,412. This represented 3.9% of net assets as of June 30, 2019.
  • (6)
    • Portfolio company located in the Northeast region as determined by location of the corporate headquarters. The fair value as of June 30, 2019 for control investments located in this region was

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$21,127. This represented 1.4% of net assets as of June 30, 2019. The fair value as of June 30, 2019 for affiliate investments located in this region was $58,646. This represented 3.9% of net assets as of June 30, 2019.

  • (7)
    • Portfolio company located in the Southeast region as determined by location of the corporate headquarters. The fair value as of June 30, 2019 for control investments located in this region was $30,690. This represented 2.0% of net assets as of June 30, 2019. The fair value as of June 30, 2019 for affiliate investments located in this region was $65,310. This represented 4.3% of net assets as of June 30, 2019.
  • (8)
    • Portfolio company located in the Southwest region as determined by location of the corporate headquarters. The fair value as of June 30, 2019 for control investments located in this region was $429,774. This represented 28.3% of net assets as of June 30, 2019. The fair value as of June 30, 2019 for affiliate investments located in this region was $122,137. This represented 8.0% of net assets as of June 30, 2019.
  • (9)
    • Portfolio company located in the West region as determined by location of the corporate headquarters. The fair value as of June 30, 2019 for control investments located in this region was $310,771. This represented 20.4% of net assets as of June 30, 2019. The fair value as of June 30, 2019 for affiliate investments located in this region was $44,163. This represented 2.9% of net assets as of June 30, 2019.
  • (10)
    • All of the Company's portfolio investments are generally subject to restrictions on resale as "restricted securities," unless otherwise noted.
  • (11)
    • This schedule should be read in conjunction with the consolidated schedule of investments and notes to the consolidated financial statements. Supplemental information can be located within the schedule of investments including end of period interest rate, preferred dividend rate, maturity date, investments not paid currently in cash and investments whose value was determined using significant unobservable inputs.
  • (12)
    • Investment has an unfunded commitment as of June 30, 2019 (see Note K). The fair value of the investment includes the impact of the fair value of any unfunded commitments.

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Item 2.    MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

This Quarterly Report on Form 10-Q contains forward-looking statements regarding the plans and objectives ofmanagement for future operations and which relate to future events or our future performance or financial condition. Any such forward-looking statements may involve known and unknown risks,uncertainties and other factors which may cause our actual results, performance or achievements to be materially different from future results, performance or achievements expressed or implied by anyforward-looking statements. Forward-looking statements, which involve assumptions and describe our future plans, strategies and expectations, are generally identifiable by use of the words "may,""will," "should," "expect," "anticipate," "estimate," "believe," "intend" or "project" or the negative of these words or other variations on these words or comparable terminology. Theseforward-looking statements are based on assumptions that may be incorrect, and we cannot assure you that the projections included in these forward-looking statements will come to pass. Our actualresults could differ materially from those expressed or implied by the forward-looking statements as a result of various factors, including, without limitation: changes in laws and regulations andadverse changes in the economy generally or in the industries in whichour portfolio companies operate, including with respect to changes from the impact of the COVID-19 pandemic, and the resulting impacts on our and our portfolio companies' business and operations,liquidity and access to capital; and such other factors referenced in Item 1A entitled "Risk Factors" below in Part 2 of this Quarterly Report on Form 10-Q, and discussed inItem 1A entitled "Risk Factors" in Part 2 of our Quarterly Report on Form 10-Q for the quarter ended March 31, 2020, filed with the Securities and Exchange Commission (the"SEC") on May 8, 2020 and in Item 1A entitled "Risk Factors" in Part I of our Annual Report on Form 10-K for the year ended December 31, 2019, filed with the SEC onFebruary 28, 2020 and elsewhere in this Quarterly Report on Form 10-Q and our other SEC filings.

We have based the forward-looking statements included in this Quarterly Report on Form 10-Q on information available to us on the date of this QuarterlyReport on Form 10-Q, and we assume no obligation to update any such forward-looking statements, unless we are required to do so by applicable law. However, you are advised to refer to anyadditional disclosures that we may make directly to you or through reports that we in the future may file with the SEC, including subsequent periodic and current reports.

ORGANIZATION

Main Street Capital Corporation ("MSCC") is a principal investment firm primarily focused on providing customized debt and equity financing to lower middle market ("LMM") companies and debt capital to middle market ("Middle Market") companies. The portfolio investments of MSCC and its consolidated subsidiaries are typically made to support management buyouts, recapitalizations, growth financings, refinancings and acquisitions of companies that operate in a variety of industry sectors. MSCC seeks to partner with entrepreneurs, business owners and management teams and generally provides "one stop" financing alternatives within its LMM portfolio. MSCC and its consolidated subsidiaries invest primarily in secured debt investments, equity investments, warrants and other securities of LMM companies based in the United States and in secured debt investments of Middle Market companies generally headquartered in the United States.

MSCC was formed in March 2007 to operate as an internally managed business development company ("BDC") under the Investment Company Act of 1940, as amended (the "1940 Act"). MSCC wholly owns several investment funds, including Main Street Mezzanine Fund, LP ("MSMF"), Main Street Capital II, LP ("MSC II") and Main Street Capital III, LP ("MSC III" and, collectively with MSMF and MSC II, the "Funds"), and each of their general partners. The Funds are each licensed as a Small Business Investment Company ("SBIC") by the United States Small Business Administration ("SBA"). Because MSCC is internally managed, all of the executive officers and other employees are employed by MSCC. Therefore, MSCC does not pay any external investment advisory fees, but instead

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directly incurs the operating costs associated with employing investment and portfolio management professionals.

MSC Adviser I, LLC (the "External Investment Manager") was formed in November 2013 as a wholly owned subsidiary of MSCC to provide investment management and other services to parties other than MSCC and its subsidiaries or their portfolio companies ("External Parties") and receives fee income for such services. MSCC has been granted no-action relief by the SEC to allow the External Investment Manager to register as a registered investment adviser under the Investment Advisers Act of 1940, as amended. Since the External Investment Manager conducts all of its investment management activities for External Parties, it is accounted for as a portfolio investment of MSCC and is not included as a consolidated subsidiary of MSCC in MSCC's consolidated financial statements.

MSCC has elected to be treated for U.S. federal income tax purposes as a regulated investment company ("RIC") under Subchapter M of the Internal Revenue Code of 1986, as amended (the "Code"). As a result, MSCC generally will not pay corporate-level U.S. federal income taxes on any net ordinary taxable income or capital gains that it distributes to its stockholders.

MSCC has certain direct and indirect wholly owned subsidiaries that have elected to be taxable entities (the "Taxable Subsidiaries"). The primary purpose of the Taxable Subsidiaries is to permit MSCC to hold equity investments in portfolio companies which are "pass-through" entities for tax purposes.

Unless otherwise noted or the context otherwise indicates, the terms "we," "us," "our," the "Company" and "Main Street" refer to MSCC and its consolidated subsidiaries, which include the Funds and the Taxable Subsidiaries.

COVID-19 UPDATE

The COVID-19 pandemic, and the related effect on the U.S. and global economies, has had, and threatens to continue to have, adverse consequences for our business and operating results, and the businesses and operating results of our portfolio companies. During the quarter ended June 30, 2020, we continued to work collectively with our employees and portfolio companies to navigate the significant challenges created by the COVID-19 pandemic. We remain focused on ensuring the safety of our employees and the employees of our portfolio companies, while also managing our ongoing business activities. In this regard, we remain heavily engaged with our portfolio companies. As discussed below under "Discussion and Analysis of Results of Operations," our investment income, principally our interest and dividend income, has been negatively impacted by the economic effects of COVID-19 through the first six months of 2020. In addition, our net asset value as of June 30, 2020 decreased as compared to our net asset value as of December 31, 2019, primarily due to the unrealized depreciation of our Investment Portfolio caused by the immediate adverse economic effects of the COVID-19 pandemic and uncertainty regarding the extent and duration of its impact, as well as the negative impact of the pandemic on our investment income. We continue to maintain access to multiple sources of liquidity, including cash, unused capacity under our Credit Facility and remaining SBIC debenture capacity, and from December 31, 2019 to June 30, 2020, our total liquidity improved from $495.5 million to $528.7 million. As of June 30, 2020, we were in compliance with all debt covenants and do not anticipate any issues with our ability to comply with all covenants in the future. Refer to "—Liquidity and Capital Resources" below for further discussion as of June 30, 2020.

Neither our management nor our Board of Directors is able to predict the full impact of the COVID-19 pandemic, including its duration and the magnitude of its economic and societal impact. As such, while we will continue to monitor the rapidly evolving situation and guidance from U.S. and international authorities, including federal, state and local public health authorities, we are unable to predict with any certainty the extent to which the outbreak will negatively affect our portfolio

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companies' operating results and financial condition or the impact that such disruptions may have on our results of operations and financial condition in the future.

OVERVIEW

Our principal investment objective is to maximize our portfolio's total return by generating current income from our debt investments and capital appreciation from our equity and equity-related investments, including warrants, convertible securities and other rights to acquire equity securities in a portfolio company. Our LMM companies generally have annual revenues between $10 million and $150 million, and our LMM portfolio investments generally range in size from $5 million to $50 million. Our Middle Market investments are made in businesses that are generally larger in size than our LMM portfolio companies, with annual revenues typically between $150 million and $1.5 billion, and our Middle Market investments generally range in size from $3 million to $20 million. Our private loan ("Private Loan") portfolio investments are primarily debt securities in privately held companies which have been originated through strategic relationships with other investment funds on a collaborative basis. Private Loan investments are typically similar in size, structure, terms and conditions to investments we hold in our LMM portfolio and Middle Market portfolio.

We seek to fill the financing gap for LMM businesses, which, historically, have had limited access to financing from commercial banks and other traditional sources. The underserved nature of the LMM creates the opportunity for us to meet the financing needs of LMM companies while also negotiating favorable transaction terms and equity participations. Our ability to invest across a company's capital structure, from secured loans to equity securities, allows us to offer portfolio companies a comprehensive suite of financing options, or a "one stop" financing solution. Providing customized, "one stop" financing solutions is important to LMM portfolio companies. We generally seek to partner directly with entrepreneurs, management teams and business owners in making our investments. Our LMM portfolio debt investments are generally secured by a first lien on the assets of the portfolio company and typically have a term of between five and seven years from the original investment date.

Our Middle Market portfolio investments primarily consist of direct investments in or secondary purchases of interest-bearing debt securities in privately held companies that are generally larger in size than the companies included in our LMM portfolio. Our Middle Market portfolio debt investments are generally secured by either a first or second priority lien on the assets of the portfolio company and typically have an expected duration of between three and seven years from the original investment date.

Our Private Loan portfolio investments are primarily debt securities in privately held companies that have been originated through strategic relationships with other investment funds on a collaborative basis and are often referred to in the debt markets as "club deals." Private Loan investments are typically similar in size, structure, terms and conditions to investments we hold in our LMM portfolio and Middle Market portfolio. Our Private Loan portfolio debt investments are generally secured by either a first or second priority lien on the assets of the portfolio company and typically have a term of between three and seven years from the original investment date.

Our other portfolio ("Other Portfolio") investments primarily consist of investments that are not consistent with the typical profiles for our LMM, Middle Market or Private Loan portfolio investments, including investments which may be managed by third parties. In our Other Portfolio, we may incur indirect fees and expenses in connection with investments managed by third parties, such as investments in other investment companies or private funds.

Our external asset management business is conducted through the External Investment Manager. The External Investment Manager earns management fees based on the assets of the funds under management and may earn incentive fees, or a carried interest, based on the performance of the funds managed. We have entered into an agreement with the External Investment Manager to share employees in connection with its asset management business generally, and specifically for its

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relationship with HMS Income Fund, Inc. ("HMS Income"). Through this agreement, we share employees with the External Investment Manager, including their related infrastructure, business relationships, management expertise and capital raising capabilities.

The following tables provide a summary of our investments in the LMM, Middle Market and Private Loan portfolios as of June 30, 2020 and December 31, 2019 (this information excludes the Other Portfolio investments and the External Investment Manager which are discussed further below):

As of June 30, 2020
LMM(a) MiddleMarket Private Loan
(dollars in millions)
Number of portfolio companies 69 44 64
Fair value $ 1,188.0 $ 410.5 $ 653.8
Cost $ 1,032.3 $ 516.5 $ 750.7
% of portfolio at cost—debt 65.5 % 94.1 % 93.1 %
% of portfolio at cost—equity 34.5 % 5.9 % 6.9 %
% of debt investments at cost secured by first priority lien 98.2 % 92.1 % 95.3 %
Weighted-average annual effective yield(b) 11.6 % 7.7 % 8.7 %
Average EBITDA(c) $ 5.3 $ 78.1 $ 51.8
  • (a)
    • At June 30, 2020, we had equity ownership in approximately 99% of our LMM portfolio companies, and the average fully diluted equity ownership in those portfolio companies was approximately 41%.
  • (b)
    • The weighted-average annual effective yields were computed using the effective interest rates for all debt investments at cost as of June 30, 2020, including amortization of deferred debt origination fees and accretion of original issue discount but excluding fees payable upon repayment of the debt instruments and any debt investments on non-accrual status. Weighted-average annual effective yield is higher than what an investor in shares of our common stock will realize on its investment because it does not reflect our expenses or any sales load paid by an investor.
  • (c)
    • The average EBITDA is calculated using a simple average for the LMM portfolio and a weighted-average for the Middle Market and Private Loan portfolios. These calculations exclude certain portfolio companies, including two LMM portfolio companies, two Middle Market portfolio companies and four Private Loan portfolio companies, as EBITDA is

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not a meaningful valuation metric for our investments in these portfolio companies, and those portfolio companies whose primary purpose is to own real estate.

As of December 31, 2019
LMM(a) MiddleMarket Private Loan
(dollars in millions)
Number of portfolio companies 69 51 65
Fair value $ 1,206.9 $ 522.1 $ 692.1
Cost $ 1,002.2 $ 572.3 $ 734.8
% of portfolio at cost—debt 65.9 % 94.8 % 94.6 %
% of portfolio at cost—equity 34.1 % 5.2 % 5.4 %
% of debt investments at cost secured by first priority lien 98.1 % 91.3 % 95.4 %
Weighted-average annual effective yield(b) 11.8 % 8.6 % 9.5 %
Average EBITDA(c) $ 5.1 $ 85.0 $ 57.8
  • (a)
    • At December 31, 2019, we had equity ownership in approximately 99% of our LMM portfolio companies, and the average fully diluted equity ownership in those portfolio companies was approximately 42%.
  • (b)
    • The weighted-average annual effective yields were computed using the effective interest rates for all debt investments at cost as of December 31, 2019, including amortization of deferred debt origination fees and accretion of original issue discount but excluding fees payable upon repayment of the debt instruments and any debt investments on non-accrual status. Weighted-average annual effective yield is higher than what an investor in shares of our common stock will realize on its investment because it does not reflect our expenses or any sales load paid by an investor.
  • (c)
    • The average EBITDA is calculated using a simple average for the LMM portfolio and a weighted-average for the Middle Market and Private Loan portfolios. These calculations exclude certain portfolio companies, including three LMM portfolio companies, two Middle Market portfolio companies and three Private Loan portfolio companies, as EBITDA is not a meaningful valuation metric for our investments in these portfolio companies, and those portfolio companies whose primary purpose is to own real estate.

As of June 30, 2020, we had Other Portfolio investments in twelve companies, collectively totaling approximately $98.1 million in fair value and approximately $126.4 million in cost basis and which comprised approximately 4.1% of our Investment Portfolio (as defined in "Critical Accounting Policies—Basis of Presentation" below) at fair value. As of December 31, 2019, we had Other Portfolio investments in eleven companies, collectively totaling approximately $106.7 million in fair value and approximately $118.4 million in cost basis and which comprised approximately 4.1% of our Investment Portfolio at fair value.

As previously discussed, the External Investment Manager is a wholly owned subsidiary that is treated as a portfolio investment. As of June 30, 2020, there was no cost basis in this investment and the investment had a fair value of approximately $69.1 million, which comprised approximately 2.9% of our Investment Portfolio at fair value. As of December 31, 2019, there was no cost basis in this investment and the investment had a fair value of approximately $74.5 million, which comprised approximately 2.9% of our Investment Portfolio at fair value.

Our portfolio investments are generally made through MSCC and the Funds. MSCC and the Funds share the same investment strategies and criteria, although they are subject to different

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regulatory regimes. An investor's return in MSCC will depend, in part, on the Funds' investment returns as they are wholly owned subsidiaries of MSCC.

The level of new portfolio investment activity will fluctuate from period to period based upon our view of the current economic fundamentals, our ability to identify new investment opportunities that meet our investment criteria, and our ability to consummate the identified opportunities. The level of new investment activity, and associated interest and fee income, will directly impact future investment income. In addition, the level of dividends paid by portfolio companies and the portion of our portfolio debt investments on non-accrual status will directly impact future investment income. While we intend to grow our portfolio and our investment income over the long term, our growth and our operating results may be more limited during depressed economic periods. However, we intend to appropriately manage our cost structure and liquidity position based on applicable economic conditions and our investment outlook. The level of realized gains or losses and unrealized appreciation or depreciation on our investments will also fluctuate depending upon portfolio activity, economic conditions and the performance of our individual portfolio companies. The changes in realized gains and losses and unrealized appreciation or depreciation could have a material impact on our operating results.

Because we are internally managed, we do not pay any external investment advisory fees, but instead directly incur the operating costs associated with employing investment and portfolio management professionals. We believe that our internally managed structure provides us with a beneficial operating expense structure when compared to other publicly traded and privately held investment firms which are externally managed, and our internally managed structure allows us the opportunity to leverage our non-interest operating expenses as we grow our Investment Portfolio. For the trailing twelve months ended June 30, 2020 and 2019, the ratio of our total operating expenses, excluding interest expense, as a percentage of our quarterly average total assets was 1.2% and 1.3%, respectively, and 1.4% for the year ended December 31, 2019.

During May 2012, we entered into an investment sub-advisory agreement with HMS Adviser, LP ("HMS Adviser"), which is the investment advisor to HMS Income, a non-listed BDC, to provide certain investment advisory services to HMS Adviser. In December 2013, after obtaining required no-action relief from the SEC to allow us to own a registered investment adviser, we assigned the sub-advisory agreement to the External Investment Manager since the fees received from such arrangement could otherwise have negative consequences on our ability to meet the source-of-income requirement necessary for us to maintain our RIC tax treatment. Under the investment sub-advisory agreement, the External Investment Manager is entitled to 50% of the base management fee and the incentive fees earned by HMS Adviser under its advisory agreement with HMS Income. During the three months ended June 30, 2020 and 2019, the External Investment Manager earned $2.3 million and $4.1 million, respectively, in base management fee income. No incentive fee income was earned in the three months ended June 30, 2020 compared to $1.3 million earned in the three months ended June 30, 2019. During the six months ended June 30, 2020, the External Investment Manager earned $4.8 million in base management fee income and no incentive fees compared to $5.7 million of base management fees and $1.4 million in incentive fees for the comparable period in 2019 under the sub-advisory agreement with HMS Adviser.

During April 2014, we received an exemptive order from the SEC permitting co-investments by us and HMS Income in certain negotiated transactions where co-investing would otherwise be prohibited under the 1940 Act. We have made, and in the future intend to continue to make, such co-investments with HMS Income in accordance with the conditions of the order. The order requires, among other things, that we and the External Investment Manager consider whether each such investment opportunity is appropriate for HMS Income and, if it is appropriate, to propose an allocation of the investment opportunity between us and HMS Income. Because the External Investment Manager may receive performance-based fee compensation from HMS Income, this may provide it an incentive to allocate opportunities to HMS Income instead of us. However, both we and the External Investment

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Manager have policies and procedures in place to manage this conflict. We have filed a new application for co-investment exemptive relief with the SEC that would provide greater flexibility in structuring and effectuating co-investment transactions between us, HMS Income and certain other funds managed by us as described in the application. Our new application for co-investment exemptive relief has not yet been granted, and there is no assurance that such relief will be granted on the terms and conditions in the application or at all. Pending the receipt of such new co-investment relief, we intend to continue to rely on our current co-investment relief.

CRITICAL ACCOUNTING POLICIES

***Basis of Presentation***

Our consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP"). For each of the periods presented herein, our consolidated financial statements include the accounts of MSCC and its consolidated subsidiaries. The Investment Portfolio, as used herein, refers to all of our investments in LMM portfolio companies, investments in Middle Market portfolio companies, Private Loan portfolio investments, Other Portfolio investments, and the investment in the External Investment Manager. Our results of operations for the three and six months ended June 30, 2020 and 2019, cash flows for the six months ended June 30, 2020 and 2019, and financial position as of June 30, 2020 and December 31, 2019, are presented On a consolidated basis. The effects of all intercompany transactions between us and our consolidated subsidiaries have been eliminated in consolidation.

Our accompanying unaudited consolidated financial statements are presented in conformity with U.S. GAAP for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Articles 6, 10 and 12 of Regulation S-X. Accordingly, certain disclosures accompanying annual financial statements prepared in accordance with U.S. GAAP are omitted. In the opinion of management, the unaudited consolidated financial results included herein contain all adjustments, consisting solely of normal recurring accruals, considered necessary for the fair presentation of financial statements for the interim periods included herein. The results of operations for the three and six months ended June 30, 2020 and 2019 are not necessarily indicative of the operating results to be expected for the full year. Also, the unaudited financial statements and notes should be read in conjunction with the audited financial statements and notes thereto for the year ended December 31, 2019. Financial statements prepared on a U.S. GAAP basis require management to make estimates and assumptions that affect the amounts and disclosures reported in the financial statements and accompanying notes. Such estimates and assumptions could change in the future as more information becomes known, which could impact the amounts reported and disclosed herein.

We are an investment company following the accounting and reporting guidance in Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") 946, Financial Services—InvestmentCompanies ("ASC 946"). Under ASC 946, we are precluded from consolidating other entities in which we have equity investments, including those in which we have a controlling interest, unless the other entity is another investment company. An exception to this general principle in ASC 946 occurs if we hold a controlling interest in an operating company that provides all or substantially all of its services directly to us or to any of our portfolio companies. Accordingly, as noted above, our consolidated financial statements include the financial position and operating results for the Funds and the Taxable Subsidiaries. We have determined that none of our portfolio investments qualify for this exception, including the investment in the External Investment Manager. Therefore, our Investment Portfolio is carried on the consolidated balance sheet at fair value with any adjustments to fair value recognized as "Net Unrealized Appreciation (Depreciation)" on the consolidated statements of operations until the investment is realized, usually upon exit, resulting in any gain or loss being recognized as a "Net Realized Gain (Loss)."

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***Investment Portfolio Valuation***

The most significant determination inherent in the preparation of our consolidated financial statements is the valuation of our Investment Portfolio and the related amounts of unrealized appreciation and depreciation. As of June 30, 2020 and December 31, 2019, our Investment Portfolio valued at fair value represented approximately 95% and 96% of our total assets, respectively. We are required to report our investments at fair value. We follow the provisions of FASB ASC 820, Fair ValueMeasurements and Disclosures ("ASC 820"). ASC 820 defines fair value, establishes a framework for measuring fair value, establishes a fair value hierarchy based on the quality of inputs used to measure fair value and enhances disclosure requirements for fair value measurements. ASC 820 requires us to assume that the portfolio investment is to be sold in the principal market to independent market participants, which may be a hypothetical market. Market participants are defined as buyers and sellers in the principal market that are independent, knowledgeable and willing and able to transact. See "Note B.1.—Valuation of the Investment Portfolio" in the notes to consolidated financial statements for a detailed discussion of our investment portfolio valuation process and procedures.

Due to the inherent uncertainty in the valuation process, our determination of fair value for our Investment Portfolio may differ materially from the values that would have been determined had a ready market for the securities existed. In addition, changes in the market environment, portfolio company performance and other events that may occur over the lives of the investments may cause the gains or losses ultimately realized on these investments to be materially different than the valuations currently assigned. We determine the fair value of each individual investment and record changes in fair value as unrealized appreciation or depreciation.

Our Board of Directors has the final responsibility for overseeing, reviewing and approving, in good faith, our determination of the fair value for our Investment Portfolio and our valuation procedures, consistent with 1940 Act requirements. We believe our Investment Portfolio as of June 30, 2020 and December 31, 2019 approximates fair value as of those dates based on the markets in which we operate and other conditions in existence on those reporting dates.

***Revenue Recognition***

*Interest and Dividend Income*

We record interest and dividend income on the accrual basis to the extent amounts are expected to be collected. Dividend income is recorded as dividends are declared by the portfolio company or at the point an obligation exists for the portfolio company to make a distribution. In accordance with our valuation policies, we evaluate accrued interest and dividend income periodically for collectability. When a loan or debt security becomes 90 days or more past due, and if we otherwise do not expect the debtor to be able to service all of its debt or other obligations, we will generally place the loan or debt security on non-accrual status and cease recognizing interest income on that loan or debt security until the borrower has demonstrated the ability and intent to pay contractual amounts due. If a loan or debt security's status significantly improves regarding the debtor's ability to service the debt or other obligations, or if a loan or debt security is sold or written off, we remove it from non-accrual status.

*Fee Income*

We may periodically provide services, including structuring and advisory services, to our portfolio companies or other third parties. For services that are separately identifiable and evidence exists to substantiate fair value, fee income is recognized as earned, which is generally when the investment or other applicable transaction closes. Fees received in connection with debt financing transactions for services that do not meet these criteria are treated as debt origination fees and are deferred and accreted into income over the life of the financing.

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*Payment-in-Kind \("PIK"\) Interest and Cumulative Dividends*

We hold certain debt and preferred equity instruments in our Investment Portfolio that contain PIK interest and cumulative dividend provisions. The PIK interest, computed at the contractual rate specified in each debt agreement, is periodically added to the principal balance of the debt and is recorded as interest income. Thus, the actual collection of this interest may be deferred until the time of debt principal repayment. Cumulative dividends are recorded as dividend income, and any dividends in arrears are added to the balance of the preferred equity investment. The actual collection of these dividends in arrears may be deferred until such time as the preferred equity is redeemed or sold. To maintain RIC tax treatment (as discussed below), these non-cash sources of income may need to be paid out to stockholders in the form of distributions, even though we may not have collected the PIK interest and cumulative dividends in cash. We stop accruing PIK interest and cumulative dividends and write off any accrued and uncollected interest and dividends in arrears when we determine that such PIK interest and dividends in arrears are no longer collectible. For the three months ended June 30, 2020 and 2019, (i) approximately 2.5% and 2.2%, respectively, of our total investment income was attributable to PIK interest income not paid currently in cash and (ii) approximately 0.9% and 1.1%, respectively, of our total investment income was attributable to cumulative dividend income not paid currently in cash. For the six months ended June 30, 2020 and 2019, (i) approximately 1.7% and 2.0%, respectively, of our total investment income was attributable to PIK interest income not paid currently in cash and (ii) approximately 0.9% and 1.1%, respectively, of our total investment income was attributable to cumulative dividend income not paid currently in cash.

***Share-Based Compensation***

We account for our share-based compensation plans using the fair value method, as prescribed by ASC 718, Compensation—Stock Compensation. Accordingly, for restricted stock awards, we measure the grant date fair value based upon the market price of our common stock on the date of the grant and amortize the fair value of the awards as share-based compensation expense over the requisite service period, which is generally the vesting term.

We have also adopted Accounting Standards Update ("ASU") 2016-09, Compensation—Stock Compensation: Improvements to Employee Share-Based PaymentAccounting, which requires that all excess tax benefits and tax deficiencies (including tax benefits of dividends on share-based payment awards) be recognized as income tax expense or benefit in the income statement and not delay recognition of a tax benefit until the tax benefit is realized through a reduction to taxes payable. Accordingly, the tax effects of exercised or vested awards are treated as discrete items in the reporting period in which they occur. Additionally, we have elected to account for forfeitures as they occur.

***Income Taxes***

MSCC has elected to be treated for U.S. federal income tax purposes as a RIC. MSCC's taxable income includes the taxable income generated by MSCC and certain of its subsidiaries, including the Funds, which are treated as disregarded entities for tax purposes. As a RIC, MSCC generally will not pay corporate-level U.S. federal income taxes on any net ordinary taxable income or capital gains that MSCC distributes to its stockholders. MSCC must generally distribute at least 90% of its "investment company taxable income" (which is generally its net ordinary taxable income and realized net short-term capital gains in excess of realized net long-term capital losses) and 90% of its tax-exempt income to maintain its RIC status (pass-through tax treatment for amounts distributed). As part of maintaining RIC status, undistributed taxable income (subject to a 4% non-deductible U.S. federal excise tax) pertaining to a given fiscal year may be distributed up to 12 months subsequent to the end of that fiscal year, provided such dividends are declared on or prior to the later of (i) filing of the U.S. federal income tax return for the applicable fiscal year or (ii) the fifteenth day of the ninth month following the close of the year in which such taxable income was generated.

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The Taxable Subsidiaries primarily hold certain portfolio investments for us. The Taxable Subsidiaries permit us to hold equity investments in portfolio companies which are "pass-through" entities for tax purposes and to continue to comply with the "source-of-income" requirements contained in the RIC tax provisions of the Code. The Taxable Subsidiaries are consolidated with us for U.S. GAAP financial reporting purposes, and the portfolio investments held by the Taxable Subsidiaries are included in our consolidated financial statements as portfolio investments and recorded at fair value. The Taxable Subsidiaries are not consolidated with MSCC for income tax purposes and may generate income tax expense, or benefit, and tax assets and liabilities, as a result of their ownership of certain portfolio investments. The taxable income, or loss, of the Taxable Subsidiaries may differ from their book income, or loss, due to temporary book and tax timing differences and permanent differences. The Taxable Subsidiaries are each taxed at their normal corporate tax rates based on their taxable income. The income tax expense, or benefit, if any, and the related tax assets and liabilities, of the Taxable Subsidiaries are reflected in our consolidated financial statements.

The External Investment Manager is an indirect wholly owned subsidiary of MSCC owned through a Taxable Subsidiary and is a disregarded entity for tax purposes. The External Investment Manager has entered into a tax sharing agreement with its Taxable Subsidiary owner. Since the External Investment Manager is accounted for as a portfolio investment of MSCC and is not included as a consolidated subsidiary of MSCC in MSCC's consolidated financial statements, and as a result of the tax sharing agreement with its Taxable Subsidiary owner, for its stand-alone financial reporting purposes the External Investment Manager is treated as if it is taxed at normal corporate tax rates based on its taxable income and, as a result of its activities, may generate income tax expense or benefit. The income tax expense, or benefit, if any, and the related tax assets and liabilities, of the External Investment Manager are reflected in the External Investment Manager's separate financial statements.

The Taxable Subsidiaries and the External Investment Manager use the liability method in accounting for income taxes. Deferred tax assets and liabilities are recorded for temporary differences between the tax basis of assets and liabilities and their reported amounts in the consolidated financial statements, using statutory tax rates in effect for the year in which the temporary differences are expected to reverse. A valuation allowance is provided, if necessary, against deferred tax assets when it is more likely than not that some portion or all of the deferred tax asset will not be realized.

Taxable income generally differs from net income for financial reporting purposes due to temporary and permanent differences in the recognition of income and expenses. Taxable income generally excludes net unrealized appreciation or depreciation, as investment gains or losses are not included in taxable income until they are realized.

INVESTMENT PORTFOLIO COMPOSITION

Our LMM portfolio investments primarily consist of secured debt, equity warrants and direct equity investments in privately held, LMM companies based in the United States. Our LMM portfolio companies generally have annual revenues between $10 million and $150 million, and our LMM investments generally range in size from $5 million to $50 million. The LMM debt investments are typically secured by either a first or second priority lien on the assets of the portfolio company, can include either fixed or floating rate terms and generally have a term of between five and seven years from the original investment date. In most LMM portfolio investments, we receive nominally priced equity warrants and/or make direct equity investments in connection with a debt investment.

Our Middle Market portfolio investments primarily consist of direct investments in or secondary purchases of interest-bearing debt securities in privately held companies based in the United States that are generally larger in size than the companies included in our LMM portfolio. Our Middle Market portfolio companies generally have annual revenues between $150 million and $1.5 billion, and our Middle Market investments generally range in size from $3 million to $20 million. Our Middle Market

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portfolio debt investments are generally secured by either a first or second priority lien on the assets of the portfolio company and typically have a term of between three and seven years from the original investment date.

Our Private Loan portfolio investments are primarily debt securities in privately held companies which have been originated through strategic relationships with other investment funds on a collaborative basis and are often referred to in the debt markets as "club deals." Private Loan investments are typically similar in size, structure, terms and conditions to investments we hold in our LMM portfolio and Middle Market portfolio. Our Private Loan portfolio debt investments are generally secured by either a first or second priority lien on the assets of the portfolio company and typically have a term of between three and seven years from the original investment date.

Our Other Portfolio investments primarily consist of investments which are not consistent with the typical profiles for LMM, Middle Market and Private Loan portfolio investments, including investments which may be managed by third parties. In the Other Portfolio, we may incur indirect fees and expenses in connection with investments managed by third parties, such as investments in other investment companies or private funds.

Our external asset management business is conducted through the External Investment Manager. The External Investment Manager earns management fees based on the assets of the funds under management and may earn incentive fees, or a carried interest, based on the performance of the funds managed. We have entered into an agreement with the External Investment Manager to share employees in connection with its asset management business generally, and specifically for its relationship with HMS Income. Through this agreement, we share employees with the External Investment Manager, including their related infrastructure, business relationships, management expertise and capital raising capabilities, and we allocate the related expenses to the External Investment Manager pursuant to the sharing agreement. Our total expenses for the three months ended June 30, 2020 and 2019 are net of expenses allocated to the External Investment Manager of $1.8 million and $1.7 million, respectively. Our total expenses for each of the six months ended June 30, 2020 and 2019 are net of expenses allocated to the External Investment Manager of $3.4 million . The External Investment Manager earns management fees based on the assets of the funds under management and may earn incentive fees, or a carried interest, based on the performance of the funds managed. The total contribution of the External Investment Manager to our net investment income consists of the combination of the expenses allocated to the External Investment Manager and the dividend income earned from the External Investment Manager. For the three months ended June 30, 2020 and 2019, the total contribution to our net investment income was $2.2 million and $3.6 million, respectively. For the six months ended June 30, 2020 and 2019, the total contribution to our net investment income was $4.5 million and $6.2 million, respectively.

The following tables summarize the composition of our total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments at cost and fair value by type of investment as a percentage of the total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments as of June 30, 2020 and

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December 31, 2019 (this information excludes the Other Portfolio investments and the External Investment Manager).

Cost: June 30,2020 December 31,2019
First lien debt 77.4 % 78.2 %
Equity 18.5 % 17.2 %
Second lien debt 3.1 % 3.5 %
Equity warrants 0.5 % 0.6 %
Other 0.5 % 0.5 %
​ ​ ​ ​ ​ ​ ​ ​
100.0 % 100.0 %
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
Fair Value: June 30,2020 December 31,2019
--- --- --- --- --- --- --- ---
First lien debt 69.8 % 70.1 %
Equity 26.5 % 26.0 %
Second lien debt 2.8 % 3.0 %
Equity warrants 0.4 % 0.4 %
Other 0.5 % 0.5 %
​ ​ ​ ​ ​ ​ ​ ​
100.0 % 100.0 %
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​

Our LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments carry a number of risks including: (1) investing in companies which may have limited operating histories and financial resources; (2) holding investments that generally are not publicly traded and which may be subject to legal and other restrictions on resale; and (3) other risks common to investing in below investment grade debt and equity investments in our Investment Portfolio. Please see "Risk Factors—Risks Related to Our Investments" contained in our Form 10-K for the fiscal year ended December 31, 2019 and "Risk Factors" below in this Quarterly Report on Form 10-Q and in our Quarterly Report on Form 10-Q for the quarter ended March 31, 2020 for a more complete discussion of the risks involved with investing in our Investment Portfolio.

PORTFOLIO ASSET QUALITY

We utilize an internally developed investment rating system to rate the performance of each LMM portfolio company and to monitor our expected level of returns on each of our LMM investments in relation to our expectations for the portfolio company. The investment rating system takes into consideration various factors, including each investment's expected level of returns, the collectability of our debt investments and the ability to receive a return of the invested capital in our equity investments, comparisons to competitors and other industry participants, the portfolio company's future outlook and other factors that are deemed to be significant to the portfolio company.

As of June 30, 2020, our total Investment Portfolio had eleven investments on non-accrual status, which comprised approximately 1.9% of its fair value and 6.3% of its cost. As of December 31, 2019, our total Investment Portfolio had eight investments on non-accrual status, which comprised approximately 1.4% of its fair value and 4.8% of its cost.

The operating results of our portfolio companies are impacted by changes in the broader fundamentals of the United States economy. In periods during which the United States economy contracts, as it has due to the impact of COVID-19, it is likely that the financial results of small to mid-sized companies, like those in which we invest, could experience deterioration or limited growth from current levels, which could ultimately lead to difficulty in meeting their debt service requirements, to an increase in defaults on our debt investments or in realized losses on our investments and to

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difficulty in maintaining historical dividend payment rates and unrealized appreciation on our equity investments. Consequently, we can provide no assurance that the performance of certain portfolio companies will not be negatively impacted by future economic cycles or other conditions, which could also have a negative impact on our future results.

DISCUSSION AND ANALYSIS OF RESULTS OF OPERATIONS

***Comparison of the three months ended June 30, 2020 and June 30, 2019***
Three Months Ended June 30, Net Change
2020 2019 Amount %
(dollars in thousands)
Total investment income $ 52,007 $ 61,293 $ (9,286 ) (15)%
Total expenses (20,713 ) (21,676 ) 963 4%
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Net investment income 31,294 39,617 (8,323 ) (21)%
Net realized loss from investments (8,584 ) (2,554 ) (6,030 ) 236%
Net unrealized appreciation (depreciation) from:
Portfolio investments 13,164 4,857 8,307 171%
SBIC debentures — (233 ) 233 NM
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total net unrealized appreciation 13,164 4,624 8,540 185%
Income tax benefit (provision) 7,495 (3,433 ) 10,928 NM
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Net increase in net assets resulting from operations $ 43,369 $ 38,254 $ 5,115 13%
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Three Months Ended June 30, Net Change
--- --- --- --- --- --- --- --- --- --- --- --- ---
2020 2019 Amount %
(dollars in thousands, except per share amounts)
Net investment income $ 31,294 $ 39,617 $ (8,323 ) (21)%
Share-based compensation expense 2,817 2,378 439 18%
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Distributable net investment income(a) $ 34,111 $ 41,995 $ (7,884 ) (19)%
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Net investment income per share—Basic and diluted $ 0.48 $ 0.63 $ (0.15 ) (24)%
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Distributable net investment income per share—Basic and diluted(a) $ 0.52 $ 0.67 $ (0.15 ) (22)%
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
  • NM
    • Not Meaningful
  • (a)
    • Distributable net investment income is net investment income as determined in accordance with U.S. GAAP, excluding the impact of share-based compensation expense which is non-cash in nature. We believe presenting distributable net investment income and related per share amounts is useful and appropriate supplemental disclosure of information for analyzing our financial performance since share-based compensation does not require settlement in cash. However, distributable net investment income is a non-U.S. GAAP measure and should not be considered as a replacement to net investment income and other earnings measures presented in accordance with U.S. GAAP. Instead, distributable net investment income should be reviewed only in connection with such U.S. GAAP measures in analyzing our financial performance. A reconciliation of net investment income in accordance with U.S. GAAP to distributable net investment income is presented in the table above.

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*Investment Income*

Total investment income for the three months ended June 30, 2020 was $52.0 million, a 15% decrease from the $61.3 million of total investment income for the corresponding period of 2019. This comparable period decrease was principally attributable to (i) a $5.6 million decrease in interest income, which was primarily due to lower floating interest rates on investment portfolio debt investments based upon the decline in the London Interbank Offered Rate ("LIBOR"), and (ii) a $5.0 million decrease in dividend income from Investment Portfolio equity investments, also partially attributable to the current negative impact of the COVID-19 pandemic and, specifically, on certain of our portfolio companies' operating results, financial condition and liquidity, as well as the uncertainty relative to the duration of the pandemic's effects. These decreases were partially offset by a $1.3 million increase in fee income. The $9.3 million decrease in total investment income in the three months ended June 30, 2020 includes the net impact of a $0.3 million increase from accelerated prepayment, repricing and other income activity considered less consistent or non-recurring.

*Expenses*

Total expenses for the three months ended June 30, 2020 decreased to $20.7 million from $21.7 million for the corresponding period of 2019. This decrease in operating expenses was principally attributable to (i) a $0.7 million decrease in compensation expense, (ii) a $0.4 million decrease in interest expense and (iii) a $0.2 million decrease in general and administrative expense, partially offset by a $0.4 million increase in share-based compensation expense. The decrease in compensation expense is primarily related to a $1.7 million decrease in cash incentive compensation accruals, partially offset by a $0.7 million increase in expense as a result of the change in the fair value of our deferred compensation plan assets. The decrease in interest expense is primarily due to a $2.1 million decrease from the repayment of the 4.50% Notes due 2019 (as defined below) effective December 1, 2019, partially offset by a $1.7 million increase as a result of two separate issuances of our 5.20% Notes (as defined below) in April 2019 and December 2019.

*Net Investment Income*

Net investment income for the three months ended June 30, 2020 decreased 21% to $31.3 million, or $0.48 per share, compared to net investment income of $39.6 million, or $0.63 per share, for the corresponding period of 2019. The decrease in net investment income was principally attributable to the decrease in total investment income, partially offset by lower operating expenses, both as discussed above. The decrease in net investment income per share is also attributable to the 4% increase in weighted average shares outstanding to 65.3 million for the three months ended June 30, 2020, primarily due to shares issued through the ATM Program (as defined in "—Liquidity and Capital Resources—Capital Resources" below), shares issued pursuant to our equity incentive plans and shares issued pursuant to our dividend reinvestment plan.

*Distributable Net Investment Income*

Distributable net investment income for the three months ended June 30, 2020 decreased 19% to $34.1 million, or $0.52 per share, compared with $42.0 million, or $0.67 per share, in the corresponding period of 2019. The decline in distributable net investment income was primarily due to the decreased level of total investment income, partially offset by lower operating expenses, both as discussed above. Distributable net investment income on a per share basis for the three months ended June 30, 2020 also reflects a greater number of average shares outstanding compared to the corresponding period in 2019, as described above. The decline in distributable net investment income per share includes a decrease of $0.01 per share due to the increase in compensation expense as a result of the increase in the fair value of the deferred compensation plan assets during the second quarter of 2020.

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*Net Increase in Net Assets Resulting from Operations*

The net increase in net assets resulting from operations for the three months ended June 30, 2020 was $43.4 million, or $0.66 per share, compared with $38.3 million, or $0.61 per share, during the three months ended June 30, 2019. This $5.1 million increase from the prior year's comparable period was primarily the result of (i) a $10.9 million benefit from the change in the income tax benefit (provision) and (ii) an $8.3 million increase in net unrealized appreciation from portfolio investments, including the impact of accounting reversals relating to realized gains/income (losses), with these increases partially offset by (i) an $8.3 million decrease in net investment income, as discussed above, and (ii) a $6.0 million increase in the net realized loss from investments. The net realized loss from investments of $8.6 million for the three months ended June 30, 2020 was primarily the result of (i) realized losses of $9.9 million from the exit of three Middle Market investments, partially offset by the net realized gain of $1.6 million resulting from the full exit of two LMM investments and the partial exit of another LMM investment.

The following table provides a summary of the total net unrealized appreciation of $13.2 million for the three months ended June 30, 2020:

Three Months Ended June 30, 2020
LMM(a) Middle Market Private Loan Other Total
(dollars in millions)
Accounting reversals of net unrealized (appreciation) depreciation recognized in prior periods due to net realized (gains / income) losses recognized<br>during the current period $ (4.5 ) $ 8.2 $ 3.0 $ — $ 6.7
Net unrealized appreciation (depreciation) relating to portfolio investments (16.4 ) 8.2 11.7 3.0 (b) 6.5
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total net unrealized appreciation (depreciation) relating to portfolio investments $ (20.9 ) $ 16.4 $ 14.7 $ 3.0 $ 13.2
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​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total net unrealized appreciation $ 13.2
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​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
  • (a)
    • LMM includes unrealized appreciation on 20 LMM portfolio investments and unrealized depreciation on 22 LMM portfolio investments.
  • (b)
    • Other includes (i) $7.5 million of unrealized appreciation relating to the External Investment Manager and (ii) $0.8 million of unrealized appreciation relating to deferred compensation plan assets, partially offset by $5.2 million of net unrealized depreciation relating to the Other Portfolio.

The income tax benefit for the three months ended June 30, 2020 of $7.5 million principally consisted of a deferred tax benefit of $8.0 million, which is primarily the result of the net activity relating to our portfolio investments held in our Taxable Subsidiaries, including changes in loss carryforwards, changes in net unrealized appreciation/depreciation and other temporary book-tax differences, partially offset by a current tax provision of $0.6 million related to a $0.4 million provision for current U.S. federal and state income taxes, as well as a $0.2 million provision for excise tax on our estimated undistributed taxable income.

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***Comparison of the six months ended June 30, 2020 and June 30, 2019***
Six Months EndedJune 30, Net Change
2020 2019 Amount %
(dollars in thousands)
Total investment income $ 108,156 $ 122,657 $ (14,501 ) (12 )%
Total expenses (40,317 ) (43,550 ) 3,233 7 %
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Net investment income 67,839 79,107 (11,268 ) (14 )%
Net realized loss from investments (30,449 ) (8,287 ) (22,162 ) NM
Net realized loss on extinguishment of debt (534 ) (5,689 ) 5,155 NM
Net unrealized appreciation (depreciation) from:
Portfolio investments (181,144 ) 16,081 (197,225 ) NM
SBIC debentures 460 4,945 (4,485 ) NM
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total net unrealized appreciation (depreciation) (180,684 ) 21,026 (201,710 ) NM
Income tax benefit (provision) 15,760 (6,502 ) 22,262 NM
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Net increase (decrease) in net assets resulting from operations $ (128,068 ) $ 79,655 $ (207,723 ) NM
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Six Months EndedJune 30, Net Change
--- --- --- --- --- --- --- --- --- --- --- --- --- ---
2020 2019 Amount %
(dollars in thousands, except per share amounts)
Net investment income $ 67,839 $ 79,107 $ (11,268 ) (14 )%
Share-based compensation expense 5,654 4,707 947 20 %
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Distributable net investment income(a) $ 73,493 $ 83,814 $ (10,321 ) (12 )%
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Net investment income per share—Basic and diluted $ 1.04 $ 1.27 $ (0.23 ) (18 )%
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
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Distributable net investment income per share—Basic and diluted(a) $ 1.13 $ 1.34 $ (0.21 ) (16 )%
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  • NM

    • Not Meaningful

  • (b)

    • Distributable net investment income is net investment income as determined in accordance with U.S. GAAP, excluding the impact of share-based compensation expense which is non-cash in nature. We believe presenting distributable net investment income and related per share amounts is useful and appropriate supplemental disclosure of information for analyzing our financial performance since share-based compensation does not require settlement in cash. However, distributable net investment income is a non-U.S. GAAP measure and should not be considered as a replacement to net investment income and other earnings measures presented in accordance with U.S. GAAP. Instead, distributable net investment income should be reviewed only in connection with such U.S. GAAP measures in analyzing our financial performance. A reconciliation of net investment income in accordance with U.S. GAAP to distributable net investment income is presented in the table above.

    Investment Income

Total investment income for the six months ended June 30, 2020 was $108.2 million, a 12% decrease from the $122.7 million of total investment income for the corresponding period of 2019. This comparable period decrease was principally attributable to (i) a $9.4 million decrease in dividend income from Investment Portfolio equity investments, partially attributable to the current negative impact of the COVID-19 pandemic on certain of our portfolio companies' operating results, financial

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condition and liquidity, as well as the uncertainty relative to the duration of the pandemic's effects and (ii) a $8.1 million decrease in interest income, primarily due to a decline in floating interest rates on investment portfolio debt investments. These decreases were partially offset by a $3.0 million increase in fee income. The $14.5 million decrease in total investment income in the six months ended June 30, 2020 includes the positive impact of a net increase of $2.7 million from accelerated prepayment, repricing and other income activity considered less consistent or non-recurring.

*Expenses*

Total expenses for the six months ended June 30, 2020 decreased to $40.3 million from $43.6 million in the corresponding period of 2019. This decrease in operating expenses was principally attributable to a $4.3 million decrease in compensation expense, partially offset by a $0.9 million increase in share-based compensation expense. The decrease in compensation expense is primarily related to (i) a $4.2 million decrease in cash incentive compensation accruals and (ii) a $0.8 million decrease as a result of the change in the fair value of our deferred compensation plan assets, partially offset by a $0.6 million increase in base compensation-related expenses.

*Net Investment Income*

Net investment income for the six months ended June 30, 2020 decreased 14% to $67.8 million, or $1.04 per share, compared to net investment income of $79.1 million, or $1.27 per share, for the corresponding period of 2019. The decrease in net investment income was principally attributable to the decrease in total investment income, partially offset by lower operating expenses, both as discussed above, as well as the 4% increase in weighted average shares outstanding to 64.9 million for the six months ended June 30, 2020, primarily due to shares issued through the ATM Program (as defined in "—Liquidity and Capital Resources—Capital Resources" below), shares issued pursuant to our equity incentive plans and shares issued pursuant to our dividend reinvestment plan.

*Distributable Net Investment Income*

Distributable net investment income for the six months ended June 30, 2020 decreased 12% to $73.5 million, or $1.13 per share, compared with $83.8 million, or $1.34 per share, in the corresponding period of 2019. The decline in distributable net investment income was primarily due to the decreased level of total investment income, partially offset by lower operating expenses, both as discussed above. Distributable net investment income on a per share basis for the six months ended June 30, 2020 also reflects a greater number of average shares outstanding compared to the corresponding period in 2019, as described above. The decline in distributable net investment income on a per share basis includes (i) an increase of $0.04 per share due to the increase in interest income from accelerated prepayment, repricing and other income activity considered non-recurring, as discussed above, and (ii) an increase of $0.01 per share due to the decrease in compensation expense as a result of the decrease in the fair value of the deferred compensation plan assets.

*Net Increase \(Decrease\) in Net Assets Resulting from Operations*

The net increase (decrease) in net assets resulting from operations for the six months ended June 30, 2020 was $(128.1) million, or $(1.97) per share, compared with $79.7 million, or $1.28 per share, during the six months ended June 30, 2019. This $207.7 million decrease from the prior year's comparable period was primarily the result of (i) a $197.2 million decrease in net unrealized appreciation (depreciation) from portfolio investments, primarily caused by the adverse economic effects of the COVID-19 pandemic, and including the impact of accounting reversals relating to realized gains/income (losses), (ii) a $22.2 million increase in the net realized loss from investments, (iii) a $11.3 million decrease in net investment income, as discussed above, and (iv) a $4.5 million decrease in unrealized appreciation on the SBIC debentures accounted for on a fair value basis,

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partially offset by (i) a $22.3 million benefit from the change in the income tax benefit (provision) and (ii) a $5.2 million decrease in the net realized loss on extinguishment of debt. The net realized loss from investments of $30.4 million for the six months ended June 30, 2020 was primarily the result of (i) the net realized loss of $12.7 million from the exit of three LMM investments, (ii) the realized loss of $9.9 million from the exit of three Middle Market investments and (iii) the realized loss of $7.1 million resulting from the partial exit of two LMM investments.

The following table provides a summary of the total net unrealized depreciation of $180.7 million for the six months ended June 30, 2020:

Six Months Ended June 30, 2020
LMM(a) Middle Market Private Loan Other Total
(dollars in millions)
Accounting reversals of net unrealized (appreciation) depreciation recognized in prior periods due to net realized (gains / income) losses recognized<br>during the current period $ 13.0 $ 8.2 $ 2.6 $ — $ 23.8
Net unrealized depreciation relating to portfolio investments (61.9 ) (64.1 ) (56.7 ) (22.3) (b) (205.0 )
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total net unrealized depreciation relating to portfolio investments $ (48.9 ) $ (55.9 ) $ (54.1 ) $ (22.3 ) $ (181.2 )
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Unrealized appreciation relating to SBIC debentures(c) 0.5
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total net unrealized depreciation $ (180.7 )
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
  • (a)
    • LMM includes unrealized appreciation on 18 LMM portfolio investments and unrealized depreciation on 41 LMM portfolio investments.
  • (b)
    • Other includes (i) $16.6 million of net unrealized depreciation relating to the Other Portfolio, (ii) $5.4 million of unrealized depreciation relating to the External Investment Manager and (iii) $0.3 million of unrealized depreciation relating to deferred compensation plan assets.
  • (c)
    • Relates to unrealized depreciation on the SBIC debentures previously issued by MSC II which were accounted for on a fair value basis.

The income tax benefit for the six months ended June 30, 2020 of $15.8 million principally consisted of a deferred tax benefit of $16.0 million, which is primarily the result of the net activity relating to our portfolio investments held in our Taxable Subsidiaries, including changes in loss carryforwards, changes in net unrealized appreciation/depreciation and other temporary book-tax differences, partially offset by a current tax provision of $0.3 million related to a $0.7 provision for excise tax on our estimated undistributed taxable income, partially offset by a $0.4 million benefit for current U.S. federal and state income taxes.

***Liquidity and Capital Resources***

This "Liquidity and Capital Resources" section should be read in conjunction with the "COVID-19 Update" section above.

*Cash Flows*

For the six months ended June 30, 2020, we experienced a net increase in cash and cash equivalents in the amount of $13.3 million, which is the net result of $39.7 million of cash provided by our operating activities and $26.4 million of cash used in our financing activities.

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The $39.7 million of cash provided by our operating activities resulted primarily from (i) cash flows we generated from the operating profits earned totaling $66.0 million, which is our distributable net investment income, excluding the non-cash effects of the accretion of unearned income, payment-in-kind interest income, cumulative dividends and the amortization expense for deferred financing costs, (ii) cash proceeds totaling $235.6 million from the sales and repayments of debt investments and sales of and return on capital of equity investments and (iii) cash proceeds of $2.4 million related to changes in other assets and liabilities, partially offset by cash uses totaling $264.3 million for the funding of new portfolio company investments and settlement of accruals for portfolio investments existing as of December 31, 2019.

The $26.4 million of cash used in our financing activities principally consisted of (i) $71.3 million in cash dividends paid to stockholders, (ii) $22.0 million in repayment of SBIC debentures, (iii) $1.8 million for purchases of vested restricted stock from employees to satisfy their tax withholding requirements upon the vesting of such restricted stock and (iv) $1.2 million for payment of deferred debt issuance costs, SBIC debenture fees and other costs, partially offset by (i) $29.9 million in net cash proceeds from our ATM Program (described below) and direct stock purchase plan, (ii) $25.0 million in cash proceeds from the issuance of SBIC debentures and (iii) $15.0 million in net proceeds from the Credit Facility.

*Capital Resources*

As of June 30, 2020, we had $68.5 million in cash and cash equivalents and $425.0 million of unused capacity under the Credit Facility, which we maintain to support our investment and operating activities. As of June 30, 2020, our net asset value totaled $1,370.9 million, or $20.85 per share.

The Credit Facility, which provides additional liquidity to support our investment and operational activities, includes total commitments of $740.0 million from a diversified group of 18 lenders. The Credit Facility matures in September 2023 and contains an accordion feature which allows us to increase the total commitments under the facility to up to $800.0 million from new and existing lenders on the same terms and conditions as the existing commitments. Borrowings under the Credit Facility bear interest, subject to our election and resetting on a monthly basis on the first of each month, on a per annum basis at a rate equal to the applicable LIBOR rate (0.2% as of June 30, 2020) plus (i) 1.875% (or the applicable base rate (Prime Rate of 3.25% as of June 30, 2020) plus 0.875%) as long as we meet certain agreed upon excess collateral and maximum leverage requirements or (ii) 2.0% (or the applicable base rate plus 1.0%) otherwise. We pay unused commitment fees of 0.25% per annum on the unused lender commitments under the Credit Facility. The Credit Facility is secured by a first lien on the assets of MSCC and its subsidiaries, excluding the equity ownership or assets of the Funds and the External Investment Manager. The Credit Facility contains certain affirmative and negative covenants, including but not limited to: (i) maintaining a minimum availability of at least 10% of the borrowing base, (ii) maintaining an interest coverage ratio of at least 2.0 to 1.0, (iii) maintaining an asset coverage ratio (tangible net worth to Credit Facility borrowings) of at least 1.5 to 1.0 and (iv) maintaining a minimum tangible net worth. The Credit Facility is provided on a revolving basis through its final maturity date in September 2023, and contains two, one-year extension options which could extend the final maturity by up to two years, subject to certain conditions, including lender approval. As of June 30, 2020, we had $315.0 million in borrowings outstanding under the Credit Facility, the interest rate on the Credit Facility was 2.0% (based on the LIBOR rate of 0.2% as of the most recent reset date of June 1, 2020 plus 1.875%) and we were in compliance with all financial covenants of the Credit Facility.

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Through the Funds, we have the ability to issue SBIC debentures guaranteed by the SBA at favorable interest rates and favorable terms and conditions. Under existing SBIC regulations, SBA-approved SBICs under common control have the ability to issue debentures guaranteed by the SBA up to a regulatory maximum amount of $350.0 million. Under existing SBA-approved commitments, we had $314.8 million of outstanding SBIC debentures guaranteed by the SBA as of June 30, 2020 through our wholly owned SBICs, which bear a weighted-average annual fixed interest rate of approximately 3.5%, paid semiannually, and mature ten years from issuance. The first maturity related to our SBIC debentures occurs in 2020, and the weighted-average remaining duration is approximately 5.3 years as of June 30, 2020. During the six months ended June 30, 2020, Main Street issued $25.0 million of SBIC debentures and opportunistically prepaid $22.0 million of existing SBIC debentures that were scheduled to mature over the next year as part of an effort to manage the maturity dates of the oldest SBIC debentures. Debentures guaranteed by the SBA have fixed interest rates that equal prevailing 10-year Treasury Note rates plus a market spread and have a maturity of ten years with interest payable semiannually. The principal amount of the debentures is not required to be paid before maturity, but may be pre-paid at any time with no prepayment penalty. We expect to issue new SBIC debentures under the SBIC program in the future in an amount up to the regulatory maximum amount for affiliated SBIC funds.

In November 2014, we issued $175.0 million in aggregate principal amount of 4.50% unsecured notes due 2019 (the "4.50% Notes due 2019") at an issue price of 99.53%. The 4.50% Notes due 2019 bore interest at a rate of 4.50% per year payable semiannually on June 1 and December 1 of each year. On December 2, 2019, we repaid the entire principal amount of the issued and outstanding 4.50% Notes due 2019, effective December 1, 2019 (the "Maturity Date"), at par value plus the accrued and unpaid interest thereon from June 1, 2019 through the Maturity Date.

In November 2017, we issued $185.0 million in aggregate principal amount of 4.50% unsecured notes due December 1, 2022 (the "4.50% Notes due 2022") at an issue price of 99.16%. The 4.50% Notes due 2022 are unsecured obligations and rank pari passu with our current and future unsecured indebtedness; senior to any of our future indebtedness that expressly provides it is subordinated to the 4.50% Notes due 2022; effectively subordinated to all of our existing and future secured indebtedness, to the extent of the value of the assets securing such indebtedness, including borrowings under our Credit Facility; and structurally subordinated to all existing and future indebtedness and other obligations of any of our subsidiaries, including without limitation, the indebtedness of the Funds. The 4.50% Notes due 2022 may be redeemed in whole or in part at any time at our option subject to certain make-whole provisions. The 4.50% Notes due 2022 bear interest at a rate of 4.50% per year payable semiannually on June 1 and December 1 of each year. We may from time to time repurchase the 4.50% Notes due 2022 in accordance with the 1940 Act and the rules promulgated thereunder. As of June 30, 2020, the outstanding balance of the 4.50% Notes due 2022 was $185.0 million.

The indenture governing the 4.50% Notes due 2022 (the "4.50% Notes due 2022 Indenture") contains certain covenants, including covenants requiring our compliance with (regardless of whether we are subject to) the asset coverage requirements set forth in Section 18(a)(1)(A) as modified by Section 61(a)(1) of the 1940 Act, as well as covenants requiring us to provide financial information to the holders of the 4.50% Notes due 2022 and the Trustee if we cease to be subject to the reporting requirements of the Exchange Act. These covenants are subject to limitations and exceptions that are described in the 4.50% Notes due 2022 Indenture.

In April 2019, we issued $250.0 million in aggregate principal amount of 5.20% unsecured Notes due May 1, 2024 (the "5.20% Notes") at an issue price of 99.125%. Subsequently, in December 2019, we issued an additional $75.0 million of the 5.20% Notes at an issue price of 105.0%. The 5.20% Notes issued in December 2019 have identical terms as, and are a part of a single series with, the 5.20% Notes issued in April 2019. The aggregate net proceeds from the 5.20% Notes issuances were used to repay a portion of the borrowings outstanding under the Credit Facility. The 5.20% Notes are

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unsecured obligations and rank pari passu with our current and future unsecured indebtedness; senior to any of our future indebtedness that expressly provides it is subordinated to the 5.20% Notes; effectively subordinated to all of our existing and future secured indebtedness, to the extent of the value of the assets securing such indebtedness, including borrowings under our Credit Facility; and structurally subordinated to all existing and future indebtedness and other obligations of any of our subsidiaries, including without limitation, the indebtedness of the Funds. The 5.20% Notes may be redeemed in whole or in part at any time at our option subject to certain make-whole provisions. The 5.20% Notes bear interest at a rate of 5.20% per year payable semiannually on May 1 and November 1 of each year. We may from time to time repurchase the 5.20% Notes in accordance with the 1940 Act and the rules promulgated thereunder. As of June 30, 2020, the outstanding balance of the 5.20% Notes was $325.0 million.

The indenture governing the 5.20% Notes (the "5.20% Notes Indenture") contains certain covenants, including covenants requiring our compliance with (regardless of whether we are subject to) the asset coverage requirements set forth in Section 18(a)(1)(A) as modified by Section 61(a)(1) of the 1940 Act, as well as covenants requiring us to provide financial information to the holders of the 5.20% Notes and the Trustee if we cease to be subject to the reporting requirements of the Exchange Act. These covenants are subject to limitations and exceptions that are described in the 5.20% Notes Indenture.

We maintain a program with certain selling agents through which we can sell shares of our common stock by means of at-the-market offerings from time to time (the "ATM Program"). During the six months ended June 30, 2020, we sold 907,515 shares of our common stock at a weighted-average price of $33.06 per share and raised $30.0 million of gross proceeds under the ATM Program. Net proceeds were $29.6 million after commissions to the selling agents on shares sold and offering costs. As of June 30, 2020, sales transactions representing 15,000 shares had not settled and are not included in shares issued and outstanding on the face of the consolidated balance sheet but are included in the weighted-average shares outstanding in the consolidated statement of operations and in the shares used to calculate net asset value per share. As of June 30, 2020, 7,451,635 shares remained available for sale under the ATM Program.

During the year ended December 31, 2019, we sold 2,247,187 shares of our common stock at a weighted-average price of $40.05 per share and raised $90.0 million of gross proceeds under the ATM Program. Net proceeds were $88.8 million after commissions to the selling agents on shares sold and offering costs.

We anticipate that we will continue to fund our investment activities through existing cash and cash equivalents, cash flows generated through our ongoing operating activities, utilization of available borrowings under our Credit Facility, and a combination of future issuances of debt and equity capital. Our primary uses of funds will be investments in portfolio companies, operating expenses and cash distributions to holders of our common stock.

We periodically invest excess cash balances into marketable securities and idle funds investments. The primary investment objective of marketable securities and idle funds investments is to generate incremental cash returns on excess cash balances prior to utilizing those funds for investment in our LMM, Middle Market and Private Loan portfolio investments. Marketable securities and idle funds investments generally consist of debt investments, independently rated debt investments, certificates of deposit with financial institutions, diversified bond funds and publicly traded debt and equity investments.

If our common stock trades below our net asset value per share, we will generally not be able to issue additional common stock at the market price, unless our stockholders approve such a sale and our Board of Directors makes certain determinations. We did not seek stockholder authorization to sell shares of our common stock below the then current net asset value per share of our common stock at

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our 2020 annual meeting of stockholders because our common stock price per share has generally traded significantly above the net asset value per share of our common stock since 2011. We would therefore need future approval from our stockholders to issue shares below the then current net asset value per share.

In order to satisfy the Code requirements applicable to a RIC, we intend to distribute to our stockholders, after consideration and application of our ability under the Code to carry forward certain excess undistributed taxable income from one tax year into the next tax year, substantially all of our taxable income. In addition, as a BDC, we generally are required to meet a coverage ratio of total assets to total senior securities, which include borrowings and any preferred stock we may issue in the future, of at least 200% (or 150% if certain requirements are met). This requirement limits the amount that we may borrow. In January 2008, we received an exemptive order from the SEC to exclude SBA-guaranteed debt securities issued by MSMF and any other wholly owned subsidiaries of ours which operate as SBICs from the asset coverage requirements of the 1940 Act as applicable to us, which, in turn, enables us to fund more investments with debt capital.

Although we have been able to secure access to additional liquidity, including through the Credit Facility, public debt issuances, leverage available through the SBIC program and equity offerings, there is no assurance that debt or equity capital will be available to us in the future on favorable terms, or at all.

***Recently Issued or Adopted Accounting Standards***

In August 2018, the SEC adopted rules (the "SEC Release") amending certain disclosure requirements intended to eliminate redundant, duplicative, overlapping, outdated or superseded, in light of other SEC disclosure requirements, U.S. GAAP requirements or changes in the information environment. In part, the SEC Release requires an investment company to present distributable earnings in total on the consolidated balance sheet and consolidated statements of changes in net assets, rather than showing the three components of distributable earnings as previously shown. We adopted this part of the SEC Release during the year ended December 31, 2018. The impact of the adoption of these rules on our consolidated financial statements was not material. Additionally, the SEC Release requires disclosure of changes in net assets within a registrant's Form 10-Q filing on a quarter-to-date and year-to-date basis for both the current year and prior year comparative periods. We adopted the new requirement to present changes in net assets in interim financial statements within Form 10-Q filings effective January 1, 2019. The adoption of these rules did not have a material impact on the consolidated financial statements.

In March 2020, the FASB issued ASU 2020-04, "Reference rate reform (Topic 848)—Facilitation of the effects of reference rate reform on financial reporting." The amendments in this update provide optional expedients and exceptions for applying U.S. GAAP to certain contracts and hedging relationships that reference LIBOR or another reference rate expected to be discontinued due to reference rate reform and became effective upon issuance for all entities. We have agreements that have LIBOR as a reference rate with certain portfolio companies and also with certain lenders. Many of these agreements include language for choosing an alternative successor rate if LIBOR reference is no longer considered to be appropriate. Contract modifications are required to be evaluated in determining whether the modifications result in the establishment of new contracts or the continuation of existing contracts. We adopted this amendment in March 2020 and plan to apply the amendments in this update to account for contract modifications due to changes in reference rates. We do not believe that it will have a material impact on its consolidated financial statements and disclosures.

In May 2020, the SEC adopted rules Release No. 33-10786 (the "Release"), Amendments to Financial Disclosures about Acquired and Disposed Businesses, amending Rule 1-02(w)(2) used in the determination of a significant subsidiary. In part, the Release eliminated the use of the asset test, and

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amended the income and investment tests for determining whether an unconsolidated subsidiary requires additional disclosure in the footnotes of the financial statements. We adopted the Release during the quarter ended June 30, 2020. The impact of the adoption of these rules on our consolidated financial statements was not material.

From time to time, new accounting pronouncements are issued by the FASB or other standards setting bodies that are adopted by us as of the specified effective date. We believe that the impact of recently issued standards and any that are not yet effective will not have a material impact on our consolidated financial statements upon adoption.

***Inflation***

Inflation has not had a significant effect on our results of operations in any of the reporting periods presented herein. However, our portfolio companies have experienced, and may in the future experience, the impacts of inflation on their operating results, including periodic escalations in their costs for labor, raw materials and third-party services and required energy consumption.

***Off-Balance Sheet Arrangements***

We may be a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financial needs of our portfolio companies. These instruments include commitments to extend credit and fund equity capital and involve, to varying degrees, elements of liquidity and credit risk in excess of the amount recognized in the balance sheet. At June 30, 2020, we had a total of $108.7 million in outstanding commitments comprised of (i) thirty-eight investments with commitments to fund revolving loans that had not been fully drawn or term loans with additional commitments not yet funded and (ii) ten investments with equity capital commitments that had not been fully called.

***Contractual Obligations***

As of June 30, 2020, the future fixed commitments for cash payments in connection with our SBIC debentures, the 4.50% Notes due 2022, the 5.20% Notes and rent obligations under our office lease for each of the next five years and thereafter are as follows:

2020 2021 2022 2023 2024 Thereafter Total
SBIC debentures $ 20,000 $ 40,000 $ — $ 16,000 $ 63,800 $ 175,000 $ 314,800
Interest due on SBIC debentures 5,483 9,707 8,692 8,438 6,990 20,144 59,454
4.50% Notes due 2022 — — 185,000 — — — 185,000
Interest due on 4.50% Notes due 2022 4,163 8,325 8,325 — — — 20,813
5.20% Notes due 2024 — — — — 325,000 — 325,000
Interest due on 5.20% Notes due 2024 8,450 16,900 16,900 16,900 8,450 — 67,600
Operating Lease Obligation(1) 382 776 790 804 818 2,610 6,180
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Total $ 38,478 $ 75,708 $ 219,707 $ 42,142 $ 405,058 $ 197,754 $ 978,847
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
  • (1)
    • Operating Lease Obligation means a rent payment obligation under a lease classified as an operating lease and disclosed pursuant to ASC 842, as may be modified or supplemented.

As of June 30, 2020, we had $315.0 million in borrowings outstanding under our Credit Facility, and the Credit Facility is currently scheduled to mature in September 2023. The Credit Facility contains two, one-year extension options which could extend the maturity to September 2025, subject to lender

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approval. See further discussion of the Credit Facility terms in "—Liquidity and Capital Resources—Capital Resources."

***Related Party Transactions***

As discussed further above, the External Investment Manager is treated as a wholly owned portfolio company of MSCC and is included as part of our Investment Portfolio. At June 30, 2020, we had a receivable of approximately $4.8 million due from the External Investment Manager, which included approximately $3.8 million related primarily to operating expenses incurred by us as required to support the External Investment Manager's business and amounts due from the External Investment Manager to Main Street under a tax sharing agreement (see further discussion above in "—Critical Accounting Policies—Income Taxes") and approximately $1.1 million of dividends declared but not paid by the External Investment Manager.

In November 2015, our Board of Directors approved and adopted the Main Street Capital Corporation Deferred Compensation Plan (the "2015 Deferred Compensation Plan"). The 2015 Deferred Compensation Plan became effective on January 1, 2016 and replaced the Deferred Compensation Plan for Non-Employee Directors previously adopted by the Board of Directors in June 2013 (the "2013 Deferred Compensation Plan"). Under the 2015 Deferred Compensation Plan, non-employee directors and certain key employees may defer receipt of some or all of their cash compensation and directors' fees, subject to certain limitations. Individuals participating in the 2015 Deferred Compensation Plan receive distributions of their respective balances based on predetermined payout schedules or other events as defined by the plan and are also able to direct investments made on their behalf among investment alternatives permitted from time to time under the plan, including phantom Main Street stock units. As of June 30, 2020, $9.9 million of compensation and directors' fees had been deferred under the 2015 Deferred Compensation Plan (including amounts previously deferred under the 2013 Deferred Compensation Plan). Of this amount, $5.0 million was deferred into phantom Main Street stock units, representing 152,633 shares of our common stock. Including phantom stock units issued through dividend reinvestment and net of any shares distributed, the phantom stock units outstanding as of June 30, 2020 represented 154,179 shares of our common stock. Any amounts deferred under the plan represented by phantom Main Street stock units will not be issued or included as outstanding on the consolidated statements of changes in net assets until such shares are actually distributed to the participant in accordance with the plan, but the related phantom stock units are included in weighted-average shares outstanding with the related dollar amount of the deferral included in total expenses in Main Street's consolidated statements of operations as earned. The dividend amounts related to additional phantom stock units are included in the statements of changes in net assets as an increase to dividends to stockholders offset by a corresponding increase to additional paid-in capital.

***Recent Developments***

During August 2020, we declared regular monthly dividends of $0.205 per share for each month of October, November and December of 2020. These regular monthly dividends equal a total of $0.615 per share for the fourth quarter of 2020, unchanged from the regular monthly dividends paid in the fourth quarter of 2019. Including the regular monthly dividends declared for the third and fourth quarters of 2020, we will have paid $29.60 per share in cumulative dividends since our October 2007 initial public offering.

In July 2020, we announced that the External Investment Manager had entered into a definitive asset purchase agreement (the "HMS Purchase Agreement") under which it will become the sole investment adviser and administrator to HMS Income, subject to certain closing conditions. The parties expect the transaction to be completed in the fourth quarter of 2020. Following the closing of the transaction, the External Investment Manager will replace HMS Adviser as the investment adviser and

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administrator to HMS Income. The base management fee rate under the External Investment Manager's proposed new investment advisory agreement with HMS Income, which has been unanimously approved by the board of directors of HMS Income, will be reduced from 2.00% to 1.75%, with no changes to the incentive fee calculations. The consummation of the transactions contemplated by the asset purchase agreement is subject to approval of the new investment advisory agreement by stockholders of HMS Income and other customary closing conditions. Post-closing, HMS Income is expected to change its name to MSC Income Fund, Inc.

In July 2020, we issued an additional $125.0 million aggregate principal amount of the 5.20% Notes at an issue price of 102.674%, for total net proceeds to us, resulting from the issue price and after underwriting discounts and estimated offering expenses payable by us, of approximately $127.3 million. Following the issuance of the additional $125.0 million aggregate principal amount of the 5.20% Notes in July 2020, the outstanding principal balance of the 5.20% Notes was $450.0 million. The 5.20% Notes issued in July 2020 have identical terms as, and are a part of a single series with, the 5.20% Notes issued in April 2019 and in December 2019. The aggregate net proceeds from the 5.20% Notes issuances were used to repay a portion of the borrowings outstanding under the Credit Facility.

**Item 3.**Quantitative and Qualitative Disclosures about Market Risk

We are subject to financial market risks, including changes in interest rates, and changes in interest rates may affect both our interest expense on the debt outstanding under our Credit Facility and our interest income from portfolio investments. Our risk management systems and procedures are designed to identify and analyze our risk, to set appropriate policies and limits and to continually monitor these risks. Our investment income will be affected by changes in various interest rates, including LIBOR and prime rates, to the extent that any debt investments include floating interest rates. See "Risk Factors—Risks Relating to Our Business and Structure -The interest rates of our floating-rate loans to our portfolio companies and for any of our borrowings that extend beyond 2021 might be subject to change based on recent regulatory changes" included in our Form 10-K for the fiscal year ended December 31, 2019 for more information regarding risks associated with our debt investments and borrowings that utilize LIBOR as a reference rate.

The majority of our debt investments are made with either fixed interest rates or floating rates that are subject to contractual minimum interest rates for the term of the investment. As of June 30, 2020, approximately 71% of our debt investment portfolio (at cost) bore interest at floating rates, 84% of which were subject to contractual minimum interest rates. Our interest expense will be affected by changes in the published LIBOR rate in connection with our Credit Facility; however, the interest rates on our outstanding SBIC debentures, 4.50% Notes due 2022 and 5.20% Notes, which collectively comprise the majority of our outstanding debt, are fixed for the life of such debt. As of June 30, 2020, we had not entered into any interest rate hedging arrangements. Due to our limited use of derivatives, we have claimed an exclusion from the definition of the term "commodity pool operator" under the Commodity Exchange Act and, therefore, are not subject to registration or regulation as a pool operator under such Act. The following table shows the approximate annualized increase or decrease in

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the components of net investment income due to hypothetical base rate changes in interest rates, assuming no changes in our investments and borrowings as of June 30, 2020.

Basis Point Change Increase(Decrease)in InterestIncome (Increase)Decreasein InterestExpense Increase(Decrease) in NetInvestmentIncome Increase(Decrease) in NetInvestmentIncome perShare
(dollars in thousands, except per share amounts)
(150) $ (1,099 ) $ 544 $ (555 ) $ (0.01 )
(125) (1,029 ) 544 (485 ) (0.01 )
(100) (921 ) 544 (377 ) (0.01 )
(75) (813 ) 544 (269 ) —
(50) (706 ) 544 (162 ) —
(25) (547 ) 544 (3 ) —
25 675 (788 ) (113 ) —
50 1,374 (1,575 ) (201 ) —
75 2,380 (2,363 ) 17 —
100 5,036 (3,150 ) 1,886 0.03
125 8,036 (3,938 ) 4,098 0.06
150 11,210 (4,725 ) 6,485 0.10

The hypothetical results assume that all LIBOR and prime rate changes would be effective on the first day of the period. However, the contractual LIBOR and prime rate reset dates would vary throughout the period, on either a monthly or quarterly basis, for both our investments and our Credit Facility. The hypothetical results would also be impacted by the changes in the amount of debt outstanding under our Credit Facility (with an increase (decrease) in the debt outstanding under the Credit Facility resulting in an (increase) decrease in the hypothetical interest expense).

**Item 4.**Controls and Procedures

As of the end of the period covered by this report, we carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer, President, Chief Financial Officer, Chief Compliance Officer and Chief Accounting Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15 of the Exchange Act). Based on that evaluation, our Chief Executive Officer, President, Chief Financial Officer, Chief Compliance Officer and Chief Accounting Officer have concluded that our current disclosure controls and procedures are effective in timely alerting them of material information relating to us that is required to be disclosed in the reports we file or submit under the Exchange Act. There have been no changes in our internal control over financial reporting that occurred during the quarter ended June 30, 2020 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. We have not experienced any material impact to our internal controls over financial reporting despite the fact that many of our employees are working remotely due to the COVID-19 pandemic. We are continually monitoring and assessing the COVID-19 situation on our internal controls to minimize the impact on their design and operating effectiveness.

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PART II—OTHER INFORMATION

**Item 1.**Legal Proceedings

We may, from time to time, be involved in litigation arising out of our operations in the normal course of business or otherwise. Furthermore, third parties may seek to impose liability on us in connection with the activities of our portfolio companies. While the outcome of any current legal proceedings cannot at this time be predicted with certainty, we do not expect any current matters will materially affect our financial condition or results of operations; however, there can be no assurance whether any pending legal proceedings will have a material adverse effect on our financial condition or results of operations in any future reporting period.

**Item 1A.**Risk Factors

You should carefully consider the risks described below and all other information contained in this Quarterly Report on Form 10-Q, including our interim financial statements and the related notes thereto, before making a decision to purchase our securities. The risks and uncertainties described below are not the only ones facing us. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may have a material adverse effect on our business, financial condition and/or operating results, as well as the market price of our securities.

In addition to the other information set forth in this report, you should carefully consider the risk factors previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2019 that we filed with the SEC on February 28, 2020 and in our Quarterly Report on Form 10-Q for the quarter ended March 31, 2020 that we filed with the SEC on May 8, 2020, which could materially affect our business, financial condition or operating results.

We cannot assure you that the transactions contemplated by the HMS Purchase Agreement will close, and any failure of the closing to occur could have a material adverse effecton our business, financial condition and results of operations.

The closing of the transactions contemplated by the HMS Purchase Agreement is conditioned on: (i) the requisite approval of the External Investment Manager's new investment advisory agreement by HMS Income's stockholders; (ii) the resignations of certain current members of the HMS Income board of directors and the appointment to the board of directors of two new disinterested directors so that at least seventy-five percent (75%) of the members of the board of directors are not interested directors; (iii) the resignation of the Company's existing officers and the election or appointment of Dwayne L. Hyzak as Chief Executive Officer, Brent D. Smith as Chief Financial Officer and Jason B. Beauvais as Senior Vice President, General Counsel and Chief Compliance Officer; (iv) the receipt of consents from HMS Income's lenders under two credit facilities; (v) the release of any liens on the HMS Adviser's assets; (vi) HMS Income's entry into a non-exclusive, royalty-free license agreement with Main Street to use the name "Main Street," "MSC" or similar derivations thereof in HMS Income's name; and (vii) other customary closing conditions, including that there has been no material adverse effect. We cannot assure you of the timing of the closing of the transactions contemplated by the HMS Purchase Agreement and whether and when the new investment advisory agreement will be effective. Any failure of the closing to occur could have a material adverse effect on our business, financial condition and results of operations.

**Item 2.**Unregistered Sales of Equity Securities and Use of Proceeds

During the three months ended June 30, 2020, we issued 146,229 shares of our common stock under our dividend reinvestment plan. These issuances were not subject to the registration requirements of the Securities Act of 1933, as amended. The aggregate value of the shares of common

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stock issued during the three months ended June 30, 2020 under the dividend reinvestment plan was approximately $4.2 million.

Upon vesting of restricted stock awarded pursuant to our employee equity compensation plan, shares may be withheld to meet applicable tax withholding requirements. Any withheld shares are treated as common stock purchases by the Company in our consolidated financial statements as they reduce the number of shares received by employees upon vesting (see "Purchase of vested stock for employee payroll tax withholding" in the consolidated statements of changes in net assets for share amounts withheld).

**Item 6.**Exhibits

Listed below are the exhibits which are filed as part of this report (according to the number assigned to them in Item 601 of Regulation S-K):

ExhibitNumber Description of Exhibit
10.1 First Amendment to Third Amended and Restated Credit Agreement dated May 28, 2020.
31.1 Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934.
31.2 Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934.
32.1 Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350).
32.2 Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350).

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Main Street Capital Corporation
Date: August 7, 2020 /s/ DWAYNE L. HYZAK<br><br><br><br><br>* * *<br><br><br> Dwayne L. Hyzak<br> Chief Executive Officer(principal executive officer)
Date: August 7, 2020 /s/ BRENT D. SMITH<br><br><br><br><br>* * *<br><br><br> Brent D. Smith<br> Chief Financial Officer and Treasurer(principal financial officer)
Date: August 7, 2020 /s/ LANCE A. PARKER<br><br><br><br><br>* * *<br><br><br> Lance A. Parker<br> Vice President and Chief Accounting Officer(principal accounting officer)

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Exhibit 10.1

FIRST AMENDMENT TO THIRD AMENDED AND RESTATED CREDIT AGREEMENT

This FIRST AMENDMENT TO THIRD AMENDED AND RESTATED CREDIT AGREEMENT (this "Amendment") is effective as of May 28, 2020 (the "Effective Date"), by and among MAIN STREET CAPITAL CORPORATION, a Maryland corporation (the "Borrower"), the GUARANTORS party to the Credit Agreement (as defined below) (the "Guarantors"), TRUIST BANK (the "Administrative Agent") and the lenders party hereto (the "Lenders").

R E C I T A L S:

WHEREAS, the Borrower, the Guarantors, the Administrative Agent and the lenders party thereto have entered into that certain Third Amended and Restated Credit Agreement dated as of June 5, 2018 (the "Credit Agreement"). Capitalized terms used in this Amendment that are not otherwise defined in this Amendment shall have the respective meanings assigned to them in the Credit Agreement.

WHEREAS, the Borrower and Guarantors have requested that the Administrative Agent and the Lenders amend the Credit Agreement. The Lenders, the Administrative Agent, the Borrower and the Guarantors desire to amend the Credit Agreement upon the terms and conditions hereinafter set forth to modify Section 5.07 of the Credit Agreement.

NOW, THEREFORE, in consideration of the Recitals and the mutual promises contained herein and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Borrower, the Guarantors, the Administrative Agent and the Lenders, intending to be legally bound hereby, agree as follows:

SECTION 1.Recitals.    The Recitals are incorporated herein by reference and shall be deemed to be a part of this Amendment.

SECTION 2.Amendment to Section 5.07.    Section 5.07 of the Credit Agreement is deleted in its entirety and replaced with the following:

SECTION 5.07.    *Minimum Consolidated Tangible Net Worth.*    Consolidated Tangible Net Worth shall not be less than the sum

of (i) $555,000,000 plus (ii) 35.0% of the cumulative Net Proceeds of Capital Securities/Conversion of Debt received after September 27, 2013, calculated quarterly at the end of each Fiscal Quarter.

SECTION 3.Conditions to Effectiveness.    The effectiveness of this Amendment and the obligations of the Lenders hereunder are subject to the following conditions:

\(a\)   The

Borrower shall have delivered to the Administrative Agent the following in form and substance satisfactory to the Administrative Agent:

    \(i\)  duly

executed counterparts of this Amendment signed by the Borrower, the Guarantors, the Administrative Agent and the Required Lenders;

    \(ii\)  a

certificate of the Secretary or Assistant Secretary of the Borrower and each Guarantor, certifying to and attaching the resolutions adopted by the board of directors (or similar governing body) of such party approving or consenting to this Amendment and certifying that the Loan Parties' Organizational Documents and Operating Documents have not changed since the Closing Date (or, if any Loan Party's Organizational Documents or Operating Documents have changed since the Closing Date, attaching such Organizational Documents and Operating Documents);

    \(iii\)  a

certificate of the Chief Financial Officer or other Responsible Officer of the Borrower, certifying that (x) as of the date of this Amendment, all representations and warranties of the Borrower and the Guarantors contained in this Amendment, the Credit Agreement and the other Loan Documents are true and correct (except to the extent any such representation or warranty is expressly stated to have been made as of a specific date, in which case such representation or warranty is true and correct as of such date), (y) immediately after giving effect to this Amendment (including any Borrowings in connection therewith and the application of the proceeds thereof), the Borrower is in compliance with the covenants contained in Article V of the Credit Agreement, and (z) no Default or Event of Default has occurred and is continuing, both immediately before and after giving effect to this Amendment (including any Borrowings in connection therewith and the application of the proceeds thereof); and

    \(iv\)  such

other documents or items that the Administrative Agent, the Lenders or their counsel may reasonably request.

\(b\)   As

of the date of this Amendment, all representations and warranties of the Borrower and the Guarantors contained in this Amendment, the Credit Agreement and the other Loan Documents shall be true and correct (except to the extent any such representation or warranty is expressly stated to have been made as of a specific date, in which case such representation or warranty is true and correct as of such date), (y) immediately after giving effect to this Amendment (including any Borrowings in connection therewith and the application of the proceeds thereof), the Borrower shall be in compliance with the covenants contained in Article V of the Credit Agreement, and (z) no Default or Event of Default shall have occurred or be continuing, both immediately before and after giving effect to this Amendment (including any Borrowings in connection therewith and the application of the proceeds thereof).

\(c\)   The

Borrower shall have paid to the Administrative Agent, upon application with appropriate documentation, all reasonable costs and expenses of the Administrative Agent, including reasonable fees, charges and disbursements of counsel for the Administrative Agent, incurred in connection with this Amendment and the transactions contemplated herein.

SECTION 4.No Other Amendment.    Except for the amendments set forth in this Amendment, the text of the Credit Agreement shall remain unchanged and in full force and effect. On and after the Effective Date, all references to the Credit Agreement in each of the Loan Documents shall hereafter mean the Credit Agreement, as amended by this Amendment. This Amendment is not intended to effect, nor shall it be construed as, a novation. The Credit Agreement and this Amendment shall be construed together as a single agreement. This Amendment shall constitute a Loan Document under the terms of the Credit Agreement. Nothing herein contained shall waive, annul, vary or affect any provision, condition, covenant or agreement contained in the Credit Agreement, except as herein amended, nor affect or impair any rights, powers or remedies under the Credit Agreement as hereby amended. The Lenders and the Administrative Agent do hereby reserve all of their rights and remedies against all parties who may be or may hereafter become secondarily liable for the repayment of the Obligations. The Borrower and Guarantors promise and agree to perform all of the requirements, conditions, agreements and obligations under the terms of the Credit Agreement as heretofore and hereby amended, the Credit Agreement, as amended, and the other Loan Documents being hereby ratified and affirmed. The Borrower and Guarantors hereby expressly agree that the Credit Agreement, as amended and the other Loan Documents are in full force and effect.

SECTION 5.Representations and Warranties.    The Borrower and Guarantors hereby represent and warrant to the Administrative Agent and each of the Lenders as follows:

\(a\)   No

Default or Event of Default under the Credit Agreement or any other Loan Document has occurred and is continuing unwaived by the Lenders on the date hereof, or shall result from this Amendment.

\(b\)   The

Borrower and the Guarantors have the power and authority to enter into this Amendment and to do all such acts and things as are required or contemplated hereunder or thereunder to be done, observed and performed by them.

\(c\)   This

Amendment has been duly authorized, validly executed and delivered by one or more authorized officers of the Borrower and the Guarantors and constitutes the legal, valid and binding obligations of the Borrower and the Guarantors enforceable against them in accordance with its terms.

\(d\)   The

execution and delivery of each of this Amendment and the performance by the Borrower and the Guarantors hereunder and thereunder do not and will not require the consent or approval of any regulatory authority or governmental authority or agency having jurisdiction over the Borrower, or any Guarantor, nor be in contravention of or in conflict with the articles of incorporation, bylaws or other organizational documents of the Borrower, or any Guarantor that is a corporation, the articles of organization or operating agreement of any Guarantor that is a limited liability company, or the provision of any statute, or any judgment, order or indenture, instrument, agreement or undertaking, to which the Borrower, or any Guarantor is party or by which the assets or properties of the Borrower and the Guarantors are or may become bound.

SECTION 6.Counterparts; Governing Law.    This Amendment may be executed in multiple counterparts, each of which shall be deemed to be an original and all of which, taken together, shall constitute one and the same agreement. This Amendment may be delivered by facsimile transmission or by electronic mail with a .pdf copy or other replicating image attached, and any printed or copied version of any copy so delivered shall have the same force and effect as an originally signed counterpart. This Amendment shall be construed in accordance with and governed by the law of the State of North Carolina.

SECTION 7.Amendment.    This Amendment may not be amended or modified without the written consent of the Required Lenders and the Administrative Agent.

SECTION 8.Further Assurances.    The Loan Parties agree to promptly take such action, upon the request of the Administrative Agent, as is necessary to carry out the intent of this Amendment.

SECTION 9.Consent by Guarantors.    The Guarantors consent to the foregoing amendments. The Guarantors promise and agree to perform all of the requirements, conditions, agreements and obligations under the terms of the Credit Agreement, as hereby amended, and the other Loan Documents to which they are party, said Credit Agreement, as hereby amended, and such other Loan Documents being hereby ratified and affirmed. The Guarantors hereby expressly agree that the Credit Agreement, as hereby amended, and the other Loan Documents are in full force and effect.

SECTION 10.Severability.    Any provision of this Amendment that is prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective only to the extent of such prohibition or unenforceability without invalidating the remainder of such provision or the remaining provisions hereof or thereof or affecting the validity or enforceability of such provision in any other jurisdiction.

SECTION 11.Notices.    All notices, requests and other communications to any party to the Loan Documents, as amended hereby, shall be given in accordance with the terms of Section 9.01 of the Credit Agreement.

[Remainder of this page intentionally left blank]

IN WITNESS WHEREOF, the parties hereto have executed and delivered, or have caused their respective duly authorized officers and representatives to execute and deliver, this Amendment as of the day and year first above written.

BORROWER:
MAIN STREET CAPITAL CORPORATION
By: /s/ BRENT D. SMITH<br><br><br><br><br>* * * (SEAL)
Name: Brent D. Smith
Title: Chief Financial Officer and Treasurer
GUARANTORS:
MAIN STREET CAPITAL PARTNERS, LLC
By: /s/ BRENT D. SMITH<br><br><br><br><br>* * * (SEAL)
Name: Brent D. Smith
Title: Chief Financial Officer and Treasurer
MAIN STREET EQUITY INTERESTS, INC.
By: /s/ BRENT D. SMITH<br><br><br><br><br>* * * (SEAL)
Name: Brent D. Smith
Title: Chief Financial Officer and Treasurer
MS INTERNATIONAL HOLDINGS, INC.
By: /s/ BRENT D. SMITH<br><br><br><br><br><br>* * * (SEAL)
Name: Brent D. Smith
Title: Chief Financial Officer and Treasurer
MAIN STREET CA LENDING, LLC
By: /s/ BRENT D. SMITH<br><br><br><br><br><br>* * * (SEAL)
Name: Brent D. Smith
Title: Chief Financial Officer and Treasurer

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

TRUIST BANK,<br><br>as Administrative Agent
By: /s/ DAVID BENNETT<br><br><br><br><br>* * * (SEAL)
Name: David Bennett
Title: Director

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

TRUIST BANK,<br><br>as a Lender
By: /s/ DAVID BENNETT<br><br><br><br><br>* * * (SEAL)
Name: David Bennett
Title: Director

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

FROST BANK,<br><br>as a Lender
By: /s/ JAKE FITZPATRICK<br><br><br><br><br>* * * (SEAL)
Name: Jake Fitzpatrick
Title: Vice President

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

ROYAL BANK OF CANADA,<br><br>as a Lender
By: /s/ GLENN VAN ALLEN<br><br><br><br><br>* * * (SEAL)
Name: Glenn Van Allen
Title: Authorized Signatory

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

HANCOCK WHITNEY BANK,<br><br>as a Lender
By: /s/ NATHANIEL ELLIS<br><br><br><br><br>* * * (SEAL)
Name: Nathaniel Ellis
Title: Senior Vice President

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

ZIONS BANCORPORATION, N.A. DBA AMEGY BANK,<br><br>as a Lender
By: /s/ MEGAN WIGINTON<br><br><br><br><br>* * * (SEAL)
Name: Megan Wiginton
Title: Vice President

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

TEXAS CAPITAL BANK, N.A.,<br><br>as a Lender
By: /s/ EVA PAWELEK<br><br><br><br><br>* * * (SEAL)
Name: Eva Pawelek
Title: Senior Vice President

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

CADENCE BANK, N.A.,<br><br>as a Lender
By: /s/ TAYLOR DUCOFF<br><br><br><br><br>* * * (SEAL)
Name: Taylor Ducoff
Title: Vice President

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

COMERICA BANK,<br><br>as a Lender
By: /s/ L.J. PERENYI<br><br><br><br><br>* * * (SEAL)
Name: L.J. Perenyi
Title: Vice President

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

RAYMOND JAMES BANK, N.A.,<br><br>as a Lender
By: /s/ ALEXANDER L. RODY<br><br><br><br><br>* * * (SEAL)
Name: Alexander L. Rody
Title: Senior Vice President

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

BOKF, NA DBA BANK OF TEXAS,<br><br>as a Lender
By: /s/ MARIAN LIVINGSTON<br><br><br><br><br>* * * (SEAL)
Name: Marian Livingston
Title: Senior Vice President

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

WOODFOREST NATIONAL BANK,<br><br>as a Lender
By: /s/ ANDY GAINES<br><br><br><br><br>* * * (SEAL)
Name: Andy Gaines
Title: Senior Vice President

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

CITY NATIONAL BANK,<br><br>as a Lender
By: /s/ ANDREW MILLER<br><br><br><br><br>* * * (SEAL)
Name: Andrew Miller
Title: Vice President

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

FIRST NATIONAL BANK OF PENNSYLVANIA,<br><br>as a Lender
By: /s/ CHARLES W. JONES<br><br><br><br><br>* * * (SEAL)
Name: Charles W. Jones
Title: Senior Vice President

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

BANCORPSOUTH BANK,<br><br>as a Lender
By: /s/ PHILLIP M. GONZALEZ<br><br><br><br><br>* * * (SEAL)
Name: Phillip M. Gonzalez
Title: Senior Vice President

[SIGNATURE PAGE TO FIRST AMENDMENT TO

THIRD AMENDED AND RESTATED CREDIT AGREEMENT]

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Exhibit 10.1

FIRST AMENDMENT TO THIRD AMENDED AND RESTATED CREDIT AGREEMENT

R E C I T A L S

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Exhibit 31.1

I, Dwayne L. Hyzak, certify that:

    • I have reviewed this quarterly report on Form 10-Q for the quarterly period ended June 30, 2020 of Main Street Capital Corporation (the "registrant");
    • Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
    • Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
    • The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

  • (a)

    • Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

  • (b)

    • Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

  • (c)

    • Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

  • (d)

    • Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and
    • The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

  • (a)

    • All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

  • (b)

    • Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Dated this August 7, 2020.

By: /s/ DWAYNE L. HYZAK<br><br><br><br><br>* * *<br><br><br> Dwayne L. Hyzak<br> Chief Executive Officer

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Exhibit 31.1

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Exhibit 31.2

I, Brent D. Smith, certify that:

    • I have reviewed this quarterly report on Form 10-Q for the quarterly period ended June 30, 2020 of Main Street Capital Corporation (the "registrant");
    • Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
    • Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
    • The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

  • (a)

    • Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

  • (b)

    • Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

  • (c)

    • Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

  • (d)

    • Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and
    • The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

  • (a)

    • All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

  • (b)

    • Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Dated this August 7, 2020.

By: /s/ BRENT D. SMITH<br><br><br><br><br>* * *<br><br><br> Brent D. Smith<br> Chief Financial Officer and Treasurer

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Exhibit 31.2

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Exhibit 32.1

Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350)

In connection with the Quarterly Report of Main Street Capital Corporation (the "Registrant") on Form 10-Q for the quarter ended June 30, 2020 (the "Report"), as filed with the Securities and Exchange Commission on the date hereof, I, Dwayne L. Hyzak, the Chief Executive Officer of the Registrant, hereby certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that:

  • (1)
    • The Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934, as amended; and
  • (2)
    • The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.
/s/ DWAYNE L. HYZAK<br><br><br><br><br>* * *
Name: Dwayne L. Hyzak
Date: August 7, 2020

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Exhibit 32.1

Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350)

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Exhibit 32.2

Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350)

In connection with the Quarterly Report of Main Street Capital Corporation (the "Registrant") on Form 10-Q for the quarter ended June 30, 2020 (the "Report"), as filed with the Securities and Exchange Commission on the date hereof, I, Brent D. Smith, the Chief Financial Officer of the Registrant, hereby certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that:

  • (1)
    • The Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934, as amended; and
  • (2)
    • The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.
/s/ BRENT D. SMITH<br><br><br><br><br>* * *
Name: Brent D. Smith
Date: August 7, 2020

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Exhibit 32.2

Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350)

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