8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENTREPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event Reported): April 13, 2021

Gladstone Investment Corporation

(Exact Name of Registrant as Specified in Charter)

1521 Westbranch Drive, Suite 100, McLean, Virginia 22102

(Address of Principal Executive Offices) (Zip Code)

(703) 287-5800

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

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

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2). Emerging growth company  ☐

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.  ☐

Item 7.01. Regulation FD Disclosure.

On April 13, 2021, Gladstone Investment Corporation (the “Company”) issued a press release, filed herewith as Exhibit 99.1, announcing that the Company’s board of directors declared monthly cash distributions for the Company’s common stock and 6.375% Series E Cumulative Term Preferred Stock for each of April, May, and June 2021 and a supplemental distribution to common stockholders for June 2021.

The information disclosed under this Item 7.01, including portions of Exhibit 99.1 attached hereto regarding distributions, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 and shall not be deemed incorporated by reference into any filing made under the Securities Act of 1933, except as expressly set forth by specific reference in such filing.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

SIGNATURE

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 hereunto duly authorized.

EX-99.1

Exhibit 99.1

Gladstone Investment Announces Monthly Cash Distributions for

April, May, and June 2021 and

and a Supplemental Distribution to Common Stockholders

MCLEAN, VA, April 13, 2021– Gladstone Investment Corporation (Nasdaq: GAIN) (the “Company”) announced today that its board of directors declared the following monthly cash distributions to preferred and common stockholders.

The Company will also pay a supplemental distribution of $0.06 per share to holders of its common stock in June 2021. The board of directors will continue to evaluate the amount and timing of any additional, semi-annual, supplemental distributions in future periods.

Common Stock: $0.07 per share of common stock for each of April, May, and June 2021, and a supplemental distribution of $0.06 per share of common stock in June 2021, payable per the table below.

Series E Term Preferred Stock: $0.1328125 per share of the Company’s 6.375% Series E Cumulative Term Preferred Stock (“Series E Term Preferred Stock”) for each of April, May, and June 2021, payable per the table below. The Series E Term Preferred Stock trades on the Nasdaq under the symbol “GAINL.”

The Company offers a dividend reinvestment plan (the “DRIP”) to its common stockholders. For more information regarding the DRIP, please visit www.gladstoneinvestment.com.

About Gladstone Investment Corporation: Gladstone Investment Corporation is a publicly traded business development company that seeks to make secured debt and equity investments in lower middle market businesses in the United States in connection with acquisitions, changes in control and recapitalizations. Information on the business activities of all the Gladstone funds can be found at www.gladstonecompanies.com.

Source: Gladstone Investment Corporation

Investor Relations Inquiries: Please visit www.gladstone.com or +1-703-287-5893.

Forward-looking Statements:

The statements in this press release regarding potential future distributions, earnings and operations of the Company are “forward-lookingstatements.” These forward-looking statements inherently involve certain risks and uncertainties in predicting future results and conditions. Although these statements are based on the Company’s current plans that are believed to bereasonable as of the date of this press release, a number of factors could cause actual results and conditions to differ materially from these forward-looking statements, including those factors described from time to time in the Company’sfilings with the Securities and Exchange Commission. The Company undertakes no obligation to publicly release the result of any revisions to these forward-looking statements that may be made to reflect any future events or otherwise, except asrequired by law.