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8-K

Winchester Bancorp, Inc./MD/ (WSBK)

8-K 2026-04-29 For: 2026-04-29
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UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 29, 2026

Winchester Bancorp, Inc.

(Exact name of Registrant as Specified in Its Charter)

Maryland 001-42627 33-3361275
(State or Other Jurisdiction<br>of Incorporation) (Commission File Number) (IRS Employer<br>Identification No.)
661 Main Street
Winchester, Massachusetts 01890
(Address of Principal Executive Offices) (Zip Code)
Registrant’s Telephone Number, Including Area Code: (781) 729-2130
---

(Former Name or Former Address, if Changed Since Last Report)

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:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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

Title of each class Trading<br>Symbol(s) Name of each exchange on which registered
Common Stock, par value $0.01 per share WSBK The Nasdaq Stock Market

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

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 2.02 Results of Operations and Financial Condition.

On April 29, 2026, Winchester Bancorp, Inc., the holding company for Winchester Savings Bank, issued a press release reporting its financial results for the quarter ended March 31, 2026.

A copy of the press release announcing the results is included as Exhibit 99.1 to this Current Report on Form 8-K and shall not be deemed "filed" for purposes of section 18 of the Securities Exchange Act of 1934, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit No. Description

99.1 Press Release dated April 29, 2026

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.

Winchester Bancorp, Inc.
Date: April 29, 2026 By: /s/ John A. Carroll
John A. Carroll
President and Chief Executive Officer

EX-99.1

Exhibit 99.1

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Winchester Bancorp, Inc.

Announces Results for the Quarter Ended March 31, 2026

Investor Contact

John A. Carroll

President and Chief Executive Officer

IR@WinchesterSavings.com

(781) 729-2130

WINCHESTER, MA, April 29, 2026 - Winchester Bancorp, Inc. (NASDAQ-WSBK) (the "Company"), the holding company for Winchester Savings Bank (the "Bank"), today announced its third quarter 2026 financial results. The Company reported net income of $1.1 million or $0.13 per common share compared to net income of $305,000 for the quarter ended March 31, 2025, an increase of $840,000, or 275.4%, in net income. For the nine months ended March 31, 2026, the Company reported net income of $3.2 million, or $0.36 per common share, as compared to net income of $46,000 for the nine months ended March 31, 2025, an increase of $3.1 million in net income.

“We are extremely pleased with third quarter results, driven by strong loan and deposit growth and continued margin expansion. Loan growth of $40.4 million outpaced deposit growth of $37.4 million as management strategically prioritized growing the loan portfolio in advance of significant payoffs anticipated in the fourth quarter. Our newly established municipal channel continues to generate value and has enabled us to restructure wholesale funding more effectively. Year-over-year, net interest margin expanded by 52 basis points, while return on average assets improved to 0.44%, up from 0.14% in the third quarter of 2025. Net income was $0.13 per common share for the quarter, and the efficiency ratio improved meaningfully to 72.7%, compared to 92.5% in the third quarter of 2025. As we enter the final quarter of our fiscal year, we are pleased to announce the expansion of our branch network with a new location in Wakefield, MA. We remain steadfast in our commitment to delivering shareholder value and are optimistic about the trajectory of our strategic plan as we start our second year as a publicly traded company.” said John A. Carroll, President and Chief Executive Officer.

BALANCE SHEET

Total assets were $1.06 billion at March 31, 2026, representing an increase of $107.7 million, or 11.3%, from June 30, 2025.

  • Cash and cash equivalents were $54.0 million, reflecting a decrease of $1.3 million from June 30, 2025.

  • Net loans were $840.5 million, representing an increase of $89.3 million or 11.9%, from June 30, 2025, as we continue to experience strong loan demand. The main driver of the new growth was in our multifamily and residential portfolios which increased $49.6 million, or 29.8%, and $31.7 million or 8.9%, respectively, since June 30, 2025.

  • Investment securities totaled $124.0 million, representing an increase of $19.5 million, or 34.1%, from June 30, 2025.

  • Deposits totaled $783.7 million, representing an increase of $104.5 million, or 15.4% since June 30, 2025. The increase in deposits was a result of growth of $105.3 million in municipal customer deposits. As a result of the increase in municipal deposits, money market accounts increased $108.7 million. Savings accounts and certificates of deposit have decreased $4.8 million and $4.2 million, respectively, while demand deposit accounts have increased $4.8 million.

  • FHLB borrowings totaled $146.9 million, representing a decrease of $117,000 or 0.1% from $147.0 million at June 30, 2025.

  • Stockholders’ equity was $119.1 million, representing an increase of $3.8 million from $115.4 million, or 3.3% from June 30, 2025. The increase was driven by net income of $3.2 million for the nine months ended March 31, 2026 and a decrease in accumulated other comprehensive loss of $457,000.

    Exhibit 99.1

NET INTEREST INCOME

Net interest income was $6.3 million for the quarter ended March 31, 2026, compared to $4.4 million for the quarter ended March 31, 2025, representing an increase of $1.9 million, or 44.0%. Net interest margin expanded by 52 basis points to 2.54% for the quarter ended March 31, 2026 compared to 2.02% for the quarter ended March 31, 2025.

  • The increase in interest income during the quarter ended March 31, 2026 was primarily attributable to the increase in the average balance of loans and investment securities.
  • The decrease in interest expense during the quarter was attributable to the decrease in average rates on interest bearing deposit accounts and a decrease in average borrowings as well as lower borrowing rates.

NON-INTEREST INCOME

Non-interest income was $367,000 for the quarter ended March 31, 2026 compared to $299,000 for the quarter ended March 31, 2025.

NON-INTEREST EXPENSE

Non-interest expense was $4.8 million for the quarter ended March 31, 2026, representing an increase of $524,000 or 12.1% from the quarter ended March 31, 2025 due to a higher reserve for off balance sheet commitments and an increase in data processing and salaries and employee benefits expense.

ASSET QUALITY

Asset quality remains strong. The allowance for credit losses on loans in total and as a percentage of total gross loans as of March 31, 2026 was $4.5 million and 0.54%, compared to $4.1 million and 0.55%, as of June 30, 2025, and $3.6 million and 0.49% as of March 31, 2025.

  • During the quarter ended March 31, 2026, the Company recorded $12,000 of net charge offs compared to net charge offs of $50,000 for the quarter ended March 31, 2025.
  • Non-performing assets totaled $1.7 million, or 0.16% of total assets, as of March 31, 2026, decrease from $1.9 million, or 0.20% of total assets, as of March 31, 2025.

ABOUT WINCHESTER BANCORP, INC.

Winchester Bancorp, Inc. is the mid-tier holding company of Winchester Savings Bank and is the majority owned subsidiary of Winchester Bancorp, MHC. Winchester Savings Bank's mission is to operate and grow a profitable community-oriented financial institution that is dedicated to meeting the banking needs of individuals and small businesses in the communities in which it operates.

FORWARD-LOOKING STATEMENTS

This press release contains forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, which can be identified by the use of words such as "estimate," "project," "believe," "intend," "anticipate," "assume," "plan," "seek," "expect," "will," "may," "should," "indicate," "would," "contemplate," "continue," "target" and words of similar meaning. These forward-looking statements are based on our current beliefs and expectations and are inherently subject to significant business, economic and competitive uncertainties and contingencies, many of which are beyond our control. In addition, these forward-looking statements are subject to assumptions with respect to future business strategies and decisions that are subject to change. Certain factors that could cause actual results to differ materially from expected results include increased competitive pressures, demand for loan products, deposit flows, changes in the interest rate environment, the effects of inflation, general economic conditions (including potential recessionary conditions) or conditions within the securities markets, monetary and fiscal policies of the U.S. Government, including policies of the U.S. Treasury and the Board of Governors of the Federal Reserve Board; changes in the quality, size and composition of our loan and securities portfolios, changes in liquidity, including the size and composition of our deposit portfolio, and the percentage of uninsured deposits in the portfolio; changes in asset quality, prepayment speeds, charge-offs and/or credit loss provisions, our ability to access cost-effective funding; the effects of continued U.S. Government shutdown; changes in demand for our

Exhibit 99.1

products and services; legislative, accounting, tax and regulatory changes; the imposition of tariffs or other domestic or international governmental policies; the current or anticipated impact of military conflict, terrorism or other geopolitical events; a failure in or breach of our operational or security systems or infrastructure, including cyberattacks that could adversely affect the Company's financial condition and results of operations and the business in which the Company and the Bank are engaged, the failure to maintain current technologies and the failure to retain or attract employees.

You should not place undue reliance on forward-looking statements. Winchester Bancorp, Inc. undertakes no obligation to revise these forward-looking statements or to reflect events or circumstances after the date of this press release.

Exhibit 99.1

Winchester Bancorp, Inc. and Subsidiaries

Consolidated Balance Sheets (unaudited)

(Dollars in thousands, except share and per share data)

June 30,
2025
Assets
Cash and due from banks 1,532 $ 7,513
Interest-bearing deposits 52,420 47,731
Total cash and cash equivalents 53,952 55,244
Securities available for sale, at fair value 65,204 47,299
Securities held to maturity, at amortized cost 58,784 57,211
Federal Home Loan Bank stock, at cost 6,208 6,278
Loans, net of allowance for credit losses of 4,537 at March 31, 2026    and 4,151 at June 30, 2025 840,544 751,220
Bank owned life insurance 11,280 10,925
Premises and equipment, net 5,714 6,418
Accrued interest receivable 3,620 3,327
Net deferred tax asset 1,081 1,212
Other assets 10,717 10,244
1,057,104 $ 949,378
Liabilities and stockholders' equity
Non-interest-bearing deposits 63,445 $ 55,696
Interest-bearing deposits 720,253 623,486
Federal Home Loan Bank advances 146,883 147,000
Mortgagors’ escrow accounts 1,915 1,756
Accrued expenses and other liabilities 5,464 6,088
Total liabilities 937,960 834,026
Commitments and contingencies
Preferred stock, .01 par value, 5,000,000 shares authorized, none outstanding
Common stock, .01 par value, 20,000,000 shares authorized, 9,295,376 issued and outstanding as of March 31, 2026 and June 30, 2025 93 93
Additional paid-in capital 39,574 39,571
Unearned compensation (ESOP) (3,195 ) (3,346 )
Retained earnings 83,901 80,720
Accumulated other comprehensive loss (1,229 ) (1,686 )
Total stockholders' equity 119,144 115,352
Total liabilities and stockholders' equity 1,057,104 $ 949,378

All values are in US Dollars.

Exhibit 99.1

Winchester Bancorp, Inc. and Subsidiaries

Consolidated Statements of Operations (unaudited)

(Dollars in thousands, except share and per share data)

Three months ended Nine months ended
March 31, March 31,
2026 2025 2026 2025
(In thousands, except share data)
Interest and dividend income:
Interest and fees on loans $ 10,861 $ 9,479 $ 31,965 $ 27,739
Interest and dividends on securities 1,183 744 3,463 2,266
Interest on federal funds sold and other interest-bearing deposits 472 390 1,439 1,347
Total interest and dividend income 12,516 10,613 36,867 31,352
Interest expense:
Interest on deposits 4,903 4,681 14,449 14,633
Interest on Federal Home Loan Bank advances 1,316 1,559 4,316 4,547
Total interest expense 6,219 6,240 18,765 19,180
Net interest income 6,297 4,373 18,102 12,172
Provision (benefit) for credit losses 325 (21 ) 393 1,379
Net interest income, after provision (benefit) for credit losses 5,972 4,394 17,709 10,793
Non-interest income:
Customer service fees 185 167 567 535
Income on bank owned life insurance 117 115 355 351
Loss on available for sale securities, net (317 )
Gain (loss) on marketable equity securities, net (71 ) 152
Gain on sale of loans 8
Miscellaneous 65 88 187 150
Total non-interest income 367 299 800 1,188
Non-interest expense:
Salaries and employee benefits 2,659 2,531 8,049 6,967
Occupancy and equipment, net 464 409 1,373 1,199
Data processing 477 356 1,267 1,008
Deposit insurance 165 210 535 638
Marketing and advertising 216 120 544 312
Net periodic pension and post retirement benefit, less service costs (73 ) (723 )
Other general and administrative 864 695 2,652 2,624
Total non-interest expense 4,845 4,321 14,347 12,025
Income (loss) before income taxes 1,494 372 4,162 (44 )
Provision (benefit) for income taxes 349 67 981 (90 )
Net income $ 1,145 $ 305 $ 3,181 $ 46
Share Data:
Average common shares outstanding, basic and diluted 8,973,154 N/A 8,968,996 N/A
Basic and diluted net income per share $ 0.13 N/A $ 0.36 N/A

Exhibit 99.1

Winchester Bancorp, Inc. and Subsidiaries

Average Balances and Yields (unaudited)

For the Three Months Ended
March 31, 2026 March 31, 2025
Average<br>Outstanding<br>Balance Interest Average<br>Yield/Rate (1) Average<br>Outstanding<br>Balance Interest Average<br>Yield/Rate (1)
(Dollars in thousands)
Interest-earning assets:
Loans $ 817,314 $ 10,861 5.32 % $ 735,256 $ 9,479 5.16 %
Securities 122,706 1,183 3.86 % 86,597 744 3.44 %
Federal funds sold and other interest-bearing deposits 50,683 472 3.73 % 42,373 390 3.68 %
Total interest-earning assets 990,703 12,516 5.05 % 864,226 10,613 4.91 %
Non-interest-earning assets 43,553 40,668
Allowance for credit losses on loans (4,410 ) (3,673 )
Total assets $ 1,029,846 $ 901,221
Interest-bearing liabilities:
NOW and demand deposits $ 56,575 9 0.06 % $ 54,291 4 0.03 %
Savings accounts 153,877 779 2.02 % 163,830 910 2.22 %
Money market accounts 206,463 1,593 3.09 % 108,775 845 3.11 %
Certificates of deposit 282,681 2,522 3.57 % 285,692 2,922 4.09 %
Total interest-bearing deposits 699,596 4,903 2.80 % 612,588 4,681 3.06 %
Borrowings 132,152 1,316 3.98 % 144,429 1,559 4.32 %
Total interest-bearing liabilities 831,748 6,219 2.99 % 757,017 6,240 3.30 %
Other non-interest-bearing liabilities 78,897 63,356
Total liabilities 910,645 820,373
Stockholders' equity 119,201 80,848
Total liabilities and stockholders' equity $ 1,029,846 $ 901,221
Net interest income $ 6,297 $ 4,373
Net interest rate spread (2) 2.06 % 1.61 %
Net interest-earning assets (3) $ 158,955 $ 107,209
Net interest margin (4) 2.54 % 2.02 %
Average interest-earning assets to<br>   average interest-bearing liabilities 119.11 % 114.16 %
(1) Annualized.
(2) Net interest rate spread represents the difference between the weighted average yield on interest-earning assets and the weighted average rate of interest-bearing liabilities.
(3) Net interest-earning assets represent total interest-earning assets less total interest-bearing liabilities.
(4) Net interest margin represents net interest income divided by average total interest-earning assets.

Exhibit 99.1

Winchester Bancorp, Inc. and Subsidiaries

Selected Financial Highlights (unaudited)

(Dollars in thousands, except share and per share data)

For the Three Months Ended
March 31,
2026 2025
Earnings Data
Net interest income $ 6,297 $ 4,373
Non-interest income 367 299
Total net interest income and non-interest income 6,664 4,672
Provision (benefit) for credit losses 325 (21 )
Non-interest expense 4,845 4,321
Pre-tax income 1,494 372
Net income 1,145 305
Per share Data
Basic and diluted earnings per share $ 0.13 N/A
Book value per share $ 13.00 N/A
Earnings
Return on average assets (1) 0.44 % 0.14 %
Return on average stockholders' equity (1) 3.84 % 1.51 %
Net interest margin (1) 2.54 % 2.02 %
Cost of deposits (1) 2.80 % 3.06 %
Efficiency ratio 72.70 % 92.51 %
Balance Sheet
Total assets $ 1,057,104 $ 923,092
Loans, net $ 840,544 $ 727,728
Total stockholders' equity $ 119,144 $ 80,914
Asset quality
Allowance for credit losses (ACL) $ 4,537 $ 3,600
ACL/Total loans 0.54 % 0.49 %
ACL/Total nonperforming loans (NPLs) 272.17 % 191.77 %
Net charge-offs/average total loans (0.00 )% (0.01 )%
Capital Ratios
Stockholders' equity/total assets 11.27 % 8.77 %
(1) Annualized.