Winchester Bancorp approves 2026 Equity Incentive Plan

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On November 4, 2026, at the 2026 Annual Meeting of Stockholders (the "Annual Meeting") of Winchester Bancorp, Inc. (the "Company"), the Company's stockholders approved the Winchester Bancorp, Inc. 2026 Equity Incentive Plan⁵ (the "Plan"). The Plan will be administered by the Compensation Committee of the Company's Board of Directors (the "Committee"). The Committee, in its discretion, may grant stock-based awards, including, but not limited to, restricted stock, restricted stock units, non-statutory stock options, and incentive stock options, to officers, employees and non-employee directors of the Company and its subsidiaries¹. A description⁵ of the Plan can be found in the Company's definitive proxy statement filed with the Securities and Exchange Commission on September 28, 2026 (the "Proxy Statement") in the section entitled "PROPOSAL 2-APPROVAL OF THE WINCHESTER BANCORP, INC. 2026 EQUITY INCENTIVE PLAN," which is incorporated herein by reference. A copy of the Plan is attached hereto as Exhibit 10.1⁵ and incorporated herein by reference.

Item 5.07 Submission of Matters to a Vote of Security Holders.

The final results of the vote for² each of the matters submitted to a vote of stockholders are as follows:

1. The following individuals were elected as directors, each for a three-year term and until their successors are duly elected and qualified, by the following vote:

FOR

WITHHELD

Paula M. Cotter²

6,997,791²

110,211²

Neal J. Harte

6,998,307

109,695

William P. Hood

6,998,282

109,720

Edward Merritt

6,998,307

109,695

There were 1,088,758 broker non-votes on the proposal.

2. The Winchester Bancorp, Inc. 2026 Equity Incentive Plan was approved by stockholders' by the following vote:²

FOR

AGAINST²

ABSTAIN

7,003,694²

90,748²

13,560

There were 1,088,758 broker non-votes on the proposal.

3. The appointment of Wolf & Company, P.C. as the Company's independent registered public accounting firm³ for the six-month transition period ending December 31, 2026 was ratified by stockholders³ by the following vote:⁴

FOR

AGAINST

ABSTAIN

7,978,846⁴

197,913⁴

20,001

There were no broker non-votes on the proposal⁴.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.⁵

Description

10.1

Winchester Bancorp, Inc. 2026 Equity Incentive Plan

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

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 hereunto duly authorized.

Winchester Bancorp, Inc.

Date:

November 5, 2026

By:

/s/ John A. Carroll

John A. Carroll

President and Chief Executive Officer