Winchester Bancorp (WSBK) director adds 915 shares via IRA purchase

Rhea-AI Filing Summary

Winchester Bancorp director Merritt Edward J reported an indirect open-market purchase of common stock. On May 26, 2026, an IRA associated with him bought 915 shares of Winchester Bancorp, Inc. at $12.76 per share. Following this transaction, he indirectly holds 20,915 common shares through the IRA.

Insider Trade Summary

Net Buyer: 915 shares ($11,675)

Net Buy 1 txn

Insider Merritt Edward J

Role null

Bought 915 shs ($12K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	915	$12.76	$12K

Holdings After Transaction: Common Stock — 20,915 shares (Indirect, By IRA)

Footnotes (1)

Key Figures

Shares purchased: 915 shares Purchase price: $12.76 per share Total shares after transaction: 20,915 shares +1 more

4 metrics

Shares purchased 915 shares Common Stock, open-market purchase on May 26, 2026

Purchase price $12.76 per share Open-market purchase of Winchester Bancorp common stock

Total shares after transaction 20,915 shares Indirect holdings by IRA following the reported transaction

Transaction type Open-market purchase (Code P) Non-derivative transaction in common stock

Key Terms

open-market purchase, indirect ownership, Form 4, Common Stock

4 terms

open-market purchase financial

"transaction_action: "open-market purchase""

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

indirect ownership financial

"direct_or_indirect: "I" with nature_of_ownership: "By IRA""

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Merritt Edward J

(Last) (First) (Middle)

661 MAIN STREET

(Street)

WINCHESTER MASSACHUSETTS 01890

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Winchester Bancorp, Inc./MD/ [ WSBK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/26/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/26/2026		P		915	A	$12.76	20,915	I	By IRA

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Edward A. Quint, pursuant to power of attorney	05/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Winchester Bancorp (WSBK) disclose?

Winchester Bancorp disclosed that director Merritt Edward J made an indirect open-market purchase of 915 common shares at $12.76 per share through an IRA, increasing his indirect holdings to 20,915 shares.

Who is the insider involved in the latest WSBK Form 4 filing?

The insider is Merritt Edward J, a director of Winchester Bancorp, Inc. He reported an indirect open-market purchase of 915 common shares of WSBK at $12.76 per share, held through an IRA account.

How many Winchester Bancorp (WSBK) shares did the director buy and at what price?

Director Merritt Edward J bought 915 shares of Winchester Bancorp common stock at a price of $12.76 per share in an open-market transaction reported on the Form 4 filing.

What are Merritt Edward J’s total indirect holdings in WSBK after this transaction?

After the reported transaction, director Merritt Edward J indirectly holds 20,915 shares of Winchester Bancorp common stock. These shares are reported as being held "By IRA", indicating ownership through an individual retirement account.

Is the Winchester Bancorp (WSBK) insider transaction a buy or a sell?

The transaction is a buy. The Form 4 shows a transaction code "P", described as an open-market purchase, with 915 common shares acquired at $12.76 per share and no reported sales in this filing.