[Form 4] GREENE COUNTY BANCORP INC Insider Trading Activity

Rhea-AI Filing Summary

Greene County Bancorp (GCBC) director Jay P. Cahalan reported multiple open‑market purchases on 10/24/2025 (Code P). He acquired a total of 4,300 shares at prices ranging from $22.58 to $22.82.

Following these transactions, Cahalan directly owns 35,424 shares of GCBC common stock.

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^*

Cahalan Jay P.

(Last) (First) (Middle)

302 MAIN STREET

(Street)

CATSKILL NY 12414

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
GREENE COUNTY BANCORP INC [ GCBC ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
10/24/2025

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

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

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

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	10/24/2025		P		150	A	$22.69	31,274	D
Common Stock	10/24/2025		P		600	A	$22.75	31,874	D
Common Stock	10/24/2025		P		101	A	$22.78	31,975	D
Common Stock	10/24/2025		P		1,700	A	$22.82	33,675	D
Common Stock	10/24/2025		P		27	A	$22.6	33,702	D
Common Stock	10/24/2025		P		10	A	$22.62	33,712	D
Common Stock	10/24/2025		P		500	A	$22.67	34,212	D
Common Stock	10/24/2025		P		402	A	$22.72	34,614	D
Common Stock	10/24/2025		P		810	A	$22.58	35,424	D

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/ Jay P. Cahalan	10/24/2025
	** 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.

FAQ

What did GCBC director Jay P. Cahalan report on Form 4?

He disclosed open‑market purchases totaling 4,300 GCBC shares on 10/24/2025 at prices between $22.58 and $22.82.

What is Jay P. Cahalan’s GCBC share ownership after the trades?

He directly owns 35,424 shares following the reported transactions.

What transaction code was used for the GCBC trades?

The transactions were reported with Code P, indicating open‑market or private purchases.

What were the individual GCBC purchase prices on 10/24/2025?

Reported prices included $22.58, $22.60, $22.62, $22.67, $22.69, $22.72, $22.75, $22.78, and $22.82.

Were any derivative securities reported for GCBC?

No. Table II shows no derivative securities reported.

Is the ownership form direct or indirect?

Post‑transaction ownership is reported as Direct (D).