GCBC director buys 1,129 shares; direct stake 3,078

Greene County Bancorp (GCBC): Director share purchases reported.

Rhea-AI Filing Summary

Greene County Bancorp (GCBC): Director share purchases reported. Director Steven Lanter bought 706 shares at $22.91 on 10/28/2025 and 423 shares at $22.79 on 10/29/2025. Following these open-market purchases, he directly owns 3,078 shares. He also reports indirect holdings of 38 shares as custodian for children and 310 shares in a 401(k).

Insider Trade Summary

Net Buyer: 1,129 shares

Net Buy 4 txns

Insider Cannucciari Christopher

Role Director

Bought 1,129 shs ($26K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	423	$22.79	$10K
Purchase	Common Stock	706	$22.91	$16K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 3,078 shares (Direct); Common Stock — 38 shares (Indirect, As custodian for children); Common Stock — 310 shares (Indirect, 401(k))

FAQ

What insider activity did GCBC report on Form 4?

Director Steven Lanter purchased 706 shares at $22.91 on 10/28/2025 and 423 shares at $22.79 on 10/29/2025.

How many GCBC shares does the director own directly after the trades?

He directly owns 3,078 shares after the reported transactions.

What indirect GCBC holdings were disclosed?

He reports 38 shares as custodian for children and 310 shares in a 401(k).

What were the purchase prices for the GCBC shares?

Purchases were reported at $22.91 on 10/28/2025 and $22.79 on 10/29/2025.

What is the reporting person’s relationship to GCBC?

He is a Director of Greene County Bancorp, Inc.

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Accepted by SEC EDGAR 10/30/2025 - 06:39 PM Learn about SEC filing dates

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^*

Cannucciari Christopher

(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)
10/28/2025

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	10/28/2025		P		706	A	$22.91	2,655	D
Common Stock	10/29/2025		P		423	A	$22.79	3,078	D
Common Stock								38	I	As custodian for children
Common Stock								310	I	401(k)

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/ Steven Lanter, pursuant to power of attorney	10/30/2025
	** 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.