Avidia Bancorp (AVBC) CEO Cozzone adds 6,631 shares in open-market buy

Rhea-AI Filing Summary

Avidia Bancorp, Inc. insider trade: President and CEO Robert D. Cozzone reported an open-market purchase of 6,631 shares of Avidia Bancorp common stock on August 26, 2025 at an average price of $15.0806 per share. The purchased shares are held indirectly through a 401(k) account, bringing his indirectly held position to 27,088 shares. Separately, he also reports direct ownership of 1,000 common shares.

Insider Trade Summary

Net Buyer: 6,631 shares ($99,999)

Net Buy 2 txns

Insider Cozzone Robert D

Role President & CEO

Bought 6,631 shs ($100K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	6,631	$15.0806	$100K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 27,088 shares (Indirect, By 401(k)); Common Stock — 1,000 shares (Direct)

Footnotes (1)

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^*

Cozzone Robert D

(Last) (First) (Middle)

42 MAIN ST

(Street)

HUDSON MA 01749

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Avidia Bancorp, Inc. [ AVBC ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
08/26/2025

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	08/26/2025		P		6,631	A	$15.0806	27,088	I	By 401(k)
Common Stock								1,000	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/ Victor L. Cangelosi, pursuant to power of attorney	08/27/2025
	** 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 insider transaction did Avidia Bancorp (AVBC) report in this Form 4?

Avidia Bancorp reported an insider share purchase by President and CEO Robert D. Cozzone. He acquired 6,631 shares of common stock in an open-market transaction, adding to his existing holdings and updating his beneficial ownership disclosure.

How many Avidia Bancorp (AVBC) shares did the CEO buy and at what price?

The CEO bought 6,631 AVBC common shares at an average price of $15.0806 per share. This open-market purchase increased his indirectly held position in the company through a 401(k) account.

How many Avidia Bancorp (AVBC) shares does the CEO beneficially own after this transaction?

After the transaction, the CEO reports 27,088 shares of Avidia Bancorp common stock held indirectly through a 401(k) and an additional 1,000 shares held directly, as reflected in the updated beneficial ownership figures.

What was the nature of the Avidia Bancorp (AVBC) insider transaction on August 26, 2025?

The transaction was an open-market purchase of Avidia Bancorp common stock. The Form 4 classifies it under transaction code “P,” indicating a purchase in the open market or a private transaction on that date.

Are the newly purchased Avidia Bancorp (AVBC) shares held directly by the CEO?

The newly acquired 6,631 AVBC shares are held indirectly via a 401(k) account. The filing separately lists 1,000 shares as directly owned by the CEO, distinguishing direct and indirect beneficial ownership.

What role does Robert D. Cozzone hold at Avidia Bancorp (AVBC)?

Robert D. Cozzone is reported as President and CEO of Avidia Bancorp and also serves as a director. His insider status requires reporting changes in his beneficial ownership of the company’s common stock on Form 4.