[Form 4] Avidia Bancorp, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Avidia Bancorp insider reported purchases and a sale on 08/15/2025. Robert D. Cozzone, President & CEO and a director, acquired 6,840 shares of Avidia Bancorp common stock at $14.6197 per share and now beneficially owns 13,786 shares, including indirect holdings via a 401(k). He also disposed of 1,000 shares. The Form 4 was signed via power of attorney on 08/18/2025.

Positive

• Material insider purchase: Acquisition of 6,840 common shares at $14.6197 indicates a CEO/director buy.
• Clear beneficial ownership disclosure: Reporting shows total beneficial ownership of 13,786 shares and identifies indirect holdings via a 401(k).

Negative

• Partial disposition: Disposal of 1,000 shares on the same transaction date reduces net shares acquired.
• Limited context: Filing contains no information on rationale, aggregate transaction value beyond per-share price, or post-transaction ownership percentage.

Insights

Securities Analyst

TL;DR: CEO/director net buyer of company stock; purchase and small sale reported, signaling insider activity.

Robert D. Cozzone, serving as both President & CEO and a director, reported a purchase of 6,840 common shares at $14.6197 and a contemporaneous disposition of 1,000 shares, resulting in 13,786 shares beneficially owned after the transactions. The purchase was executed on 08/15/2025 and the filing bears a signature via power of attorney on 08/18/2025. For investors, insider purchases by senior executives can be notable; this filing documents explicit quantities, price, and ownership form, including indirect holdings via a 401(k).

Corporate Governance Expert

TL;DR: Properly filed Form 4 shows combined officer/director trades and clear disclosure of indirect ownership.

The report discloses that the reporting person holds dual roles (President & CEO and director) and that some holdings are indirect (401(k)). The filing follows Section 16 requirements and includes a dated signature executed by an attorney-in-fact. No derivatives or other complex instruments are reported. The disclosure is straightforward and complete based on the provided content.

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)
08/15/2025

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	08/15/2025		P		6,840	A	$14.6197	13,786	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	08/18/2025
	** 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 transactions did AVBC insider Robert D. Cozzone report on the Form 4?

He reported an acquisition of 6,840 common shares at $14.6197 per share and a disposition of 1,000 shares, both dated 08/15/2025.

How many Avidia Bancorp shares does the reporting person beneficially own after the transactions?

The Form 4 shows beneficial ownership of 13,786 shares following the reported transactions.

What roles does the reporting person hold at AVBC?

The reporting person, Robert D. Cozzone, is identified as both a Director and the company's President & CEO.

Was the Form 4 filing signed directly by the reporting person?

The signature block shows the form was executed by power of attorney (/s/ Victor L. Cangelosi) on 08/18/2025.

Does the filing report any derivative securities or option exercises?

No; Table II for derivative securities contains no reported transactions in the provided content.