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

Rhea-AI Filing Summary

Robert D. Cozzone, President & CEO and director of Avidia Bancorp (AVBC), reported insider transactions on Form 4. The filing shows an acquisition of 3,436 shares of Avidia common stock on 08/13/2025 at a price of $14.5516 per share, increasing reported beneficial ownership to 6,946 shares held indirectly through a 401(k). The filing also records a separate disposition of 1,000 shares. The report was signed on 08/15/2025 by an authorized agent.

Positive

• Insider purchase disclosed: CEO acquired 3,436 shares at $14.5516, indicating management ownership interest.
• Proper disclosure and signature: Form 4 was signed by an authorized agent on 08/15/2025.

Negative

• None.

Insights

Securities Analyst

TL;DR: CEO reported a net acquisition of company stock, modest in size but signals management ownership.

The Form 4 discloses a purchase of 3,436 common shares at $14.5516 and a disposition of 1,000 shares, resulting in 6,946 shares beneficially owned indirectly via a 401(k). For an investor-focused securities analyst, this is a routine Section 16 filing showing insider activity by the President & CEO. The absolute sizes are small relative to typical market-capitalization impacts, so this is informational rather than material to valuation models.

Corporate Governance Expert

TL;DR: Insider transaction is disclosed and properly signed; no governance red flags apparent from this filing.

The report lists the reporting person as both an officer (President & CEO) and a director and shows transactions executed on 08/13/2025 with the Form 4 filed/signed on 08/15/2025 by an authorized attorney-in-fact. The transactions include an acquisition and a separate disposition; the filing includes an indirect ownership disclosure (401(k)). There are no amendments, unusual codes, or unexplained derivative positions noted in the document.

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)
08/13/2025

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	08/13/2025		P		3,436	A	$14.5516	6,946	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	08/15/2025
	** 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 AVBC insider Robert D. Cozzone report on Form 4?

He reported an acquisition of 3,436 shares at $14.5516 on 08/13/2025 and a disposition of 1,000 shares, with 6,946 shares beneficially owned indirectly after the transactions.

What is the reporting person's role at Avidia Bancorp (AVBC)?

The reporting person is listed as both a Director and the President & CEO of Avidia Bancorp.

How was the ownership held according to the Form 4?

The filing indicates indirect ownership through a 401(k) plan for the reported 6,946 shares.

When were the transactions and when was the Form 4 signed?

Transactions occurred on 08/13/2025 and the Form 4 was signed by an authorized agent on 08/15/2025.