Avidia Bancorp (AVBC) insider buys 6,230 AVBC shares

Rhea-AI Filing Summary

Avidia Bancorp, Inc. reported an insider transaction involving its Chairman of the Board, who is also a director. On 12/01/2025, an indirect purchase of 6,230 shares of Avidia Bancorp common stock was made at a price of $15.9986 per share through the reporting person’s spouse’s IRA. After this transaction, the spouse’s IRA held 7,230 shares indirectly, while the reporting person also held 49,000 shares directly and 20,000 shares indirectly through an LLC.

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
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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^*

Murphy Michael Dennis

(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
	Officer (give title below)	X	Other (specify below)
			Chairman of the Board

3. Date of Earliest Transaction (Month/Day/Year)
12/01/2025

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	12/01/2025		P		6,230	A	$15.9986	7,230	I	By Spouse's IRA
Common Stock								49,000	D
Common Stock								20,000	I	By LLC

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	12/03/2025
	** 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) disclose in this Form 4?

The filing shows an indirect purchase of 6,230 shares of Avidia Bancorp common stock on 12/01/2025 through the reporting person’s spouse’s IRA.

At what price were the Avidia Bancorp (AVBC) shares acquired in the reported transaction?

The 6,230 shares of Avidia Bancorp common stock were purchased at a price of $15.9986 per share.

What is the reporting person’s relationship to Avidia Bancorp (AVBC)?

The reporting person is a director of Avidia Bancorp, Inc. and is also listed as Chairman of the Board.

How many Avidia Bancorp (AVBC) shares are now held in the spouse’s IRA?

Following the reported transaction, the spouse’s IRA holds 7,230 shares of Avidia Bancorp common stock as indirect beneficial ownership.

How many Avidia Bancorp (AVBC) shares does the insider hold directly and through an LLC?

The insider holds 49,000 shares of Avidia Bancorp common stock directly and 20,000 shares indirectly through an LLC.

Is this Avidia Bancorp (AVBC) Form 4 filed by one or multiple reporting persons?

The document indicates that it is a Form filed by One Reporting Person, not a joint filing.