Avidia Bancorp insider reports open‑market buys near $15

Rhea-AI Filing Summary

Avidia Bancorp, Inc. (AVBC) reported insider share purchases on a Form 4. A director who also serves as Chairman of the Board bought common stock in open‑market transactions: 6,500 shares at $15.125 on 11/05/2025, 1,000 shares at $15.10 on 11/06/2025, and 2,500 shares at $15.105 on 11/07/2025.

Following these trades, beneficial ownership is listed as 49,000 shares direct, plus 1,000 shares indirect by spouse’s IRA and 20,000 shares indirect by LLC. No derivative securities were reported.

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^*

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)
11/05/2025

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	11/05/2025		P		6,500	A	$15.125	46,500	D
Common Stock	11/07/2025		P		2,500	A	$15.105	49,000	D
Common Stock	11/06/2025		P		1,000	A	$15.1	1,000	I	By Spouse's IRA
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	11/07/2025
	** 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 activity did AVBC report on Form 4?

An AVBC director and Chairman of the Board reported open‑market purchases of 6,500 shares at $15.125 (11/05/2025), 1,000 at $15.10 (11/06/2025), and 2,500 at $15.105 (11/07/2025).

How many AVBC shares does the insider own after the transactions?

Beneficial ownership is reported as 49,000 shares direct, plus 1,000 shares indirect by spouse’s IRA and 20,000 shares indirect by LLC.

Were the AVBC trades open‑market purchases?

Yes. The transactions are coded “P,” indicating open‑market purchases of common stock.

Did the filing report any derivative securities?

No derivative securities are listed in Table II for these transactions.

What is the insider’s relationship to AVBC?

The reporting person is a Director and holds the role of Chairman of the Board.

On which dates were the AVBC purchases made?

Purchases occurred on 11/05/2025, 11/06/2025, and 11/07/2025.