Avidia Bancorp (AVBC) director adds 450 shares in open-market buy

Rhea-AI Filing Summary

Avidia Bancorp, Inc. director Michael R. Girard reported an open-market purchase of 450 shares of common stock at $18.802 per share. The shares are held indirectly through a Roth IRA, bringing his reported indirect holdings in this account to 975 shares after the transaction.

Insider Trade Summary

Net Buyer: 450 shares

Net Buy 1 txn

Insider Girard Michael R

Role Director

Bought 450 shs ($8K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	450	$18.802	$8K

Holdings After Transaction: Common Stock — 975 shares (Indirect, By Roth IRA)

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 03/13/2026 - 12:01 PM Learn about SEC filing dates

FAQ

What insider transaction did Avidia Bancorp (AVBC) disclose?

Avidia Bancorp disclosed that director Michael R. Girard bought 450 common shares in an open-market transaction at $18.802 per share. The purchase was reported on a Form 4 and reflects an increase in his indirectly held shares through a retirement account.

At what price did the Avidia Bancorp (AVBC) director buy shares?

The director purchased Avidia Bancorp common stock at $18.802 per share. This price comes from a single open-market transaction for 450 shares, as disclosed in the Form 4 insider trading report filed for Michael R. Girard.

How many Avidia Bancorp (AVBC) shares does the director hold after this trade?

After the reported transaction, Michael R. Girard indirectly holds 975 Avidia Bancorp common shares in the referenced Roth IRA. This figure is given as the total shares following the transaction in the Form 4 insider ownership table.

Was the Avidia Bancorp (AVBC) insider transaction a buy or a sell?

The reported Avidia Bancorp insider transaction was a purchase. Director Michael R. Girard executed an open-market buy of 450 common shares, classified under transaction code “P” for purchase in the Form 4 filing with the SEC.

How is the Avidia Bancorp (AVBC) director’s ownership held after the transaction?

The director’s reported holdings are indirect, held through a Roth IRA. The Form 4 specifies nature of ownership as “By Roth IRA,” showing 975 Avidia Bancorp common shares attributed to this retirement account after the latest purchase.

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^*

Girard Michael R

(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)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/12/2026

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	03/12/2026		P		450	A	$18.802	975	I	By Roth IRA

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	03/13/2026
	** 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.