Avidia Bancorp chair buys 5,000 shares at $22

Avidia Bancorp, Inc. (AVBC) director and Chairman of the Board Michael Dennis Murphy reported an open‑market purchase of 5,000 shares of Common Stock on September 14, 2026 at $22.12 per share, held indirectly through his spouse.

Available on EDGAR 09/16/2026 - 08:48 AM EDT Accepted by SEC EDGAR 09/16/2026 - 08:47 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Avidia Bancorp, Inc. (AVBC) director and Chairman of the Board Michael Dennis Murphy reported an open‑market purchase of 5,000 shares of Common Stock on September 14, 2026 at $22.12 per share, held indirectly through his spouse. That spouse account now holds 6,850 shares. On the same date, Murphy also reported 49,000 shares held directly, 20,000 shares held indirectly through an LLC, and 7,230 shares held indirectly through his spouse’s IRA.

Insider Trade Summary

Net Buyer: 5,000 shares

Net Buy 1 txn

Insider Murphy Michael Dennis

Role Director

Bought 5,000 shs ($111K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	5,000	$22.12	$111K
Holding	Common Stock	--	--	--
Holding	Common Stock	--	--	--
Holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 6,850 shares (Indirect, By Spouse); Common Stock — 49,000 shares (Direct); Common Stock — 20,000 shares (Indirect, By LLC); Common Stock — 7,230 shares (Indirect, By Spouse's IRA)

Key Figures

Shares purchased: 5,000 shares Purchase price per share: $22.12 per share Spouse indirect holdings: 6,850 shares +3 more

6 metrics

Shares purchased 5,000 shares Open‑market purchase on September 14, 2026

Purchase price per share $22.12 per share Open‑market purchase of 5,000 AVBC common shares

Spouse indirect holdings 6,850 shares Indirectly held through spouse after the September 14, 2026 purchase

Direct holdings 49,000 shares Shares held directly by Michael Dennis Murphy as of September 14, 2026

LLC indirect holdings 20,000 shares Shares held indirectly through an LLC as of September 14, 2026

Spouse’s IRA indirect holdings 7,230 shares Shares held indirectly through spouse’s IRA as of September 14, 2026

Key Terms

Indirect ownership, Open market or private transaction, By LLC, By Spouse's IRA

4 terms

Indirect ownership financial

"held indirectly through his spouse"

Open market or private transaction financial

"Purchase in open market or private transaction"

By LLC financial

"held indirectly through an LLC"

By Spouse's IRA financial

"held indirectly through spouse’s IRA"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did AVBC’s chairman report on September 14, 2026?

He reported an open‑market purchase of 5,000 AVBC common shares on September 14, 2026 at $22.12 per share, held indirectly through his spouse.

How many AVBC shares does Michael Dennis Murphy’s spouse hold after this transaction?

Following the purchase, the filing shows Murphy’s spouse holding 6,850 AVBC common shares indirectly attributable to him.

What are Michael Dennis Murphy’s direct AVBC share holdings?

As of the reported date, Murphy is shown holding 49,000 AVBC common shares directly in his own name.

What indirect AVBC holdings does Michael Dennis Murphy report through entities?

The filing lists 20,000 AVBC shares held indirectly by an LLC associated with him and 7,230 shares held indirectly by his spouse’s IRA.

Was the AVBC insider purchase made under a Rule 10b5-1 trading plan?

The Rule 10b5‑1 checkbox is not affirmed for this Form 4, and no footnote indicates a trading plan, so the transaction is not reported as made under a Rule 10b5‑1 plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

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 MASSACHUSETTS 01749

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/14/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	09/14/2026		P		5,000	A	$22.12	6,850	I	By Spouse
Common Stock								49,000	D
Common Stock								20,000	I	By LLC
Common Stock								7,230	I	By Spouse's 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	09/16/2026
	** 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.
* Form 4: SEC 1474 (03-26)