Avidia Bancorp (AVBC) chair buys 1,850 shares via spouse

Rhea-AI Filing Summary

Michael Dennis Murphy, Chairman of the Board of Avidia Bancorp, Inc., reported an insider purchase of company stock. On April 28, 2026, an account attributed to his spouse bought 1,850 shares of Avidia Bancorp common stock in an open-market transaction at $20.94 per share, reported as indirect ownership.

After this trade, the filing shows 1,850 shares held indirectly by his spouse, 7,230 shares held indirectly through his spouse's IRA, 20,000 shares held indirectly through an LLC, and 49,000 shares held directly in his own name.

Insider Trade Summary

Net Buyer: 1,850 shares ($38,739)

Net Buy 4 txns

Insider Murphy Michael Dennis

Role null

Bought 1,850 shs ($39K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	1,850	$20.94	$39K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 1,850 shares (Indirect, By Spouse); Common Stock — 49,000 shares (Direct, null)

Footnotes (1)

Key Figures

Indirect purchase size: 1,850 shares Purchase price: $20.94 per share Indirect holdings by spouse post-transaction: 1,850 shares +4 more

7 metrics

Indirect purchase size 1,850 shares Open-market purchase on April 28, 2026, by spouse

Purchase price $20.94 per share Price for 1,850 indirectly purchased common shares

Indirect holdings by spouse post-transaction 1,850 shares Common stock held indirectly by spouse after trade

Indirect holdings via spouse's IRA 7,230 shares Common stock held indirectly through spouse's IRA

Indirect holdings via LLC 20,000 shares Common stock held indirectly through LLC

Direct holdings 49,000 shares Common stock held directly by Michael Dennis Murphy

Net buy-sell shares 1,850 shares Net result of reported buy/sell activity in this filing

Key Terms

open-market purchase, indirect ownership, IRA, Form 4

4 terms

open-market purchase financial

"an account attributed to his spouse bought 1,850 shares of Avidia Bancorp common stock in an open-market transaction"

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

indirect ownership financial

"the shares were bought indirectly through his spouse and are reported as indirect ownership"

IRA financial

"7,230 shares held indirectly through his spouse's IRA"

An individual retirement account (IRA) is a savings account designed to help people put aside money for their retirement, often with tax advantages that encourage long-term savings. It matters to investors because it can grow over time, providing financial security later in life, and offers benefits that can reduce current taxes or allow investments to compound more effectively.

Form 4 regulatory

"According to the Form 4, Michael Dennis Murphy holds 49,000 Avidia Bancorp common shares directly"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Form 4 Insider Transactions: What Each Field Means →

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)
04/28/2026

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	04/28/2026		P		1,850	A	$20.94	1,850	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	04/29/2026
	** 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)

FAQ

What insider transaction did Avidia Bancorp (AVBC) report for Michael Dennis Murphy?

Avidia Bancorp reported that Chairman Michael Dennis Murphy was associated with an open-market purchase of 1,850 common shares. The shares were bought indirectly through his spouse on April 28, 2026, and are reported as indirect ownership rather than held directly by him.

At what price were the new Avidia Bancorp (AVBC) shares purchased?

The filing shows an open-market purchase of 1,850 Avidia Bancorp common shares at $20.94 per share. This price applies to the indirect transaction attributed to Murphy’s spouse, as disclosed in the Form 4 for April 28, 2026.

How many Avidia Bancorp (AVBC) shares does Michael Dennis Murphy now hold directly?

According to the Form 4, Michael Dennis Murphy holds 49,000 Avidia Bancorp common shares directly after the reported transactions. This figure reflects his direct ownership position as of April 28, 2026, separate from any indirect holdings.

What indirect Avidia Bancorp (AVBC) holdings are reported for Michael Dennis Murphy?

The filing lists several indirect holdings: 1,850 shares held by his spouse, 7,230 shares held through his spouse's IRA, and 20,000 shares held via an LLC. These positions are reported as indirect ownership interests related to Murphy.

Was the Avidia Bancorp (AVBC) insider transaction a purchase or sale?

The Form 4 reports a purchase transaction. Specifically, there was an open-market purchase of 1,850 Avidia Bancorp common shares at $20.94 per share, categorized as an indirect buy through Michael Dennis Murphy’s spouse.