Avidia Bancorp CEO buys 2,128 shares at $18.80

Avidia Bancorp, Inc. President & CEO Robert D. Cozzone reported an open-market purchase of 2,128 shares of common stock at $18.80 per share, acquired indirectly through a 401(k) plan.

Rhea-AI Filing Summary

Avidia Bancorp, Inc. President & CEO Robert D. Cozzone reported an open-market purchase of 2,128 shares of common stock at $18.80 per share, acquired indirectly through a 401(k) plan. Following this transaction, the 401(k) holding stands at 67,357 shares of Avidia Bancorp common stock.

The Form 4 also shows 1,096 shares held indirectly through an ESOP and 1,000 shares held directly, giving investors a clearer view of Cozzone’s overall equity position in the company.

Insider Trade Summary

Net Buyer: 2,128 shares

Net Buy 3 txns

Insider Cozzone Robert D

Role President & CEO

Bought 2,128 shs ($40K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	2,128	$18.80	$40K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 67,357 shares (Indirect, By 401(k)); Common Stock — 1,000 shares (Direct); Common Stock — 1,096 shares (Indirect, By ESOP)

Key Figures

Open-market purchase size: 2,128 shares Purchase price: $18.80 per share 401(k) holdings after purchase: 67,357 shares +3 more

6 metrics

Open-market purchase size 2,128 shares Common Stock bought on 2026-05-29

Purchase price $18.80 per share Open-market purchase on 2026-05-29

401(k) holdings after purchase 67,357 shares Indirect ownership by 401(k) after transaction

ESOP holdings 1,096 shares Indirect ownership by ESOP as of 2026-05-29

Direct holdings 1,000 shares Direct ownership as of 2026-05-29

Net buy shares 2,128 shares Net buy direction in transaction summary

Key Terms

open-market purchase, 401(k), ESOP, indirect ownership, +1 more

5 terms

open-market purchase financial

"transaction_action": "open-market purchase""

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.

401(k) financial

"nature_of_ownership": "By 401(k)""

A 401(k) is a type of retirement savings plan offered by employers that allows workers to set aside a portion of their paycheck before taxes are taken out. The money saved in a 401(k) can grow over time through investments, helping individuals build funds for their future retirement. It matters to investors because it provides a tax-advantaged way to save and invest for long-term financial security.

ESOP financial

"nature_of_ownership": "By ESOP""

An Employee Stock Ownership Plan (ESOP) is a program that gives employees ownership shares in their company, often as part of their benefits package. It acts like a company-sponsored savings plan, allowing workers to have a stake in the company's success, which can boost motivation and loyalty. For investors, ESOPs can influence company decisions and stock value, making them an important aspect of corporate ownership and governance.

indirect ownership financial

"ownership_type": "indirect""

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

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.

FAQ

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

What insider transaction did Avidia Bancorp (AVBC) report on this Form 4?

Avidia Bancorp reported that President & CEO Robert D. Cozzone bought 2,128 shares of common stock at $18.80 per share through a 401(k) plan. The filing classifies this as an open-market or private purchase transaction.

How many Avidia Bancorp (AVBC) shares does the CEO hold after this transaction?

After the reported transaction, Robert D. Cozzone holds 67,357 Avidia Bancorp shares indirectly through a 401(k) plan, 1,096 shares indirectly through an ESOP, and 1,000 shares directly. These figures come from the post-transaction balances disclosed in the Form 4.

Was the Avidia Bancorp (AVBC) CEO trade a buy or a sell?

The Form 4 shows a buy transaction. Robert D. Cozzone executed an open-market purchase of 2,128 Avidia Bancorp common shares at $18.80 each, reported with transaction code P, which indicates a purchase in the open market or a private transaction.

At what price did the Avidia Bancorp (AVBC) CEO purchase shares?

Robert D. Cozzone purchased 2,128 Avidia Bancorp common shares at $18.80 per share. This per-share price is explicitly listed for the non-derivative transaction reported on the Form 4, which is classified as an open-market or private purchase.

How are the Avidia Bancorp (AVBC) CEO’s holdings split between direct and indirect ownership?

The Form 4 shows 1,000 Avidia Bancorp shares held directly by Robert D. Cozzone. Indirectly, he reports 1,096 shares held through an ESOP and 67,357 shares held via a 401(k) plan, highlighting multiple forms of equity-based ownership.

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

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Accepted by SEC EDGAR 06/01/2026 - 01:43 PM EDT Learn about SEC filing dates

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^*

Cozzone Robert D

(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
X	Officer (give title below)		Other (specify below)
	President & CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026

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	05/29/2026		P		2,128	A	$18.8	67,357	I	By 401(k)
Common Stock								1,000	D
Common Stock								1,096	I	By ESOP

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	06/01/2026
	** 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)