[Form 4] Avidia Bancorp, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Robert D. Cozzone, President & CEO and Director of Avidia Bancorp (AVBC), reported insider transactions on Form 4. On 08/20/2025 he purchased 6,671 shares of Avidia Bancorp common stock at $14.9886 per share, increasing his beneficial ownership to 20,457 shares held indirectly through a 401(k). The filing also records a disposition of 1,000 shares (no transaction date shown for that disposition in the provided text). The Form 4 was signed via power of attorney on 08/21/2025 and was filed as a single reporting person report.

Positive

• Insider purchase disclosed: 6,671 shares acquired at $14.9886 on 08/20/2025
• Increased beneficial ownership: total reported beneficial ownership of 20,457 shares held indirectly via a 401(k)

Negative

• Disposition recorded: 1,000 shares disposed (no transaction date shown in provided content)
• Timing ambiguity: the 1,000-share disposal lacks an explicit date in the excerpt, limiting clarity

Insights

Financial Analyst

TL;DR: Insider purchase of 6,671 shares at $14.9886 is disclosed; overall impact appears routine.

The purchase increases the reporting persons indirect holdings to 20,457 shares via a 401(k), reflecting an insider acquisition rather than dilution or option exercise. The reported price per share provides a clear cost basis for this incremental ownership. The separate 1,000-share disposition is recorded but lacks a transaction date in the provided content, limiting interpretability. Given the size and the absence of additional context, this filing looks like routine insider activity rather than a material corporate event.

Corporate Governance Expert

TL;DR: CEO and Director reported both a purchase and a disposition; disclosure appears properly filed but one entry is missing a date.

The filing identifies the reporting person as both President & CEO and a Director, and shows a purchase coded P on 08/20/2025 with subsequent beneficial ownership reported. The Form was signed by a power of attorney on 08/21/2025, which is an acceptable procedural detail. However, the disposal of 1,000 shares is listed without an explicit transaction date in the provided excerpt, which reduces clarity about timing. The disclosure otherwise conforms to Section 16 reporting format in the supplied text.

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

3. Date of Earliest Transaction (Month/Day/Year)
08/20/2025

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	08/20/2025		P		6,671	A	$14.9886	20,457	I	By 401(k)
Common Stock								1,000	D

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	08/21/2025
	** 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 transactions were reported for AVBC on this Form 4?

The filing shows a purchase of 6,671 shares at $14.9886 on 08/20/2025 and a reported disposition of 1,000 shares (no date provided for the disposal in the supplied text).

How many Avidia Bancorp (AVBC) shares does Robert D. Cozzone beneficially own after the reported transaction?

The Form 4 reports 20,457 shares beneficially owned following the reported purchase, held indirectly through a 401(k).

What is Robert D. Cozzones role at Avidia Bancorp as shown on the filing?

The filing lists him as a Director and as an Officer with the title President & CEO.

When was the Form 4 signed or filed according to the document?

The signature block shows the form was signed via power of attorney on 08/21/2025.

Was the purchase coded under a specific transaction code?

Yes, the purchase is coded as P in the filing, associated with the 08/20/2025 transaction.