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

Rhea-AI Filing Summary

Michael N. Flanigan, a director of Avidia Bancorp (AVBC), reported multiple purchases of common stock on 08/08/2025 executed at prices between $14.38 and $14.49. The Form 4 shows purchases totaling 22,536 shares carried in an IRA, bringing those IRA holdings to 24,500 shares. He also reports indirect holdings of 13,334 shares via an LLC and 5,000 shares via an LLP, for a combined beneficial ownership of 42,834 shares. All listed transactions are coded "P" and no derivative securities are reported.

Insights

Securities Analyst

TL;DR: Director executed a series of purchases totaling 22,536 shares; holds 42,834 shares overall.

The filing documents nine non-derivative purchases on 08/08/2025 at prices ranging from $14.38 to $14.49, totaling 22,536 shares acquired into an IRA and raising the IRA balance to 24,500 shares. Additional indirect holdings shown are 13,334 shares via an LLC and 5,000 shares via an LLP, yielding aggregate beneficial ownership of 42,834 shares. Transactions are coded "P" in the form. No options, warrants, or other derivative securities are reported, so the change is limited to common stock exposure.

Corporate Governance Expert

TL;DR: Multiple insider purchases reported; holdings are a mix of direct IRA and indirect entity positions.

The report identifies Michael N. Flanigan as a director who increased his common stock position through a series of purchases executed on a single date. The holding structure is notable: primary additions were made into an IRA while meaningful indirect positions are held through an LLC and an LLP, totaling 42,834 shares. The disclosure is straightforward and contains no derivative positions or amendments; transactions carry code "P" as presented on the form.

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
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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^*

Flanigan Michael Neil

(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)
08/08/2025

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	08/08/2025		P		200	A	$14.38	2,164	I	By IRA
Common Stock	08/08/2025		P		699	A	$14.39	2,863	I	By IRA
Common Stock	08/08/2025		P		5,375	A	$14.4	8,238	I	By IRA
Common Stock	08/08/2025		P		637	A	$14.41	8,875	I	By IRA
Common Stock	08/08/2025		P		1,001	A	$14.45	9,876	I	By IRA
Common Stock	08/08/2025		P		201	A	$14.46	10,077	I	By IRA
Common Stock	08/08/2025		P		2,100	A	$14.47	12,177	I	By IRA
Common Stock	08/08/2025		P		6,000	A	$14.48	18,177	I	By IRA
Common Stock	08/08/2025		P		6,323	A	$14.49	24,500	I	By IRA
Common Stock								13,334	I	By LLC
Common Stock								5,000	I	By LLP

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	08/11/2025
	** 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 transactions did Michael Neil Flanigan report for AVBC?

He reported nine purchases on 08/08/2025 totaling 22,536 common shares, executed at prices between $14.38 and $14.49.

How many AVBC shares does the reporting person beneficially own after these transactions?

Total beneficial ownership reported is 42,834 shares: 24,500 in an IRA, 13,334 via an LLC, and 5,000 via an LLP.

What price range was paid for the AVBC shares?

Reported purchase prices range from $14.38 to $14.49 per share.

Were any derivative securities or options reported in this Form 4 for AVBC?

No derivative securities were reported; Table II is empty and only common stock transactions appear in Table I.

What is the reporting person's relationship to Avidia Bancorp (AVBC)?

Michael Neil Flanigan is reported as a Director of Avidia Bancorp.

What transaction code is shown for the reported trades?

All listed trades in Table I are shown with transaction code "P" as presented on the form.