Avidia Bancorp (AVBC) adds Michael O. Gilles to board and Audit Committee

Rhea-AI Filing Summary

Avidia Bancorp, Inc. reported that on September 25, 2025 it appointed Michael O. Gilles to its Board of Directors, in the director class with terms expiring in 2028. Avidia Bank, the company’s bank subsidiary, also appointed Mr. Gilles to its Board of Directors.

The company states that there is no arrangement or understanding with any other person under which Mr. Gilles was selected as a director, and that there have been no transactions since the beginning of the last fiscal year, and no proposed transactions, involving more than $120,000 in which Mr. Gilles had or will have a direct or indirect material interest. Mr. Gilles has been appointed to serve on the Audit Committee of the company’s Board of Directors.

8-K Event Classification

2 items: 5.02, 9.01

2 items

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers Governance

Key personnel changes including departures, elections, or appointments of directors and executive officers.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Understanding 8-K Material Events →

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):  September 25, 2025

Avidia Bancorp, Inc.

(Exact Name of Registrant as Specified in its Charter)

Maryland		001-42775		33-4239888
(State or Other Jurisdiction of Incorporation)		(Commission File No.)		(I.R.S. Employer Identification No.)
42 Main Street, Hudson, Massachusetts					01749
(Address of Principal Executive Offices)					(Zip Code)

(800) 508-2265

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Common stock, $0.01 par value per share		AVBC		The New York Stock Exchange
Title of Each Class		Trading Symbol(s)		Name of Each Exchange on Which Registered

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.

Emerging growth company  ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On September 25, 2025, Avidia Bancorp, Inc. (the “Company”) appointed Michael O. Gilles to its Board of Directors, to serve in the class of Directors with terms expiring in 2028.  Avidia Bank, the Company’s bank subsidiary, also appointed Mr. Gilles to serve on its Board of Directors.  For further information, reference is made to the press release dated September 25, 2025, a copy of which is attached as an exhibit hereto and incorporated herein by reference.

There is no arrangement or understanding between Mr. Gilles and any other person pursuant to which he was selected as a Director.

Mr. Gilles has been appointed to serve on the Audit Committee of the Company’s Board of Directors.

There are no transaction since the beginning of the Company’s last fiscal year, or any currently proposed transactions, in which the Company was or is to be a participant and the amount involved exceeds $120,000, and in which Mr. Gilles had or will have a direct or indirect material interest.

Item 9.01
Financial Statements and Exhibits.

(d) Exhibits

Exhibit No. Description

99.1 Press Release dated September 25, 2025

104 Cover Page Interactive Data File (Embedded within Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

		Avidia Bancorp, Inc.
Date: September 25, 2025	By:	/s/ Robert D. Cozzone
		Robert D. Cozzone
		President and Chief Executive Officer

FAQ

What did Avidia Bancorp, Inc. (AVBC) announce in this 8-K?

The company announced that on September 25, 2025, it appointed Michael O. Gilles to its Board of Directors, with his term expiring in 2028.

What role will Michael O. Gilles have at Avidia Bancorp, Inc. (AVBC)?

Michael O. Gilles has been appointed as a member of the Board of Directors of Avidia Bancorp, Inc. and will also serve on the Board of Directors of its subsidiary, Avidia Bank.

Will Michael O. Gilles serve on any board committees at Avidia Bancorp (AVBC)?

Yes. The company states that Mr. Gilles has been appointed to serve on the Audit Committee of Avidia Bancorp, Inc.’s Board of Directors.

Is there any special arrangement under which Michael O. Gilles was chosen as a director at AVBC?

No. Avidia Bancorp, Inc. states there is no arrangement or understanding between Mr. Gilles and any other person pursuant to which he was selected as a director.

Does Avidia Bancorp (AVBC) report any related-party transactions involving Michael O. Gilles?

The company states there are no transactions since the beginning of the last fiscal year, and no currently proposed transactions, where the amount exceeds $120,000 and in which Mr. Gilles had or will have a direct or indirect material interest.

Where can investors find more information about the Michael O. Gilles appointment at AVBC?

Avidia Bancorp, Inc. refers to a press release dated September 25, 2025, which is attached as an exhibit and incorporated by reference for further information.