STOCK TITAN

Avidia Bancorp (NASDAQ: AVBC) CFO buys 1,065 shares in open market

Filing Impact
(Neutral)
Filing Sentiment
(Positive)
Form Type
4

Rhea-AI Filing Summary

Avidia Bancorp, Inc. CFO and Treasurer Jonathan Michael Nelson reported a new open-market purchase of common stock. On June 3, 2026, he bought 1,065 shares at $18.8999 per share. After this transaction, he directly owns 14,545 shares and indirectly holds 22,378 shares through a 401(k) plan.

Positive

  • None.

Negative

  • None.
Insider Nelson Jonathan Michael
Role CFO and Treasurer
Bought 1,065 shs ($20K)
Type Security Shares Price Value
Purchase Common Stock 1,065 $18.8999 $20K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 14,545 shares (Direct, null); Common Stock — 22,378 shares (Indirect, By 401(k))
Footnotes (1)
Shares purchased 1,065 shares Open-market purchase on June 3, 2026
Purchase price per share $18.8999 per share Common Stock, open-market transaction
Direct holdings after transaction 14,545 shares Total Avidia Bancorp common shares held directly
Indirect 401(k) holdings 22,378 shares Common stock held indirectly by 401(k)
Net buy shares 1,065 shares Net buy in transaction summary, no sales reported
open-market purchase financial
"transaction_action: "open-market purchase" for the 1,065-share trade"
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.
Common Stock financial
"security_title: "Common Stock" for both reported holdings"
Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.
401(k) financial
"nature_of_ownership: "By 401(k)" describing indirect holdings"
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.
indirect ownership financial
"ownership_type: "indirect" for shares held by 401(k)"
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SEC Form 4
FORM 4UNITED 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*
Nelson Jonathan Michael

(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
CFO and Treasurer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/03/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock06/03/2026P1,065A$18.899914,545D
Common Stock22,378IBy 401(k)
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
/s/ Victor L. Cangelosi, pursuant to power of attorney06/03/2026
** Signature of Reporting PersonDate
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 Jonathan Michael Nelson?

Avidia Bancorp reported that CFO and Treasurer Jonathan Michael Nelson made an open-market purchase of its common stock. He bought 1,065 shares on June 3, 2026 at a price of $18.8999 per share.

How many Avidia Bancorp (AVBC) shares did the CFO buy and at what price?

CFO Jonathan Michael Nelson purchased 1,065 shares of Avidia Bancorp common stock. The reported purchase price was $18.8999 per share in an open-market transaction dated June 3, 2026, according to the Form 4 filing data.

What are Jonathan Michael Nelson’s direct holdings in Avidia Bancorp (AVBC) after the transaction?

Following the reported purchase, Jonathan Michael Nelson directly owns 14,545 shares of Avidia Bancorp common stock. This direct ownership figure is stated as the total shares following the open-market transaction on June 3, 2026 in the Form 4 data.

Does the Avidia Bancorp (AVBC) CFO have any indirect share holdings?

Yes. In addition to his direct shares, Jonathan Michael Nelson holds 22,378 shares of Avidia Bancorp common stock indirectly. These shares are reported as held “By 401(k)”, indicating ownership through a 401(k) retirement plan arrangement.

What is the net share impact of the reported Avidia Bancorp (AVBC) insider activity?

The Form 4 data show a net buy position. Jonathan Michael Nelson’s open-market purchase added 1,065 shares to his holdings, and the transaction summary records 1065 net shares bought with no reported sales in this filing.