STOCK TITAN

Avidia Bancorp (AVBC) CRO adds 1,209 shares in open-market buy

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4/A

Rhea-AI Filing Summary

Avidia Bancorp, Inc. executive vice president and chief risk officer Nicolas Karmelek reported an open-market purchase of 1,209 shares of common stock at $20.76 per share on April 28, 2026. Following this transaction, his directly held stake increased to 7,694 shares.

The filing also shows indirect ownership of 1,096 shares held through an ESOP and 21,871 shares held through a 401(k) plan, described as transactions not required to be reported under Section 16. No derivative securities are listed as outstanding in this filing.

Positive

  • None.

Negative

  • None.
Insider Karmelek Nicolas
Role EVP and CRO
Bought 1,209 shs ($25K)
Type Security Shares Price Value
Purchase Common Stock 1,209 $20.76 $25K
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 7,694 shares (Direct, null); Common Stock — 21,871 shares (Indirect, By 401(k))
Footnotes (1)
  1. [object Object]
Open-market purchase 1,209 shares Common Stock bought on April 28, 2026
Purchase price $20.76 per share Price for 1,209 common shares
Direct holdings after transaction 7,694 shares Common Stock directly owned after April 28, 2026 buy
Indirect ESOP holdings 1,096 shares Common Stock held indirectly via ESOP
Indirect 401(k) holdings 21,871 shares Common Stock held indirectly via 401(k) plan
Net insider share change 1,209 shares Net buy per transaction summary
open-market purchase financial
"reported an open-market purchase of 1,209 shares of common stock"
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.
Section 16 regulatory
"transactions not required to be reported pursuant to Section 16 of the Securities Act"
Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.
ESOP financial
"indirect ownership of 1,096 shares held through an 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.
401(k) financial
"21,871 shares held through a 401(k) plan"
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.
Form 4/A regulatory
"reported on this Form 4/A"
Form 4/A is an amended filing that corrects or updates an earlier Form 4, the mandatory report that insiders (like company executives, directors, or large shareholders) must file when their ownership stakes change. Think of it as an edited receipt showing who bought or sold stock and when; investors use it to track insider confidence, detect potential conflicts, and spot trading patterns that might signal future company prospects.
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*
Karmelek Nicolas

(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)
EVP and CRO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/28/2026
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)
04/30/2026
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 Stock04/28/2026P1,209A$20.767,694D
Common Stock21,871(1)IBy 401(k)
Common Stock1,096(1)IBy 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Reflects transactions not required to be reported pursuant to Section 16 of the Securities Act of 1934, as amended.
/s/ Victor L. Cangelosi, pursuant to power of attorney05/05/2026
** 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 AVBC executive Nicolas Karmelek report on this Form 4/A?

Nicolas Karmelek reported an open-market purchase of 1,209 shares of Avidia Bancorp common stock. The shares were bought at $20.76 per share on April 28, 2026, increasing his directly held position to 7,694 shares after the transaction.

At what price did AVBC’s EVP and CRO buy Avidia Bancorp shares?

The EVP and CRO bought Avidia Bancorp shares at $20.76 per share in an open-market purchase. This price applies to the 1,209 common shares acquired on April 28, 2026, as disclosed in the amended Form 4/A filing.

How many Avidia Bancorp (AVBC) shares does Nicolas Karmelek hold directly after this filing?

After the reported transaction, Nicolas Karmelek directly owns 7,694 shares of Avidia Bancorp common stock. This total reflects his holdings following the purchase of 1,209 shares at $20.76 per share on April 28, 2026.

What indirect Avidia Bancorp (AVBC) holdings are reported for Nicolas Karmelek?

The filing reports indirect ownership of 1,096 shares of Avidia Bancorp stock held through an ESOP and 21,871 shares held through a 401(k) plan. These entries are noted as transactions not required to be reported under Section 16.

Does this AVBC Form 4/A show any derivative securities for Nicolas Karmelek?

No derivative securities are listed for Nicolas Karmelek in this Form 4/A. The filing only reports common stock positions, including the 1,209 shares purchased in the open market and indirect holdings via an ESOP and a 401(k) plan.