Avidia Bancorp grants director shares, 50K options

Avidia Bancorp director Carol V. Gallagher received new restricted shares and stock options that vest over five years beginning in 2027.

Rhea-AI Filing Summary

Avidia Bancorp, Inc. (AVBC) director Carol V. Gallagher reported equity awards on September 16, 2026. She received 20,076 shares of restricted common stock, increasing her direct common stock holdings to 30,576 shares, and a grant of 50,190 stock options with a $22.29 exercise price.

Both the restricted shares and the options vest at 20% per year starting on September 16, 2027, and the options expire on September 16, 2036. No trades were reported under a pre-arranged Rule 10b5-1 trading plan.

Insider Trade Summary

Grant/Award: 70,266 shares

Grant/Award 2 txns

Insider Gallagher Carol V

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Options F2	50,190	$0.00	$0.00
Grant/Award	Common Stock F1	20,076	$0.00	$0.00

Holdings After Transaction: Stock Options — 50,190 contracts (Direct); Common Stock — 30,576 shares (Direct)

Footnotes (2)

1. F1. Shares of restricted stock vest at a rate of 20% per year commencing on September 16, 2027.
2. F2. Stock options vest at a rate of 20% per year commencing on September 16, 2027.

Key Figures

Restricted stock granted: 20,076 shares Common stock held after grant: 30,576 shares Stock options granted: 50,190 options +3 more

6 metrics

Restricted stock granted 20,076 shares Grant of restricted common stock on September 16, 2026

Common stock held after grant 30,576 shares Direct common stock holdings after the September 16, 2026 grant

Stock options granted 50,190 options Options on Avidia Bancorp, Inc. common stock granted on September 16, 2026

Option exercise price $22.29 per share Exercise price for 50,190 stock options granted on September 16, 2026

Vesting rate 20% per year Applies to both restricted stock and options, starting September 16, 2027

Option expiration date September 16, 2036 Expiration of the 50,190 stock options granted

Key Terms

restricted stock, stock options, exercise price, vesting

4 terms

restricted stock financial

"Shares of restricted stock vest at a rate of 20% per year"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

stock options financial

"Stock options vest at a rate of 20% per year"

Stock options are agreements that give a person the right to buy or sell a company's stock at a specific price within a certain time frame. They are often used as a reward or incentive, similar to a coupon that can be used later if the stock price rises, allowing the holder to make a profit.

exercise price financial

"Stock options covering common stock at an exercise price per share"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

vesting financial

"Shares of restricted stock vest at a rate of 20% per year"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What equity awards did AVBC director Carol V. Gallagher report receiving?

She reported a grant of 20,076 shares of restricted common stock and 50,190 stock options on September 16, 2026, each tied to Avidia Bancorp, Inc. common stock. These awards were reported as direct holdings.

How many AVBC common shares does Carol V. Gallagher hold after this transaction?

After the restricted stock grant, Carol V. Gallagher directly holds 30,576 shares of Avidia Bancorp, Inc. common stock, as reported following the September 16, 2026 equity award.

What is the exercise price and term of Carol V. Gallagher’s AVBC stock options?

The reported stock options cover 50,190 shares of Avidia Bancorp, Inc. common stock at an exercise price of $22.29 per share. They become exercisable over time and expire on September 16, 2036.

When do Carol V. Gallagher’s AVBC restricted shares and options start vesting?

Both the 20,076 restricted shares and the 50,190 stock options vest at a rate of 20% per year, with vesting commencing on September 16, 2027, according to the reported footnotes.

Were Carol V. Gallagher’s AVBC transactions made under a Rule 10b5-1 plan?

No. The filing indicates that these reported equity awards were not made under a Rule 10b5-1 trading plan. They are characterized as grants or awards, not open-market purchases or sales.

Do the reported AVBC transactions involve any sales of shares by Carol V. Gallagher?

No sales were reported. The filing only shows acquisitions in the form of restricted common stock and stock option grants, with no dispositions of Avidia Bancorp, Inc. shares on the transaction date.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/17/2026 - 03:32 PM Accepted by SEC EDGAR 09/17/2026 - 03:31 PM Learn about SEC filing dates

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^*

Gallagher Carol V

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/16/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/16/2026		A		20,076(1)	A	$0	30,576	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
Stock Options	$22.29	09/16/2026		A		50,190(2)		09/16/2027	09/16/2036	Common Stock	50,190(2)	$0	50,190(2)	D

Explanation of Responses:

1. Shares of restricted stock vest at a rate of 20% per year commencing on September 16, 2027.

2. Stock options vest at a rate of 20% per year commencing on September 16, 2027.

	/s/ Victor L. Cangelosi, pursuant to power of attorney	09/17/2026
	** 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.
* Form 4: SEC 1474 (03-26)