Avidia Bancorp grants director 20K shares, 50K options

AVBC director Paul Blazar received time-vested restricted stock and stock options as part of his equity compensation on September 16, 2026.

Rhea-AI Filing Summary

Avidia Bancorp, Inc. (AVBC) director Paul Blazar reported equity awards on September 16, 2026. He received 20,076 shares of restricted common stock and 50,190 stock options to acquire common stock at an exercise price of $22.29 per share, expiring September 16, 2036. The restricted shares and options each vest 20% per year commencing on September 16, 2027. Following the restricted stock grant, he held 49,411 common shares directly. No Rule 10b5-1 trading plan is reported.

Insider Trade Summary

Grant/Award: 70,266 shares

Grant/Award 2 txns

Insider Blazar Paul

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 — 49,411 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 Stock options granted: 50,190 options Option exercise price: $22.29 per share +3 more

6 metrics

Restricted stock granted 20,076 shares Restricted AVBC common stock awarded to director on September 16, 2026

Stock options granted 50,190 options Options on AVBC common stock granted on September 16, 2026

Option exercise price $22.29 per share Exercise price for 50,190 stock options expiring September 16, 2036

Option expiration date September 16, 2036 Expiration of AVBC stock options granted to director

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

Common shares held after grant 49,411 shares Director’s direct AVBC common stock holdings after restricted stock award

Key Terms

restricted stock, Stock options, vesting

3 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.

vesting financial

"vest at a rate of 20% per year commencing on September 16, 2027"

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 insider transactions did AVBC director Paul Blazar report on this Form 4?

He reported two equity awards on September 16, 2026: a grant of 20,076 restricted common shares and a grant of 50,190 stock options to purchase AVBC common stock at $22.29 per share.

How many AVBC stock options were granted to Paul Blazar and at what price?

He was granted 50,190 stock options, each exercisable for one share of AVBC common stock at an exercise price of $22.29 per share, with an expiration date of September 16, 2036.

What are the vesting terms of Paul Blazar’s AVBC restricted stock grant?

The 20,076 restricted shares of AVBC common stock vest at a rate of 20% per year, commencing on September 16, 2027, according to the footnote disclosure.

What are the vesting terms of Paul Blazar’s AVBC stock options?

The 50,190 stock options vest at a rate of 20% per year, commencing on September 16, 2027. The options give the right to buy AVBC common stock at $22.29 per share until September 16, 2036.

How many AVBC common shares did Paul Blazar hold after the restricted stock award?

Following the September 16, 2026 restricted stock grant, Paul Blazar directly held 49,411 shares of AVBC common stock, as reported in the post-transaction holdings column for that transaction.

Were Paul Blazar’s AVBC transactions made under a Rule 10b5-1 plan?

No. The filing’s Rule 10b5-1 checkbox is not selected, and there is no footnote indicating that the reported equity awards were made pursuant to a Rule 10b5-1 trading plan.

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

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Available on EDGAR 09/17/2026 - 03:29 PM EDT Accepted by SEC EDGAR 09/17/2026 - 03:29 PM EDT 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^*

Blazar Paul

(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	49,411	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)