Director James Ball adds 5,000 Avidia Bancorp (AVBC) shares via IRA purchase

Rhea-AI Filing Summary

Avidia Bancorp, Inc. director James N. Ball reported an open-market purchase of 5,000 shares of common stock on April 27, 2026 at a price of $20.60 per share. The shares are held indirectly through an IRA, bringing his reported indirect holdings to 50,000 shares of Avidia Bancorp common stock.

Insider Trade Summary

Net Buyer: 5,000 shares ($103,000)

Net Buy 1 txn

Insider BALL JAMES N

Role null

Bought 5,000 shs ($103K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	5,000	$20.60	$103K

Holdings After Transaction: Common Stock — 50,000 shares (Indirect, By IRA)

Footnotes (1)

Key Figures

Shares purchased: 5,000 shares Purchase price: $20.60 per share Holdings after transaction: 50,000 shares

3 metrics

Shares purchased 5,000 shares Open-market purchase on April 27, 2026

Purchase price $20.60 per share Price paid for Avidia Bancorp common stock

Holdings after transaction 50,000 shares Indirect IRA-held Avidia Bancorp common shares

Key Terms

open-market purchase, indirect ownership, IRA

3 terms

open-market purchase financial

"transaction_action: "open-market purchase""

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.

indirect ownership financial

"ownership_type: "indirect" and ownership_code: "I""

IRA financial

"nature_of_ownership: "By IRA""

An individual retirement account (IRA) is a savings account designed to help people put aside money for their retirement, often with tax advantages that encourage long-term savings. It matters to investors because it can grow over time, providing financial security later in life, and offers benefits that can reduce current taxes or allow investments to compound more effectively.

Form 4 Insider Transactions: What Each Field Means →

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^*

BALL JAMES N

(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)
04/27/2026

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	04/27/2026		P		5,000	A	$20.6	50,000	I	By IRA

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

Explanation of Responses:

	/s/ Victor L. Cangelosi, pursuant to power of attorney	04/29/2026
	** 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)

FAQ

What insider transaction did Avidia Bancorp (AVBC) disclose in this Form 4?

Avidia Bancorp reported that director James N. Ball completed an open-market purchase of 5,000 shares of common stock. The trade occurred on April 27, 2026 at a price of $20.60 per share and was executed through an IRA account.

Was the Avidia Bancorp (AVBC) Form 4 transaction a buy or a sell?

The Form 4 shows a buy transaction. Director James N. Ball made an open-market purchase of 5,000 Avidia Bancorp common shares at $20.60 per share, increasing his indirectly held position through an IRA to a reported total of 50,000 shares.

How many Avidia Bancorp (AVBC) shares does James N. Ball hold after this transaction?

After the reported trade, James N. Ball’s indirect holdings total 50,000 Avidia Bancorp common shares. This figure includes the newly purchased 5,000 shares, all of which are held through an IRA as disclosed in the Form 4 filing.

At what price were the Avidia Bancorp (AVBC) shares purchased in this Form 4 filing?

The reported open-market purchase was executed at a price of $20.60 per share. Director James N. Ball acquired 5,000 Avidia Bancorp common shares at this price, and the transaction is classified as an indirect ownership position via an IRA.

Is the Avidia Bancorp (AVBC) insider transaction held directly or indirectly?

The purchased shares are held indirectly. The Form 4 specifies ownership type as indirect, with the nature of ownership described as “By IRA,” indicating the 50,000 post-transaction shares are held in an individual retirement account for the reporting person.