[Form 4] Brookline Bancorp Inc Insider Trading Activity

Rhea-AI Filing Summary

Michael P. Goldrick, an officer and director of Brookline Bancorp, Inc. (BRKL), reported multiple dispositions on 08/25/2025. The Form 4 shows four sales (transaction code F) totaling 9,489 shares sold at $11.03 per share. After these transactions Goldrick is reported to beneficially own 38,091 shares directly, plus 5,000 shares held indirectly in an IRA. The filing explains these shares were performance-based restricted stock granted under the company’s 2021 Stock Option and Incentive Plan and vested pursuant to the terms of the merger agreement among Berkshire Hills Bancorp, Commerce Acquisition Sub, and Brookline Bancorp.

Positive

• Transparent disclosure of multiple dispositions with prices and quantities on Form 4
• Vesting tied to merger terms explains why restricted shares became available for disposition

Negative

• Insider reduced direct holdings by 9,489 shares through dispositions on 08/25/2025

Insights

Corporate Governance Expert

TL;DR: Insider sold vested performance shares post-merger; transaction appears compliant and disclosed.

The Form 4 documents that Mr. Goldrick disposed of 9,489 common shares on 08/25/2025 at $11.03 each following vesting of performance-based restricted stock under the 2021 incentive plan. The filing cites vesting per the merger agreement, which explains the commercial context for the lapse of restrictions. Ownership after the transactions is reported as 38,091 shares directly plus 5,000 indirectly via an IRA. From a governance perspective, the filing is routine: it discloses the mechanics (vesting and sale) and provides the required detail on amounts and prices.

Financial Analyst

TL;DR: Insider sale of 9,489 shares at $11.03 is a disclosed, post-vesting disposition; impact is likely neutral absent other context.

The reported dispositions total 9,489 shares sold at $11.03 on 08/25/2025. Post-transaction direct beneficial ownership is 38,091 shares, with an additional 5,000 held indirectly in an IRA. The filing notes the shares were performance-based restricted stock that vested under the terms of the merger agreement with Berkshire Hills Bancorp/Commerce Acquisition Sub. Without additional company-level financial data or market reaction, this isolated insider sale is informational and does not by itself demonstrate a material change to the company’s capitalization or outlook.

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
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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^*

Goldrick Michael P

(Last) (First) (Middle)

131 CLARENDON STREET

(Street)

BOSTON MA 02116

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
BROOKLINE BANCORP INC [ BRKL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

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

3. Date of Earliest Transaction (Month/Day/Year)
08/25/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

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

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	08/25/2025		F		2,988(1)	D	$11.03	44,592	D
Common	08/25/2025		F		996	D	$11.03	43,596	D
Common	08/25/2025		F		3,303	D	$11.03	40,293	D
Common	08/25/2025		F		2,202	D	$11.03	38,091	D
Common								38,091	D
Common								5,000	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:

1. Performance based restricted stock shares granted pursuant to the Brookline Bancorp, Inc. 2021 Stock Option and Incentive Plan. The shares vested pursuant to the terms of the Agreement and Plan of Merger by and among Berkshire Hills Bancorp, Inc., Commerce Acquisition Sub, Inc., and Brookline Bancorp, Inc.

Remarks:

	Michael P. Goldrick, by Marissa S. Martin, POA	08/27/2025
	** 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.

FAQ

What transactions did Michael P. Goldrick report on the BRKL Form 4?

He reported four dispositions on 08/25/2025 totaling 9,489 shares sold at $11.03 per share.

How many BRKL shares does Goldrick beneficially own after the reported transactions?

The filing reports 38,091 shares beneficially owned directly after the transactions and 5,000 shares indirectly held in an IRA.

Why were the shares available for sale according to the Form 4?

The shares were performance-based restricted stock granted under the Brookline Bancorp, Inc. 2021 Stock Option and Incentive Plan and vested pursuant to the merger agreement.

At what price were the BRKL shares sold?

The reported dispositions were executed at $11.03 per share.

When was the Form 4 signed and filed for these transactions?

The signature block shows the Form 4 signed by Michael P. Goldrick by POA Marissa S. Martin on 08/27/2025.