[Form 4] Brookline Bancorp Inc Insider Trading Activity

Rhea-AI Filing Summary

Brookline Bancorp (BRKL) Form 4 reports insider activity by Co-President & COO Michael W. McCurdy on 2 Aug 2025.

• McCurdy had four “F” transactions—issuer share withholding to cover taxes on vested performance-based restricted stock—under the 2021 Stock Option & Incentive Plan.
• 6,578 common shares were surrendered at $10.28, a non-open-market price equal to the fair-market value used for tax purposes.
• Direct holdings declined from 107,229 to 100,651 shares; indirect ESOP holdings remain 1,623 shares.

No derivative transactions were reported and no discretionary sales or purchases occurred. The filing is routine and signals neither bullish nor bearish intent, but it modestly reduces the executive’s direct equity exposure.

Positive

• None.

Negative

• Officer’s direct holdings fell by 6,578 shares (≈6%) due to tax withholding, slightly reducing insider ownership.

Insights

Financial Analyst

TL;DR: Executive surrendered 6,578 BRKL shares for tax withholding; ownership now 100,651 direct, 1,623 indirect—administrative, low impact.

The Code F designation confirms these were automatic share withholdings tied to restricted-stock vesting, not open-market sales. The 6,578 shares equal roughly 6% of McCurdy’s prior direct stake and less than 0.01% of shares outstanding, suggesting minimal market influence. Post-transaction ownership remains significant, maintaining alignment with shareholders. Because no derivatives were exercised and no purchase occurred, the event is largely neutral to valuation and does not alter the firm’s share count beyond routine treasury adjustments.

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^*

McCurdy Michael W.

(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)
	Co-President & COO

3. Date of Earliest Transaction (Month/Day/Year)
08/02/2025

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	08/02/2025		F		2,876(1)	D	$10.28	104,353	D
Common	08/02/2025		F		959	D	$10.28	103,394	D
Common	08/02/2025		F		1,303	D	$10.28	102,091	D
Common	08/02/2025		F		1,440	D	$10.28	100,651(2)	D
Common								1,623	I	By 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)
				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 vest on the third anniversary of the date of grant based on certain performance based metrics.

2. Includes shares of restricted stock granted pursuant to the Brookline Bancorp, Inc. 2021 Stock Option and Incentive Plan.

Remarks:

	Michael W. McCurdy, by Marissa S. Martin, P.O.A.	08/05/2025
	** 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

How many Brookline Bancorp (BRKL) shares did Michael W. McCurdy dispose of?

6,578 common shares were disposed under Code F for tax withholding on 2 Aug 2025.

What price was used for the insider share disposition?

The shares were valued at $10.28 per share, the fair-market price applied for tax purposes.

How many BRKL shares does McCurdy own after the transactions?

He holds 100,651 shares directly and 1,623 shares indirectly through the ESOP.

Were the transactions open-market sales?

No. Code F indicates issuer share withholding to pay taxes; no open-market trades occurred.

Did the filing report any derivative security activity?

No derivative securities were acquired or disposed of in this Form 4.

What triggers a Code F transaction on Form 4?

Code F is used when shares are withheld by the issuer to satisfy tax obligations from equity award vesting.