William C. Tsonos - 02 Aug 2023 Form 4 Insider Report for BROOKLINE BANCORP INC (BRKL)

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BRKL	Common	Award	$0	+8,617	+60%	$0.000000	22,898	02 Aug 2023	Direct	F1
transaction	BRKL	Common	Award	$0	+8,617	+38%	$0.000000	31,515	02 Aug 2023	Direct	F2
transaction	BRKL	Common	Tax liability	$0	-68	-0.22%	$0.000000	31,447	02 Aug 2023	Direct
transaction	BRKL	Common	Tax liability	$0	-127	-0.4%	$0.000000	31,320	02 Aug 2023	Direct
transaction	BRKL	Common	Tax liability	$0	-102	-0.33%	$0.000000	31,218	03 Aug 2023	Direct
transaction	BRKL	Common	Tax liability	$0	-20	-0.06%	$0.000000	31,198	03 Aug 2023	Direct	F3
transaction	BRKL	Common	Tax liability	$0	-298	-0.96%	$0.000000	30,900	03 Aug 2023	Direct	F4
holding	BRKL	Common						1,191	02 Aug 2023	By ESOP	F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Id	Content
F1	Restricted stock shares granted pursuant to the Brookline Bancorp, Inc. 2021 Stock Option and Incentive Plan. The shares vest in three equal installments on an annual basis, commencing one year from the date of grant.
F2	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.
F3	On August 3, 2020, the reporting person received a grant of performance based restricted stock. A portion of the performance metrics were met, therefore a portion of these restricted shares vested on the third anniversary of the date of grant and the remaining shares were automatically forfeited.
F4	Includes shares of restricted stock granted pursuant to the Brookline Bancorp, Inc. 2021 Stock Option and Incentive Plan.
F5	Reflects ESOP allocations and distributions that have occurred since the reporting person's last ownership report.