401k Plan data: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN plan

BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 401k Plan overview

Plan Name	BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN
Plan identification number	003

BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN Benefits

401k Plan Type

Defined Contribution Pension

Plan Features/Benefits

Profit-sharing
ESOP other than a leveraged ESOP - A completed Schedule E must be attached to a Form 5500 filed for an Employee Stock Ownership Plan (ESOP).
Leveraged ESOP - An ESOP that acquires employer securities with borrowed money or other debt-financing techniques. A completed Schedule E must be attached to a Form 5500 filed for an ESOP.
Plan requiring that all or part of employer contributions be invested and held, at least for a limited period, in employer securities.

401k Sponsoring company profile

BROOKLINE BANCORP, INC. has sponsored the creation of one or more 401k plans.

Company Name: BROOKLINE BANCORP, INC.

Employer identification number (EIN): 043402944

NAIC Classification: 522120
NAIC Description: Savings Institutions

Form 5500 Filing Information

Submission information for form 5500 for 401k plan BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN

Plan id# Filing Submission Date Name of Administrator Date Administrator Signed Name of Company Sponsor Date Sponsor Signed
003 2022-01-01 EDGAR OTEIZA 2023-09-27 EDGAR OTEIZA 2023-09-27
003 2021-01-01 EDGAR OTEIZA 2022-09-09 EDGAR OTEIZA 2022-09-09
003 2020-01-01 EDGAR OTEIZA 2021-10-01
003 2019-01-01 EDGAR OTEIZA 2020-10-14
003 2018-01-01 EDGAR OTEIZA 2019-10-15
003 2017-01-01
003 2016-01-01
003 2015-01-01 MARIAN MEEHAN MARIAN MEEHAN 2016-08-18
003 2014-01-01 JOHN NEALON JOHN NEALON 2015-07-30

Plan id#	Filing Submission Date	Name of Administrator	Date Administrator Signed	Name of Company Sponsor	Date Sponsor Signed
003	2022-01-01	EDGAR OTEIZA	2023-09-27	EDGAR OTEIZA	2023-09-27
003	2021-01-01	EDGAR OTEIZA	2022-09-09	EDGAR OTEIZA	2022-09-09
003	2020-01-01	EDGAR OTEIZA	2021-10-01
003	2019-01-01	EDGAR OTEIZA	2020-10-14
003	2018-01-01	EDGAR OTEIZA	2019-10-15
003	2017-01-01
003	2016-01-01
003	2015-01-01	MARIAN MEEHAN		MARIAN MEEHAN	2016-08-18
003	2014-01-01	JOHN NEALON		JOHN NEALON	2015-07-30

Plan Statistics for BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN

401k plan membership statisitcs for BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN

Measure Date Value
2022: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2022 401k membership
Total participants, beginning-of-year 2022-01-01 899
Total number of active participants reported on line 7a of the Form 5500 2022-01-01 656
Number of retired or separated participants receiving benefits 2022-01-01 235
Number of other retired or separated participants entitled to future benefits 2022-01-01 0
Total of all active and inactive participants 2022-01-01 891
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2022-01-01 0
Total participants 2022-01-01 891
Number of participants with account balances 2022-01-01 886
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2022-01-01 0
2021: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2021 401k membership
Total participants, beginning-of-year 2021-01-01 873
Total number of active participants reported on line 7a of the Form 5500 2021-01-01 658
Number of retired or separated participants receiving benefits 2021-01-01 164
Number of other retired or separated participants entitled to future benefits 2021-01-01 42
Total of all active and inactive participants 2021-01-01 864
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2021-01-01 0
Total participants 2021-01-01 864
Number of participants with account balances 2021-01-01 863
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2021-01-01 0
2020: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2020 401k membership
Total participants, beginning-of-year 2020-01-01 877
Total number of active participants reported on line 7a of the Form 5500 2020-01-01 662
Number of retired or separated participants receiving benefits 2020-01-01 0
Number of other retired or separated participants entitled to future benefits 2020-01-01 171
Total of all active and inactive participants 2020-01-01 833
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2020-01-01 1
Total participants 2020-01-01 834
Number of participants with account balances 2020-01-01 834
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2020-01-01 0
2019: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2019 401k membership
Total participants, beginning-of-year 2019-01-01 832
Total number of active participants reported on line 7a of the Form 5500 2019-01-01 635
Number of retired or separated participants receiving benefits 2019-01-01 0
Number of other retired or separated participants entitled to future benefits 2019-01-01 205
Total of all active and inactive participants 2019-01-01 840
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2019-01-01 0
Total participants 2019-01-01 840
Number of participants with account balances 2019-01-01 838
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2019-01-01 0
2018: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2018 401k membership
Total participants, beginning-of-year 2018-01-01 792
Total number of active participants reported on line 7a of the Form 5500 2018-01-01 633
Number of retired or separated participants receiving benefits 2018-01-01 0
Number of other retired or separated participants entitled to future benefits 2018-01-01 173
Total of all active and inactive participants 2018-01-01 806
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2018-01-01 0
Total participants 2018-01-01 806
Number of participants with account balances 2018-01-01 806
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2018-01-01 0
2017: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2017 401k membership
Total participants, beginning-of-year 2017-01-01 764
Total number of active participants reported on line 7a of the Form 5500 2017-01-01 599
Number of retired or separated participants receiving benefits 2017-01-01 0
Number of other retired or separated participants entitled to future benefits 2017-01-01 158
Total of all active and inactive participants 2017-01-01 757
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2017-01-01 0
Total participants 2017-01-01 757
Number of participants with account balances 2017-01-01 756
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2017-01-01 0
2016: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2016 401k membership
Total participants, beginning-of-year 2016-01-01 796
Total number of active participants reported on line 7a of the Form 5500 2016-01-01 577
Number of retired or separated participants receiving benefits 2016-01-01 0
Number of other retired or separated participants entitled to future benefits 2016-01-01 142
Total of all active and inactive participants 2016-01-01 719
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2016-01-01 0
Total participants 2016-01-01 719
Number of participants with account balances 2016-01-01 718
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2016-01-01 0
2015: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2015 401k membership
Total participants, beginning-of-year 2015-01-01 692
Total number of active participants reported on line 7a of the Form 5500 2015-01-01 565
Number of retired or separated participants receiving benefits 2015-01-01 9
Number of other retired or separated participants entitled to future benefits 2015-01-01 200
Total of all active and inactive participants 2015-01-01 774
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2015-01-01 0
Total participants 2015-01-01 774
Number of participants with account balances 2015-01-01 774
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2015-01-01 30
2014: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2014 401k membership
Total participants, beginning-of-year 2014-01-01 640
Total number of active participants reported on line 7a of the Form 5500 2014-01-01 561
Number of retired or separated participants receiving benefits 2014-01-01 7
Number of other retired or separated participants entitled to future benefits 2014-01-01 124
Total of all active and inactive participants 2014-01-01 692
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2014-01-01 0
Total participants 2014-01-01 692
Number of participants with account balances 2014-01-01 692
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2014-01-01 42

Measure	Date	Value
2022: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2022 401k membership
Total participants, beginning-of-year	2022-01-01	899
Total number of active participants reported on line 7a of the Form 5500	2022-01-01	656
Number of retired or separated participants receiving benefits	2022-01-01	235
Number of other retired or separated participants entitled to future benefits	2022-01-01	0
Total of all active and inactive participants	2022-01-01	891
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2022-01-01	0
Total participants	2022-01-01	891
Number of participants with account balances	2022-01-01	886
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2022-01-01	0
2021: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2021 401k membership
Total participants, beginning-of-year	2021-01-01	873
Total number of active participants reported on line 7a of the Form 5500	2021-01-01	658
Number of retired or separated participants receiving benefits	2021-01-01	164
Number of other retired or separated participants entitled to future benefits	2021-01-01	42
Total of all active and inactive participants	2021-01-01	864
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2021-01-01	0
Total participants	2021-01-01	864
Number of participants with account balances	2021-01-01	863
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2021-01-01	0
2020: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2020 401k membership
Total participants, beginning-of-year	2020-01-01	877
Total number of active participants reported on line 7a of the Form 5500	2020-01-01	662
Number of retired or separated participants receiving benefits	2020-01-01	0
Number of other retired or separated participants entitled to future benefits	2020-01-01	171
Total of all active and inactive participants	2020-01-01	833
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2020-01-01	1
Total participants	2020-01-01	834
Number of participants with account balances	2020-01-01	834
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2020-01-01	0
2019: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2019 401k membership
Total participants, beginning-of-year	2019-01-01	832
Total number of active participants reported on line 7a of the Form 5500	2019-01-01	635
Number of retired or separated participants receiving benefits	2019-01-01	0
Number of other retired or separated participants entitled to future benefits	2019-01-01	205
Total of all active and inactive participants	2019-01-01	840
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2019-01-01	0
Total participants	2019-01-01	840
Number of participants with account balances	2019-01-01	838
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2019-01-01	0
2018: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2018 401k membership
Total participants, beginning-of-year	2018-01-01	792
Total number of active participants reported on line 7a of the Form 5500	2018-01-01	633
Number of retired or separated participants receiving benefits	2018-01-01	0
Number of other retired or separated participants entitled to future benefits	2018-01-01	173
Total of all active and inactive participants	2018-01-01	806
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2018-01-01	0
Total participants	2018-01-01	806
Number of participants with account balances	2018-01-01	806
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2018-01-01	0
2017: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2017 401k membership
Total participants, beginning-of-year	2017-01-01	764
Total number of active participants reported on line 7a of the Form 5500	2017-01-01	599
Number of retired or separated participants receiving benefits	2017-01-01	0
Number of other retired or separated participants entitled to future benefits	2017-01-01	158
Total of all active and inactive participants	2017-01-01	757
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2017-01-01	0
Total participants	2017-01-01	757
Number of participants with account balances	2017-01-01	756
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2017-01-01	0
2016: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2016 401k membership
Total participants, beginning-of-year	2016-01-01	796
Total number of active participants reported on line 7a of the Form 5500	2016-01-01	577
Number of retired or separated participants receiving benefits	2016-01-01	0
Number of other retired or separated participants entitled to future benefits	2016-01-01	142
Total of all active and inactive participants	2016-01-01	719
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2016-01-01	0
Total participants	2016-01-01	719
Number of participants with account balances	2016-01-01	718
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2016-01-01	0
2015: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2015 401k membership
Total participants, beginning-of-year	2015-01-01	692
Total number of active participants reported on line 7a of the Form 5500	2015-01-01	565
Number of retired or separated participants receiving benefits	2015-01-01	9
Number of other retired or separated participants entitled to future benefits	2015-01-01	200
Total of all active and inactive participants	2015-01-01	774
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2015-01-01	0
Total participants	2015-01-01	774
Number of participants with account balances	2015-01-01	774
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2015-01-01	30
2014: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2014 401k membership
Total participants, beginning-of-year	2014-01-01	640
Total number of active participants reported on line 7a of the Form 5500	2014-01-01	561
Number of retired or separated participants receiving benefits	2014-01-01	7
Number of other retired or separated participants entitled to future benefits	2014-01-01	124
Total of all active and inactive participants	2014-01-01	692
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2014-01-01	0
Total participants	2014-01-01	692
Number of participants with account balances	2014-01-01	692
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2014-01-01	42

Financial Data on BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN

Measure	Date	Value
2022 : BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2022 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2022-12-31	$-1,349,535
Total unrealized appreciation/depreciation of assets	2022-12-31	$-1,349,535
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2022-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2022-12-31	$251,914
Expenses. Interest paid	2022-12-31	$13,393
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2022-12-31	$13,393
Total income from all sources (including contributions)	2022-12-31	$-757,292
Total loss/gain on sale of assets	2022-12-31	$0
Total of all expenses incurred	2022-12-31	$635,426
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2022-12-31	$621,933
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2022-12-31	$252,476
Value of total assets at end of year	2022-12-31	$9,386,771
Value of total assets at beginning of year	2022-12-31	$11,031,403
Total of administrative expenses incurred including professional, contract, advisory and management fees	2022-12-31	$100
Total interest from all sources	2022-12-31	$3,145
Total dividends received (eg from common stock, registered investment company shares)	2022-12-31	$336,622
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2022-12-31	No
Administrative expenses professional fees incurred	2022-12-31	$100
Was this plan covered by a fidelity bond	2022-12-31	Yes
Value of fidelity bond cover	2022-12-31	$7,000,000
If this is an individual account plan, was there a blackout period	2022-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2022-12-31	No
Value of other receiveables (less allowance for doubtful accounts) at end of year	2022-12-31	$384
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2022-12-31	$396
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2022-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2022-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2022-12-31	No
Value of net income/loss	2022-12-31	$-1,392,718
Value of net assets at end of year (total assets less liabilities)	2022-12-31	$9,386,771
Value of net assets at beginning of year (total assets less liabilities)	2022-12-31	$10,779,489
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2022-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2022-12-31	No
Were any leases to which the plan was party in default or uncollectible	2022-12-31	No
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2022-12-31	$374,436
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2022-12-31	$345,963
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2022-12-31	$345,963
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2022-12-31	$3,145
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2022-12-31	No
Was there a failure to transmit to the plan any participant contributions	2022-12-31	No
Has the plan failed to provide any benefit when due under the plan	2022-12-31	No
Assets. Invements in employer securities at end of year	2022-12-31	$9,011,951
Assets. Invements in employer securities at beginning of year	2022-12-31	$10,685,044
Contributions received in cash from employer	2022-12-31	$252,476
Employer contributions (assets) at end of year	2022-12-31	$0
Employer contributions (assets) at beginning of year	2022-12-31	$0
Income. Dividends from common stock	2022-12-31	$336,622
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2022-12-31	$621,933
Did the plan have assets held for investment	2022-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2022-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2022-12-31	No
Liabilities. Value of acquisition indebtedness at end of year	2022-12-31	$0
Liabilities. Value of acquisition indebtedness at beginning of year	2022-12-31	$251,914
Opinion of an independent qualified public accountant for this plan	2022-12-31	Unqualified
Accountancy firm name	2022-12-31	PKF O'CONNOR DAVIES, LLP
Accountancy firm EIN	2022-12-31	271728945
2021 : BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2021 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2021-12-31	$3,017,545
Total unrealized appreciation/depreciation of assets	2021-12-31	$3,017,545
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2021-12-31	$251,914
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2021-12-31	$501,914
Expenses. Interest paid	2021-12-31	$34,643
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2021-12-31	$34,643
Total income from all sources (including contributions)	2021-12-31	$3,617,789
Total loss/gain on sale of assets	2021-12-31	$0
Total of all expenses incurred	2021-12-31	$1,635,103
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2021-12-31	$1,600,079
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2021-12-31	$261,903
Value of total assets at end of year	2021-12-31	$11,031,403
Value of total assets at beginning of year	2021-12-31	$9,298,717
Total of administrative expenses incurred including professional, contract, advisory and management fees	2021-12-31	$381
Total interest from all sources	2021-12-31	$21
Total dividends received (eg from common stock, registered investment company shares)	2021-12-31	$338,320
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2021-12-31	No
Was this plan covered by a fidelity bond	2021-12-31	Yes
Value of fidelity bond cover	2021-12-31	$7,000,000
If this is an individual account plan, was there a blackout period	2021-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2021-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2021-12-31	No
Value of other receiveables (less allowance for doubtful accounts) at end of year	2021-12-31	$396
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2021-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2021-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2021-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2021-12-31	No
Value of net income/loss	2021-12-31	$1,982,686
Value of net assets at end of year (total assets less liabilities)	2021-12-31	$10,779,489
Value of net assets at beginning of year (total assets less liabilities)	2021-12-31	$8,796,803
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2021-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2021-12-31	No
Were any leases to which the plan was party in default or uncollectible	2021-12-31	No
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2021-12-31	$345,963
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2021-12-31	$366,458
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2021-12-31	$366,458
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2021-12-31	$21
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2021-12-31	No
Was there a failure to transmit to the plan any participant contributions	2021-12-31	No
Has the plan failed to provide any benefit when due under the plan	2021-12-31	No
Assets. Invements in employer securities at end of year	2021-12-31	$10,685,044
Assets. Invements in employer securities at beginning of year	2021-12-31	$8,932,259
Contributions received in cash from employer	2021-12-31	$261,903
Employer contributions (assets) at end of year	2021-12-31	$0
Employer contributions (assets) at beginning of year	2021-12-31	$0
Income. Dividends from common stock	2021-12-31	$338,320
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2021-12-31	$1,600,079
Contract administrator fees	2021-12-31	$381
Did the plan have assets held for investment	2021-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2021-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2021-12-31	No
Liabilities. Value of acquisition indebtedness at end of year	2021-12-31	$251,914
Liabilities. Value of acquisition indebtedness at beginning of year	2021-12-31	$501,914
Opinion of an independent qualified public accountant for this plan	2021-12-31	Unqualified
Accountancy firm name	2021-12-31	PKF O'CONNOR DAVIES, LLP
Accountancy firm EIN	2021-12-31	271728945
2020 : BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2020 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2020-12-31	$-3,441,451
Total unrealized appreciation/depreciation of assets	2020-12-31	$-3,441,451
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2020-12-31	$501,914
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2020-12-31	$751,925
Expenses. Interest paid	2020-12-31	$56,068
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2020-12-31	$56,068
Total income from all sources (including contributions)	2020-12-31	$-2,816,778
Total loss/gain on sale of assets	2020-12-31	$0
Total of all expenses incurred	2020-12-31	$733,176
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2020-12-31	$676,983
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2020-12-31	$269,448
Value of total assets at end of year	2020-12-31	$9,298,717
Value of total assets at beginning of year	2020-12-31	$13,098,682
Total of administrative expenses incurred including professional, contract, advisory and management fees	2020-12-31	$125
Total interest from all sources	2020-12-31	$1,660
Total dividends received (eg from common stock, registered investment company shares)	2020-12-31	$353,565
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2020-12-31	No
Was this plan covered by a fidelity bond	2020-12-31	Yes
Value of fidelity bond cover	2020-12-31	$7,000,000
If this is an individual account plan, was there a blackout period	2020-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2020-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2020-12-31	No
Value of other receiveables (less allowance for doubtful accounts) at end of year	2020-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2020-12-31	$518
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2020-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2020-12-31	$11
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2020-12-31	No
Value of net income/loss	2020-12-31	$-3,549,954
Value of net assets at end of year (total assets less liabilities)	2020-12-31	$8,796,803
Value of net assets at beginning of year (total assets less liabilities)	2020-12-31	$12,346,757
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2020-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2020-12-31	No
Were any leases to which the plan was party in default or uncollectible	2020-12-31	No
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2020-12-31	$366,458
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2020-12-31	$354,865
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2020-12-31	$354,865
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2020-12-31	$1,660
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2020-12-31	No
Was there a failure to transmit to the plan any participant contributions	2020-12-31	No
Has the plan failed to provide any benefit when due under the plan	2020-12-31	No
Assets. Invements in employer securities at end of year	2020-12-31	$8,932,259
Assets. Invements in employer securities at beginning of year	2020-12-31	$12,725,588
Contributions received in cash from employer	2020-12-31	$269,448
Employer contributions (assets) at end of year	2020-12-31	$0
Employer contributions (assets) at beginning of year	2020-12-31	$17,711
Income. Dividends from common stock	2020-12-31	$353,565
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2020-12-31	$676,983
Contract administrator fees	2020-12-31	$125
Did the plan have assets held for investment	2020-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2020-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2020-12-31	No
Liabilities. Value of acquisition indebtedness at end of year	2020-12-31	$501,914
Liabilities. Value of acquisition indebtedness at beginning of year	2020-12-31	$751,914
Opinion of an independent qualified public accountant for this plan	2020-12-31	Unqualified
Accountancy firm name	2020-12-31	PKF O'CONNOR DAVIES, LLP
Accountancy firm EIN	2020-12-31	271728945
2019 : BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2019 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2019-12-31	$2,077,470
Total unrealized appreciation/depreciation of assets	2019-12-31	$2,077,470
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2019-12-31	$751,925
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2019-12-31	$1,001,914
Expenses. Interest paid	2019-12-31	$77,143
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2019-12-31	$77,143
Total income from all sources (including contributions)	2019-12-31	$2,731,227
Total loss/gain on sale of assets	2019-12-31	$0
Total of all expenses incurred	2019-12-31	$642,502
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2019-12-31	$553,792
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2019-12-31	$302,657
Value of total assets at end of year	2019-12-31	$13,098,682
Value of total assets at beginning of year	2019-12-31	$11,259,946
Total of administrative expenses incurred including professional, contract, advisory and management fees	2019-12-31	$11,567
Total interest from all sources	2019-12-31	$5,145
Total dividends received (eg from common stock, registered investment company shares)	2019-12-31	$345,955
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2019-12-31	No
Administrative expenses professional fees incurred	2019-12-31	$11,567
Was this plan covered by a fidelity bond	2019-12-31	Yes
Value of fidelity bond cover	2019-12-31	$7,000,000
If this is an individual account plan, was there a blackout period	2019-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2019-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2019-12-31	No
Value of other receiveables (less allowance for doubtful accounts) at end of year	2019-12-31	$518
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2019-12-31	$54
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2019-12-31	$11
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2019-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2019-12-31	No
Value of net income/loss	2019-12-31	$2,088,725
Value of net assets at end of year (total assets less liabilities)	2019-12-31	$12,346,757
Value of net assets at beginning of year (total assets less liabilities)	2019-12-31	$10,258,032
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2019-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2019-12-31	No
Were any leases to which the plan was party in default or uncollectible	2019-12-31	No
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2019-12-31	$354,865
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2019-12-31	$314,065
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2019-12-31	$314,065
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2019-12-31	$5,145
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2019-12-31	No
Was there a failure to transmit to the plan any participant contributions	2019-12-31	No
Has the plan failed to provide any benefit when due under the plan	2019-12-31	No
Assets. Invements in employer securities at end of year	2019-12-31	$12,725,588
Assets. Invements in employer securities at beginning of year	2019-12-31	$10,945,827
Contributions received in cash from employer	2019-12-31	$302,657
Employer contributions (assets) at end of year	2019-12-31	$17,711
Employer contributions (assets) at beginning of year	2019-12-31	$0
Income. Dividends from common stock	2019-12-31	$345,955
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2019-12-31	$553,792
Did the plan have assets held for investment	2019-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2019-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2019-12-31	No
Liabilities. Value of acquisition indebtedness at end of year	2019-12-31	$751,914
Liabilities. Value of acquisition indebtedness at beginning of year	2019-12-31	$1,001,914
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2019-12-31	No
Opinion of an independent qualified public accountant for this plan	2019-12-31	Unqualified
Accountancy firm name	2019-12-31	PKF O'CONNOR DAVIES, LLP
Accountancy firm EIN	2019-12-31	271728945
2018 : BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2018 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2018-12-31	$-1,454,928
Total unrealized appreciation/depreciation of assets	2018-12-31	$-1,454,928
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2018-12-31	$1,001,914
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2018-12-31	$1,251,914
Expenses. Interest paid	2018-12-31	$98,393
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2018-12-31	$98,393
Total income from all sources (including contributions)	2018-12-31	$-825,610
Total loss/gain on sale of assets	2018-12-31	$0
Total of all expenses incurred	2018-12-31	$1,164,375
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2018-12-31	$1,052,988
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2018-12-31	$304,939
Value of total assets at end of year	2018-12-31	$11,259,946
Value of total assets at beginning of year	2018-12-31	$13,499,931
Total of administrative expenses incurred including professional, contract, advisory and management fees	2018-12-31	$12,994
Total interest from all sources	2018-12-31	$3,454
Total dividends received (eg from common stock, registered investment company shares)	2018-12-31	$320,925
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2018-12-31	No
Administrative expenses professional fees incurred	2018-12-31	$12,994
Was this plan covered by a fidelity bond	2018-12-31	Yes
Value of fidelity bond cover	2018-12-31	$7,000,000
If this is an individual account plan, was there a blackout period	2018-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2018-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2018-12-31	No
Value of other receiveables (less allowance for doubtful accounts) at end of year	2018-12-31	$54
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2018-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2018-12-31	No
Value of net income/loss	2018-12-31	$-1,989,985
Value of net assets at end of year (total assets less liabilities)	2018-12-31	$10,258,032
Value of net assets at beginning of year (total assets less liabilities)	2018-12-31	$12,248,017
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2018-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2018-12-31	No
Were any leases to which the plan was party in default or uncollectible	2018-12-31	No
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2018-12-31	$314,065
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2018-12-31	$286,591
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2018-12-31	$286,591
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2018-12-31	$3,454
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2018-12-31	No
Was there a failure to transmit to the plan any participant contributions	2018-12-31	No
Has the plan failed to provide any benefit when due under the plan	2018-12-31	No
Assets. Invements in employer securities at end of year	2018-12-31	$10,945,827
Assets. Invements in employer securities at beginning of year	2018-12-31	$13,213,340
Contributions received in cash from employer	2018-12-31	$304,939
Income. Dividends from common stock	2018-12-31	$320,925
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2018-12-31	$1,052,988
Did the plan have assets held for investment	2018-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2018-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2018-12-31	No
Liabilities. Value of acquisition indebtedness at end of year	2018-12-31	$1,001,914
Liabilities. Value of acquisition indebtedness at beginning of year	2018-12-31	$1,251,914
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2018-12-31	No
Opinion of an independent qualified public accountant for this plan	2018-12-31	Unqualified
Accountancy firm name	2018-12-31	PKF O'CONNOR DAVIES, LLP
Accountancy firm EIN	2018-12-31	271728945
2017 : BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2017 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2017-12-31	$-669,452
Total unrealized appreciation/depreciation of assets	2017-12-31	$-669,452
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2017-12-31	$1,251,914
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2017-12-31	$1,501,914
Expenses. Interest paid	2017-12-31	$119,643
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2017-12-31	$119,643
Total income from all sources (including contributions)	2017-12-31	$-18,903
Total loss/gain on sale of assets	2017-12-31	$0
Total of all expenses incurred	2017-12-31	$1,308,789
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2017-12-31	$1,157,305
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2017-12-31	$337,809
Value of total assets at end of year	2017-12-31	$13,499,931
Value of total assets at beginning of year	2017-12-31	$15,077,623
Total of administrative expenses incurred including professional, contract, advisory and management fees	2017-12-31	$31,841
Total interest from all sources	2017-12-31	$1,536
Total dividends received (eg from common stock, registered investment company shares)	2017-12-31	$311,204
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2017-12-31	No
Administrative expenses professional fees incurred	2017-12-31	$31,841
Was this plan covered by a fidelity bond	2017-12-31	Yes
Value of fidelity bond cover	2017-12-31	$7,000,000
If this is an individual account plan, was there a blackout period	2017-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2017-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2017-12-31	No
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2017-12-31	No
Value of net income/loss	2017-12-31	$-1,327,692
Value of net assets at end of year (total assets less liabilities)	2017-12-31	$12,248,017
Value of net assets at beginning of year (total assets less liabilities)	2017-12-31	$13,575,709
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2017-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2017-12-31	No
Were any leases to which the plan was party in default or uncollectible	2017-12-31	No
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2017-12-31	$286,591
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2017-12-31	$308,275
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2017-12-31	$308,275
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2017-12-31	$1,536
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2017-12-31	No
Was there a failure to transmit to the plan any participant contributions	2017-12-31	No
Has the plan failed to provide any benefit when due under the plan	2017-12-31	No
Assets. Invements in employer securities at end of year	2017-12-31	$13,213,340
Assets. Invements in employer securities at beginning of year	2017-12-31	$14,769,348
Contributions received in cash from employer	2017-12-31	$337,809
Income. Dividends from common stock	2017-12-31	$311,204
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2017-12-31	$1,157,305
Did the plan have assets held for investment	2017-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2017-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2017-12-31	No
Liabilities. Value of acquisition indebtedness at end of year	2017-12-31	$1,251,914
Liabilities. Value of acquisition indebtedness at beginning of year	2017-12-31	$1,501,914
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2017-12-31	No
Opinion of an independent qualified public accountant for this plan	2017-12-31	Unqualified
Accountancy firm name	2017-12-31	BATCHELOR FRECHETTE MCCRORY MICHAEL
Accountancy firm EIN	2017-12-31	050487888
2016 : BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2016 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2016-12-31	$4,405,506
Total unrealized appreciation/depreciation of assets	2016-12-31	$4,405,506
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2016-12-31	$1,501,914
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2016-12-31	$1,751,914
Expenses. Interest paid	2016-12-31	$141,301
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2016-12-31	$141,301
Total income from all sources (including contributions)	2016-12-31	$5,088,627
Total loss/gain on sale of assets	2016-12-31	$3,491
Total of all expenses incurred	2016-12-31	$915,844
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2016-12-31	$738,191
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2016-12-31	$350,934
Value of total assets at end of year	2016-12-31	$15,077,623
Value of total assets at beginning of year	2016-12-31	$11,154,840
Total of administrative expenses incurred including professional, contract, advisory and management fees	2016-12-31	$36,352
Total interest from all sources	2016-12-31	$492
Total dividends received (eg from common stock, registered investment company shares)	2016-12-31	$328,204
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2016-12-31	No
Administrative expenses professional fees incurred	2016-12-31	$36,352
Was this plan covered by a fidelity bond	2016-12-31	Yes
Value of fidelity bond cover	2016-12-31	$7,000,000
If this is an individual account plan, was there a blackout period	2016-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2016-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2016-12-31	No
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2016-12-31	No
Value of net income/loss	2016-12-31	$4,172,783
Value of net assets at end of year (total assets less liabilities)	2016-12-31	$13,575,709
Value of net assets at beginning of year (total assets less liabilities)	2016-12-31	$9,402,926
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2016-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2016-12-31	No
Were any leases to which the plan was party in default or uncollectible	2016-12-31	No
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2016-12-31	$308,275
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2016-12-31	$311,766
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2016-12-31	$311,766
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2016-12-31	$492
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2016-12-31	No
Was there a failure to transmit to the plan any participant contributions	2016-12-31	No
Has the plan failed to provide any benefit when due under the plan	2016-12-31	No
Assets. Invements in employer securities at end of year	2016-12-31	$14,769,348
Assets. Invements in employer securities at beginning of year	2016-12-31	$10,843,074
Contributions received in cash from employer	2016-12-31	$350,934
Income. Dividends from common stock	2016-12-31	$328,204
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2016-12-31	$738,191
Did the plan have assets held for investment	2016-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2016-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2016-12-31	No
Aggregate proceeds on sale of assets	2016-12-31	$3,491
Liabilities. Value of acquisition indebtedness at end of year	2016-12-31	$1,501,914
Liabilities. Value of acquisition indebtedness at beginning of year	2016-12-31	$1,751,914
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2016-12-31	No
Opinion of an independent qualified public accountant for this plan	2016-12-31	Unqualified
Accountancy firm name	2016-12-31	BATCHELOR FRECHETTE MCCRORY MICHAEL
Accountancy firm EIN	2016-12-31	050487888
2015 : BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2015 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2015-12-31	$1,386,028
Total unrealized appreciation/depreciation of assets	2015-12-31	$1,386,028
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2015-12-31	$1,751,914
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2015-12-31	$2,001,914
Expenses. Interest paid	2015-12-31	$162,143
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2015-12-31	$162,143
Total income from all sources (including contributions)	2015-12-31	$2,094,562
Total loss/gain on sale of assets	2015-12-31	$3,072
Total of all expenses incurred	2015-12-31	$883,955
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2015-12-31	$685,681
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2015-12-31	$359,023
Value of total assets at end of year	2015-12-31	$11,154,840
Value of total assets at beginning of year	2015-12-31	$10,194,233
Total of administrative expenses incurred including professional, contract, advisory and management fees	2015-12-31	$36,131
Total interest from all sources	2015-12-31	$261
Total dividends received (eg from common stock, registered investment company shares)	2015-12-31	$346,178
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2015-12-31	No
Administrative expenses professional fees incurred	2015-12-31	$36,131
Was this plan covered by a fidelity bond	2015-12-31	Yes
Value of fidelity bond cover	2015-12-31	$7,000,000
If this is an individual account plan, was there a blackout period	2015-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2015-12-31	No
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2015-12-31	No
Value of net income/loss	2015-12-31	$1,210,607
Value of net assets at end of year (total assets less liabilities)	2015-12-31	$9,402,926
Value of net assets at beginning of year (total assets less liabilities)	2015-12-31	$8,192,319
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2015-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2015-12-31	No
Were any leases to which the plan was party in default or uncollectible	2015-12-31	No
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2015-12-31	$311,766
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2015-12-31	$306,860
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2015-12-31	$306,860
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2015-12-31	$261
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2015-12-31	No
Was there a failure to transmit to the plan any participant contributions	2015-12-31	No
Has the plan failed to provide any benefit when due under the plan	2015-12-31	No
Assets. Invements in employer securities at end of year	2015-12-31	$10,843,074
Assets. Invements in employer securities at beginning of year	2015-12-31	$9,887,373
Contributions received in cash from employer	2015-12-31	$359,023
Income. Dividends from common stock	2015-12-31	$346,178
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2015-12-31	$685,681
Did the plan have assets held for investment	2015-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2015-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2015-12-31	No
Aggregate proceeds on sale of assets	2015-12-31	$3,072
Liabilities. Value of acquisition indebtedness at end of year	2015-12-31	$1,751,914
Liabilities. Value of acquisition indebtedness at beginning of year	2015-12-31	$2,001,914
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2015-12-31	No
Opinion of an independent qualified public accountant for this plan	2015-12-31	Unqualified
Accountancy firm name	2015-12-31	BATCHELOR FRECHETTE MCCRORY MICHAEL
Accountancy firm EIN	2015-12-31	050487888
2014 : BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2014 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2014-12-31	$473,185
Total unrealized appreciation/depreciation of assets	2014-12-31	$473,185
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2014-12-31	$2,001,914
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2014-12-31	$2,251,914
Expenses. Interest paid	2014-12-31	$183,393
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2014-12-31	$183,393
Total income from all sources (including contributions)	2014-12-31	$1,174,641
Total loss/gain on sale of assets	2014-12-31	$-1,425
Total of all expenses incurred	2014-12-31	$674,617
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2014-12-31	$462,037
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2014-12-31	$363,409
Value of total assets at end of year	2014-12-31	$10,194,233
Value of total assets at beginning of year	2014-12-31	$9,944,209
Total of administrative expenses incurred including professional, contract, advisory and management fees	2014-12-31	$29,187
Total interest from all sources	2014-12-31	$145
Total dividends received (eg from common stock, registered investment company shares)	2014-12-31	$339,327
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2014-12-31	No
Administrative expenses professional fees incurred	2014-12-31	$24,937
Was this plan covered by a fidelity bond	2014-12-31	Yes
Value of fidelity bond cover	2014-12-31	$7,000,000
If this is an individual account plan, was there a blackout period	2014-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2014-12-31	No
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2014-12-31	No
Value of net income/loss	2014-12-31	$500,024
Value of net assets at end of year (total assets less liabilities)	2014-12-31	$8,192,319
Value of net assets at beginning of year (total assets less liabilities)	2014-12-31	$7,692,295
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2014-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2014-12-31	No
Were any leases to which the plan was party in default or uncollectible	2014-12-31	No
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2014-12-31	$306,860
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2014-12-31	$304,802
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2014-12-31	$304,802
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2014-12-31	$145
Expenses. Payments to insurance carriers foe the provision of benefits	2014-12-31	$0
Net investment gain or loss from common/collective trusts	2014-12-31	$0
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2014-12-31	No
Was there a failure to transmit to the plan any participant contributions	2014-12-31	No
Has the plan failed to provide any benefit when due under the plan	2014-12-31	No
Assets. Invements in employer securities at end of year	2014-12-31	$9,887,373
Assets. Invements in employer securities at beginning of year	2014-12-31	$9,639,407
Contributions received in cash from employer	2014-12-31	$363,409
Income. Dividends from common stock	2014-12-31	$339,327
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2014-12-31	$462,037
Contract administrator fees	2014-12-31	$4,250
Did the plan have assets held for investment	2014-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2014-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2014-12-31	No
Aggregate proceeds on sale of assets	2014-12-31	$-1,425
Liabilities. Value of acquisition indebtedness at end of year	2014-12-31	$2,001,914
Liabilities. Value of acquisition indebtedness at beginning of year	2014-12-31	$2,251,914
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2014-12-31	No
Opinion of an independent qualified public accountant for this plan	2014-12-31	Unqualified
Accountancy firm name	2014-12-31	BATCHELOR FRECHETTE MCCRORY MICHAEL
Accountancy firm EIN	2014-12-31	050487888

Form 5500 Responses for BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN

2022: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2022 form 5500 responses
2022-01-01	Type of plan entity	Single employer plan
2022-01-01	Submission has been amended	No
2022-01-01	This submission is the final filing	No
2022-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2022-01-01	Plan is a collectively bargained plan	No
2022-01-01	Plan funding arrangement – Trust	Yes
2022-01-01	Plan benefit arrangement - Trust	Yes
2021: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2021 form 5500 responses
2021-01-01	Type of plan entity	Single employer plan
2021-01-01	Submission has been amended	No
2021-01-01	This submission is the final filing	No
2021-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2021-01-01	Plan is a collectively bargained plan	No
2021-01-01	Plan funding arrangement – Trust	Yes
2021-01-01	Plan benefit arrangement - Trust	Yes
2020: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2020 form 5500 responses
2020-01-01	Type of plan entity	Single employer plan
2020-01-01	Submission has been amended	No
2020-01-01	This submission is the final filing	No
2020-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2020-01-01	Plan is a collectively bargained plan	No
2020-01-01	Plan funding arrangement – Trust	Yes
2020-01-01	Plan benefit arrangement - Trust	Yes
2019: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2019 form 5500 responses
2019-01-01	Type of plan entity	Single employer plan
2019-01-01	Submission has been amended	No
2019-01-01	This submission is the final filing	No
2019-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2019-01-01	Plan is a collectively bargained plan	No
2019-01-01	Plan funding arrangement – Trust	Yes
2019-01-01	Plan benefit arrangement - Trust	Yes
2018: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2018 form 5500 responses
2018-01-01	Type of plan entity	Single employer plan
2018-01-01	Submission has been amended	No
2018-01-01	This submission is the final filing	No
2018-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2018-01-01	Plan is a collectively bargained plan	No
2018-01-01	Plan funding arrangement – Trust	Yes
2018-01-01	Plan benefit arrangement - Trust	Yes
2017: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2017 form 5500 responses
2017-01-01	Type of plan entity	Single employer plan
2017-01-01	Submission has been amended	No
2017-01-01	This submission is the final filing	No
2017-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2017-01-01	Plan is a collectively bargained plan	No
2017-01-01	Plan funding arrangement – Trust	Yes
2017-01-01	Plan benefit arrangement - Trust	Yes
2016: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2016 form 5500 responses
2016-01-01	Type of plan entity	Single employer plan
2016-01-01	Submission has been amended	No
2016-01-01	This submission is the final filing	No
2016-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2016-01-01	Plan is a collectively bargained plan	No
2016-01-01	Plan funding arrangement – Trust	Yes
2016-01-01	Plan benefit arrangement - Trust	Yes
2015: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2015 form 5500 responses
2015-01-01	Type of plan entity	Single employer plan
2015-01-01	Submission has been amended	No
2015-01-01	This submission is the final filing	No
2015-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2015-01-01	Plan is a collectively bargained plan	No
2015-01-01	Plan funding arrangement – Trust	Yes
2015-01-01	Plan benefit arrangement - Trust	Yes
2014: BROOKLINE BANCORP, INC EMPLOYEE STOCK OWNERSHIP PLAN 2014 form 5500 responses
2014-01-01	Type of plan entity	Single employer plan
2014-01-01	Submission has been amended	No
2014-01-01	This submission is the final filing	No
2014-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2014-01-01	Plan is a collectively bargained plan	No
2014-01-01	Plan funding arrangement – Trust	Yes
2014-01-01	Plan benefit arrangement - Trust	Yes

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Company Name:	BROOKLINE BANCORP, INC.
Employer identification number (EIN):	043402944
NAIC Classification:	522120
NAIC Description:	Savings Institutions