Brookline Bancorp, Inc.
US ˙ NasdaqGS ˙ US11373M1071
DIESES SYMBOL IST NICHT MEHR AKTIV

SecurityBRKL / Brookline Bancorp, Inc.
InstitutionFirst Manhattan Co
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
First Manhattan Co closes position in BRKL / Brookline Bancorp, Inc.

On November 14, 2025 - First Manhattan Co filed a 13F-HR form disclosing ownership of 0 shares of Brookline Bancorp, Inc. (US:BRKL) valued at $0 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 14, 2025 disclosing 38,675 shares of Brookline Bancorp, Inc.. The current value of the position is $0 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2025-11-14 2025-09-30 13F BROOKLINE BANCORP INC DEL COM 11373M107 0 -100.00 0
2025-08-14 2025-06-30 13F BROOKLINE BANCORP INC DEL COM 11373M107 38,675 0 0.00 408 -3.09 0.0012
2025-05-15 2025-03-31 13F BROOKLINE BANCORP INC DEL COM 11373M107 38,675 0 0.00 422 -7.68 0.0012
2025-02-14 2024-12-31 13F BROOKLINE BANCORP INC DEL COM 11373M107 38,675 0 0.00 456 16.92 0.0013
2024-11-14 2024-09-30 13F BROOKLINE BANCORP INC DEL COM 11373M107 38,675 -3,700 -8.73 390 10.48 0.0012
2024-08-15 2024-06-30 13F/A-1 BROOKLINE BANCORP INC DEL COM 11373M107 42,375 0 0.00 354 -16.35 0.0011
2024-08-14 2024-06-30 13F BROOKLINE BANCORP INC DEL COM 11373M107 42,375 0 354 0.0011
2024-05-15 2024-03-31 13F BROOKLINE BANCORP INC DEL COM 11373M107 42,375 0 0.00 422 -8.66 0.0014
2024-02-13 2023-12-31 13F BROOKLINE BANCORP INC DEL COM 11373M107 42,375 -35,480 -45.57 462 -34.84 0.0016
2023-11-14 2023-09-30 13F BROOKLINE BANCORP INC DEL COM 11373M107 77,855 -17,000 -17.92 709 -14.48 0.0026
2023-08-14 2023-06-30 13F BROOKLINE BANCORP INC DEL COM 11373M107 94,855 -50,202 -34.61 829 -45.57 0.0030
2023-05-15 2023-03-31 13F BROOKLINE BANCORP INC DEL COM 11373M107 145,057 -64,297 -30.71 1,523 -48.58 0.0058
2023-02-14 2022-12-31 13F BROOKLINE BANCORP INC DEL COM 11373M107 209,354 0 0.00 2,962 21.49 0.0109
2022-11-14 2022-09-30 13F BROOKLINE BANCORP INC DEL COM 11373M107 209,354 -12,600 -5.68 2,438 -17.47 0.0103
2022-08-15 2022-06-30 13F BROOKLINE BANCORP INC DEL COM 11373M107 221,954 1,150 0.52 2,954 -15.43 0.0119
2022-05-16 2022-03-31 13F BROOKLINE BANCORP INC DEL COM 11373M107 220,804 0 0.00 3,493 -2.27 0.0114
2022-02-14 2021-12-31 13F BROOKLINE BANCORP INC DEL COM 11373M107 220,804 1,750 0.80 3,574 6.94 0.0118
2021-11-15 2021-09-30 13F BROOKLINE BANCORP INC DEL COM 11373M107 219,054 -13,700 -5.89 3,342 -3.94 0.0123
2021-08-16 2021-06-30 13F BROOKLINE BANCORP INC DEL COM 11373M107 232,754 0 0.00 3,479 -0.34 0.0127
2021-05-14 2021-03-31 13F BROOKLINE BANCORP INC DEL COM 11373M107 232,754 -7,000 -2.92 3,491 20.96 0.0150
2021-02-16 2020-12-31 13F BROOKLINE BANCORP INC DEL COM 11373M107 239,754 -15,500 -6.07 2,886 30.83 0.0138
2020-11-12 2020-09-30 13F BROOKLINE BANCORP IN COMMON 11373M107 255,254 -1,000 -0.39 2,206 -14.60 0.0114
2020-08-14 2020-06-30 13F BROOKLINE BANCORP IN COMMON 11373M107 256,254 -15,050 -5.55 2,583 -15.59 0.0149
2020-05-06 2020-03-31 13F BROOKLINE BANCORP IN COMMON 11373M107 271,304 -2,000 -0.73 3,060 -31.97 0.0198
2020-02-13 2019-12-31 13F BROOKLINE BANCORP IN COMMON 11373M107 273,304 0 0.00 4,498 11.75 0.0226
2019-11-13 2019-09-30 13F BROOKLINE BANCORP IN COMMON 11373M107 273,304 -4,000 -1.44 4,025 -5.61 0.0222
2019-08-16 2019-06-30 13F BROOKLINE BANCORP IN COMMON 11373M107 277,304 -1,500 -0.54 4,264 6.23 0.0237
2019-04-12 2019-03-31 13F BROOKLINE BANCORP IN COMMON 11373M107 278,804 -11,000 -3.80 4,014 0.22 0.0232
2019-01-30 2018-12-31 13F BROOKLINE BANCORP IN COMMON 11373M107 289,804 -3,300 -1.13 4,005 -18.17 0.0249
2018-10-15 2018-09-30 13F BROOKLINE BANCORP IN COMMON 11373M107 293,104 -4,800 -1.61 4,894 -11.68 0.0261
2018-08-01 2018-06-30 13F BROOKLINE BANCORP IN COMMON 11373M107 297,904 1,850 0.62 5,541 15.53 0.0319
2018-04-20 2018-03-31 13F BROOKLINE BANCORP IN COMMON 11373M107 296,054 0 0.00 4,796 3.18 0.0273
2018-01-22 2017-12-31 13F BROOKLINE BANCORP IN COMMON 11373M107 296,054 2,700 0.92 4,648 2.24 0.0255
2017-10-25 2017-09-30 13F BROOKLINE BANCORP IN COMMON 11373M107 293,354 0 0.00 4,546 6.17 0.0260
2017-08-10 2017-06-30 13F/A-2 BROOKLINE BANCORP IN COMMON 11373M107 293,354 102,780 53.93 4,282 43.59 0.0250
2017-08-01 2017-06-30 13F/A-1 BROOKLINE BANCORP IN COMMON 11373M107 293,354 0 4,282 0.0250
2017-07-28 2017-06-30 13F BROOKLINE BANCORP IN COMMON 11373M107 293,354 102,780 4,282
2017-04-25 2017-03-31 13F/A-1 BROOKLINE BANCORP IN COMMON 11373M107 190,574 0 0.00 2,982 -4.58 0.0177
2017-04-24 2017-03-31 13F BROOKLINE BANCORP IN COMMON NEW 11373M107 190,574 2,323
2017-01-25 2016-12-31 13F BROOKLINE BANCORP IN COMMON 11373M107 190,574 0 0.00 3,125 34.52 0.0190
2016-10-20 2016-09-30 13F BROOKLINE BANCORP IN COMMON NEW 11373M107 190,574 -7,500 -3.79 2,323 6.36 0.0142
2016-07-14 2016-06-30 13F BROOKLINE BANCORP IN COMMON NEW 11373M107 198,074 18,900 10.55 2,184 10.75 0.0134
2016-04-22 2016-03-31 13F BROOKLINE BANCORP IN COMMON NEW 11373M107 179,174 3,300 1.88 1,972 -2.47 0.0121
2016-01-20 2015-12-31 13F BROOKLINE BANCORP IN COMMON NEW 11373M107 175,874 -1,300 -0.73 2,022 12.58 0.0124
2015-10-26 2015-09-30 13F BROOKLINE BANCORP IN COMMON NEW 11373M107 177,174 0 0.00 1,796 -10.20 0.0115
2015-07-17 2015-06-30 13F BROOKLINE BANCORP IN COMMON NEW 11373M107 177,174 -7,000 -3.80 2,000 8.11 0.0118
2015-04-30 2015-03-31 13F BROOKLINE BANCORP IN COMMON NEW 11373M107 184,174 10,400 5.98 1,850 6.20 0.0107
2015-01-20 2014-12-31 13F BROOKLINE BANCORP IN COMMON NEW 11373M107 173,774 6,000 3.58 1,742 21.48 0.0099
2014-10-23 2014-09-30 13F BROOKLINE BANCORP IN COMMON NEW 11373M107 167,774 15,500 10.18 1,434 0.56 0.0083
2014-08-14 2014-06-30 13F/A-1 BROOKLINE BANCORP IN COMMON NEW 11373M107 152,274 27,802 22.34 1,426 21.67 0.0090
2014-05-16 2014-03-31 13F BROOKLINE BANCORP IN COMMON NEW 11373M107 124,472 4,126 3.43 1,172 2.00 0.0077
2014-02-04 2013-12-31 13F BROOKLINE BANCORP IN COMMON NEW 11373M107 120,346 0 0.00 1,149 1.59 0.0076
2013-10-29 2013-09-30 13F BROOKLINE BANCORP IN COMMON NEW 11373M107 120,346 7,000 6.18 1,131 3.01 0.0079
2013-08-13 2013-06-30 13F BROOKLINE BANCORP IN COMMON NEW 11373M107 113,346 113,346 1,098 0.0076
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.