UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

FORM 10-Q

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)(Mark One)

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended September 30, 2017March 31, 2023

OR
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from           N/A           to                                 .
Commission file number 0-23695


Brookline Bancorp, Inc.BROOKLINE BANCORP INC.
(Exact name of registrant as specified in its charter)
Delaware04-3402944
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer Identification No.)
Delaware04-3402944
(State or other jurisdiction of incorporation or organization)(I.R.S. Employer Identification No.)
131 Clarendon Street
Boston MA02116
(Address of principal executive offices)(Zip Code)
(617) 425-4600
(Registrant’s telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common StockBRKLNasdaq Global Select Market

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days.  YES  x  NO  oYes    No  
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).  YES  x  NO  oYes    No  
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12-b-2 of the Exchange Act.
Large accelerated filerAccelerated filer
Large accelerated filerxAccelerated filero
Non-accelerated filer
o (Do not check if a smaller reporting company)
Smaller Reporting Companyo
Emerging growth companyo
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o




Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  YES  o  NO  xYes     No  
At November 3, 2017,April 30, 2023, the number of shares of common stock, par value $0.01 per share, outstanding was 76,652,372.
88,665,135.




BROOKLINE BANCORP, INC. AND SUBSIDIARIES
FORM 10-Q
Table of Contents
Page
Page
Item 1.



Table of Contents
PART I — FINANCIAL INFORMATION
Item 1. Unaudited Consolidated Financial Statements
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Unaudited Consolidated Balance Sheets
At March 31, 2023At December 31, 2022
(In Thousands Except Share Data)
ASSETS
Cash and due from banks$30,782 $191,767 
Short-term investments455,538 191,192 
Total cash and cash equivalents486,320 382,959 
Investment securities available-for-sale, net1,067,032 656,766 
Total investment securities1,067,032 656,766 
Loans and leases:
Commercial real estate loans5,610,414 4,404,148 
Commercial loans and leases2,147,149 2,016,499 
Consumer loans1,489,402 1,223,741 
Total loans and leases9,246,965 7,644,388 
Allowance for loan and lease losses(120,865)(98,482)
Net loans and leases9,126,100 7,545,906 
Restricted equity securities86,230 71,307 
Premises and equipment, net of accumulated depreciation of $100,192 and $92,219, respectively87,799 71,391 
Right-of-use asset operating leases30,067 19,484 
Deferred tax asset75,028 52,237 
Goodwill241,222 160,427 
Identified intangible assets, net of accumulated amortization of $42,089 and $40,123, respectively30,080 1,781 
Other real estate owned ("OREO") and repossessed assets, net508 408 
Other assets292,099 223,170 
Total assets$11,522,485 $9,185,836 
LIABILITIES AND STOCKHOLDERS' EQUITY  
Deposits:  
Demand checking accounts$1,899,370 $1,802,518 
 Interest-bearing deposits6,557,092 4,719,628 
Total deposits8,456,462 6,522,146 
Borrowed funds:  
Advances from the Federal Home Loan Bank of Boston and New York ("FHLB")1,458,457 1,237,823 
Subordinated debentures and notes84,080 84,044 
Other borrowed funds87,565 110,785 
Total borrowed funds1,630,102 1,432,652 
Operating lease liabilities31,373 19,484 
Mortgagors' escrow accounts17,080 5,607 
Reserve for unfunded credits23,112 20,602 
Accrued expenses and other liabilities199,290 193,220 
Total liabilities10,357,419 8,193,711 
Commitments and contingencies (Note 12)
Stockholders' Equity:  
Common stock, $0.01 par value; 200,000,000 shares authorized; 96,998,075 shares issued and 85,177,172 shares issued, respectively970 852 
Additional paid-in capital904,174 736,074 
Retained earnings407,528 412,019 
Accumulated other comprehensive (loss) income(52,688)(61,947)
Treasury stock, at cost; 7,734,891 shares and 7,731,445 shares, respectively(94,918)(94,873)
Total stockholders' equity1,165,066 992,125 
Total liabilities and stockholders' equity$11,522,485 $9,185,836 
See accompanying notes to unaudited consolidated financial statements.
1
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Unaudited Consolidated Balance Sheets
 At September 30, 2017 At December 31, 2016
 (In Thousands Except Share Data)
ASSETS   
Cash and due from banks$35,392
 $36,055
Short-term investments27,971
 31,602
Total cash and cash equivalents63,363
 67,657
Investment securities available-for-sale522,910
 523,634
Investment securities held-to-maturity (fair value of $107,220 and $85,271, respectively)107,738
 87,120
Total investment securities630,648
 610,754
Loans held-for-sale2,973
 13,078
Loans and leases:   
Commercial real estate loans3,029,009
 2,918,567
Commercial loans and leases1,585,296
 1,495,408
Consumer loans1,025,135
 984,889
Total loans and leases5,639,440
 5,398,864
Allowance for loan and lease losses(65,413) (53,666)
Net loans and leases5,574,027
 5,345,198
Restricted equity securities62,135
 64,511
Premises and equipment, net of accumulated depreciation of $61,716 and $58,790, respectively81,159
 76,176
Deferred tax asset28,093
 25,247
Goodwill137,890
 137,890
Identified intangible assets, net of accumulated amortization of $33,219 and $31,649, respectively6,563
 8,133
Other real estate owned ("OREO") and repossessed assets, net4,398
 1,399
Other assets95,035
 88,086
Total assets$6,686,284
 $6,438,129
LIABILITIES AND STOCKHOLDERS' EQUITY   
Deposits:   
Demand checking accounts$905,472
 $900,474
Interest-bearing deposits:   
NOW accounts318,284
 323,160
Savings accounts665,558
 613,061
Money market accounts1,749,040
 1,733,359
Certificate of deposit accounts1,167,329
 1,041,022
Total interest-bearing deposits3,900,211
 3,710,602
Total deposits4,805,683
 4,611,076
Borrowed funds:   
Advances from the Federal Home Loan Bank of Boston ("FHLBB")872,579
 910,774
Subordinated debentures and notes
83,229
 83,105
Other borrowed funds30,087
 50,207
Total borrowed funds985,895
 1,044,086
Mortgagors' escrow accounts8,151
 7,645
Accrued expenses and other liabilities74,019
 72,573
Total liabilities5,873,748
 5,735,380
    
Commitments and contingencies (Note 12)
 
Stockholders' Equity:   
Brookline Bancorp, Inc. stockholders' equity:   
Common stock, $0.01 par value; 200,000,000 shares authorized; 81,695,695 shares issued and 75,744,445 shares issued, respectively817
 757
Additional paid-in capital697,888
 616,734
Retained earnings, partially restricted160,225
 136,671
Accumulated other comprehensive loss(1,893) (3,818)
Treasury stock, at cost; 4,572,954 shares and 4,707,096 shares, respectively(51,452) (53,837)
Unallocated common stock held by Employee Stock Ownership Plan ("ESOP"); 150,921 shares and 176,688 shares, respectively(823) (963)
Total Brookline Bancorp, Inc. stockholders' equity804,762
 695,544
Noncontrolling interest in subsidiary7,774
 7,205
Total stockholders' equity812,536
 702,749
Total liabilities and stockholders' equity$6,686,284
 $6,438,129
    

Table of Contents


BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Unaudited Consolidated Statements of Income
Three Months Ended March 31,
20232022
(In Thousands Except Share Data)
Interest and dividend income:
Loans and leases$121,931 $71,721 
Debt securities7,870 2,996 
Restricted equity securities1,255 328 
Short-term investments1,495 66 
Total interest and dividend income132,551 75,111 
Interest expense:
Deposits29,368 3,771 
Borrowed funds17,134 1,492 
Total interest expense46,502 5,263 
Net interest income86,049 69,848 
Provision (credit) for credit losses25,542 (164)
Provision for investment losses— 
Net interest income after provision for credit losses60,507 70,008 
Non-interest income:
Deposit fees2,657 2,500 
Loan fees391 747 
Loan level derivative income, net2,373 686 
Gain on investment securities, net1,701 — 
Gain on sales of loans and leases held-for-sale1,638 344 
Other4,177 1,252 
Total non-interest income12,937 5,529 
Non-interest expense:
Compensation and employee benefits36,565 26,884 
Occupancy5,223 4,284 
Equipment and data processing6,462 5,078 
Professional services1,430 1,226 
FDIC insurance1,244 728 
Advertising and marketing1,410 1,272 
Amortization of identified intangible assets1,966 134 
Merger and acquisition expense6,409 — 
Other4,067 2,881 
Total non-interest expense64,776 42,487 
Income before provision for income taxes8,668 33,050 
Provision for income taxes1,108 8,345 
Net income$7,560 $24,705 
Earnings per common share:
Basic$0.09 $0.32 
Diluted0.09 0.32 
Weighted average common shares outstanding during the year:
Basic86,563,641 77,617,227 
Diluted86,837,806 77,926,822 
Dividends paid per common share$0.135 $0.125 

See accompanying notes to unaudited consolidated financial statements.
2
 Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016
 (In Thousands Except Share Data)
Interest and dividend income:       
Loans and leases$63,054
 $57,858
 $182,750
 $167,474
Debt securities3,154
 2,822
 9,310
 8,829
Marketable and restricted equity securities788
 804
 2,311
 2,213
Short-term investments180
 47
 342
 149
Total interest and dividend income67,176
 61,531
 194,713
 178,665
Interest expense:       
Deposits5,984
 5,112
 16,607
 14,875
Borrowed funds4,349
 4,069
 12,582
 11,980
Total interest expense10,333
 9,181
 29,189
 26,855
Net interest income56,843
 52,350
 165,524
 151,810
Provision for credit losses2,911
 2,215
 17,186
 7,138
Net interest income after provision for credit losses53,932
 50,135
 148,338
 144,672
Non-interest income:       
Deposit fees2,547
 2,289
 7,508
 6,650
Loan fees282
 330
 772
 977
Loan level derivative income, net844
 858
 1,432
 3,697
Gain on sales of investment securities, net
 
 11,393
 
Gain on sales of loans and leases held-for-sale1,049
 588
 1,709
 1,986
Other1,251
 1,264
 3,544
 3,893
Total non-interest income5,973
 5,329
 26,358
 17,203
Non-interest expense:       
Compensation and employee benefits21,067
 20,369
 61,761
 58,179
Occupancy3,650
 3,411
 10,952
 10,328
Equipment and data processing4,210
 3,826
 12,437
 11,468
Professional services973
 997
 3,115
 2,925
FDIC insurance842
 956
 2,648
 2,677
Advertising and marketing839
 844
 2,513
 2,558
Amortization of identified intangible assets519
 623
 1,570
 1,879
Merger and acquisition expense205
 
 205
 
Other3,103
 2,362
 8,758
 7,707
Total non-interest expense35,408
 33,388
 103,959
 97,721
Income before provision for income taxes24,497
 22,076
 70,737
 64,154
Provision for income taxes8,330
 7,804
 24,924
 22,868
Net income before noncontrolling interest in subsidiary16,167
 14,272
 45,813
 41,286
Less net income attributable to noncontrolling interest in subsidiary801
 655
 2,122
 2,203
Net income attributable to Brookline Bancorp, Inc.$15,366
 $13,617
 $43,691
 $39,083
Earnings per common share:       
Basic$0.20
 $0.19
 $0.59
 $0.56
Diluted0.20
 0.19
 0.59
 0.56
Weighted average common shares outstanding during the year:       
Basic76,452,539
 70,299,722
 73,743,658
 70,228,127
Diluted76,759,430
 70,450,760
 74,117,180
 70,394,465
Dividends declared per common share$0.09
 $0.09
 $0.27
 $0.27

Table of Contents



BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Unaudited Consolidated Statements of Comprehensive Income
Three Months Ended March 31,
20232022
(In Thousands)
Net income$7,560 $24,705 
Investment securities available-for-sale:
Unrealized securities holding gains (losses)10,140 (37,542)
Non-credit gain on impairment of securities— — 
Income tax (expense) benefit(2,229)8,275 
Net unrealized securities holding gains (losses) before reclassification adjustments, net of taxes7,911 (29,267)
Less reclassification adjustments for securities gains (losses) included in net income:
Gain (loss) on sales of securities, net— — 
Income tax (expense) benefit— — 
Net reclassification adjustments for securities gains (losses) included in net income— — 
Net unrealized securities holding gains (losses)7,911 (29,267)
Cash flow hedges:
Change in fair value of cash flow hedges1,278 57 
Income tax (expense) benefit(332)— 
Net change in fair value of cash flow hedges, net of taxes946 57 
Less reclassification adjustment for change in fair value of cash flow hedges:
         Gain (loss) on change in fair value of cash flow hedges(543)
Income tax (expense) benefit141 — 
Net reclassification adjustment for change in fair value of cash flow hedges(402)
Net change in fair value of cash flow hedges1,348 55
Other comprehensive income (loss), net of taxes9,259 (29,212)
Comprehensive income$16,819 $(4,507)

See accompanying notes to unaudited consolidated financial statements.
3
 Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016
 (In Thousands)
Net income before noncontrolling interest in subsidiary$16,167
 $14,272
 $45,813
 $41,286
        
Investment securities available-for-sale:       
Unrealized securities holding gains (losses)439
 (1,672) 3,002
 11,486
Income tax (benefit) expense(157) 599
 (1,077) (4,114)
Net unrealized securities holding gains (losses) before reclassification adjustments, net of taxes282
 (1,073) 1,925
 7,372
        
Comprehensive income16,449
 13,199
 47,738
 48,658
Net income attributable to noncontrolling interest in subsidiary801
 655
 2,122
 2,203
Comprehensive income attributable to Brookline Bancorp, Inc.$15,648
 $12,544
 $45,616
 $46,455
   

Table of Contents




BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Unaudited Consolidated Statements of Changes in Stockholders' Equity
NineThree Months Ended September 30, 2017March 31, 2023 and 20162022

Common
Stock
Additional
Paid-in
Capital
Retained
Earnings
Accumulated
Other
Comprehensive
Income (Loss)
Treasury
Stock
Unallocated
Common Stock
Held by ESOP
Total Stockholders'
Equity
 (In Thousands)
Balance at December 31, 2022$852 $736,074 $412,019 $(61,947)$(94,873)— $992,125 
Net income— — 7,560 — — — 7,560 
PCSB acquisition118 167,524 — — — 167,642 
Other comprehensive income (loss)— — — 9,259 — — 9,259 
Common stock dividends of $0.135 per share— — (11,970)— — — (11,970)
Restricted stock awards issued, net of awards surrendered— (8)— — (45)— (53)
Compensation under recognition and retention plans— 584 (81)— — — 503 
Balance at March 31, 2023$970 $904,174 $407,528 $(52,688)$(94,918)$— $1,165,066 
Common
Stock
Additional
Paid-in
Capital
Retained
Earnings
Accumulated
Other
Comprehensive
Income (Loss)
Treasury
Stock
Unallocated
Common Stock
Held by ESOP
Total Stockholders'
Equity
 (In Thousands)
Balance at December 31, 2021$852 $736,826 $342,639 $(110)$(84,718)$(147)$995,342 
Net income— — 24,705 — — — 24,705 
Other comprehensive income (loss)— — — (29,212)— — (29,212)
Common stock dividends of $0.125 per share— — (9,705)— — — (9,705)
Compensation under recognition and retention plan— 757 (63)— — — 694 
Common stock held by ESOP committed to be released (6,609 shares)— 75 — — — 36 111 
Balance at March 31, 2022$852 $737,658 $357,576 $(29,322)$(84,718)$(111)$981,935 





See accompanying notes to unaudited consolidated financial statements.
4
 
Common
Stock
 
Additional
Paid-in
Capital
 
Retained
Earnings
 
Accumulated
Other
Comprehensive
(Loss) Income
 
Treasury
Stock
 
Unallocated
Common Stock
Held by ESOP
 
Total Brookline
Bancorp, Inc.
Stockholders'
Equity
 
Noncontrolling
Interest in
Subsidiary
 
Total Stockholders'
Equity
 (In Thousands)
Balance at December 31, 2016$757
 $616,734
 $136,671
 $(3,818) $(53,837) $(963) $695,544
 $7,205
 $702,749
Net income attributable to Brookline Bancorp, Inc. 
 
 43,691
 
 
 
 43,691
 
 43,691
Net income attributable to noncontrolling interest in subsidiary
 
 
 
 
 
 
 2,122
 2,122
Issuance of common stock60
 81,943
 
 
 
 
 82,003
 
 82,003
Issuance of noncontrolling units
 
 
 
 
 
 
 118
 118
Other comprehensive income
 
 

 1,925
 
 
 1,925
 
 1,925
Common stock dividends of $0.27 per share
 
 (20,137) 
 
 
 (20,137) 
 (20,137)
Dividend distribution to owners of noncontrolling interest in subsidiary
 
 
 
 
 
 
 (1,671) (1,671)
Compensation under recognition and retention plan
 (1,016) 
 
 2,385
 
 1,369
 
 1,369
Common stock held by ESOP committed to be released (25,767 shares)
 227
 
 
 
 140
 367
 
 367
Balance at September 30, 2017$817
 $697,888
 $160,225
 $(1,893) $(51,452) $(823) $804,762
 $7,774
 $812,536



BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Unaudited Consolidated Statements of Changes in Stockholders' Equity (Continued)Cash Flows
Nine Months Ended September 30, 2017 and 2016
Three Months Ended March 31,
20232022
(In Thousands)
Cash flows from operating activities:
Net income$7,560 $24,705 
Adjustments to reconcile net income to net cash provided from operating activities:
Provision (credit) for credit losses25,542 (164)
Deferred income tax (benefit) expense(1,470)376 
Depreciation of premises and equipment1,967 1,461 
Amortization (accretion) of investment securities premiums and discounts, net(2,473)646 
Amortization of deferred loan and lease origination costs, net1,063 1,438 
Amortization of identified intangible assets1,966 134 
Amortization of debt issuance costs25 26 
Amortization (accretion) of acquisition fair value adjustments, net(3,176)(3)
Gain on investment securities, net(1,701)— 
Gain on sales of loans and leases held-for-sale(1,638)(344)
Write-down (recovery) of other repossessed assets62 (8)
Compensation under recognition and retention plans814 694 
ESOP shares committed to be released— 111 
Net change in:
Cash surrender value of bank-owned life insurance138 (252)
Other assets6,787 22,908 
Accrued expenses and other liabilities(17,503)(35,584)
Net cash provided from operating activities17,963 16,144 
Cash flows from investing activities:
Proceeds from sales of investment securities available-for-sale224,832 — 
Proceeds from maturities, calls, and principal repayments of investment securities available-for-sale33,064 36,251 
Purchases of investment securities available-for-sale(274,440)(84,135)
Proceeds from redemption/sales of restricted equity securities16,198 3,860 
Purchase of restricted equity securities(27,119)(3,945)
Proceeds from sales of loans and leases held-for-investment, net128,942 28,093 
Net increase in loans and leases(430,373)(100,454)
Acquisitions, net of cash and cash equivalents acquired(80,209)— 
Purchase of premises and equipment, net(3,774)(497)
Proceeds from sales of other repossessed assets89 427 
Net cash used for investing activities(412,790)(120,400)
(Continued)
See accompanying notes to unaudited consolidated financial statements.
5

 
Common
Stock
 
Additional
Paid-in
Capital
 
Retained
Earnings
 
Accumulated
Other
Comprehensive
(Loss) Income
 
Treasury
Stock
 
Unallocated
Common Stock
Held by ESOP
 
Total Brookline
Bancorp, Inc.
Stockholders'
Equity
 
Noncontrolling
Interest in
Subsidiary
 
Total Stockholders'
Equity
 (In Thousands)
Balance at December 31, 2015$757
 $616,899
 $109,675
 $(2,476) $(56,208) $(1,162) $667,485
 $6,001
 $673,486
Net income attributable to Brookline Bancorp, Inc. 
 
 39,083
 
 
 
 39,083
 
 39,083
Net income attributable to noncontrolling interest in subsidiary
 
 
 
 
 
 
 2,203
 2,203
Issuance of noncontrolling interest
 
 
 
 
 
 
 76
 76
Other comprehensive income
 
 

 7,372
 
 
 7,372
 
 7,372
Common stock dividends of $0.27 per share
 
 (19,018) 
 
 
 (19,018) 
 (19,018)
Dividend distribution to owners of noncontrolling interest in subsidiary
 
 
 
 
 
 
 (1,734) (1,734)
Compensation under recognition and retention plans
 (1,023) 
 
 2,057
 
 1,034
 
 1,034
Common stock held by ESOP committed to be released (27,279 shares)
 266
 
 
 
 149
 415
 
 415
Balance at September 30, 2016$757
 $616,142
 $129,740
 $4,896
 $(54,151) $(1,013) $696,371
 $6,546
 $702,917
Three Months Ended March 31,
20232022
(In Thousands)
Cash flows from financing activities:
(Decrease) increase in demand checking, NOW, savings and money market accounts(383,919)114,131 
Increase (decrease) in certificates of deposit750,542 (69,659)
Proceeds from FHLB advances4,266,000 230,000 
Repayment of FHLB advances(4,098,408)(176,671)
Decrease in other borrowed funds, net(23,220)(17,790)
Increase (decrease) in mortgagors' escrow accounts, net(837)(516)
Payment of dividends on common stock(11,970)(9,705)
Net cash provided from financing activities498,188 69,790 
Net increase (decrease) in cash and cash equivalents103,361 (34,466)
Cash and cash equivalents at beginning of period382,959 327,737 
Cash and cash equivalents at end of period$486,320 $293,271 
Supplemental disclosure of cash flow information:
Cash paid during the period for:
Interest on deposits, borrowed funds and subordinated debt$43,785 $6,331 
Income taxes2,511 2,221 
Non-cash investing activities:
Transfer from loans to other repossessed assets$251 $691 
Acquisition of PCSB Financial Corporation:
Fair value of assets acquired, net of cash and cash equivalents acquired$1,931,528 $— 
Fair value of liabilities assumed1,676,110 — 
Common stock issued118 






See accompanying notes to unaudited consolidated financial statements.
6
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Unaudited Consolidated Statements of Cash Flows
 Nine Months Ended September 30,
 2017 2016
 (In Thousands)
Cash flows from operating activities:   
Net income attributable to Brookline Bancorp, Inc.$43,691
 $39,083
Adjustments to reconcile net income to net cash provided from operating activities:   
Net income attributable to noncontrolling interest in subsidiary2,122
 2,203
Provision for credit losses17,186
 7,138
Origination of loans and leases held-for-sale(20,231) (35,568)
Proceeds from sales of loans and leases held-for-sale, net23,852
 37,516
Deferred income tax benefit(3,923) (191)
Depreciation of premises and equipment5,446
 5,320
Amortization of investment securities premiums and discounts, net1,320
 1,787
Amortization of deferred loan and lease origination costs, net4,909
 4,438
Amortization of identified intangible assets1,570
 1,879
Amortization of debt issuance costs75
 56
Accretion of acquisition fair value adjustments, net(1,467) (3,105)
Gain on sales of investment securities, net(11,393) 
Gain on sales of loans and leases held-for-sale(1,709) (1,986)
Gain on sales of OREO and other repossessed assets, net(79) (84)
Write-down of OREO and other repossessed assets430
 51
Compensation under recognition and retention plans1,720
 1,250
ESOP shares committed to be released367
 415
Net change in:   
Cash surrender value of bank-owned life insurance(780) (782)
Other assets(6,117) (20,493)
Accrued expenses and other liabilities1,301
 8,661
Net cash provided from operating activities58,290
 47,588
    
Cash flows from investing activities:   
Proceeds from maturities, calls, and principal repayments of investment securities available-for-sale54,966
 76,207
Purchases of investment securities available-for-sale(52,448) (77,275)
Proceeds from maturities, calls, and principal repayments of investment securities held to maturity3,154
 41,381
Purchases of investment securities held-to-maturity(23,884) (25,045)
Proceeds from redemption/sales of restricted equity securities18,111
 2,817
Purchase of restricted equity securities(4,342) (2,383)
Proceeds from sales of loans and leases held-for-investment, net25,445
 23,116
Net increase in loans and leases(273,700) (377,638)
Purchase of premises and equipment, net(10,604) (2,747)
Proceeds from sales of OREO and other repossessed assets2,873
 2,647
Net cash used for investing activities(260,429) (338,920)
    
   (Continued)


BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Unaudited Consolidated Statements of Cash Flows (Continued)
 Nine Months Ended September 30,
 2017 2016
 (In Thousands)
Cash flows from financing activities:   
Increase in demand checking, NOW, savings and money market accounts68,300
 240,714
Increase in certificates of deposit126,307
 18,247
Proceeds from FHLBB advances3,158,111
 5,137,549
Repayment of FHLBB advances(3,195,278) (5,096,506)
(Decrease) increase in other borrowed funds, net(20,120) 412
Increase in mortgagors' escrow accounts, net506
 650
Proceeds from issuance of common stock82,003
 
Payment of dividends on common stock(20,137) (19,018)
Payment of income taxes for shares withheld in share based activity(294) 
Proceeds from issuance of noncontrolling units118
 76
Payment of dividends to owners of noncontrolling interest in subsidiary(1,671) (1,734)
Net cash provided from financing activities197,845
 280,390
Net decrease in cash and cash equivalents(4,294) (10,942)
Cash and cash equivalents at beginning of period67,657
 75,489
Cash and cash equivalents at end of period$63,363
 $64,547
    
Supplemental disclosure of cash flow information:   
Cash paid during the period for:   
Interest on deposits, borrowed funds and subordinated debt$31,411
 $30,005
Income taxes26,141
 22,949
Non-cash investing activities:   
Transfer from loans and leases held-for-sale to loans and leases$7,500
 $8,284
Transfer from loans to other real estate owned6,223
 2,423



Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES

Notes to Unaudited Consolidated Financial Statements
At and for the Nine Months Ended September 30, 2017 and 2016
(1) Basis of Presentation
Overview
Brookline Bancorp, Inc. (the "Company") is a bank holding company (within the meaning of the Bank Holding Company Act of 1956, as amended) and the parent of Brookline Bank, a Massachusetts-chartered savings bank;trust company; Bank Rhode Island ("BankRI"), a Rhode Island-chartered financial institution; and First IpswichPCSB Bank, ("First Ipswich"), a Massachusetts-chartered trust companyNew York-chartered commercial bank (collectively referred to as the "Banks"). The Banks are all members of the Federal Reserve System. The Company is also the parent of Brookline Securities Corp. ("BSC") and Clarendon Private, LLC ("Clarendon Private"). The Company's primary business is to provide commercial, business and retail banking services to its corporate, municipal and retail customers through the Banks and its non-bank subsidiaries.
Brookline Bank, which includes its wholly-owned subsidiaries, BBS Investment Corp., Longwood Securities Corp. and its 84.2%-owned subsidiary,("LSC"), Eastern Funding LLC ("Eastern Funding"), and First Ipswich Insurance Agency, operates 2529 full-service banking offices in the greater Boston metropolitan area.area with two additional lending offices. BankRI, which includes its wholly-owned subsidiaries, Acorn Insurance Agency, BRI Realty Corp., Macrolease Corporation ("Macrolease"), BRI Investment Corp. and its wholly-owned subsidiary, BRI MSC Corp., operates 20 full-service banking offices in the greater Providence, Rhode Island area. First Ipswich,Macrolease Corporation, previously a subsidiary of BankRI, was merged into Eastern Funding LLC in the second quarter of 2022. PCSB Bank, which includes its wholly-owned subsidiaries, First Ipswich Insurance Agency and First Ipswich Securities IIsubsidiary, UpCounty Realty Corp., operates six15 full-service banking offices onin the north shoreLower Hudson Valley of eastern Massachusetts.New York. Clarendon Private is a registered investment advisor with the Securities and Exchange Commission ("SEC"). Through Clarendon Private, the Company offers a wide range of wealth management services to individuals, families, endowments and foundations to help these clients meet their long-term financial goals.
The Company'sBanks' activities include acceptance of commercial, municipal and retail deposits, origination of mortgage loans on commercial and residential real estate located principally in MassachusettsCentral New England and Rhode Island,the Lower Hudson Valley of New York State, origination of commercial loans and leases to small- and mid-sized businesses, investment in debt and equity securities, and the offering of cash management and investment advisory services. The Company also provides specialty equipment financing through its subsidiariesit subsidiary Eastern Funding, which is basedoperates in New York City, New York, and Macrolease, which is based in Plainview, New York.
The Company and the Banks are supervised, examined and regulated by the Board of Governors of the Federal Reserve System ("FRB"(the "FRB"). As a Massachusetts-chartered savings bank and trust companies,company, Brookline Bank and First Ipswich, respectively, areis also subject to regulation under the laws of the Commonwealth of Massachusetts and the jurisdiction of the Massachusetts Division of Banks.Banks (the "MDOB"). As a Rhode Island-chartered financial institution, BankRI is subject to regulation under the laws of the State of Rhode Island and the jurisdiction of the Banking Division of the Rhode Island Department of Business Regulation.Regulation (the "RIBD"). As a New York- chartered commercial bank, PCSB Bank is subject to regulation and supervision by the New York State Department of Financial Services ("NYDFS").
The Federal Deposit Insurance Corporation ("FDIC") offers insurance coverage on all deposits up to $250,000 per depositor at each of the Banks. As FDIC-insured depository institutions, the Banks are also secondarily subject to supervision, examination and regulation by the FDIC. Additionally, asAs previously disclosed, on July 31, 2019, Brookline Bank converted to a Massachusetts-chartered savings bank, Brookline Bank is also insured bytrust company and ended its membership in the Depositors Insurance Fund ("DIF"(the “DIF”), a private industry-sponsored fund which insures Massachusetts-chartered bank deposit balances in excess of federal deposit insurance company. Thecoverage. Brookline Bank’s growth in deposit size necessitated its withdrawal from the DIF insures savings bankand the concurrent charter conversion. Term deposits in excess of the FDIC insurance limits. As such, Brookline Bank offers 100% insurance on all depositscoverage as a result of a combination of insurance fromJuly 31, 2019 will continue to be insured by the FDIC andDIF until they reach maturity. Clarendon Private is also subject to regulation by the DIF. Brookline Bank is required to file reports with the DIF.SEC.
Basis of Financial Statement Presentation
The unaudited consolidated financial statements of the Company presented herein have been prepared pursuant to the rules of the Securities and Exchange Commission (“SEC”)SEC for quarterly reports on Form 10-Q and do not include all of the information and note disclosures required by U.S. generally accepted accounting principles (“GAAP”). In the opinion of Management,management, all adjustments (consisting of normal recurring adjustments) and disclosures considered necessary for the fair presentation of the accompanying consolidated financial statements have been included. Interim results are not necessarily reflective of the results of the entire year. The accompanying unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Annual Report on Form 10-K for the fiscal year ended December 31, 2016.2022. 

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
The unaudited consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany transactions and balances are eliminated in consolidation.


8

BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

In preparing these consolidated financial statements, Managementmanagement is required to make significant estimates and assumptions that affect the reported amounts of assets, liabilities, income, expenses and disclosure of contingent assets and liabilities. Actual results could differ from those estimates based upon changing conditions, including economic conditions and future events. Material estimates that are particularly susceptible to significant changechanges in the near-term include the determination of the allowance for loan and leasecredit losses, the determination of fair market values of acquired assets and liabilities, including acquired loans, and leases, the review of goodwill and intangiblesintangible assets for impairment and the review of deferred tax assets for valuation allowances.
The judgments used by Managementmanagement in applying these critical accounting policies may be affected by a further and prolonged deterioration in the economic environment, which may result in changes to future financial results. For example, subsequent evaluations of the loan and lease portfolio, in light of the factors then prevailing, may result in significant changes in the allowance for loan and lease losses in future periods, and the inability to collect outstanding principal may result in increased loan and lease losses.

Reclassification

Certain previously reported amounts have been reclassified to conform to the current year's presentation.

Recent Accounting Pronouncements
In May 2017,March 2020, the FASB issued ASU 2017-09, Compensation-Stock Compensation2020-04, "Reference Rate Reform (Topic 718): Scope848)-Facilitation of Modification Accounting.the Effects of Reference Rate Reform on Financial Reporting" ("ASU 2020-04") to provide optional expedients and exceptions for applying GAAP to certain contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments in this update apply only to contracts, hedging relationships, and other transactions that reference the London Interbank Offered Rate ("LIBOR") or another reference rate expected to be discontinued because of reference rate reform. The expedients and exceptions provided by the amendments do not apply to contract modifications made and hedging relationships existing as of December 31, 2022, for which an entity has elected certain optional expedients provided that those elections are retained through the end of the hedging relationship. The amendments in this update are effective for all entities as of March 12, 2020 through December 31, 2022 and do not apply to contract modifications made after December 31, 2022.
In January 2021, FASB issued this UpdateASU 2021-01, "Reference Rate Reform (Topic 848)" an update to address concerns around structural risk of interbank offered rates ("IBORs"), particularly, the diversityrisk of cessation of the LIBOR. The amendments in practice as well as the costthis update clarify that certain optional expedients and complexity when applying the guidanceexceptions in Topic 718, Compensation - Stock Compensation,848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. In December 2022, FASB issued ASU 2022-06, "Reference Rate Reform (Topic 848)" which deferred the sunset date of Topic 848 to December 31, 2024, to allow for a change totransition period after the terms or conditionssunset of a share-based payment award. For public entities, this ASU is effective for annual reporting periods beginning after December 15, 2017. Management has evaluated this ASU and has determined that ASU 2017-09 does apply. As of September 30, 2017, theLIBOR. The Company has adopted the amendments in these updates and established a LIBOR transition committee to guide the Company’s transition from LIBOR. The Company has completed much of the work to transition off the LIBOR index consistent with industry timelines. The working group has identified its products that utilize LIBOR and has implemented fallback language to facilitate the transition to alternative rates. The Company has also evaluated its infrastructure and identified fallback rates as well as started offering alternative indices and new products tied to these alternative indices. The Company does not anticipate the adoption of these standards to have a material impact to the consolidated financial statements.
In March 2022, the FASB issued ASU 2022-02, "Financial Instruments - Credit Losses (Topic 326), Troubled Debt Restructurings and Vintage Disclosures" which addresses concerns regarding the complex accounting for loans modified as troubled debt restructurings (“TDRs”) and also the disclosure of gross writeoff information included in required vintage disclosures. The Company adopted ASU 2022-02 as of January 1, 2023. The enhanced disclosure requirements provided for by ASU 2022-02 were adopted on a prospective basis. Reporting periods prior to the adoption of ASU 2022-02 are presented in accordance with the applicable GAAP. The adoption did not have a material impact on the Company’s consolidated financial statements.
In March 2017, the FASB issued Accounting Standards Update ASU 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (Topic 715). This ASU was issued primarily to improve the presentation of net periodic pension cost and net periodic postretirement benefit cost. This ASU is effective for annual reporting periods beginning after December 15, 2017. Management believes that this ASU applies and has determined the impact to be immaterial as of September 30, 2017. Management will meet to discuss and will put together a project team to assess steps to adoption prior to implementation of the standard in 2018.
In February 2017, the FASB issued ASU 2017-05, Other Income Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20). This ASU was issued to clarify the scope of Subtopic 610-20, and to add guidance for partial sales of nonfinancial assets. For public entities, this ASU is effective for annual reporting periods beginning after December 15, 2017. Management believes that this ASU applies and has determined the impact to be immaterial as of September 30, 2017.
In January 2017, the FASB issued ASU 2017-04, Intangibles - Goodwill and Other (Topic 350). This ASU was issued to simplify the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test. For public entities, this ASU is effective for the fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted and application should be on a prospective basis. Management has evaluated this ASU and has determined that ASU 2017-04 does apply. As of September 30, 2017, the Company has adopted the ASU and determined the impact to be immaterial.
In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230). This ASU was issued to provide clarification and uniformity on the presentation and classification of certain cash receipts and cash payments in the statement of cash flows under Topic 230. The amendments presented in this ASU are effective for fiscal years beginning after December 15, 2017. As of September 30, 2017, management believes that ASU 2016-15 does apply, and after completing an internal analysis has determined the impact of adoption of this ASU in 2018 to the financial statement presentation to be immaterial.
In June 2016, the FASB issued ASU 2016-13, Financial instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The intent of this ASU is to replace the current GAAP method of calculating credit losses. Current GAAP uses a higher threshold at which likely losses Additional details can be calculated and recorded. The new process will require institutions to accountfound in Note 5, "Allowance for likely losses that originally would not have been part of the calculation. The calculation will

Credit Losses".
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At(2) Acquisitions
PCSB Financial Corporation
On January 1, 2023, the Company completed its previously announced acquisition (the “merger”) of PCSB Financial Corporation (“PCSB”). Pursuant to the merger agreement, each share of PCSB common stock outstanding at the effective time of the merger was converted into the right to receive, at the holder’s election, either $22.00 in cash consideration or 1.3284 shares of Company common stock for each share of PCSB common stock, subject to allocation procedures to ensure that 60% of the outstanding shares of PCSB common stock was converted to Company common stock. PCSB’s bank subsidiary, PCSB Bank, operates as a separate subsidiary of the Company and has 15 banking offices throughout the Lower Hudson Valley of New York State.
The transaction was accounted for as a business combination. Accordingly, the Nine Months Ended September 30, 2017purchase price was allocated to the assets acquired and 2016

incorporate future forecasting in addition to historical and current measures. For public entities that file with the SEC, this ASU is effective for the fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. This ASU must be applied prospectively to debt securities marked as other than temporarily impaired. A retrospective approach will be applied cumulatively to retained earnings. Early adoption is permittedliabilities assumed based on their fair values as of the fiscal years beginning after December 15, 2018. Management has determinedmerger effective date. The determination of fair value required management to make estimates about discount rates, future expected cash flows, market conditions, and other future events that ASU 2016-13 does apply, but has not determinedare highly subjective in nature and are subject to change. Fair value estimates of the impact,assets acquired and liabilities assumed may be adjusted for a period up to one year (the measurement period) from the closing date of the merger if any,new information is obtained about facts and circumstances that existed as of September 30, 2017. In preparation for the adoption in 2019merger effective date that, if known, would have affected the measurement of this ASU, management formed a steering committee which has developed an approach for implementationthe amounts recognized as of that date.
During the three months ended March 31, 2023, the Company incurred merger-related expenses totaling $6.4 million.
The following table summarizes the preliminary purchase price allocation to the estimated fair value of the assets acquired and has selected a third party software service provider.liabilities assumed as of the date of the acquisition:
Net Assets Acquired at Fair Value
(In Thousands)
Purchase price consideration$297,791 
ASSETS
Cash42,373 
Investments366,790 
Loans1,336,737 
Allowance for credit losses on PCD loans(2,344)
Premises and equipment14,631 
Core deposit and other intangibles30,265 
Other assets104,654 
Total assets acquired$1,893,106 
LIABILITIES
Deposits$1,570,563 
Borrowings52,923 
Other liabilities52,624 
Total liabilities assumed$1,676,110 
Net assets acquired216,996 
Goodwill$80,795 
In May 2016,connection with the FASB issued ASU 2016-12, Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients. The intentionmerger, Brookline Bancorp, Inc. recorded $80.8 million of this ASU is to provide additional clarification on specific issues brought forth bygoodwill, which represents the FASB and the International Accounting Standards Board Joint Transition Resource Group for Revenue Recognition in relation to Topic 606 and revenue recognition. This ASU is to have the same effective date as ASU 2015-14 which deferred the effective date of ASU 2014-09 to December 15, 2017. Management has determined that ASU 2016-12 does apply as of September 30, 2017. Management assembled a project team to address the changes pursuant to Topic 606 and the majorityexcess of the work was performed on the contracts and management believes there will be no material impact. The standard will be effective on January 1, 2018.
In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. This ASU was issued as part of the FASB Simplification Initiative which intends to reduce the complexity of GAAP while improving usefulness to users. The ASU was effective for annual periods beginning after December 15, 2016, and interim periods within those annual reporting periods with early adoption available. The Company adopted ASU 2016-09 effective January 1, 2017 and the adoption did not have a material impact on the Company’s consolidated financial statements.
In March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net). This ASU was issued to clarify how to recognize revenue depending on an entities position, in relation to another entity involved, on contracts with customers. The entity can either be a principal party or an agent, and must record revenue accordingly. This ASU is not yet effective. Since this ASU affects ASU 2014-09, and that effective date was deferred, this ASU remains suspended too. Management has determined that this ASU does apply as of September 30, 2017. Management assembled a project team to address the changes pursuant to Topic 606 and the majority of the work was performed on the contracts. The project is substantially complete and Management believes that there is no material impact as a result of the adoption. The standard will be effective on January 1, 2018.
In February 2016, FASB issued ASU 2016-02, Leases. This ASU requires lessees to put most leases on their balance sheet but recognize expenses on their income statements in a manner similar to current accounting. This ASU also eliminates current real estate-specific provisions for all companies. For lessors, this ASU modifies the classification criteria and the accounting for sales-type and direct financing leases. This ASU is effective for fiscal years beginning after December 15, 2018, including interim periods therein. Early adoption is permitted. Management believes that this ASU applies and has not determined the impact, if any, as of September 30, 2017. Management has met to discuss the impact and will assemble a project team to assess steps required for adoption prior to implementation of the standard in 2019.
In January 2016, the FASB issued ASU 2016-01, Financial Instruments. This ASU significantly revises an entity’s accounting related to (1) the classification and measurement of investments in equity securities and (2) the presentation of certain fair value changes for financial liabilities measured at fair value. It also amends certain disclosure requirements associated withpurchase price over the fair value of financial instruments. This ASU is effective for fiscal years beginning after December 15, 2017, including interim periods therein. Management has determined that this ASU does apply and has not determined the impact, if any, as of September 30, 2017. Management has put together a steering committee which has made progress identifying the additional data requirements necessary to implement the ASU and has determined an approach for implementation which includes the selection of a third party software service provider. A project team will be formed to ensure the availabilitynet assets acquired.
Fair values of the elements needed for exit price disclosure prior to implementationmajor categories of assets acquired and liabilities assumed were determined as follows:
Cash and Cash Equivalents
The fair values of cash and cash equivalents approximate the standard in 2018.
In August 2015,respective carrying amounts because the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date. This ASU was issued to defer the effective date of ASU 2014-09 for all entities by one year. In effect, public business entities, certain not-for-profit entities, and certain employee benefit plans should apply the guidance in ASU 2014-09 to annual reporting periods (including interim reporting periods within those period) beginning after December 15, 2017. Management has determined that this ASU does apply as of September 30, 2017. A significant amount of the Company's revenuesinstruments are derived from interest incomepayable on financial assets, which are excluded from the scope of the amended guidance.

demand or have short-term maturities.
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At andInvestments
The fair values for investment securities available-for-sale were based on quoted market prices, where available. If quoted market prices were not available, fair value estimates are based on observable inputs, including quoted market prices for similar instruments. Investment securities held-to-maturity were reclassified to investment securities available-for-sale based on the Nine Months Ended September 30, 2017 and 2016
Company's intent at closing.

Management assembled a project team to addressDuring the changes pursuant to Topic 606 and the project team has completed the scope assessment and contract review for in-scope revenue streams. To date,quarter, the Company has not identified any significant changes inrestructured the timing of revenue recognition when considering the amended accounting guidance; however, the Company's implementation efforts are ongoing and such assessments may change prior to the implementation date of January 1, 2018.
(2) Acquisitions
First Commons Bank, N.A.
On September 20, 2017, the Company and First Commons Bank, N.A. (“First Commons Bank”) entered into a definitive agreement and plan of merger (the “Merger Agreement”) pursuant to which First Commons Bank will merge with and into Brookline Bank.investment portfolio acquired from PCSB. The Company expectssold approximately 75% of the portfolio which equates to consummate$223 million of book value predominantly longer dated Agency MBS, Agency CMOs, Corporate and Municipal securities. The average duration of these securities was 6.2 years with an average risk weighting of assets of 31%. The Company recognized a $1.7 million gain from selling these securities.
Proceeds from the transaction duringsale and additional cash on hand was used to purchase $274.4 million of short duration securities, the first quartermajority of 2018, subject to approval by First Commons Bank shareholders,which are US Treasuries, Agency MBS, and a small position of short term Municipal Bond Anticipation Notes. Additional details can be found in Note 3, "Investment Securities".
The average duration of these securities is 2.2 years with an average risk weighting of assets of 4%.
Loans
The fair value of the receipt of all required regulatory approvals,loan portfolio was calculated on an individual loan basis using discounted cash flow analysis, with results presented and assumptions applied on a summary basis. This analysis took into consideration the satisfaction of customary closing conditions.
Under thecontractual terms of the Merger Agreement,loans and assumptions related to the Company will pay $16.70 per sharecost of debt, cost of equity, servicing cost and other liquidity/risk premium considerations to estimate the projected cash flows. The loss rates for the outstanding sharesloans were estimated using Probability of Default (cumulative) and warrants and $2.9 millionLoss Given Default assumptions. The assumptions used in cash fordetermining the outstanding options of First Commons Bank representing a total transactionfair value of approximately $56.0 million. First Commons Bank stockholders will receive 1.171 shares of the Company's common stock for each First Commons Bank share they own, subject to adjustment based on Company's ten-day, volume-weighted average stock price between $13.19 and $15.33. The Company has the option to pay up to 50% of the consideration for the outstanding shares in cash.
First Commons Bank isloan portfolio were considered reasonable from a national banking association which was organized in 2009 and is headquartered in Newton Centre, a village of Newton, Massachusetts. First Commons Bank operates its business from two banking offices located in Massachusetts. First Commons Bank is engaged principally in the business of attracting deposits from the general public and investing those deposits in residential and commercial real estate loans, and in consumer and small business loans.
At September 30, 2017, First Commons Bank had total consolidated assets of approximately $311.4 million, loans of approximately $259.7 million, deposits of approximately $267.5 million and stockholders’ equity of approximately $35.6 million.market-participant viewpoint.
The Company recorded $205.0a $49.8 million discount from the results of the loan accounting valuation.
Deposits - Core Deposit Intangible ("CDI")
Accounts included in the CDI include demand deposits, NOW accounts, money market accounts and savings accounts. The fair value of the CDI was derived from using a financial institution-specific income approach. Factors examined in the valuation of the CDI intangible include customer attrition, deposit interest rates, service charge income, overhead expense, and costs of alternative funding.
The Company recorded a $30.3 million CDI from the results of the deposit valuation. There was $1.9 million of amortization recorded during the three months ended March 31, 2023. The CDI is being amortized at an accelerated rate over 7 years using the sum-of-the-years method.
Certificates of Deposits
The certificates of deposits were recorded at fair value. The determination of the fair value was calculated using discounted cash flow analysis, which involved present valuing the contractual payments over the remaining life of the certificate of deposit at market based-rates.
The Company recorded a $3.2 million discount from the results of the certificate of deposit valuation. There was $186 thousand of merger and acquisition expense in connection with the proposed acquisition of First Commons Bank foraccretion recorded during the three and nine months ended SeptemberMarch 31, 2023.
Borrowings
The fair value of the FHLB advances were ascertained by using discounted cash flow analysis of the contractual payments over the remaining life of the advances at market-based interest rates. The FHLB advances were disaggregated on an individual advance basis and Management used FHLB of New York rates as of December 30, 2017.2022 as the market rate in the present value calculation.

The Company recorded a $0.3 million discount on the assumed FHLB advances.
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
AtPCD Loans and forLeases
Purchased loans and leases that have experienced more-than-insignificant deterioration in credit quality since origination are considered PCD. For PCD loans and leases, the Nine Months Ended September 30, 2017initial estimate of expected credit losses was established through an adjustment to the unpaid principal balance and 2016

(3) Investment Securitiesnon-credit discount at acquisition.
The following tables set forth investment securities available-for-sale and held-to-maturity attable reconciles the dates indicated:
 At September 30, 2017
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair Value
 (In Thousands)
Investment securities available-for-sale:       
GSE debentures$139,443
 $481
 $580
 $139,344
GSE CMOs138,137
 34
 2,891
 135,280
GSE MBSs182,913
 590
 1,385
 182,118
SBA commercial loan asset-backed securities77
 
 
 77
Corporate debt obligations58,638
 336
 83
 58,891
U.S. Treasury bonds4,822
 
 11
 4,811
Trust preferred securities1,471
 
 68
 1,403
Marketable equity securities975
 16
 5
 986
Total investment securities available-for-sale$526,476
 $1,457
 $5,023
 $522,910
Investment securities held-to-maturity:       
GSE debentures$38,622
 $11
 $561
 $38,072
GSEs MBSs14,788
 
 145
 14,643
Municipal obligations53,828
 370
 185
 54,013
Foreign government obligations500
 
 8
 492
Total investment securities held-to-maturity$107,738

$381

$899

$107,220

 December 31, 2016
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair Value
 (In Thousands)
Investment securities available-for-sale:       
GSE debentures$98,122
 $188
 $1,290
 $97,020
GSE CMOs161,483
 37
 3,480
 158,040
GSE MBSs214,946
 794
 2,825
 212,915
SBA commercial loan asset-backed securities107
 
 
 107
Corporate debt obligations48,308
 360
 183
 48,485
U.S. Treasury bonds4,801
 
 64
 4,737
Trust preferred securities1,469
 
 111
 1,358
Marketable equity securities966
 15
 9
 972
Total investment securities available-for-sale$530,202
 $1,394
 $7,962
 $523,634
Investment securities held-to-maturity:       
GSE debentures$14,735
 $
 $634
 $14,101
GSEs MBSs17,666
 
 187
 17,479
Municipal obligations54,219
 5
 1,020
 53,204
Foreign government obligations500
 
 13
 487
Total investment securities held-to-maturity$87,120
 $5
 $1,854
 $85,271
As of September 30, 2017,unpaid principal balance to the fair value of allPCD loans and leases:
(In Thousands)
Total Unpaid principal balance$16,824 
Allowance for credit losses at acquisition(2,344)
Non-credit discount(974)
Fair value$13,506 
Supplemental Pro Forma Financial Information
The following table summarizes supplemental pro forma financial information giving effect to the merger as if it had been completed on January 1, 2022:
Three Months Ended March 31,
20232022
(In Thousands)
Net interest income86,049 82,240 
Non-interest income11,236 6,452 
Net income24,806 9,188 
The supplemental pro forma financial information does not necessarily reflect the results of operations that would have occurred had Brookline Bancorp, Inc. merged with PCSB on January 1, 2022. The supplemental pro forma financial information includes the impact of (i) accreting and amortizing the discounts and premiums associated with the estimated fair value adjustments to acquired loans and leases, investment securities, available-for-saledeposits, and borrowings, (ii) the amortization of recognized intangible assets, (iii) accreting and amortizing the discounts and premiums associated with acquired premises and leases, and (iv) the related estimated income tax effects. Costs savings and other business synergies related to the merger are not included in the supplemental pro forma financial information.
In addition, the supplemental pro forma financial information was $522.9adjusted to include the $6.4 million withof merger-related expenses recognized during three months ended March 31, 2023, as summarized in the following table:
(In Thousands)
Compensation and benefits (1)
$1,221 
Technology and equipment (2)
1,828 
Professional and outside services (3)
3,199 
Other expense (4)
162 
Total merger-related expenses$6,410 
______________________________________________________________________
(1) Comprised primarily of severance and employee retention costs.
(2) Comprised primarily of technology contract termination fees.
(3) Comprised primarily of advisory, legal, accounting, and other professional fees.
(4) Comprised primarily of costs of travel and other miscellaneous expenses.

Brookline Bancorp, Inc.’s operating results for the three months ended March 31, 2023 includes the operating results of acquired assets and assumed liabilities of PCSB subsequent to the merger on January 1, 2023. The amount of interest income, non-interest income and net unrealized lossesloss of $3.6$15.1 million, compared to a fair value of $523.6$2.8 million and net unrealized losses($8.2) million, respectively, attributable to the acquisition of $6.6 million asPCSB were included in Brookline Bancorp, Inc.’s Consolidated Statement of DecemberIncome for the three months ended March 31, 2016. As of September 30, 2017, $377.4 million, or 72.2% of the portfolio, had gross unrealized losses of $5.0

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At2023. PCSB’s interest income, non-interest income and fornet loss noted above reflect management’s best estimates, based on information available at the Nine Months Ended September 30, 2017 and 2016
reporting date.

(3) Investment Securities
The following tables set forth investment securities available-for-sale at the dates indicated:
 At March 31, 2023
 Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Estimated
Fair Value
 (In Thousands)
Investment securities available-for-sale:
GSE debentures$198,454 $292 $21,524 $177,222 
GSE CMOs69,766 119 2,201 67,684 
GSE MBSs206,416 84 17,707 188,793 
Municipal obligations23,282 145 115 23,312 
Corporate debt obligations37,661 93 458 37,296 
U.S. Treasury bonds598,023 1,175 26,948 572,250 
Foreign government obligations500 — 25 475 
Total investment securities available-for-sale$1,134,102 $1,908 $68,978 $1,067,032 
 December 31, 2022
 Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Estimated
Fair Value
 (In Thousands)
Investment securities available-for-sale:
GSE debentures$176,751 $— $24,329 $152,422 
GSE CMOs19,977 — 1,757 18,220 
GSE MBSs159,824 19,249 140,576 
Corporate debt obligations14,076 — 312 13,764 
U.S. Treasury bonds362,850 280 31,823 331,307 
Foreign government obligations500 — 23 477 
Total investment securities available-for-sale$733,978 $281 $77,493 $656,766 
As of March 31, 2023, the fair value of all investment securities available-for-sale was $1.1 billion, with net unrealized losses of $67.1 million, compared to $389.0a fair value of $656.8 million and net unrealized losses of $77.2 million as of December 31, 2022. As of March 31, 2023, $763.4 million, or 74.3%72.6% of the portfolio, had gross unrealized losses of $69.0 million, compared to $630.5 million, or 96.0% of the portfolio, with gross unrealized losses of $8.0$77.5 million as of December 31, 2016.2022.
As of September 30, 2017,March 31, 2023, the fair value ofCompany held no securities as held to maturity; all investment securities held-to-maturity was $107.2 million, with net unrealized losses of $0.5 million, compared to a fair value of $85.3 million with net unrealized losses of $1.8 millionwere held as of December 31, 2016. As of September 30, 2017, $61.2 million, or 57.1% of the portfolio, had gross unrealized losses of $0.9 million. There were $82.0 million, or 96.1% of the portfolio, with net unrealized losses $1.9 million as of December 31, 2016.available-for-sale.
Investment Securities as Collateral
As of September 30, 2017March 31, 2023 and December 31, 2016,2022, respectively, $424.1$626.1 million and $429.1$387.9 million of investment securities were pledged as collateral for repurchase agreements; municipal deposits; treasury, tax and loan deposits; swap agreements; FRB borrowings; and FHLBBFederal Home Loan Bank of Boston and New York ("FHLB") borrowings. The Banks did not have anyhad no outstanding FRB borrowings as of September 30, 2017March 31, 2023 and December 31, 2016.

2022.
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
AtAllowance for Credit Losses-Available-for-Sale Securities
For available-for-sale securities in an unrealized loss position, management first assesses whether (i) the Company intends to sell the security, or (ii) it is more likely than not that the Company will be required to sell the security before recovery of its amortized cost basis. If either criterion is met, any previously recognized allowances are charged-off and the security's amortized cost is written down to fair value through income. If neither criterion is met, the security is evaluated to determine whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency and any adverse conditions specifically related to the security, among other factors.
If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security is compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, an allowance for credit loss is recorded, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through the Allowance for Credit Losses ("ACL") is recognized in other comprehensive income. Adjustments to the allowance are reported as a component of credit loss expense. Available-for-sale securities are charged-off against the allowance or, in the absence of any allowance, written down through income when deemed uncollectible or when either of the aforementioned criteria regarding intent or requirement to sell is met. The Company has made the accounting policy election to exclude accrued interest receivable on available-for-sale securities from the estimate of credit losses. Accrued interest receivables associated with debt securities available-for-sale totaled $4.2 million as of March 31, 2023 compared $2.6 million to as of December 31, 2022.
A debt security is placed on nonaccrual status at the time any principal or interest payments become more than 90 days delinquent or if full collection of interest or principal becomes uncertain. Accrued interest for a debt security placed on nonaccrual is reversed against interest income. There were no debt securities on nonaccrual status and therefore there was no accrued interest related to debt securities reversed against interest income for the Nine Months Ended September 30, 2017three months ended March 31, 2023 and 2016
2022.

Assessment for Available for Sale Securities for Impairment
Other-Than-Temporary Impairment ("OTTI")
Investment securities as of September 30, 2017March 31, 2023 and December 31, 20162022 that have been in a continuous unrealized loss position for less than twelve months or twelve months or longer are as follows:
At September 30, 2017 At March 31, 2023
Less than
Twelve Months
 
Twelve Months
or Longer
 Total Less than
Twelve Months
Twelve Months
or Longer
Total
Estimated
Fair Value
 
Unrealized
Losses
 
Estimated
Fair Value
 
Unrealized
Losses
 
Estimated
Fair Value
 
Unrealized
Losses
Estimated
Fair Value
Unrealized
Losses
Estimated
Fair Value
Unrealized
Losses
Estimated
Fair Value
Unrealized
Losses
(In Thousands) (In Thousands)
Investment securities available-for-sale:           Investment securities available-for-sale:      
GSE debentures$81,964
 $492
 $3,008
 $88
 $84,972
 $580
GSE debentures$12,467 $234 $124,811 $21,290 $137,278 $21,524 
GSE CMOs85,854
 1,338
 48,779
 1,553
 134,633
 2,891
GSE CMOs37,917 691 17,515 1,510 55,432 2,201 
GSE MBSs132,593
 1,129
 5,656
 256
 138,249
 1,385
GSE MBSs30,663 441 131,347 17,266 162,010 17,707 
SBA commercial loan asset-backed securities36
 
 34
 
 70
 
Municipal obligationsMunicipal obligations3,886 115 — — 3,886 115 
Corporate debt obligations10,304
 22
 2,446
 61
 12,750
 83
Corporate debt obligations27,710 429 2,471 29 30,181 458 
U.S. Treasury bonds4,811
 11
 
 
 4,811
 11
U.S. Treasury bonds161,633 762 212,468 26,186 374,101 26,948 
Trust preferred securities
 
 1,403
 68
 1,403
 68
Marketable equity securities506
 5
 
 
 506
 5
Temporarily impaired investment securities available-for-sale316,068
 2,997
 61,326
 2,026
 377,394
 5,023
Investment securities held-to-maturity:           
GSE debentures26,166
 561
 
 
 26,166

561
GSEs MBSs14,436
 145
 
 
 14,436
 145
Municipal obligations20,127
 185
 
 
 20,127
 185
Foreign government obligations492
 8
 
 
 492
 8
Foreign government obligations— — 475 25 475 25 
Temporarily impaired investment securities held-to-maturity61,221

899





61,221

899
Total temporarily impaired investment securities$377,289

$3,896

$61,326

$2,026

$438,615

$5,922
Total temporarily impaired investment securities$274,276 $2,672 $489,087 $66,306 $763,363 $68,978 
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

 At December 31, 2022
 Less than
Twelve Months
Twelve Months
or Longer
Total
 Estimated
Fair Value
Unrealized
Losses
Estimated
Fair Value
Unrealized
Losses
Estimated
Fair Value
Unrealized
Losses
 (In Thousands)
Investment securities available-for-sale:      
GSE debentures$56,719 $1,255 $95,703 $23,076 $152,422 $24,331 
GSE CMOs16,411 1,563 1,809 192 18,220 1,755 
GSE MBSs97,858 9,823 42,500 9,426 140,358 19,249 
Corporate debt obligations13,764 312 — — 13,764 312 
U.S. Treasury bonds139,103 3,723 166,150 28,100 305,253 31,823 
Foreign government obligations477 23 — — 477 23 
Temporarily impaired investment securities available-for-sale324,332 16,699 306,162 60,794 630,494 77,493 
Total temporarily impaired investment securities$324,332 $16,699 $306,162 $60,794 $630,494 $77,493 
 December 31, 2016
 
Less than
Twelve Months
 
Twelve Months
or Longer
 Total
 
Estimated
Fair Value
 
Unrealized
Losses
 
Estimated
Fair Value
 
Unrealized
Losses
 
Estimated
Fair Value
 
Unrealized
Losses
 (In Thousands)
Investment securities available-for-sale:           
GSE debentures$67,216
 $1,290
 $
 $
 $67,216
 $1,290
GSE CMOs118,450
 2,162
 38,852
 1,318
 157,302
 3,480
GSE MBSs149,687
 2,822
 198
 3
 149,885
 2,825
SBA commercial loan asset-backed securities
 
 72
 
 72
 
Corporate debt obligations7,953
 183
 
 
 7,953
 183
U.S. Treasury bonds4,737
 64
 
 
 4,737
 64
Trust preferred securities
 
 1,358
 111
 1,358
 111
Marketable equity securities503
 9
 
 
 503
 9
Temporarily impaired investment securities available-for-sale348,546
 6,530
 40,480
 1,432
 389,026
 7,962
Investment securities held-to-maturity:           
GSE debentures14,101
 634
 
 
 14,101
 634
GSEs MBSs17,289
 187
 
 
 17,289
 187
Municipal obligations50,098
 1,020
 
 
 50,098
 1,020
Foreign government obligations487
 13
 
 
 487
 13
Temporarily impaired investment securities held-to-maturity81,975
 1,854
 
 
 81,975
 1,854
Total temporarily impaired investment securities$430,521
 $8,384
 $40,480
 $1,432
 $471,001
 $9,816

The Company performs regular analysis onanalyses of the investment securities available-for-sale portfolio to determine whether a decline in fair value indicates that an investment security is OTTI.impaired. In making these OTTIimpairment determinations, management considers, among other factors, the length of time and extent to which the fair value has been less than amortized cost; projected future cash flows; credit subordination and the creditworthiness; capital adequacy and near-term prospects of the issuers.
Management also considers the Company's capital adequacy, interest-rate risk, liquidity and business plans in assessing whether it is more likely than not that the Company will sell or be required to sell the investment securities before recovery. If the Company determines that a decline in fair valuesecurity investment is OTTIimpaired and that it is more likely than not that the Company will not sell or be required to sell the investment security before recovery of its amortized cost, the credit portion of the impairment loss is recognized in the Company's unaudited consolidated statement of income and the noncredit portion is recognized in accumulated other comprehensive income. The credit portion of the OTTI impairment represents the difference between the amortized cost and the present value of the expected future cash flows of the investment security. If the Company determines that a decline in fair valuesecurity is OTTIimpaired and it is more likely than not that it will sell or be required to sell the investment security before recovery of its amortized cost, the entire difference between the amortized cost and the fair value of the security will be recognized in the Company's unaudited consolidated statement of income.
Investment Securities Available-For-Sale Impairment Analysis
The following discussion summarizes, by investment security type, the basis for evaluating if the applicable investment securities within the Company’s available-for-sale portfolio were OTTIimpaired as of September 30, 2017. Based on the analysis below and the determination that,March 31, 2023. The Company has determined it is more likely than not that the Company will not sell or be required to sell the investment securities before recovery of its amortized cost. The Company's ability and intent to hold these investment securities until recovery is supported by the Company's strong capital and liquidity positions as well as its historically low portfolio turnover. As such, management has determined that the investment securities are not OTTIimpaired as of September 30, 2017.March 31, 2023. If market

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

conditions for investment securities worsen or the creditworthiness of the underlying issuers deteriorates, it is possible that the Company may recognize additional OTTIimpairment in future periods.
U.S. Government-Sponsored Enterprises
The Company invests in securities issued by U.S. Government-sponsored enterprises ("GSEs"), including GSE debentures, mortgage-backed securities ("MBSs"), and collateralized mortgage obligations ("CMOs"). GSE securities include obligations issued by the Federal National Mortgage Association ("FNMA"), the Federal Home Loan Mortgage Corporation ("FHLMC"), the Government National Mortgage Association ("GNMA"), the Federal Home Loan Banks ("FHLB")FHLB and the Federal Farm Credit Bank. As of September 30, 2017, onlyMarch 31, 2023, the Company held GNMA MBSs and CMOs, and Small Business Administration ("SBA") commercial loan asset-backed securities in ourits available-for-sale portfolio with an estimated fair value of $24.9$35.5 million, all of which were backed explicitly by the full faith and credit of the U.S. Government, compared to $26.2$2.7 million as of December 31, 2016.2022.
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
As of September 30, 2017,March 31, 2023, the Company owned 4451 GSE debentures with a total fair value of $139.3$177.2 million, and a net unrealized loss of $0.1$21.2 million. The acquisition of PCSB accounted for $40.6 million of the total fair value at March 31, 2023. As of December 31, 2016,2022, the Company held 2932 GSE debentures with a total fair value of $97.0$152.4 million, andwith a net unrealized loss of $1.1$24.3 million. As of September 30, 2017, 28March 31, 2023, 26 of the 4451 securities in this portfolio were in an unrealized loss position. As of December 31, 2016, 212022, 31 of the 2932 securities in this portfolio were in an unrealized loss position. All securities are performing and backed by the implicit (FHLB/FNMA/FHLMC) or explicit (GNMA/SBA) guarantee of the U.S Government. During the ninethree months ended September 30, 2017,March 31, 2023 and 2022, the Company purchased a total of $42.1 milliondid not purchase GSE debentures. This compares to $32.3 million purchased during the same period in 2016.
As of September 30, 2017,March 31, 2023, the Company owned 6260 GSE CMOs with a total fair value of $135.3$67.7 million and a net unrealized loss of $2.9$2.1 million. The acquisition of PCSB accounted for $50.2 million of the total fair value at March 31, 2023. As of December 31, 2016,2022, the Company held 6232 GSE CMOs with a total fair value of $158.0$18.2 million with a net unrealized loss of $3.4$1.8 million. As of September 30, 2017, 47March 31, 2023, 51 of the 6260 securities in this portfolio were in an unrealized loss position. As of December 31, 2016, 472022, all of the 62 securities in this portfolio were in an unrealized loss position. All securities are performing and backed by the implicit (FHLB/FNMA/FHLMC) or explicit (GNMA) guarantee of the U.S Government. During the ninethree months ended September 30, 2017,March 31, 2023 and 2022, the Company did not purchase any GSE CMOs, as compared to the same period in 2016, when the Company purchased a total of $3.1 million of GSE CMOs.
As of September 30, 2017,March 31, 2023, the Company owned 191159 GSE MBSs with a total fair value of $182.1$188.8 million and a net unrealized loss of $0.8$17.6 million. The acquisition of PCSB accounted for $51.1 million of the total fair value at March 31, 2023. As of December 31, 2016,2022, the Company held 195134 GSE MBSs with a total fair value of $212.9$140.6 million with a net unrealized loss of $2.0$19.2 million. As of September 30, 2017, 66March 31, 2023, 132 of the 191159 securities in this portfolio were in an unrealized loss position. As of December 31, 2016, 602022, 128 of the 195134 securities in this portfolio were in an unrealized loss position. All securities are performing and backed by the implicit (FHLB/FNMA/FHLMC) or explicit (GNMA) guarantee of the U.S Government. During the ninethree months ended September 30, 2017,March 31, 2023 the Company purchased $39.4 million of GSE MBSs compared to the same period in 2022 when the Company did not purchase any GSE MBSs, as compared to the same periodMBSs.
MunicipalObligations
The Company invests in 2016, when the Company purchased a total of $36.7 million of GSE MBSs.
SBA Commercial Loan Asset-Backed
certain state and municipal securities with high credit ratings for portfolio diversification and tax planning purposes. As of September 30, 2017,March 31, 2023, the Company owned five SBA54 municipal obligation securities with a total fair value of $0.1$23.3 million which approximated amortizedapproximates cost. The acquisition of PCSB accounted for all of the total fair value of March 31, 2023. As of December 31, 2016,2022, the Company owned six SBA securities with a total fair value of $0.1 million, which approximated amortized cost.did not hold any municipal securities. As of September 30, 2017, fourMarch 31, 2023, 7 of the five54 securities in this portfolio were in an unrealized loss position. As of December 31, 2016, four of the six securities in this portfolio were in an unrealized loss position. All securities are performing and backed by the explicit guarantee of the U.S Government. During the ninethree months ended September 30, 2017 and 2016,March 31, 2023, the Company purchased $1.1 million of municipal securities compared to the same period in 2022 when the Company did not purchase any SBAmunicipal securities.
Corporate Obligations
The Company may invest in high-quality corporate obligations to provide portfolio diversification and improve the overall yield on the portfolio. As of September 30, 2017,March 31, 2023, the Company held 1814 corporate obligation securities with a total fair value of $58.9$37.3 million and a net unrealized gainloss of $0.3$0.4 million. The acquisition of PCSB accounted for $23.5 million of the total fair value at March 31, 2023. As of December 31, 2016,2022, the Company held 164 corporate obligation securities with a total fair value of $48.5$13.8 million and a net unrealized gainloss of $0.2$0.3 million. As of September 30, 2017, threeMarch 31, 2023, 12 of the eighteen14 securities in this portfolio were in an unrealized loss position. As of December 31, 2016, three2022, all of the sixteen securities in this portfolio were in an unrealized loss position. Full collection of the obligations is expected because the financial condition of the issuers is sound, they have not defaulted on scheduled payments, the obligations are rated investment grade, and the Company has the ability and intent to hold the obligations for a period of time to recover the amortized cost.

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

During the ninethree months ended September 30, 2017March 31, 2023 and 2016,2022, the Company purchased a total of $10.3 million and $5.1 million ofdid not purchase any corporate obligations, respectively.obligations.
U.S. Treasury Bonds
The Company invests in securities issued by the U.S. government. As of September 30, 2017,March 31, 2023, the Company owned one77 U.S. Treasury bondbonds with a total fair value of $4.8 million and an unrealized loss of $11.0 thousand. This compares to one U.S. Treasury bond with a total fair value of $4.7 million and an unrealized loss of $0.1 million as of December 31, 2016. During the nine months ended September 30, 2017 and 2016, the Company did not purchase any U.S. Treasury bonds.
Trust Preferred Securities
Trust preferred securities represent subordinated debt issued by financial institutions. As of September 30, 2017, the Company owned two trust preferred securities with a total fair value of $1.4 million and an unrealized loss of $0.1 million. This compares to two trust preferred securities with a total fair value of $1.4 million and an unrealized loss of $0.1 million as of December 31, 2016. As of September 30, 2017 and December 31, 2016, both of the securities in this portfolio were in unrealized loss positions. Full collection of the obligations is expected because the financial condition of the issuers is sound, neither of the issuers has defaulted on scheduled payments, the obligations are rated investment grade, and the Company has the ability and intent to hold the obligations for a period of time to recover the amortized cost.
Marketable Equity Securities
From time to time, the Company will invest in mutual funds for community reinvestment purposes. As of September 30, 2017 and December 31, 2016, the Company owned marketable equity securities with a fair value of $1.0 million, which approximated amortized cost. As of September 30, 2017 and December 31, 2016, one of the two securities in this portfolio was in an unrealized loss position. During the nine months ended September 30, 2017 and 2016, the Company did not purchase any marketable equity securities.
Investment Securities Held-to-Maturity Impairment Analysis
The following discussion summarizes by investment security type, the basis for evaluating if the applicable investment securities within the Company's held-to-maturity portfolio were OTTI at September 30, 2017. Management has the ability and the intent to hold the securities until maturity.
U.S. Government-Sponsored Enterprises
As of September 30, 2017, the Company owned 13 GSE debentures with a total fair value of $38.1$572.3 million and a net unrealized loss of $0.6$25.8 million. The acquisition of PCSB accounted for $235.0 million of the total fair value at March 31, 2023. As of December 31, 2016,2022, the Company owned five GSE debenturesheld 41 U.S. Treasury bonds with a total fair value of $14.1$331.3 million and ana net unrealized loss of $0.6$31.5 million. As of September 30, 2017, nineMarch 31, 2023, 49 of the thirteen77 securities in this portfolio were in an unrealized loss position. At December 31, 2016, all five of the securities in this portfolio were in unrealized loss positions. All securities are performing and backed by the implicit (FHLB/FNMA/FHLMC) or explicit (GNMA) guarantee of the U.S Government. During the nine months ended September 30, 2017 and 2016, the Company purchased a total of $23.9 million and $17.7 million in GSE debentures, respectively.
As of September 30, 2017, the Company owned 11 GSE MBSs with a total fair value of $14.6 million and an unrealized loss of $0.1 million. As of December 31, 2016, the Company owned 11 GSE MBSs with a total fair value of $17.5 million and an unrealized loss of $0.2 million. As of September 30, 2017 and December 31, 2016, eight2022, 38 of the eleven41 securities in this portfolio were in an unrealized loss position. All securities are performing and backed by the implicit (FHLB/FNMA/FHLMC) or explicit (GNMA) guarantee of the U.S Government. During the ninethree months ended September 30, 2017,March 31, 2023 the Company did not purchase any GSE MBSs, aspurchased $234.0 million of U.S. Treasury bonds, compared to the same period in 2016,2022 when the Company purchased a total of $2.4$83.6 million of GSE MBSs.
Municipal Obligations
The Company invests in certain state and municipal securities with high credit ratings for portfolio diversification and tax planning purposes. As of September 30, 2017, the Company owned 100 municipal obligation securities with a total fair value of $54.0 million and and a net unrealized gain of $0.2 million. As of December 31, 2016, the Company owned 100 municipal obligation securities with a total fair value of $53.2 million and an unrealized loss of $1.0 million. As of September 30, 2017, 37 of the 100 securities in this portfolio were in an unrealized loss position as compared to December 31, 2016, when 93 of the

U.S. Treasury bonds.
17
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

100 securities were in an unrealized loss position. During the nine months ended September 30, 2017, the Company did not purchase any municipal obligations, as compared to the same period in 2016, when the Company purchased a total of $4.4 million of municipal obligations.
Foreign Government Obligations
The Company holds an investment in foreign government bonds. As of September 30, 2017March 31, 2023 and December 31, 2016,2022, the Company owned one1 foreign government obligation security with a fair value of $0.5 million, which approximated cost. As of September 30, 2017March 31, 2023 and December 31, 20162022, respectively, the security was in an unrealized loss position. During the ninethree months ended September 30, 2017,March 31, 2023, the Company did not purchase any foreign government obligations, as compared to the same period in 2016,2022 when the Company repurchasedpurchased the foreign government obligationobligations after a prior security that matured.
Portfolio Maturities
The final stated maturities of the debt securities are as follows for the periods indicated:
At September 30, 2017 At December 31, 2016 At March 31, 2023At December 31, 2022
Amortized
Cost
 
Estimated
Fair Value
 
Weighted
Average
Rate
 
Amortized
Cost
 
Estimated
Fair Value
 
Weighted
Average
Rate
Amortized
Cost
Estimated
Fair Value
Weighted
Average
Rate
Amortized
Cost
Estimated
Fair Value
Weighted
Average
Rate
(Dollars in Thousands) (Dollars in Thousands)
Investment securities available-for-sale:           Investment securities available-for-sale:      
Within 1 year$13,589
 $13,672
 2.51% $13
 $13
 0.17%Within 1 year$244,307 $243,949 3.96 %$119,912 $119,075 3.10 %
After 1 year through 5 years133,047
 133,571
 2.03% 81,524
 81,833
 2.14%After 1 year through 5 years314,708 308,369 3.23 %163,941 156,120 2.40 %
After 5 years through 10 years128,377
 127,821
 2.03% 128,956
 127,952
 2.03%After 5 years through 10 years323,324 283,588 1.72 %291,284 244,847 1.30 %
Over 10 years250,488
 246,860
 2.01% 318,743
 312,864
 2.03%Over 10 years251,763 231,126 3.40 %158,841 136,724 2.10 %
$525,501
 $521,924
 2.03% $529,236
 $522,662
 2.04%$1,134,102 $1,067,032 3.03 %$733,978 $656,766 2.06 %
Investment securities held-to-maturity:        ��  
Within 1 year$798
 $798
 1.00% $190
 $190
 1.00%
After 1 year through 5 years49,124
 49,214
 1.69% 23,012
 22,750
 1.30%
After 5 years through 10 years43,236
 42,772
 1.82% 46,442
 45,042
 1.75%
Over 10 years14,580
 14,436
 1.93% 17,476
 17,289
 2.11%
$107,738
 $107,220
 1.77% $87,120
 $85,271
 1.70%
Actual maturities of debt securities will differ from those presented above since certain obligations amortize and may also provide the issuer the right to call or prepay the obligation prior to scheduled maturity without penalty. MBSs and CMOs are included above based on their final stated maturities; the actual maturities, however, may occur earlier due to anticipated prepayments and stated amortization of cash flows.
As of September 30, 2017,March 31, 2023, issuers of debt securities with an estimated fair value of $21.5$103.3 million had the right to call or prepay the obligations. Of the $21.5$103.3 million, approximately $15.0$10.3 million matures in less then 1 - 5 years, $6.5year, $37.4 million matures in 6 - 101-5 years, $47.8 million matures in 6-10 years, and none mature$7.8 million matures after ten years. As of December 31, 2016,2022, issuers of debt securities with an estimated fair value of approximately $27.9$53.1 million had the right to call or prepay the obligations. Of the $27.9$53.1 million, $3.0approximately $2.5 million matures in less then 1 year, $6.3 million matures in 1-5 years, $23.5$37.4 million matures in 6-10 years, and $1.4$6.9 million matures after ten years.

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016


Security Sales
On February 3, 2017,The proceeds from the Company, through its wholly owned subsidiary, Brookline Securities Corp. ("Brookline Securities"), received $319.04 in cash and 14.876 sharessale of Community Bank Systems, Inc. (“CBU”) common stock in exchange for each ofinvestment securities available-for-sale were $224.8 million during the 9,721 shares of Northeast Retirement Services, Inc. (“NRS”) stock held by Brookline Securities. The exchange was completed in accordance with the merger agreement entered into between NRS and CBU. As part of the merger agreement, the Company was restricted to selling 5,071 shares of CBU per day in the open market. During the quarterthree months ended March 31, 2017,2023, compared to the three month ended March 31, 2022 where the Company completed the sale of all the CBU shares. Whendid not sell any investment securities are sold, the adjusted cost of the specific security sold is used to compute the gain or loss on the sale. The table below summarizes the activity with respect to the sale of the CBU shares.
 Nine Months Ended September 30, 2017
 (In Thousands)
Sales of marketable and restricted equity securities$11,393
  
Gross gains from sales11,612
Gross losses from sales(219)
Gain on sales of securities, net$11,393
Brooklineavailable-for-sale. Securities held one Class A Common Stock share and 2,070 Class B Common Stock shares of the Savings Bank Life Insurance Company of Massachusetts ("SBLI"). In July 2017, SBLI converted from a Massachusetts stock insurance company to a Massachusetts mutual insurance company and, as a result, Brookline Securities received $500 for one share of Class A Common Stock and $128 per share for its 2,070 shares of Class B Common Stock of SBLI, in exchange for $265.5 thousand in cash. Brookline Securities recognized a nominal gain on the exchange.
There were no security sales executed during the three month periodmonths ended September 30, 2016were related to the acquisition of PCSB Bank and the nine month period ended September 30, 2016.restructuring of the acquired investment portfolio.

 Three Months Ended March 31
 20232022
 (In Thousands)
Investment Securities available-for-sale:
Proceeds from sales:$224,832 $— 
Gross gains from sales2,702 — 
Gross losses from sales(1,001)— 
Gain (loss) on sales of securities, net$1,701 $— 
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

(4) Loans and Leases
The following tables present loantable presents the amortized cost of loans and lease balancesleases and weighted average coupon rates for the originated and acquired loan and lease portfolios at the dates indicated:
 At March 31, 2023At December 31, 2022
 BalanceWeighted
Average
Coupon
BalanceWeighted
Average
Coupon
 (Dollars In Thousands)
Commercial real estate loans:    
Commercial real estate$3,986,676 5.11 %$3,046,746 4.93 %
Multi-family mortgage1,356,546 4.82 %1,150,597 4.74 %
Construction267,192 6.34 %206,805 6.51 %
Total commercial real estate loans5,610,414 5.10 %4,404,148 4.95 %
Commercial loans and leases:    
Commercial (1)
858,963 6.23 %752,948 6.03 %
Equipment financing1,245,742 7.24 %1,216,585 7.04 %
Condominium association42,444 4.76 %46,966 4.80 %
Total commercial loans and leases2,147,149 6.79 %2,016,499 6.61 %
Consumer loans:    
Residential mortgage1,086,754 4.13 %844,614 3.98 %
Home equity345,673 7.54 %322,622 7.00 %
Other consumer56,975 7.07 %56,505 6.65 %
Total consumer loans1,489,402 5.03 %1,223,741 4.90 %
Total loans and leases$9,246,965 5.47 %$7,644,388 5.38 %

(1) Including $503 and $257 of PPP loans as of March 31, 2023 and December 31, 2022, respectively. These loans are fully guaranteed by the SBA and therefore, have not been reserved for in the allowance for credit losses as of March 31, 2023 and December 31, 2022. The increase in PPP loans is due to the acquisition of PCSB Bank.
 At September 30, 2017
 Originated Acquired Total
 Balance 
Weighted
Average
Coupon
 Balance 
Weighted
Average
Coupon
 Balance 
Weighted
Average
Coupon
 (Dollars In Thousands)
Commercial real estate loans:           
Commercial real estate$2,002,369
 4.11% $117,071
 4.33% $2,119,440
 4.12%
Multi-family mortgage718,495
 4.05% 25,417
 4.48% 743,912
 4.06%
Construction165,657
 4.33% 
 —% 165,657
 4.33%
Total commercial real estate loans2,886,521
 4.11% 142,488
 4.36% 3,029,009
 4.12%
Commercial loans and leases:           
Commercial679,984
 4.24% 9,026
 5.51% 689,010
 4.26%
Equipment financing837,702
 7.24% 4,814
 5.91% 842,516
 7.23%
Condominium association53,770
 4.44% 
 —% 53,770
 4.44%
Total commercial loans and leases1,571,456
 5.85% 13,840
 5.65% 1,585,296
 5.85%
Consumer loans:           
Residential mortgage593,922
 3.76% 58,493
 4.22% 652,415
 3.80%
Home equity311,718
 4.05% 45,264
 4.49% 356,982
 4.11%
Other consumer15,627
 5.36% 111
 18.00% 15,738
 5.45%
Total consumer loans921,267
 3.89% 103,868
 4.35% 1,025,135
 3.94%
Total loans and leases$5,379,244
 4.58% $260,196
 4.42% $5,639,440
 4.57%


20

TableAccrued interest on loans and leases, which were excluded from the amortized cost of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
Atloans and forleases totaled $32.2 million and $26.1 million at March 31, 2023 and December 31, 2022, respectively, and were included in other assets in the Nine Months Ended September 30, 2017 and 2016

 At December 31, 2016
 Originated Acquired Total
 Balance 
Weighted
Average
Coupon
 Balance 
Weighted
Average
Coupon
 Balance 
Weighted
Average
Coupon
 (Dollars In Thousands)
Commercial real estate loans:           
Commercial real estate$1,907,254
 3.95% $143,128
 4.24% $2,050,382
 3.97%
Multi-family mortgage701,450
 3.79% 29,736
 4.53% 731,186
 3.82%
Construction136,785
 3.79% 214
 3.67% 136,999
 3.79%
Total commercial real estate loans2,745,489
 3.90% 173,078
 4.29% 2,918,567
 3.92%
Commercial loans and leases:           
Commercial621,285
 4.11% 14,141
 5.44% 635,426
 4.14%
Equipment financing793,702
 7.06% 6,158
 5.86% 799,860
 7.05%
Condominium association60,122
 4.39% 
 % 60,122
 4.39%
Total commercial loans and leases1,475,109
 5.71% 20,299
 5.57% 1,495,408
 5.71%
Consumer loans:           
Residential mortgage555,430
 3.67% 68,919
 3.98% 624,349
 3.70%
Home equity289,361
 3.50% 52,880
 4.26% 342,241
 3.62%
Other consumer18,171
 5.48% 128
 17.92% 18,299
 5.57%
Total consumer loans862,962
 3.65% 121,927
 4.12% 984,889
 3.71%
Total loans and leases$5,083,560
 4.38% $315,304
 4.31% $5,398,864
 4.38%
accompanying consolidated balance sheets.
The net unamortized deferred loan origination fees and costs included in total loans and leases were $15.3$10.5 million and $14.2$11.3 million as of September 30, 2017March 31, 2023 and December 31, 2016,2022, respectively.
The Company's Banks and their subsidiaries lend primarily in eastern Massachusetts, southernall New HampshireEngland states and Rhode Island,New York, with the exception of equipment financing, 28.1%27.1% of which is in the greater New York and New Jersey metropolitan area and 71.9%72.9% of which is in other areas in the United States of America as of September 30, 2017.March 31, 2023.
Accretable Yield for the Acquired Loan Portfolio
The following table summarizes activity in the accretable yield for the acquired loan portfolio for the periods indicated:
 Three Months Ended September 30, Nine Months Ended September 30,
 2017
2016 2017 2016
 (In Thousands)
Balance at beginning of period$13,702
 $18,038
 $14,353
 $20,796
Accretion(2,872) (1,479) (6,604) (3,914)
Reclassification from (to) nonaccretable difference as a result of changes in expected cash flows871
 (377) 3,952
 (700)
Balance at end of period$11,701
 $16,182
 $11,701
 $16,182
On a quarterly basis, subsequent to acquisition, management reforecasts the expected cash flows for acquired ASC 310-30 loans, taking into account prepayment speeds, probability of default and loss given defaults. Management compares cash flow projections per the reforecast to the original cash flow projections and determines whether any reduction in cash flow expectations are due to deterioration, or if the change in cash flow expectation is related to noncredit events. This cash flow analysis is used to evaluate the need for a provision for loan and lease losses and/or prospective yield adjustments. During the three months ended September 30, 2017 and 2016, accretable yield adjustments totaling $0.9 million and $0.4 million, respectively, were made for certain loan pools. During the nine months ended September 30, 2017 and 2016, accretable yield

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

adjustments totaling $4.0 million and $0.7 million, respectively, were made for certain loan pools. These accretable yield adjustments, which are subject to continued re-assessment, will be recognized over the remaining lives of those pools.
Loans and Leases Pledged as Collateral
As of September 30, 2017March 31, 2023 and December 31, 2016,2022, there were $2.0$3.2 billion and $2.1$2.4 billion respectively of loans and leases pledged as collateral for repurchase agreements; municipal deposits; treasury, tax and loan deposits; swap agreements; FRB borrowings; and FHLBBFHLB borrowings. The Banks did not have any outstanding FRB borrowings as of September 30, 2017March 31, 2023 and December 31, 2016.2022.
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
(5) Allowance for Loan and LeaseCredit Losses
The following tables present the changes in the allowance for loan and lease losses and the recorded investment in loans and leases by portfolio segment for the periods indicated:
 Three Months Ended March 31, 2023
 Commercial
Real Estate
CommercialConsumerTotal
 (In Thousands)
Balance at December 31, 2022$68,154 $26,604 $3,724 $98,482 
Charge-offs— (840)(11)(851)
Recoveries383 11 400 
Provision (credit) for loan and lease losses excluding unfunded commitments14,532 6,614 1,688 22,834 
Balance at March 31, 2023$82,692 $32,761 $5,412 $120,865 
 Three Months Ended September 30, 2017
 
Commercial
Real Estate
 Commercial Consumer Total
 (In Thousands)
Balance at June 30, 2017$27,954
 $31,099
 $5,468
 $64,521
Charge-offs(65) (1,965) (113) (2,143)
Recoveries
 109
 80
 189
Provision for loan and lease losses979
 1,832
 35
 2,846
Balance at September 30, 2017$28,868
 $31,075
 $5,470
 $65,413
The table above excludes the establishment of the initial reserve for PCD loans and leases of $2.3 million, net of $2.3 million of day one charge-offs recognized at the date of the acquisition in accordance with GAAP.

 Three Months Ended March 31, 2022
 Commercial
Real Estate
CommercialConsumerTotal
 (In Thousands)
Balance at December 31, 2021$69,213 $27,055 $2,816 $99,084 
Charge-offs(37)(2,301)(6)(2,344)
Recoveries353 38 397 
Provision (credit) for loan and lease losses excluding unfunded commitments(151)(1,604)81 (1,674)
Balance at March 31, 2022$69,031 $23,503 $2,929 $95,463 
The allowance for credit losses for unfunded credit commitments, which is included in other liabilities, was $23.1 million, and $20.6 million at March 31, 2023 and December 31, 2022, respectively.
Provision for Credit Losses
The provision (credit) for credit losses are set forth below for the periods indicated:
 Three Months Ended March 31,
 20232022
 (In Thousands)
Provision (credit) for loan and lease losses:  
Commercial real estate$14,532 $(151)
Commercial6,614 (1,604)
Consumer1,688 81 
Total (credit) provision for loan and lease losses22,834 (1,674)
Unfunded commitments2,510 1,510 
Investment securities available-for-sale198 — 
Total provision (credit) for credit losses$25,542 $(164)

18
 Three Months Ended September 30, 2016
 
Commercial
Real Estate
 Commercial Consumer Total
 (In Thousands)
Balance at June 30, 2016$29,861
 $22,916
 $4,481
 $57,258
Charge-offs(50) (545) (244) (839)
Recoveries
 170
 149
 319
(Credit) provision for loan and lease losses(1,755) 3,923
 (14) 2,154
Balance at September 30, 2016$28,056
 $26,464
 $4,372
 $58,892
 Nine Months Ended September 30, 2017
 
Commercial
Real Estate
 Commercial Consumer Total
 (In Thousands)
Balance at December 31, 2016$27,645
 $20,906
 $5,115
 $53,666
Charge-offs(294) (6,267) (329) (6,890)
Recoveries476
 800
 263
 1,539
Provision for loan and lease losses1,041
 15,636
 421
 17,098
Balance at September 30, 2017$28,868
 $31,075
 $5,470
 $65,413

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Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

 Nine Months Ended September 30, 2016
 
Commercial
Real Estate
 Commercial Consumer Total
 (In Thousands)
Balance at December 31, 2015$30,151
 $22,018
 $4,570
 $56,739
Charge-offs(1,534) (3,250) (1,254) (6,038)
Recoveries
 495
 605
 1,100
(Credit) provision for loan and lease losses(561) 7,201
 451
 7,091
Balance at September 30, 2016$28,056
 $26,464
 $4,372
 $58,892
The liability for unfunded credit commitments, which is included in other liabilities, was $1.5 million at September 30, 2017 and December 31, 2016, respectively. The changes in the liability for unfunded credit commitments reflect changes in the estimate of loss exposure associated with certain unfunded credit commitments. No credit commitments were charged off against the liability account in the nine-month periods ended September 30, 2017 and 2016.
Provision for Credit Losses
The provisions for credit losses are set forth below for the periods indicated:
 Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016
 (In Thousands)
Provision (credit) for loan and lease losses:       
Commercial real estate$979
 $(1,755) $1,041
 $(561)
Commercial1,832
 3,923
 15,636
 7,201
Consumer35
 (14) 421
 451
Total provision for loan and lease losses2,846
 2,154
 17,098
 7,091
Unfunded credit commitments65
 61
 88
 47
Total provision for credit losses$2,911
 $2,215
 $17,186
 $7,138
Allowance for Loan and Lease Losses Methodology
Management has established a methodology to determine the adequacy of the allowance for loan and leasecredit losses that assesses the risks and losses inherent inexpected on the loan and lease portfolio.portfolio and unfunded commitments. Additions to the allowance for loan and leasecredit losses are made by charges to the provision for credit losses. Losses on loans and leases are charged off against the allowance when all or a portion of a loan or lease is considered uncollectible. Subsequent recoveries on loans previously charged off, if any, are credited to the allowance when realized.

Management uses a consistent and systematic process and methodology to evaluate the adequacy ofTo calculate the allowance for loans collectively evaluated, management uses models developed by a third party. Commercial real estate ("CRE"), commercial and industrial ("C&I"), and retail lifetime loss rate models calculate the expected losses over the life of the loan based on exposure at default loan attributes and lease lossesreasonable, supportable economic forecasts. The exposure at default considers the current unpaid balance, prepayment assumptions and expected utilization assumptions. The expected loss estimates for two small commercial portfolios are based on a quarterly basis. For purposes of determining the allowance for loan and lease losses, the Company has segmented certain loans and leaseshistorical loss rates.
Key assumptions used in the models include portfolio segmentation, prepayments, and the expected utilization of unfunded commitments, among others. The portfolios are segmented by productloan level attributes such as loan type, intoloan size, date of origination, and delinquency status to create homogenous loan pools. Pool level metrics are calculated and loss rates are subsequently applied to the following segments: (1) commercial real estatepools as the loans (2) commercial loanshave like characteristics. Prepayment assumptions are embedded within the models and leases, and (3) consumer loans. Portfolio segments are further disaggregated into classes based on the associated riskssame data used for model development and incorporate adjustments for reasonable and supportable forecasts. Model development data and developmental time periods vary by model, but all use at least ten years of historical data and capture at least one recessionary period. Expected utilization is based on current utilization and a loan equivalency ("LEQ") factor. LEQ varies by current utilization and provides a reasonable estimate of expected draws and borrower behavior. Assumptions and model inputs are reviewed in accordance with model monitoring practices and as information becomes available.
The ACL estimate incorporates reasonable and supportable forecasts of various macro-economic variables over the remaining life of loans and leases. The development of the reasonable and supportable forecast assume each macro-economic variable will revert to long-term expectations, with reversion characteristics unique to specific economic indicators and forecasts. Reversion towards long-term expectations generally begins two to three years from the forecast start date and largely completes within the segments. Commercial real estate loans are divided into three classes: commercial real estate loans, multi-family mortgage loans,first five years. Because the reasonable and construction loans. Commercial loans and leases are divided into three classes: commercial loans which include taxi medallion loans, equipment financing, and loans to condominium associations. Consumer loans are divided into three classes: residential mortgage loans, home equity loans, and other consumer loans. A formula-based credit evaluation approach is applied to each group, coupled with an analysis of certain loans for impairment. For each class of loan, management makes significant judgments in selecting the estimation method that fits the credit characteristics of its class and portfolio segment as set forth below.

The general allowance related to loans collectively evaluated for impairment is determined using a formula-based approach utilizing the risk ratings of individual credits and loss factors derived from historic portfolio loss rates, which include estimates of incurred losses over an estimated loss emergence period (“LEP”). The LEP was generated utilizing a charge-off

23

BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

look-back analysis which studied the time from the first indication of elevated risk of repayment (or other early event indicating a problem) to eventual charge-off to support the LEP consideredsupportable economic forecasts used in the allowance calculation. This reserving methodology establishedmodels are mean reverting, the approximate numbermodels are therefore considered to be implicitly mean reverting.

Management elected to use multiple economic forecasts in determining the reserve to account for economic uncertainty. The forecasts include various projections of months of LEP that represents incurred lossesgross domestic product ("GDP"), interest rates, property price indices, and employment measures. Scenario weighting and model parameters are reviewed for each portfolio. In additioncalculation and updated to quantitative measures, relevant qualitative factors include, but are not limited to: (1) levelsreflect facts and trends in past duecircumstances as of the financial statement date. The forecasts utilized at March 31, 2023 reflect the immediate and impaired loans, (2) levels and trends in charge-offs, (3) changes in underwriting standards, policy exceptions, and credit policy, (4) experience of lending management and staff, (5) economic trends, (6) industry conditions, (7)longer-term effects of changes in credit concentrations, (8)a rising interest rate environment and (9) regulatory and other changes. The general allowance relatedinflationary conditions.

As of March 31, 2023, management applied qualitative adjustments to the acquiredCRE lifetime loss rate, C&I lifetime loss rate, and Retail lifetime loss rate models. These adjustments addressed model limitations, were based on historical loss patterns, and targeted specific risks within the certain portfolios. A general qualitative adjustment was applied to all models to account for general economic uncertainty by placing a greater probability on negative economic forecasts. Additional qualitative adjustments were applied to the commercial, multifamily, and commercial real estate (includes owner occupied, non-owner occupied, and construction) portfolios based on the Company’s historical loss experience and the loss experience of the Company’s peer group. High risk segments of the Eastern Funding portfolios also received additional qualitative adjustments based on recent loss history and expected liquidation values. These qualitative adjustments resulted in additions to reserves for all portfolios, as compared to the model output.
Specific reserves are established for loans collectivelyindividually evaluated for impairment when amortized cost basis is determined based upon the degree, if any, of deterioration in the pooled loans subsequent to acquisition. The qualitative factors used in the determination are the same as those used for originated loans.

Specific valuation allowances are established for impaired originated loans with book values greater than the discounted present value of expected future cash flows or, in the case of collateral-dependent impaired loans, for anywhen there is an excess of a loan's book balanceamortized cost basis over the fair value of its underlying collateral. Specific valuation allowancesWhen loans and leases do not share risk characteristics with other financial assets they are established for acquired loans with deterioration in the discounted present value of expected future cash flows since acquisitions or, in the case of collateral dependent impaired loans, for any increase in the excess of a loan's book balance greater than the fair value of its underlying collateral. A specific valuation allowance for losses on troubled debt restructured ("TDR") loans is determined by comparing the net carrying amount of the troubled debt restructured loan with the restructured loan's cash flows discounted at the original effective rate. Impairedevaluated individually. Individually evaluated loans are reviewed quarterly with adjustments made to the calculated reserve as necessary.

The general allowance for loan and lease losses was $110.6 million as of March 31, 2023, compared to $95.4 million as of December 31, 2022. The increase in the general allowance was primarily driven by the acquisition of PCSB Bank during the quarter, which contributed $13.6 million of the $15.2 million increase, and secondarily by loan growth during the quarter.
19

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)

The specific allowance for loan and lease losses was $10.3 million as of March 31, 2023, compared to $3.1 million as of December 31, 2022. The specific allowance increased by $7.1 million during the three months ended March 31, 2023 primarily due to specific reserves on two C&I accounts totaling $6 million.
As of September 30, 2017,March 31, 2023, management believes that the methodology for calculating the allowance is sound and that the allowance provides a reasonable basis for determining and reporting on probableexpected losses inover the lifetime of the Company’s loan portfolios.

As of September 30, 2017, the Company had a portfolio of approximately $27.1 million in loans secured by taxi medallions issued by the cities of Boston and Cambridge. As of December 31, 2016, this portfolio was approximately $31.1 million. Application-based mobile ride services, such as Uber and Lyft, have generated increased competition in the transportation sector, resulting in a reduction in taxi utilization and, as a result, a reduction in the collateral value and credit quality of taxi medallion loans. This has increased the likelihood that loans secured by taxi medallions may default, or that the borrowers may be unable to repay these loans at maturity, potentially resulting in an increase in past due loans, troubled debt restructurings, and charge-offs. The Company’s allowance calculation included a further segmentation of the commercial loans and leases to reflect the increased risk in the Company’s taxi medallion portfolio. This allowance calculation segmentation represents management’s estimations of the current risks associated with the portfolio.

As of September 30, 2017, the Company had an allowance for loan and lease losses associated with taxi medallion loans of $7.2 million of which $5.7 million were specific reserves and $1.5 million was a general reserve. As of December 31, 2016, the Company had an allowance for loan and lease losses associated with taxi medallion loans of $1.3 million of which $0.1 million were specific reserves and $1.2 million was a general reserve. The increase in the allowance for loan and leases associated with taxi medallion loans was primarily driven by the increase in specific reserves due to changes in the underlying collateral value of taxi medallions and the increase in general reserve due to the increase in the historical loss factor applied to the taxi medallion loans. The total troubled debt restructured loans and leases secured by taxi medallions increased by $0.6 million from $6.1 million at December 31, 2016 to $6.7 million at September 30, 2017 due to six taxi medallion relationships which were restructured during the first quarter of 2017. The total loans and leases secured by taxi medallions that were placed on nonaccrual increased to $15.1 million at September 30, 2017 from $13.4 million at December 31, 2016 due to the six restructured taxi medallion relationships mentioned above which were placed on nonaccrual status. In addition, further declines in demand for taxi services or further deterioration in the value of taxi medallions may result in higher delinquencies and losses beyond that provided for in the allowance for loan and lease losses.

The general allowance for loan and lease losses was $57.9 million as of September 30, 2017, compared to $53.5 million as of December 31, 2016. The general allowance for loan and lease losses increased by $4.4 million during the nine months ended September 30, 2017, as a result of the continued growth in the Company's loan portfolios and the increase in historical loss factors applied to taxi medallion and commercial real estate loan portfolios.

The specific allowance for loan and lease losses was $7.5 million as of September 30, 2017, compared to $0.2 million as of December 31, 2016. The specific allowance increased by $7.3 million during the nine months ended September 30, 2017,

24

BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

primarily due to the reduction in collateral values for taxi medallion loans and the increase in specific reserves for one commercial loan.

Credit Quality Assessment
At the time of loan origination, a rating is assigned based on the capacity to pay and general financial strength of the borrower, the value of assets pledged as collateral, and the evaluation of third party support such as a guarantor. The Company continually monitors the credit quality of the loan portfolio using all available information. The officer responsible for handling each loan is required to initiate changes to risk ratings when changes in facts and circumstances occur that warrant an upgrade or downgrade in a loan rating. Based on this information, loans demonstrating certain payment issues or other weaknesses may be categorized as delinquent, impaired,adversely risk-rated, nonperforming and/or put on nonaccrual status. Additionally, in the course of resolving such loans, the Company may choose to restructure the contractual terms of certain loans to match the borrower's ability to repay the loan based on their current financial condition. If a restructured loan meets certain criteria, it may be categorized as a troubled debt restructuring.modified loan.
The Company reviews numerous credit quality indicators when assessing the risk in its loan portfolio. For all loans, the Company utilizes an eight-grade loan rating system, which assigns a risk rating to each borrower based on a number of quantitative and qualitative factors associated with a loan transaction. Factors considered include industry and market conditions; position within the industry; earnings trends; operating cash flow; asset/liability values; debt capacity; guarantor strength; management and controls; financial reporting; collateral; and other considerations. In addition, the Company's independent loan review group evaluates the credit quality and related risk ratings in all loan portfolios. The results of these reviews are reported to the Risk Committee of the Board of Directors on a periodic basis and annually to the Board of Directors. For the consumer loans, the Company heavily relies on payment status for calibrating credit risk.
The ratings categories used for assessing credit risk in the commercial real estate, multi-family mortgage, construction, commercial, equipment financing, condominium association and other consumer loan and lease classes are defined as follows:
1 -4 Rating—Pass
Loan rating grades "1" through "4" are classified as "Pass," which indicates borrowers are performing in accordance with the terms of the loan and are less likely to result in loss due to the capacity of the borrower to pay and the adequacy of the value of assets pledged as collateral.
5 Rating—Other Assets Especially Mentioned ("OAEM")
Borrowers exhibit potential credit weaknesses or downward trends deserving management's attention. If not checked or corrected, these trends will weaken the Company's asset and position. While potentially weak, currently these borrowers are marginally acceptable; no loss of principal or interest is envisioned.
6 Rating—Substandard
Borrowers exhibit well defined weaknesses that jeopardize the orderly liquidation of debt. Substandard loans may be inadequately protected by the current net worth and paying capacity of the obligors or by the collateral pledged, if any. Normal repayment from the borrower is in jeopardy. Although no loss of principal is envisioned, there is a distinct possibility that a partial loss of interest and/or principal will occur if the deficiencies are not corrected. Collateral coverage may be inadequate to cover the principal obligation.
7 Rating—Doubtful
Borrowers exhibit well-defined weaknesses that jeopardize the orderly liquidation of debt with the added provision that the weaknesses make collection of the debt in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Serious problems exist to the point where partial loss of principal is likely.
20

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
8 Rating—Definite Loss
Borrowers deemed incapable of repayment. Loans to such borrowers are considered uncollectible and of such little value that continuation as active assets of the Company is not warranted.
Assets rated as "OAEM," "substandard" or "doubtful" based on criteria established under banking regulations are collectively referred to as "criticized" assets.

Credit Quality Information
The following table presents the amortized cost basis of loans in each class by credit quality indicator and year of origination as of March 31, 2023.
March 31, 2023
20232022202120202019PriorRevolving LoansRevolving Loans Converted to Term LoansTotal
 (In Thousands)
Commercial Real Estate     
Pass$193,343 $645,464 $785,001 $400,924 $478,600 $1,329,857 $70,395 $9,684 $3,913,268 
OAEM— — 2,583 112 14,757 45,077 — — 62,529 
Substandard— — — — — 10,879 — — 10,879 
Total193,343 645,464 787,584 401,036 493,357 1,385,813 70,395 9,684 3,986,676 
Multi-Family Mortgage
Pass(2,261)198,443 237,442 171,113 201,758 502,331 5,065 37,542 1,351,433 
OAEM— — — — 1,340 1,513 — — 2,853 
Substandard— — — — — 2,260 — — 2,260 
Total(2,261)198,443 237,442 171,113 203,098 506,104 5,065 37,542 1,356,546 
Construction
Pass9,140 150,953 67,113 14,436 16,810 3,818 (10,470)— 251,800 
OAEM— 1,430 10,079 — — — — — 11,509 
Substandard— — — — 1,543 2,340 — — 3,883 
Total9,140 152,383 77,192 14,436 18,353 6,158 (10,470)— 267,192 
25
21

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

Credit Quality Information
The following tables present the recorded investment in loans in each class as of September 30, 2017, by credit quality indicator.
March 31, 2023
At September 30, 2017 20232022202120202019PriorRevolving LoansRevolving Loans Converted to Term LoansTotal
Commercial
Real Estate
 
Multi-
Family
Mortgage
 Construction Commercial 
Equipment
Financing
 
Condominium
Association
 
Other
Consumer
Total (In Thousands)
(In Thousands) 
Originated:              
Loan rating:              
CommercialCommercial
Pass$1,990,531
 $717,703
 $164,797
 $644,134
 $826,837
 $53,770
 $15,598
$4,413,370
Pass50,951 162,981 143,615 46,096 28,255 85,094 295,024 2,151 814,167 
OAEM5,177
 
 
 8,638
 748
 
 
14,563
OAEM— — 101 2,812 14,669 — 12,389 — 29,971 
Substandard6,460
 792
 860
 24,128
 5,729
 
 29
37,998
Substandard1,004 — 3,814 788 491 8,210 506 14,822 
Doubtful201
 
 
 3,084
 4,388
 
 
7,673
Doubtful— — — — — — 
Total originated2,002,369
 718,495
 165,657
 679,984
 837,702
 53,770
 15,627
4,473,604
             
Acquired:              
Loan rating:              
TotalTotal51,955 162,981 147,530 49,696 43,415 85,104 315,623 2,659 858,963 
Current-period gross writeoffsCurrent-period gross writeoffs— — — — — — — 
Equipment FinancingEquipment Financing
Pass105,302
 25,120
 
 7,037
 4,800
 
 110
142,369
Pass107,408 431,735 260,488 168,898 126,556 117,050 14,588 1,384 1,228,107 
OAEM9,906
 
 
 269
 
 
 1
10,176
OAEM— 3,501 2,842 973 371 — — 7,696 
Substandard1,761
 297
 
 1,720
 14
 
 
3,792
Substandard— 877 1,957 1,358 2,580 3,153 — — 9,925 
Doubtful102
 
 
 
 
 
 
102
Doubtful— — — — — 14 — — 14 
Total acquired117,071
 25,417
 
 9,026
 4,814
 
 111
156,439
TotalTotal107,408 436,113 265,287 171,229 129,507 120,226 14,588 1,384 1,245,742 
Current-period gross writeoffsCurrent-period gross writeoffs— 120 188 — 96 431 — — 835 
Condominium AssociationCondominium Association
PassPass28 5,353 7,668 8,262 5,463 12,489 2,913 216 42,392 
             
Total loans$2,119,440
 $743,912
 $165,657
 $689,010
 $842,516
 $53,770
 $15,738
$4,630,043
SubstandardSubstandard— — — — — 52 — — 52 
TotalTotal28 5,353 7,668 8,262 5,463 12,541 2,913 216 42,444 
Other ConsumerOther Consumer
PassPass221 459 1,352 14 29 2,104 52,795 56,975 
TotalTotal221 459 1,352 14 29 2,104 52,795 56,975 
Current-period gross writeoffsCurrent-period gross writeoffs— — — — 11 — — — 11 
TotalTotal
PassPass358,830 1,595,388 1,502,679 809,743 857,471 2,052,743 430,310 50,978 7,658,142 
OAEMOAEM— 4,931 15,605 3,897 31,137 46,599 12,389 — 114,558 
SubstandardSubstandard1,004 877 5,771 2,146 4,614 18,693 8,210 506 41,821 
DoubtfulDoubtful— — — — — 15 — 17 
TotalTotal$359,834 $1,601,196 $1,524,055 $815,786 $893,222 $2,118,050 $450,909 $51,486 $7,814,538 
As of September 30, 2017,March 31, 2023, there were no loans categorized as definite loss.

For residential mortgage and home equity loans, the borrowers' credit scores contribute as a reserve metric in the retail loss rate model.




26
22

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

  At September 30, 2017
  Residential Mortgage Home Equity
  (Dollars In Thousands)
Originated:        
Loan-to-value ratio:  
    
  
Less than 50% $151,791
 23.3% $149,477
 41.9%
50% - 69% 256,413
 39.3% 75,490
 21.1%
70% - 79% 160,117
 24.5% 61,081
 17.1%
80% and over 24,318
 3.7% 25,626
 7.2%
Data not available* 1,283
 0.2% 44
 %
Total originated 593,922
 91.0% 311,718
 87.3%
         
Acquired:  
    
  
Loan-to-value ratio:  
    
  
Less than 50% 17,102
 2.6% 27,383
 7.8%
50%—69% 19,734
 3.0% 14,852
 4.1%
70%—79% 12,020
 1.8% 1,372
 0.4%
80% and over 8,552
 1.3% 859
 0.2%
Data not available* 1,085
 0.3% 798
 0.2%
Total acquired 58,493
 9.0% 45,264
 12.7%
         
Total loans $652,415
 100.0% $356,982
 100.0%
         
At March 31, 2023
20232022202120202019PriorRevolving LoansRevolving Loans Converted to Term LoansTotal
 (In Thousands)
Residential  
Credit Scores  
Over 700$11,318 $113,602 $174,499 $94,312 $60,855 $165,408 $4,798 $931 $625,723 
661 - 7002,122 15,247 21,303 17,225 11,314 37,644 — — 104,855 
600 and below682 6,111 3,734 5,226 2,817 16,574 — — 35,144 
Data not available*6,438 75,482 31,422 27,984 27,494 152,212 — — 321,032 
Total$20,560 $210,442 $230,958 $144,747 $102,480 $371,838 $4,798 $931 $1,086,754 
Home Equity
Credit Scores  
Over 700$1,591 $3,808 $1,359 $982 $1,159 $7,466 $242,109 $2,860 $261,334 
661 - 700166 785 90 34 237 1,481 39,862 280 42,935 
600 and below155 88 86 47 91 342 8,062 740 9,611 
Data not available*— 60 288 — — 1,059 25,110 5,276 31,793 
Total$1,912 $4,741 $1,823 $1,063 $1,487 $10,348 $315,143 $9,156 $345,673 

* Represents in process general ledger accountsloans and leases for which data are not available.



27

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

The following tables present the recorded investment in loans in each class as of December 31, 2016,2022, by credit quality indicator.
 At December 31, 2016 
 
Commercial
Real Estate
 
Multi-
Family
Mortgage
 Construction Commercial 
Equipment
Financing
 
Condominium
Association
 
Other
Consumer
Total
 (In Thousands) 
Originated:              
Loan rating:              
Pass$1,899,162
 $700,046
 $136,607
 $583,940
 $786,050
 $60,122
 $12,018
$4,177,945
OAEM1,538
 
 178
 8,675
 824
 
 
11,215
Substandard6,288
 1,404
 
 28,595
 4,848
 
 12
41,147
Doubtful266
 
 
 75
 1,980
 
 
2,321
Total originated1,907,254
 701,450
 136,785
 621,285
 793,702
 60,122
 12,030
4,232,628
               
Acquired:              
Loan rating:              
Pass131,850
 29,153
 214
 10,312
 6,158
 
 128
177,815
OAEM1,408
 270
 
 249
 
 
 
1,927
Substandard9,768
 313
 
 3,017
 
 
 
13,098
Doubtful102
 
 
 563
 
 
 
665
Total acquired143,128
 29,736
 214
 14,141
 6,158
 
 128
193,505
               
Total loans$2,050,382
 $731,186
 $136,999
 $635,426
 $799,860
 $60,122
 $12,158
$4,426,133
As of December 31, 2016, there were no loans categorized as definite loss.




December 31, 2022
20222021202020192018PriorRevolving LoansRevolving Loans Converted to Term LoansTotal
 (In Thousands)
Commercial Real Estate      
Pass$475,105 $622,952 $290,913 $362,339 $210,954 $971,274 $55,464 $9,167 $2,998,168 
OAEM— 2,600 112 14,805 2,841 25,875 — — 46,233 
Substandard— — — — — 2,345 — — 2,345 
Total475,105 625,552 291,025 377,144 213,795 999,494 55,464 9,167 3,046,746 
Multi-Family Mortgage
Pass162,139 226,502 132,893 114,109 142,271 324,415 4,823 36,662 1,143,814 
Substandard— — — — — 6,783 — — 6,783 
Total162,139 226,502 132,893 114,109 142,271 331,198 4,823 36,662 1,150,597 
28
23

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

December 31, 2022
20222021202020192018PriorRevolving LoansRevolving Loans Converted to Term LoansTotal
 (In Thousands)
Construction
Pass82,650 73,995 13,787 16,421 3,306 — 6,456 — 196,615 
OAEM842 8,641 — — — — — — 9,483 
Substandard— — — — — 707 — — 707 
Total83,492 82,636 13,787 16,421 3,306 707 6,456 — 206,805 
Commercial
Pass178,212 116,674 48,713 22,809 29,350 52,866 273,467 1,071 723,162 
OAEM— 109 — 14,821 — — 2,187 — 17,117 
Substandard— 3,835 1,215 494 — 30 6,461 632 12,667 
Doubtful— — — — — — 
Total178,212 120,618 49,928 38,124 29,350 52,897 282,115 1,704 752,948 
Equipment Financing
Pass443,323 282,398 185,007 140,931 76,595 60,980 13,236 1,301 1,203,771 
OAEM1,019 1,453 184 455 13 — — — 3,124 
Substandard608 784 1,514 2,597 2,503 1,669 — — 9,675 
Doubtful— — — — 13 — — 15 
Total444,950 284,635 186,705 143,983 79,113 62,662 13,236 1,301 1,216,585 
Condominium Association
Pass5,821 7,743 8,810 5,858 1,603 12,227 4,823 23 46,908 
Substandard— — — — — 58 — — 58 
Total5,821 7,743 8,810 5,858 1,603 12,285 4,823 23 46,966 
Other Consumer
Pass411 393 15 13 1,503 750 53,418 56,504 
Substandard— — — — — — — 
Total411 393 15 13 1,503 750 53,419 56,505 
Total
Pass1,347,661 1,330,657 680,138 662,480 465,582 1,422,512 411,687 48,225 6,368,942 
OAEM1,861 12,803 296 30,081 2,854 25,875 2,187 — 75,957 
Substandard608 4,619 2,729 3,091 2,503 11,592 6,462 632 32,236 
24
 At December 31, 2016
 Residential Mortgage Home Equity
 (Dollars In Thousands)
Originated:       
Loan-to-value ratio: 
    
  
Less than 50%$138,030
 22.1% $153,679
 44.9%
50%—69%229,799
 36.9% 61,553
 18.1%
70%—79%162,614
 26.0% 49,987
 14.6%
80% and over21,859
 3.5% 23,317
 6.8%
Data not available*3,128
 0.5% 825
 0.2%
Total originated555,430
 89.0% 289,361
 84.6%
        
Acquired: 
    
  
Loan-to-value ratio: 
    
  
Less than 50%17,809
 2.9% 32,334
 9.4%
50%—69%24,027
 3.8% 15,059
 4.4%
70%—79%14,030
 2.2% 3,069
 0.9%
80% and over10,069
 1.6% 1,016
 0.3%
Data not available*2,984
 0.5% 1,402
 0.4%
Total acquired68,919
 11.0% 52,880
 15.4%
        
Total loans$624,349
 100.0% $342,241
 100.0%
        

* Represents in process general ledger accounts for which data are not available.


The following table presents information regarding foreclosed residential real estate property for the periods indicated:
 At September 30, 2017 At December 31, 2016
 (In Thousands)
Foreclosed residential real estate property held by the creditor$
 $251
Recorded investment in mortgage loans collateralized by residential real estate property that are in the process of foreclosure1,508
 1,213








29

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

December 31, 2022
20222021202020192018PriorRevolving LoansRevolving Loans Converted to Term LoansTotal
 (In Thousands)
Doubtful— — — — 14 — 17 
Total$1,350,130 $1,348,079 $683,163 $695,652 $470,941 $1,459,993 $420,336 $48,858 $6,477,152 
As of December 31, 2022, there were no loans categorized as definite loss.
At December 31, 2022
20222021202020192018PriorRevolving LoansRevolving Loans Converted to Term LoansTotal
 (In Thousands)
Residential  
Credit Scores  
Over 700$108,125 $176,341 $95,484 $61,763 $38,949$132,359 $4,942 $348 $618,311 
661 - 70015,018 21,450 17,61111,388 8,30829,999 — — 103,774 
600 and below6,133 3,754 5,2752,833 2,26414,688 — — 34,947 
Data not available*28,097 6,661 7123,316 48,796 — — 87,582 
Total$157,373 $208,206 $119,082 $79,300 $49,521 $225,842 $4,942 $348 $844,614 
Home Equity
Credit Scores
Over 700$3,833 $1,399 $1,128$1,209 $984$6,862 $247,188 $2,304 $264,907 
661 - 700787 92 35249 2721,329 41,050 296 44,110 
600 and below89 87 4893 360 8,744 595 10,016 
Data not available*— — — 1,029 2,279 269 3,589 
Total$4,715 $1,584 $1,211$1,551 $1,256$9,580 $299,261 $3,464 $322,622 
Age Analysis of Past Due Loans and Leases
The following tables presenttable presents an age analysis of the recorded investmentamortized cost basis in total loans and leases as of September 30, 2017 and DecemberMarch 31, 2016.
 At September 30, 2017
 Past Due     
Loans and
Leases Past
Due Greater
Than 90 Days
and Accruing
  
 
31-60
Days
 
61-90
Days
 
Greater
Than
90 Days
 Total Current 
Total Loans
and Leases
  
Nonaccrual
Loans and
Leases
 (In Thousands)
Originated:               
Commercial real estate loans:               
Commercial real estate$726
 $400
 $1,006
 $2,132
 $2,000,237
 $2,002,369
 $
 $2,915
Multi-family mortgage4,019
 919
 
 4,938
 713,557
 718,495
 
 792
Construction3,021
 
 860
 3,881
 161,776
 165,657
 
 860
Total commercial real estate loans7,766
 1,319
 1,866
 10,951
 2,875,570
 2,886,521
 
 4,567
Commercial loans and leases:               
Commercial1,241
 944
 15,118
 17,303
 662,681
 679,984
 
 21,335
Equipment financing1,625
 900
 3,611
 6,136
 831,566
 837,702
 46
 9,858
Condominium association317
 38
 
 355
 53,415
 53,770
 
 
Total commercial loans and leases3,183
 1,882
 18,729
 23,794
 1,547,662
 1,571,456
 46
 31,193
Consumer loans:               
Residential mortgage963
 214
 1,516
 2,693
 591,229
 593,922
 
 1,730
Home equity1,046
 1
 126
 1,173
 310,545
 311,718
 1
 402
Other consumer226
 26
 15
 267
 15,360
 15,627
 
 29
Total consumer loans2,235
 241
 1,657
 4,133
 917,134
 921,267
 1

2,161
Total originated loans and leases$13,184
 $3,442
 $22,252
 $38,878
 $5,340,366
 $5,379,244
 $47
 $37,921
             (Continued) 

2023.
30
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and
 At March 31, 2023
 Past Due  Past
Due Greater
Than 90 Days
and Accruing
 
 31-60
Days
61-90
Days
Greater
Than
90 Days
TotalCurrentTotal Loans
and Leases
Non-accrual
Non-accrual
with No Related Allowance
 (In Thousands)
Commercial real estate loans:
Commercial real estate$2,477 $1,062 $994 $4,533 $3,982,143 $3,986,676 $661 $4,589 $— 
Multi-family mortgage— — — — 1,356,546 1,356,546 — — — 
Construction— — 2,217 2,217 264,975 267,192 — 3,883 3,883 
Total commercial real estate loans2,477 1,062 3,211 6,750 5,603,664 5,610,414 661 8,472 3,883 
Commercial loans and leases:
Commercial192 347 547 858,416 858,963 — 5,495 1,272 
Equipment financing4,611 2,393 4,963 11,967 1,233,775 1,245,742 56 9,908 102 
Condominium association— — — — 42,444 42,444 — 51 — 
Total commercial loans and leases4,803 2,401 5,310 12,514 2,134,635 2,147,149 56 15,454 1,374 
Consumer loans:
Residential mortgage787 577 1,924 3,288 1,083,466 1,086,754 — 3,449 1,246 
Home equity201 150 451 802 344,871 345,673 1,079 296 
Other consumer— — 56,970 56,975 — — 
Total consumer loans988 727 2,380 4,095 1,485,307 1,489,402 4,528 1,542 
Total loans and leases$8,268 $4,190 $10,901 $23,359 $9,223,606 $9,246,965 $726 $28,454 $6,799 
The Company did not recognize any interest income on nonaccrual loans for the Nine Months Ended September 30, 2017 and 2016
three months ended March 31, 2023.














26
 At September 30, 2017
 Past Due     
Loans and
Leases Past
Due Greater
Than 90 Days
and Accruing
  
 
31-60
Days
 
61-90
Days
 
Greater
Than
90 Days
 Total Current 
Total Loans
and Leases
  
Nonaccrual
Loans and
Leases
 (In Thousands)
Acquired:               
Commercial real estate loans:               
Commercial real estate$799
 $147
 $731
 $1,677
 $115,394
 $117,071
 $661
 $136
Multi-family mortgage
 
 3
 3
 25,414
 25,417
 3
 
Total commercial real estate loans799
 147
 734
 1,680
 140,808
 142,488
 664
 136
Commercial loans and leases:               
Commercial5
 21
 1,198
 1,224
 7,802
 9,026
 167
 1,032
Equipment financing
 
 14
 14
 4,800
 4,814
 14
 
Total commercial loans and leases5
 21
 1,212
 1,238
 12,602
 13,840
 181
 1,032
Consumer loans:               
Residential mortgage710
 550
 1,729
 2,989
 55,504
 58,493
 1,489
 239
Home equity557
 74
 269
 900
 44,364
 45,264
 142
 645
Other consumer

 
 
 
 111
 111
 
 
Total consumer loans1,267
 624
 1,998
 3,889
 99,979
 103,868
 1,631
 884
Total acquired loans and leases$2,071
 $792
 $3,944
 $6,807
 $253,389
 $260,196
 $2,476
 $2,052
                
Total loans and leases$15,255
 $4,234
 $26,196
 $45,685
 $5,593,755
 $5,639,440
 $2,523
 $39,973


31

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
AtThe following tables present an age analysis of the recorded investment in originated and for the Nine Months Ended September 30, 2017 and 2016

 At December 31, 2016
 Past Due     
Loans and
Leases Past
Due Greater
Than 90 Days
and Accruing
  
 
31-60
Days
 
61-90
Days
 
Greater
Than
90 Days
 Total Current 
Total Loans
and Leases
  
Nonaccrual
Loans and
Leases
 (In Thousands)
Originated:               
Commercial real estate loans:               
Commercial real estate$1,525
 $2,075
 $429
 $4,029
 $1,903,225
 $1,907,254
 $2
 $5,035
Multi-family mortgage2,296
 
 291
 2,587
 698,863
 701,450
 
 1,404
Construction547
 
 
 547
 136,238
 136,785
 
 
Total commercial real estate loans4,368
 2,075
 720
 7,163
 2,738,326
 2,745,489
 2
 6,439
Commercial loans and leases:               
Commercial5,396
 815
 10,014
 16,225
 605,060
 621,285
 
 20,587
Equipment financing2,983
 1,444
 5,341
 9,768
 783,934
 793,702
 
 6,758
Condominium association266
 
 
 266
 59,856
 60,122
 
 
Total commercial loans and leases8,645
 2,259
 15,355
 26,259
 1,448,850
 1,475,109
 
 27,345
Consumer loans:               
Residential mortgage3,745
 2,294
 163
 6,202
 549,228
 555,430
 
 2,455
Home equity25
 219
 5
 249
 289,112
 289,361
 3
 128
Other consumer549
 87
 16
 652
 17,519
 18,171
 
 149
Total consumer loans4,319
 2,600
 184
 7,103
 855,859
 862,962
 3
 2,732
Total originated loans and leases$17,332
 $6,934
 $16,259
 $40,525
 $5,043,035
 $5,083,560
 $5
 $36,516
             (Continued) 

32

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

 At December 31, 2016
 Past Due     
Loans and
Leases Past
Due Greater
Than 90 Days
and Accruing
  
 
31-60
Days
 
61-90
Days
 
Greater
Than
90 Days
 Total Current 
Total Loans
and Leases
  
Nonaccrual
Loans and
Leases
 (In Thousands)
Acquired:               
Commercial real estate loans:               
Commercial real estate$925
 $
 $4,011
 $4,936
 $138,192
 $143,128
 $3,786
 $305
Multi-family mortgage
 
 
 
 29,736
 29,736
 
 
Construction
 
 
 
 214
 214
 
 
Total commercial real estate loans925
 
 4,011
 4,936
 168,142
 173,078
 3,786
 305
Commercial loans and leases:               
Commercial306
 
 2,651
 2,957
 11,184
 14,141
 264
 2,387
Equipment financing
 
 
 
 6,158
 6,158
 
 
Total commercial loans and leases306
 
 2,651
 2,957
 17,342
 20,299
 264
 2,387
Consumer loans:               
Residential mortgage
 318
 2,865
 3,183
 65,736
 68,919
 2,820
 46
Home equity288
 97
 339
 724
 52,156
 52,880
 202
 823
Other consumer
 1
 
 1
 127
 128
 
 
Total consumer loans288
 416
 3,204
 3,908
 118,019
 121,927
 3,022
 869
Total acquired loans and leases$1,519
 $416
 $9,866
 $11,801
 $303,503
 $315,304
 $7,072
 $3,561
                
Total loans and leases$18,851
 $7,350
 $26,125
 $52,326
 $5,346,538
 $5,398,864
 $7,077
 $40,077

33

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

Commercial Real Estate Loans—As of September 30, 2017, loans outstanding in the three classes within this segment expressed as a percentage of totalacquired loans and leases outstanding were as follows: commercial real estate loans -- 37.6%; multi-family mortgage loans -- 13.2%; and construction loans -- 2.9%.of December 31, 2022.
Loans in this portfolio that are on nonaccrual status and/or risk-rated "substandard" or worse are evaluated on an individual loan basis for impairment. For non-impaired commercial real estate loans, loss factors are applied to outstanding loans by risk rating for each of the three classes in the portfolio. The factors applied are based primarily on historic loan loss experience and an assessment of internal and external factors and other relevant information.
 At December 31, 2022
 Past Due  Loans and
Leases Past
Due Greater
Than 90 Days
and Accruing
 Non-accrual
with No Related Allowance
 31-60
Days
61-90
Days
Greater
Than
90 Days
TotalCurrentTotal Loans
and Leases
Non-accrual
 (In Thousands)
Commercial real estate loans:
Commercial real estate$2,495 $199 $408 $3,102 $3,043,644 $3,046,746 $— $607 $262 
Multi-family mortgage— 180 — 180 1,150,417 1,150,597 — — — 
Construction707 — — 707 206,098 206,805 — 707 707 
Total commercial real estate loans3,202 379 408 3,989 4,400,159 4,404,148 — 1,314 969 
Commercial loans and leases:
Commercial740 — 343 1,083 751,865 752,948 — 464 — 
Equipment financing5,103 1,764 6,205 13,072 1,203,513 1,216,585 28 9,653 399 
Condominium association2,072 — — 2,072 44,894 46,966 — 58 — 
Total commercial loans and leases7,915 1,764 6,548 16,227 2,000,272 2,016,499 28 10,175 399 
Consumer loans:
Residential mortgage677 70 1,466 2,213 842,401 844,614 2,680 1,091 
Home equity443 — 155 598 322,024 322,622 723 — 
Other consumer56,497 56,505 — — 
Total consumer loans1,121 75 1,623 2,819 1,220,922 1,223,741 3,405 1,091 
Total loans and leases$12,238 $2,218 $8,579 $23,035 $7,621,353 $7,644,388 $33 $14,894 $2,459 
Commercial Loans and Leases—As of September 30, 2017, loans and leases outstanding in the three classes within this segment expressed as a percent of total loans and leases outstanding were as follows: commercial loans and leases -- 12.2%; equipment financing loans -- 14.9%; and loans to condominium associations -- 1.0%.
Loans and leases in this portfolio that are on nonaccrual status and/or risk-rated "substandard" or worse are evaluated on an individual basis for impairment. For non-impaired commercial loans and leases, loss factors are applied to outstanding loans by risk rating for each of the three classes in the portfolio.
Consumer Loans—As of September 30, 2017, loans outstanding within the four classes within this segment expressed as a percent of total loans and leases outstanding were as follows: residential mortgage loans -- 11.6%, home equity loans -- 6.3%, and other consumer loans -- 0.3%.
Significant risk characteristics related to the residential mortgage and home equity loan portfolios are the geographic concentration of the properties financed within selected communities in the greater Boston and Providence metropolitan areas. The payment status and loan-to-value ratio are the primary credit quality indicator used for residential mortgage loans and home equity loans. Generally, loans are not made when the loan-to-value ratio exceeds 80% unless private mortgage insurance is obtained and/or there is a financially strong guarantor. Consumer loans that become 90 days or more past due, or are placed on nonaccrual.
Impaired Loans and Leases
A loan is considered to be impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due (both interest and principal) according to the contractual terms of the loan agreement. The loans and leases risk-rated "substandard" or worse are considered impaired. The Company has also defined the population of impaired loans to include nonaccrual loans and troubled debt restructured ("TDR")modified loans.
When Impaired loans and leases which do not share similar risk characteristics with other loans are individually evaluated for credit losses. Specific reserves are established for loans and leases with deterioration in the ultimate collectabilitypresent value of expected future cash flows or, in the total principalcase of an impaired loan or lease iscollateral-dependent loans and leases, any increase in doubt and the loan is on nonaccrual status, all payments are applied to principal, under the cost recovery method. When the ultimate collectability of the total principal of an impaired loan or lease is not in doubt and the loan or lease is on nonaccrual status, contractual interest is credited to interest income when received, underamortized cost basis over the cash basis method.
The following tables includefair value of the recorded investment and unpaid principal balances of impairedunderlying collateral discounted for estimated selling costs. In contrast, the loans and leases with the related allowance amount, if applicable, for the originatedwhich share similar risk characteristics and acquired loan and lease portfolios at the dates indicated. Also presented are the average recorded investmentsnot included in the impaired loans and leases and the related amount of interest recognized during the period that the impaired loans were impaired.

individually evaluated population are collectively evaluated for credit losses.
34
27

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
AtThe following tables present information regarding individually evaluated and collectively evaluated allowance for loan and lease losses for credit losses on loans and leases at the Nine Months Ended September 30, 2017 and 2016
dates indicated.

At March 31, 2023
Commercial Real EstateCommercialConsumerTotal
(In Thousands)
Allowance for Loan and Lease Losses:
Individually evaluated$884 $9,328 $49 $10,261 
Collectively evaluated81,808 23,433 5,363 110,604 
Total$82,692 $32,761 $5,412 $120,865 
Loans and Leases:
Individually evaluated$18,241 $16,736 $4,302 $39,279 
Collectively evaluated5,592,173 2,130,413 1,485,100 9,207,686 
Total$5,610,414 $2,147,149 $1,489,402 $9,246,965 

At December 31, 2022
Commercial Real EstateCommercialConsumerTotal
(In Thousands)
Allowance for Loan and Lease Losses:
Individually evaluated$62 $2,982 $68 $3,112 
Collectively evaluated68,092 23,622 3,656 95,370 
Total loans and leases$68,154 $26,604 $3,724 $98,482 
Loans and Leases:
Individually evaluated$11,039 $14,346 $3,863 $29,248 
Collectively evaluated4,393,109 2,002,153 1,219,878 7,615,140 
Total loans and leases$4,404,148 $2,016,499 $1,223,741 $7,644,388 


28
 At September 30, 2017 At December 31, 2016
 
Recorded
Investment
(1)
 Unpaid
Principal
Balance
 Related
Allowance
 
Recorded
Investment (2)
 Unpaid
Principal
Balance
 Related
Allowance
 (In Thousands)
Originated:           
With no related allowance recorded:           
Commercial real estate$9,620
 $9,612
 $
 $9,113
 $9,104
 $
Commercial24,749
 24,737
 
 39,269
 39,210
 
Consumer3,545
 3,536
 
 4,823
 4,815
 
Total originated with no related allowance recorded37,914
 37,885
 
 53,205
 53,129
 
With an allowance recorded:           
Commercial real estate3,061
 3,061
 1
 3,984
 3,984
 28
Commercial17,993
 17,946
 7,488
 605
 605
 97
Total originated with an allowance recorded21,054
 21,007
 7,489
 4,589
 4,589
 125
Total originated impaired loans and leases58,968
 58,892
 7,489
 57,794
 57,718
 125
            
Acquired:           
With no related allowance recorded:           
Commercial real estate2,112
 2,112
 
 10,400
 10,400
 
Commercial2,042
 2,042
 
 3,948
 3,948
 
Consumer4,807
 4,807
 
 6,384
 6,399
 
Total acquired with no related allowance recorded8,961
 8,961
 
 20,732
 20,747
 
With an allowance recorded:           
Consumer171
 171
 21
 253
 253
 27
 Total acquired with an allowance recorded171
 171
 21
 253
 253
 27
Total acquired impaired loans and leases9,132
 9,132
 21
 20,985
 21,000
 27
            
Total impaired loans and leases$68,100
 $68,024
 $7,510
 $78,779
 $78,718
 $152

(1) Includes originated and acquired nonaccrual loans of $37.5 million and $2.1 million, respectively as of September 30, 2017.

(2) Includes originated and acquired nonaccrual loans of $34.1 million and $3.6 million, respectively as of December 31, 2016.

35

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
AtLoan Modifications
In January 2023, the Company adopted ASU 2022-02, “Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures” (“ASU 2022-02”), which eliminated the accounting guidance for troubled debt restructurings (“TDRs”) while enhancing disclosure requirements for certain loan refinancing and restructurings by creditors when a borrower is experiencing financial difficulty. This guidance was applied on a prospective basis. Upon adoption of this guidance, the Nine Months Ended September 30, 2017 and 2016

 Three Months Ended
 September 30, 2017 September 30, 2016
 Average
Recorded
Investment
 Interest
Income
Recognized
 Average
Recorded
Investment
 Interest
Income
Recognized
 (In Thousands)
Originated:       
With no related allowance recorded:       
Commercial real estate$9,841
 $83
 $6,636
 $49
Commercial26,329
 173
 21,474
 147
Consumer3,559
 14
 3,480
 18
Total originated with no related allowance recorded39,729
 270
 31,590
 214
With an allowance recorded:       
Commercial real estate3,061
 38
 4,549
 48
Commercial18,210
 
 14,390
 3
Consumer
 
 248
 
Total originated with an allowance recorded21,271
 38
 19,187
 51
Total originated impaired loans and leases61,000
 308
 50,777
 265
        
Acquired:       
With no related allowance recorded:       
Commercial real estate2,116
 8
 9,952
 67
Commercial2,218
 8
 4,127
 29
Consumer4,837
 18
 8,475
 16
Total acquired with no related allowance recorded9,171
 34
 22,554
 112
With an allowance recorded:       
Commercial real estate
 
 
 
Commercial
 
 486
 
Consumer171
 1
 423
 2
  Total acquired with an allowance recorded171
 1
 909
 2
Total acquired impaired loans and leases9,342
 35
 23,463
 114
        
Total impaired loans and leases$70,342
 $343
 $74,240
 $379

36

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
NotesCompany estimates the reserve for modifications to Unaudited Consolidated Financial Statements (Continued)
At andborrowers experiencing financial difficulty in a manner similar to the process for the Nine Months Ended September 30, 2017 and 2016

 Nine Months Ended
 September 30, 2017 September 30, 2016
 Average
Recorded
Investment
 Interest
Income
Recognized
 Average
Recorded
Investment
 Interest
Income
Recognized
 (In Thousands)
Originated:       
With no related allowance recorded:       
Commercial real estate$10,200
 $205
 $5,655
 $119
Commercial24,206
 522
 16,602
 412
Consumer4,712
 44
 3,865
 55
Total originated with no related allowance recorded39,118
 771
 26,122
 586
With an allowance recorded:       
Commercial real estate3,377
 124
 4,957
 146
Commercial20,771
 1
 13,017
 5
Consumer
 
 165
 
Total originated with an allowance recorded24,148
 125
 18,139
 151
Total originated impaired loans and leases63,266
 896
 44,261
 737
        
Acquired:       
With no related allowance recorded:       
Commercial real estate5,009
 54
 8,341
 126
Commercial2,615
 26
 4,254
 66
Consumer5,551
 52
 7,795
 51
Total acquired with no related allowance recorded13,175
 132
 20,390
 243
With an allowance recorded:       
Commercial real estate
 
 1,458
 
Commercial
 
 486
 
Consumer169
 3
 490
 6
  Total acquired with an allowance recorded169
 3
 2,434
 6
Total acquired impaired loans and leases13,344
 135
 22,824
 249
        
Total impaired loans and leases$76,610
 $1,031
 $67,085
 $986


37

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

non-modified loans.
The following tables present information regarding impaired and non-impairedtable presents the amortized cost basis of loan modifications made to borrowers experiencing financial difficulty during the quarter ended March 31, 2023.The loans and leases atpresented in the dates indicated:following table relate to two customer relationships.
March 31, 2023
Number of LoansAmortized Cost% of Total Class of Loans and LeasesFinancial Effect
(In thousands)
Maturity Extension
C&I17$6,123 0.41 %All 17 loans were given 6-month maturity extensions and restructured payment plans to assist borrowers. The financial effect was deemed "de minimis."
Total17$6,123 0.41 %
 At September 30, 2017
 Commercial Real Estate Commercial Consumer Total
 (In Thousands)
Allowance for Loan and Lease Losses:       
Originated:       
Individually evaluated for impairment$1
 $7,488
 $
 $7,489
Collectively evaluated for impairment28,058
 23,499
 5,364
 56,921
Total originated loans and leases28,059
 30,987
 5,364
 64,410
        
Acquired:       
Individually evaluated for impairment
 
 21
 21
Collectively evaluated for impairment156
 14
 22
 192
Acquired with deteriorated credit quality653
 74
 63
 790
Total acquired loans and leases809
 88
 106
 1,003
        
Total allowance for loan and lease losses$28,868
 $31,075
 $5,470
 $65,413
        
Loans and Leases:       
Originated:       
Individually evaluated for impairment$12,677
 $37,545
 $3,320
 $53,542
Collectively evaluated for impairment2,873,844
 1,533,911
 917,947
 5,325,702
Total originated loans and leases2,886,521
 1,571,456
 921,267
 5,379,244
        
Acquired:       
Individually evaluated for impairment
 1,522
 1,912
 3,434
Collectively evaluated for impairment36,283
 6,641
 60,472
 103,396
Acquired with deteriorated credit quality (1)
106,205
 5,677
 41,484
 153,366
Total acquired loans and leases142,488
 13,840
 103,868
 260,196
        
Total loans and leases$3,029,009
 $1,585,296
 $1,025,135
 $5,639,440

(1) Includes impaired loansThe following table presents the aging analysis of $5.3 million as of September 30, 2017.loan modifications made to borrowers experiencing financial difficulty during the quarter ended March 31, 2023.

March 31,
2023
Current30-60 Days Past Due61-90 Days Past Due90+ Days Past DueModifiedPaid OffCharged Off
(In thousands)
Total Modifications$6,123 — — — — — — 





38

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

 At December 31, 2016
 Commercial Real Estate Commercial Consumer Total
 (In Thousands)
Allowance for Loan and Lease Losses:       
Originated:       
Individually evaluated for impairment$28
 $97
 $
 $125
Collectively evaluated for impairment26,830
 20,682
 4,776
 52,288
Total originated loans and leases26,858
 20,779
 4,776
 52,413
        
Acquired:       
Individually evaluated for impairment
 
 27
 27
Collectively evaluated for impairment221
 13
 34
 268
Acquired with deteriorated credit quality566
 114
 278
 958
Total acquired loans and leases787
 127
 339
 1,253
        
Total allowance for loan and lease losses$27,645
 $20,906
 $5,115
 $53,666
        
Loans and Leases:       
Originated:       
Individually evaluated for impairment$13,097
 $37,637
 $4,711
 $55,445
Collectively evaluated for impairment2,732,392
 1,437,472
 858,251
 5,028,115
Total originated loans and leases2,745,489
 1,475,109
 862,962
 5,083,560
        
Acquired:       
Individually evaluated for impairment690
 3,047
 2,028
 5,765
Collectively evaluated for impairment47,599
 10,863
 70,115
 128,577
Acquired with deteriorated credit quality (1)
124,789
 6,389
 49,784
 180,962
Total acquired loans and leases173,078
 20,299
 121,927
 315,304
        
Total loans and leases$2,918,567
 $1,495,408
 $984,889
 $5,398,864

(1) Includes impaired loans of $14.6 million as of December 31, 2016.









39

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

Troubled Debt Restructured Loans and Leases
A specific valuation allowance for losses on troubled debt restructured loans is determined by comparing the net carrying amount of the troubled debt restructured loan with the restructured loan's cash flows discounted at the original effective rate.
The following table sets forth information regarding troubled debt restructured loans and leases at the dates indicated:
At December 31, 2022
(In Thousands)
Troubled debt restructurings:
On accrual$16,385 
On nonaccrual3,527 
Total troubled debt restructurings$19,912 
 At September 30, 2017
At December 31, 2016
 (In Thousands)
Troubled debt restructurings:   
On accrual$14,024
 $13,883
On nonaccrual15,290
 11,919
Total troubled debt restructurings$29,314
 $25,802


Total troubled debt restructuring loans and leases increased by $3.5 million to $29.3 million at September 30, 2017 from
$25.8 million at December 31, 2016, primarily driven by the restructuring2022 were $19.9 million.
29

Table of six commercial loans, offset by the repayment of other troubled debt restructured loans.Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
The recorded investmentamortized cost basis in troubled debt restructuringsTDR loans and the associated specific allowancescredit losses for loan and lease losses, in the originated and acquired loan and lease portfolios, that were modified during the periods indicated, are as follows.
 At and for the Three Months Ended September 30, 2017
   Recorded Investment 
Specific
Allowance for
Loan and
Lease Losses
     
Defaulted (1)
 
Number of
Loans/
Leases
 
At
Modification
 
At End of
Period
  
Nonaccrual
Loans and
Leases
 
Additional
Commitment
 
Number of
Loans/
Leases
 
Recorded
Investment
 (Dollars in Thousands)
Originated:               
Commercial1
 $350
 $350
 $152
 $350
 $
 
 $
Equipment financing5
 817
 804
 
 804
 
 
 
Total originated6
 $1,167
 $1,154
 $152
 $1,154
 $
 
 $
 At and for the Three Months Ended March 31, 2022
  Amortized CostSpecific
Allowance for
Credit Losses
 
Defaulted (1)
 Number of
Loans/
Leases
At
Modification
At End of
Period
Nonaccrual
Loans and
Leases
Number of
Loans/
Leases
Amortized Cost
 (Dollars in Thousands)
       
Equipment financing12 $601 $601 $— $407 $78 
Total loans and leases12 $601 $601 $— $407 $78 

(1) Includes loans and leases that have been modified within the past twelve months and subsequently had payment defaults during the period indicated.

There were no acquired loans and leases that met the definition of a troubled debt restructured during the three months ended September 30, 2017.

40

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

 At and for the Three Months Ended September 30, 2016
   Recorded Investment 
Specific
Allowance for
Loan and
Lease Losses
     
Defaulted (1)
 
Number of
Loans/
Leases
 
At
Modification
 
At End of
Period
  
Nonaccrual
Loans and
Leases
 
Additional
Commitment
 
Number of
Loans/
Leases
 
Recorded
Investment
 (Dollars in Thousands)
Originated:               
Commercial2
 $812
 $812
 $220
 $473
 $
 1
 $348
Equipment financing1
 433
 433
 
 433
 
 2
 353
Total originated3
 1,245
 1,245
 220
 906
 
 3
 701
                
Acquired:               
Home equity4
 323
 323
 20
 146
 
 
 
Total acquired4
 323
 323
 20
 146
 
 
 
                
Total loans and leases7
 $1,568
 $1,568
 $240
 $1,052
 $
 3
 $701

(1) Includes loans and leases that have been modified within the past twelve months and subsequently had payment defaults during the period indicated.

 At and for the Nine Months Ended September 30, 2017
   Recorded Investment 
Specific
Allowance for
Loan and
Lease Losses
     
Defaulted (1)
 
Number of
Loans/
Leases
 
At
Modification
 
At End of
Period
  
Nonaccrual
Loans and
Leases
 
Additional
Commitment
 
Number of
Loans/
Leases
 
Recorded
Investment
 (Dollars in Thousands)
Originated:               
Commercial real estate1
 $190
 $189
 $
 $
 $
 
 $
Commercial10
 7,861
 6,793
 2,520
 5,111
 
 2
 3,431
Equipment financing14
 2,401
 2,321
 
 2,136
 
 
 
Total originated25
 $10,452
 $9,303
 $2,520
 $7,247
 $
 2
 $3,431

There were no acquired loans and leases that met the definition of a troubled debt restructured during the nine months ended September 30, 2017.



41

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

 At and for the Nine Months Ended September 30, 2016
   Recorded Investment 
Specific
Allowance for
Loan and
Lease Losses
     
Defaulted (1)
 
Number of
Loans/
Leases
 
At
Modification
 
At End of
Period
  
Nonaccrual
Loans and
Leases
 
Additional
Commitment
 
Number of
Loans/
Leases
 
Recorded
Investment
 (Dollars in Thousands)
Originated:               
Commercial real estate2
 $1,155
 $1,127
 $
 $1,127
 $
 
 $
Commercial22
 9,701
 9,504
 3,478
 9,136
 
 2
 376
Equipment financing3
 797
 786
 
 786
 
 2
 353
Total originated27
 11,653
 11,417
 3,478
 11,049
 
 4
 729
                
Acquired:               
Commercial
 
 
 
 
 
 2
 696
Residential mortgage5
 374
 372
 20
 146
 
 
 
Total acquired5
 374
 372
 20
 146
 
 2
 696
                
Total loans and leases32
 $12,027
 $11,789
 $3,498
 $11,195
 $
 6
 $1,425
The following table sets forth the Company's end-of-period balancesamortized cost basis for troubled debt restructurings that were modified during the periods indicated, by type of modification.
 Three Months Ended September 30, Nine Months Ended September 30,
 2017 2016 2017 2016
 (In Thousands)
Loans with one modification:       
Extended maturity$
 $528
 $4,463
 $604
Adjusted principal
 
 19
 410
Interest only350
 
 350
 2,346
Combination maturity, principal, interest rate804
 1,040
 2,253
 8,201
Total loans with one modification1,154
 1,568
 7,085
 11,561
        
Loans with more than one modification:       
Extended maturity
 
 1,870
 228
Combination maturity, principal, interest rate
 
 348
 
Total loans with more than one modification
 
 2,218
 228
        
Total loans with modifications$1,154
 $1,568
 $9,303
 $11,789
Three Months Ended March 31,
2022
(In Thousands)
Loans with one modification:
Extended maturity$311 
Combination maturity, principal, interest rate290 
Total loans with modifications$601 
The troubled debt restructuringTDR loans and leases that were modified for the nine months ended September 30, 2017 and 2016 were $9.3 million and $11.8 million, respectively. The decrease in troubled debt restructuring loans and leases that were modified for the nine months ended September 30, 2017 was primarily due to the decrease in the modification of loans and leases secured by taxi medallions.
There was $2.2 million in troubled debt restructuring loans and leases with more than one modification during the nine months ended September 30, 2017 and none during the three months ended September 30, 2017.
The net charge-offs of the performing and nonperforming troubled debt restructuring loans and leases for the three and nine months ended September 30, 2017March 31, 2022 were $0.6 million and $2.6 million, respectively, driven by the charge-off of fivemillion.

42

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

commercial loans secured by taxi medallions. The were no net charge-offs for performing and nonperforming troubled debt restructuring loans and leases for the three and nine months ended September 30, 2016 were $28.0 thousand and $110.0 thousand, respectively.March 31, 2022.
As of September 30, 2017 and 2016, there were noThe commitments to lend funds to debtors owing receivables whose terms had been modified in troubled debt restructurings.TDRs as of March 31, 2022 were $1.0 million.
(6) Goodwill and Other Intangible Assets
The following table sets forth the carrying value of goodwill and other intangible assets at the dates indicated:
 At March 31, 2023At December 31, 2022
 (In Thousands)
Goodwill$160,427 $160,427 
Additions80,795 — 
Balance at end of period241,222 160,427 
Other intangible assets:
Core deposits28,991 692 
Trade name1,089 1,089 
Total other intangible assets30,080 1,781 
Total goodwill and other intangible assets$271,302 $162,208 
30

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
 At September 30, 2017 At December 31, 2016
 (In Thousands)
Goodwill$137,890
 $137,890
Other intangible assets:   
Core deposits5,474
 7,044
Trade name1,089
 1,089
Total other intangible assets6,563
 8,133
Total goodwill and other intangible assets$144,453
 $146,023
The addition of goodwill and the increase in core deposit intangibles, at March 31, 2023 are due to the excess of the purchase paid over the fair value of the net assets acquired from the PCSB acquisition.
At December 31, 2013, the Company concluded that the BankRI name would continue to be utilized in its marketing strategies; therefore, the trade name with carrying value of $1.1 million, has an indefinite life and ceased to amortize.
The weighted-average amortization period for the core deposit intangible is 8.15.97 years.
The estimated aggregate future amortization expense (in thousands) for other intangible assets for each of the next five years and thereafter is as follows:
Remainder of 2023$5,863 
Year ending:
20246,636 
20255,507 
20264,398 
20273,329 
20282,177 
Thereafter1,081 
Total$28,991 
Remainder of 2017$519
Year ending: 
20181,669
20191,295
2020944
2021601
2022299
Thereafter147
Total$5,474
(7) Accumulated Other Comprehensive Income (Loss)
For the three and nine months ended September 30, 2017March 31, 2023 and 2016,2022, the Company’s accumulated other comprehensive income (loss) includes the following twothree components: (i) unrealized holding gains (losses) on investment securities available-for-sale; (ii) change in the fair value of cash flow hedges; and (ii)(iii) adjustment of accumulated obligation for postretirement benefits.
 

43

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

Changes in accumulated other comprehensive income (loss) by component, net of tax, were as follows for the periods indicated:
 Three Months Ended March 31, 2023
 
Investment
Securities
 Available-for-Sale
Net Change in Fair Value of Cash Flow HedgesPostretirement
Benefits
Accumulated Other
Comprehensive
Income (Loss)
 (In Thousands)
Balance at December 31, 2022$(60,192)$(2,243)$488 $(61,947)
Other comprehensive income (loss)7,911 946 — 8,857 
Reclassification adjustment for (income) expense recognized in earnings— 402 — 402 
Balance at March 31, 2023$(52,281)$(895)$488 $(52,688)
 Three Months Ended March 31, 2022
 
Investment
Securities
 Available-for-Sale
Net Change in Fair Value of Cash Flow HedgesPostretirement
Benefits
Accumulated Other
Comprehensive
Income (Loss)
 (In Thousands)
Balance at December 31, 2021$(183)$37 $36 $(110)
Other comprehensive income (loss)(29,267)57 — (29,210)
Reclassification adjustment for (income) expense recognized in earnings— (2)— (2)
Balance at March 31, 2022$(29,450)$92 $36 $(29,322)

31
 Three Months Ended September 30, 2017
 
Investment
Securities
 Available-for-Sale
 
Postretirement
Benefits
 
Accumulated Other
Comprehensive
Loss
 (In Thousands)
Balance at June 30, 2017$(2,570) $395
 $(2,175)
Other comprehensive income282
 
 282
Balance at September 30, 2017$(2,288) $395
 $(1,893)

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
 Three Months Ended September 30, 2016
 
Investment
Securities
 Available-for-Sale
 
Postretirement
Benefits
 
Accumulated Other
Comprehensive
Loss
 (In Thousands)
Balance at June 30, 2016$5,618
 $351
 $5,969
Other comprehensive loss(1,073) 
 (1,073)
Balance at September 30, 2016$4,545
 $351
 $4,896

 Nine Months Ended September 30, 2017
 
Investment
Securities
 Available-for-Sale
 
Postretirement
Benefits
 
Accumulated Other
Comprehensive
Loss
 (In Thousands)
Balance at December 31, 2016$(4,213) $395
 $(3,818)
Other comprehensive income1,925
 
 1,925
Balance at September 30, 2017$(2,288) $395
 $(1,893)
 Nine Months Ended September 30, 2016
 
Investment
Securities
 Available-for-Sale
 
Postretirement
Benefits
 
Accumulated Other
Comprehensive
Loss
 (In Thousands)
Balance at December 31, 2015$(2,827) $351
 $(2,476)
Other comprehensive income

7,372
 
 7,372
Balance at September 30, 2016$4,545
 $351
 $4,896

The Company did not reclassify any amounts out of accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2017 and 2016.
(8) Derivatives and Hedging Activities
The Company utilizesexecutes loan level derivatives which consist of interest-ratederivative products such as interest rate swap agreements with commercial banking customers to aid them in managing their interest rate risk. The interest rate swap contracts (swaps, caps and floors), andallow the commercial banking customers to convert floating rate loan payments to fixed rate loan payments. The Company concurrently enters into offsetting swaps with a third party financial institution, effectively minimizing its net risk participationexposure resulting from such transactions. The third party financial institution exchanges the customer's fixed rate loan payments for floating rate loan payments. As the interest rate swap agreements as part ofassociated with this program do not meet hedge accounting requirements, changes in the Company's interest-rate risk management strategy for certain assets and liabilities and not for speculative purposes.fair value are recognized directly in earnings. Based on the Company's intended use for the loan level derivatives at inception, the Company designates the derivative as either an economic hedge of an asset or liability, or a hedging instrument subject to the hedge accounting provisions of FASB ASC Topic 815, "Derivatives and Hedging".
Interest-rate swap, cap and floor agreements are entered into as hedges against future interest-rate fluctuations on specifically identified assets or liabilities. The Company did not have derivative fair value hedges or derivativebelieves using interest rate derivatives adds stability to interest income and expense and allows the Company to manage its exposure to interest rate movements. The Company enters into interest rate swaps as part of its interest rate risk management strategy. These interest rate swaps are designated as cash flow hedges asand involve the receipt of September 30, 2017 or December 31, 2016.

44

BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At andvariable rate amounts from a counterparty in exchange for the Nine Months Ended September 30, 2017 and 2016

Derivatives not designated as hedges are not speculative but rather result from a service the Company provides to certain customers for a fee. The Company executes loan level derivative products such as interest-rate swap agreements with commercial banking customers to aid them in managing their interest-rate risk. The interest-rate swap contracts allow the commercial banking customers to convert floating-rate loan payments to fixed-rate loanmaking fixed payments. The Company concurrently enters into offsettinginterest rate swaps with a third party financial institution, effectively minimizing its netas hedging instruments against the interest rate risk exposure resulting from such transactions. The third-party financial institution exchanges the customer's fixed-rate loan payments for floating-rate loan payments. As the interest-rate swap agreements associated with this program do not meet hedge accounting requirements, changesthe Company's FHLB borrowings and loan portfolio. For derivative instruments that are designated and qualify as cash flow hedging instruments, the effective portion of the gains or losses is reported as a component of other comprehensive income ("OCI"), and is reclassified into earnings in the fair value are recognized directly inperiod that the hedged forecasted transaction affects earnings.
The following table reflects the Company's derivative positions as of the date indicated below for interest rate derivatives which qualify as cash flow hedges for accounts purposes.
 At March 31, 2023
Notional AmountAverage MaturityWeighted Average RateFair Value
 Current Rate PaidReceived Fixed Swap Rate
 (in thousands)(in years)(in thousands)
Interest rate swaps on loans$225,000 3.654.85 %3.39 %$(1,430)

 At December 31, 2022
Notional AmountAverage MaturityWeighted Average RateFair Value
 Current Rate PaidReceived Fixed Swap Rate
 (in thousands)(in years)(in thousands)
Interest rate swaps on loans$150,000 3.774.11 %3.26 %$(3,030)

The Company utilizes risk participation agreements with other banks participating in commercial loan arrangements. Participating banks guarantee the performance on borrower-related interest rate swap contracts. Risk participation agreements are derivative financial instruments and are recorded at fair value. These derivatives are not designated as hedges and therefore, changes in fair value are recorded directly through earnings at each reporting period.
Under a risk participation-out agreement, a derivative asset, the Company participates out a portion of the credit risk associated with the interest rate swap position executed with the commercial borrower, for a fee paid to the participating bank. Under a risk participation-in agreement, a derivative liability, the Company assumes, or participates in, a portion of the credit risk associated with the interest rate swap position with the commercial borrower, for a fee received from the other bank.
The Company offers foreign exchange contracts to commercial borrowers to accommodate their business needs. These foreign exchange contracts do not qualify as hedges for accounting purposes. To mitigate the market and liquidity risk associated with these foreign exchange contracts, the Company enters into similar offsetting positions.
32

Table of Contents
BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
Asset derivatives and liability derivatives are included in other assets and accrued expenses and other liabilities on the unaudited consolidated balance sheets.
The following tables presentspresent the Company's customer related derivative positions for the periods indicated below for those derivatives not designated as hedging.
Notional Amount Maturing Notional Amount Maturing
Number of Positions Less than 1 year Less than 2 years Less than 3 years Less than 4 years Thereafter Total Fair Value Number of PositionsLess than 1 yearLess than 2 yearsLess than 3 yearsLess than 4 yearsThereafterTotalFair Value
September 30, 2017March 31, 2023
(Dollars In Thousands) (Dollars In Thousands)
Loan level derivatives               Loan level derivatives
Receive fixed, pay variable61
 $
 $5,996
 $
 $28,378
 $431,096
 $465,470
 $9,975
Receive fixed, pay variable152 $68,930 $32,353 $133,823 $130,956$1,407,673 $1,773,735 $76,665 
Pay fixed, receive variable61
 
 5,996
 
 28,378
 431,096
 465,470
 9,975
Pay fixed, receive variable152 68,930 32,353 133,823 130,9561,407,673 1,773,735 76,665 
Risk participation-out agreements5
 
 
 
 8,732
 20,126
 28,858
 49
Risk participation-out agreements63 38,643 — 27,484 32,621412,716 511,464 1,946 
Risk participation-in agreements1
 
 
 
 
 3,825
 3,825
 14
Risk participation-in agreements18,343 — — 27,242 29,172 74,757 39 
               
Foreign exchange contracts               Foreign exchange contracts
Buys foreign currency, sells U.S. currency25
 $1,200
 $
 $
 $
 $
 $1,200
 $22
Buys foreign currency, sells U.S. currency14 $2,631 $— $— $— $— $2,631 $339 
Sells foreign currency, buys U.S. currency50
 1,208
 
 
 
 
 1,208
 14
Sells foreign currency, buys U.S. currency14 2,650 — — — — 2,650 320 


 Notional Amount Maturing
 Number of PositionsLess than 1 yearLess than 2 yearsLess than 3 yearsLess than 4 yearsThereafterTotalFair Value
December 31, 2022
(Dollars In Thousands)
Loan level derivatives
Receive fixed, pay variable132 $71,547 $69,454 $141,498 $68,140 $1,139,070 $1,489,709 $103,640 
Pay fixed, receive variable132 71,547 69,454 141,498 68,140 1,139,070 1,489,709 103,640 
Risk participation-out agreements54 38,931 22,979 27,508 6,222 297,984 393,624 347 
Risk participation-in agreements18,421 — — 23,766 33,036 75,223 31 
Foreign exchange contracts
Buys foreign currency, sells U.S. currency12 $2,383 $— $— $— $— $2,383 $130 
Sells foreign currency, buys U.S. currency12 2,400 — — — — 2,400 112 
45
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

 Notional Amount Maturing
 Number of Positions Less than 1 year Less than 2 years Less than 3 years Less than 4 years Thereafter Total Fair Value
 December 31, 2016
 (Dollars In Thousands)
Loan level derivatives               
Receive fixed, pay variable54
 $
 $4,025
 $2,141
 $29,501
 $348,113
 $383,780
 $9,738
Pay fixed, receive variable54
 
 4,025
 2,141
 29,501
 348,113
 383,780
 9,738
Risk participation-out agreements5
 
 
 
 9,078
 7,883
 16,961
 20
                
Foreign exchange contracts               
Buys foreign currency, sells U.S. currency3
 $195
 $
 $
 $
 $
 $195
 $
Sells foreign currency, buys U.S. currency3
 195
 
 
 
 
 195
 
As of December 31, 2016, the Company held no risk participation-in agreements. As of December 31, 2016, the fair value of the foreign exchange contracts was nominal. Refer also to Note 11, "Fair Value of Financial Instruments."
Certain derivative agreements contain provisions that require the Company to post collateral if the derivative exposure exceeds a threshold amount. The Company posted collateral to dealer counterparties of $28.4$8.8 million and $34.5$2.4 million in the normal course of business as of September 30, 2017March 31, 2023 and December 31, 2016,2022, respectively.
The tables below present the offsetting of derivatives and amounts subject to master netting agreements not offset in the unaudited consolidated balance sheet at the dates indicated.
At September 30, 2017 At March 31, 2023
Gross
Amounts Recognized
 
Gross Amounts
Offset in the
Statement of Financial Position
 Net Amounts  Presented in the Statement of Financial Position 
Gross Amounts Not Offset in the
Statement of Financial Position
 Net AmountGross
Amounts Recognized
Gross Amounts
Offset in the
Statement of Financial Position
Net Amounts  Presented in the Statement of Financial PositionGross Amounts Not Offset in the
Statement of Financial Position
Net Amount
 Financial Instruments Pledged Cash Collateral Pledged  Financial Instruments PledgedCash Collateral Pledged
(In Thousands) (In Thousands)
Asset derivatives           Asset derivatives
Derivatives designated as hedging instruments:Derivatives designated as hedging instruments:
Interest rate derivativesInterest rate derivatives$854 $— $854 $— $— $854 
Derivatives not designated as hedging instruments:Derivatives not designated as hedging instruments:
Loan level derivatives$9,975
 $
 $9,975
 $
 $
 $9,975
Loan level derivatives$104,707 $— $104,707 $— $— $104,707 
Risk participation-out agreements49
 
 49
 
 
 49
Risk participation-out agreements1,946 — 1,946 — — 1,946 
Foreign exchange contracts22
 
 22
 
 
 22
Foreign exchange contracts339 — 339 — — 339 
Total$10,046
 $
 $10,046
 $
 $
 $10,046
Total$107,846 $— $107,846 $— $— $107,846 
           
Liability derivatives           Liability derivatives
Derivatives designated as hedging instruments:Derivatives designated as hedging instruments:
Interest rate derivativesInterest rate derivatives$2,285 $— $2,285 $— $— $2,285 
Derivatives not designated as hedging instruments:Derivatives not designated as hedging instruments:
Loan level derivatives$9,975
 $
 $9,975
 $28,371
 $
 $
Loan level derivatives$104,707 $— $104,707 $5,609 $3,224 $95,874 
Risk participation-in agreements14
 
 14
 
 
 
Risk participation-in agreements39 — 39 — — 39 
Foreign exchange contracts14
 
 14
 
 
 
Foreign exchange contracts320 — 320 — — 320 
Total$10,003
 $
 $10,003
 $28,371
 $
 $
Total$107,351 $— $107,351 $5,609 $3,224 $98,518 
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

 At December 31, 2016
 Gross
Amounts Recognized
 
Gross Amounts
Offset in the
Statement of Financial Position
 Net Amounts  Presented in the Statement of Financial Position 
Gross Amounts Not Offset in the
Statement of Financial Position
 Net Amount
    Financial Instruments Pledged Cash Collateral Pledged 
 (In Thousands)
Asset derivatives           
Loan level derivatives$9,738
 $
 $9,738
 $
 $
 $9,738
Risk participation-out agreements20
 
 20
 
 
 20
Total$9,758
 $
 $9,758
 $
 $
 $9,758
            
Liability derivatives           
Loan level derivatives$9,738
 $
 $9,738
 $33,744
 $720
 $
Total$9,738
 $
 $9,738
 $33,744
 $720
 $
As of December 31, 2016, the Company held no risk participation-in agreements. As of December 31, 2016, the fair value of the foreign exchange contracts was nominal.
 At December 31, 2022
Gross
Amounts Recognized
Gross Amounts
Offset in the
Statement of Financial Position
Net Amounts  Presented in the Statement of Financial PositionGross Amounts Not Offset in the
Statement of Financial Position
Net Amount
 Financial Instruments PledgedCash Collateral Pledged
 (In Thousands)
Asset derivatives
Derivatives designated as hedging instruments:
Interest rate derivatives$34 $— $34 $— $— $34 
Derivatives not designated as hedging instruments:
Loan level derivatives$108,963 $— $108,963 $— $— $108,963 
Risk participation-out agreements347 — 347 — — 347 
Foreign exchange contracts130 — 130 — — 130 
Total$109,474 $— $109,474 $— $— $109,474 
Liability derivatives
Derivatives designated as hedging instruments:
Interest rate derivatives$3,170 $— $3,170 $— $— $3,170 
Derivatives not designated as hedging instruments:
Loan level derivatives$108,963 $— $108,963 $2,393 $— $106,570 
Risk participation-in agreements31 — 31 — — 31 
Foreign exchange contracts112 — 112 — — 112 
Total$112,276 $— $112,276 $2,393 $— $109,883 
The Company has agreements with certain of its derivative counterparties that contain credit-risk-related contingent provisions. These provisions provide the counterparty with the right to terminate its derivative positions and require the Company to settle its obligations under the agreements if the Company defaults on certain of its indebtedness or if the Company fails to maintain its status as a well-capitalized institution.

Fair Value
Three Months Ended 
 March 31, 2023
Three Months Ended 
 March 31, 2022
 (Dollars in Thousands)
Derivatives designated as hedges$(1,430)$116 
(Loss) gain in OCI on derivatives (effective portion), net of tax$(895)$91 
Gain (loss) reclassified from OCI into interest income or interest expense (effective portion)$(543)$

The guidance in ASU 2017-12 requires that amounts in accumulated other comprehensive income that are included in the assessment of effectiveness should be reclassified into earnings in the same period in which the hedged forecasted transactions impact earnings. A portion of the balance reported in accumulated other comprehensive income related to derivatives will be
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
reclassified to interest expense as interest payments are made or received on the Company’s interest rate swaps. The Company monitors the risk of counterparty default on an ongoing basis.

(9) Stock Based Compensation

As of September 30, 2017,March 31, 2023, the Company had threeone active recognitionequity plan: the Brookline Bancorp, Inc. 2021 Stock Option and retention plans:Incentive Plan ("2021 Plan"). As a result of the 2003 Recognition and Retention2021 Plan (the "2003 RRP") with 1,250,000 authorized shares,having been approved by the 2011 Restricted Stock Award Plan ("2011 RSA") with 500,000 authorized shares andCompany's stockholders at the 2021 annual meeting of stockholders, the Company discontinued granting awards under the Brookline Bancorp, Inc. 2014 Equity Incentive Plan ("(the "2014 Plan"), and no further shares will be granted as awards under the 2014 Plan. The Brookline Bancorp, Inc. 2011 Restricted Stock Plan (the "2011 Plan") with 1,750,000 authorized shares. The 2003 RRP,expired in July 2021, and the Company has not issued shares from the 2011 RSAPlan since the adoption of the 2014 Plan. The 2021 Plan and the 2014 Plan are collectivelytogether referred to as the "Plans". The purpose of the Plans is to promote the long-term financial success of the Company and its subsidiaries by providing a means to attract, retain and reward individuals who contribute to such success and to further align their interests with those of the Company's stockholders."Plans."

Of the awarded shares under the Plans, generally 50% vest ratably over three years with one-third of such shares vesting at each of the first, second and third anniversary dates of the awards. These are referred to as "time-based shares". The remaining 50% of each award has a cliff vesting schedule and will vest three years after the award date based on the level of the Company's achievement of identified performance targets in comparison to the level of achievement of such identified performance targets by a defined peer group comprised of 17 financial institutions.group. These are referred to as "performance-based shares". The specific performance measure targets relate to return on assets, return on tangible equity, asset quality and total stockholder return (share price appreciation from date of award plus dividends paid as a percent of the Company's common stock share price on the date of award). If a participant leaves the Company prior to the third anniversary date of an award, any unvested shares are usually forfeited. Dividends declared with respect to shares awarded will be held by the Company and paid to the participant only when the shares vest.

Under all the Plans, shares of the Company's common stock wereare reserved for issuance as restricted stock awards to officers, employees, and non-employee directors of the Company. Shares issued upon vesting may be either authorized but unissued shares or reacquired shares held by the Company as treasury shares. Any shares not issued because vesting requirements are not met will be retired back to treasury and be made available again for issuance under the Plans.

During the three and nine months ended September 30, 2017, 151,083March 31, 2023 and 163,204March 31, 2022, no shares were issued, upon satisfaction of required conditions of the Plans. During the three and nine months ended September 30, 2016, 134,809 and 136,139 shares were issuedrespectively, upon satisfaction of required conditions of the Plans.

Total expense for the Plans was $0.7$0.9 million and $0.6$0.8 million for the three months ended September 30, 2017March 31, 2023 and 2016,2022, respectively. Total expense for the Plans was $1.8 million

(10) Earnings per Share ("EPS")

The following table is a reconciliation of basic EPS and $1.4 million for the nine months ended September 30, 2017 anddiluted EPS:

Three Months Ended
 March 31, 2023March 31, 2022
 BasicFully
Diluted
BasicFully
Diluted
(Dollars in Thousands, Except Per Share Amounts)
Numerator:
Net income$7,560 $7,560 $24,705 $24,705 
Denominator:
Weighted average shares outstanding86,563,641 86,563,641 77,617,227 77,617,227 
Effect of dilutive securities— 274,165 — 309,595 
Adjusted weighted average shares outstanding86,563,641 86,837,806 77,617,227 77,926,822 
EPS$0.09 $0.09 $0.32 $0.32 

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

2016, respectively. The increase in the total expense for the Plans for the three and nine months ended September 30, 2017 is due to the increase in the grant price of the shares which is driven by the Company’s stock price.
(10) Earnings per Share ("EPS")
The following table is a reconciliation of basic EPS and diluted EPS:
 Three Months Ended
 September 30, 2017 September 30, 2016
 Basic 
Fully
Diluted
 Basic 
Fully
Diluted
 (Dollars in Thousands, Except Per Share Amounts)
Numerator:       
Net income$15,366
 $15,366
 $13,617
 $13,617
        
Denominator:       
Weighted average shares outstanding76,452,539
 76,452,539
 70,299,722
 70,299,722
Effect of dilutive securities
 306,891
 
 151,038
Adjusted weighted average shares outstanding76,452,539
 76,759,430
 70,299,722
 70,450,760
        
EPS$0.20
 $0.20
 $0.19
 $0.19
 Nine Months Ended
 September 30, 2017 September 30, 2016
 Basic 
Fully
Diluted
 Basic 
Fully
Diluted
 (Dollars in Thousands, Except Per Share Amounts)
Numerator:       
Net income$43,691

$43,691
 $39,083

$39,083
        
Denominator:       
Weighted average shares outstanding73,743,658
 73,743,658
 70,228,127
 70,228,127
Effect of dilutive securities
 373,522
 
 166,338
Adjusted weighted average shares outstanding73,743,658
 74,117,180
 70,228,127
 70,394,465
        
EPS$0.59
 $0.59
 $0.56
 $0.56
(11) Fair Value of Financial Instruments
A description of the valuation methodologies used for assets and liabilities measured at fair value on a recurring and non-recurring basis, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. There were no changes in the valuation techniques used during the three and nine months ended September 30, 2017March 31, 2023 and 2016.

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

March 31, 2022.
Assets and Liabilities Recorded at Fair Value on a Recurring Basis
The following tables set forth the carrying value of assets and liabilities measured at fair value on a recurring basis at the dates indicated:
Carrying Value as of September 30, 2017 Carrying Value as of March 31, 2023
Level 1 Level 2 Level 3 Total Level 1Level 2Level 3Total
(In Thousands) (In Thousands)
Assets: 
  
  
  
Assets:    
Investment securities available-for-sale:       Investment securities available-for-sale:    
GSE debentures$
 $139,344
 $
 $139,344
GSE debentures$— $177,222 $— $177,222 
GSE CMOs
 135,280
 
 135,280
GSE CMOs— 67,684 — 67,684 
GSE MBSs
 182,118
 
 182,118
GSE MBSs— 188,793 — 188,793 
SBA commercial loan asset-backed securities
 77
 
 77
Municipal obligationsMunicipal obligations— 3,356 19,956 23,312 
Corporate debt obligations
 58,891
 
 58,891
Corporate debt obligations— 25,238 12,058 37,296 
U.S. Treasury bonds
 4,811
 
 4,811
U.S. Treasury bonds— 572,250 — 572,250 
Trust preferred securities
 1,403
 
 1,403
Marketable equity securities986
 
 
 986
Foreign government obligationsForeign government obligations— 475 — 475 
Total investment securities available-for-sale$986
 $521,924
 $
 $522,910
Total investment securities available-for-sale$— $1,035,018 $32,014 $1,067,032 
Assets:Assets:
Interest rate derivativesInterest rate derivatives— 854 — 854 
Derivatives not designated as hedging instruments:Derivatives not designated as hedging instruments:
Loan level derivatives$
 $9,975
 $
 $9,975
Loan level derivatives— 104,707 — 104,707 
Risk participation-out agreements
 49
 
 49
Risk participation-out agreements— 1,946 — 1,946 
Foreign exchange contracts
 22
 
 22
Foreign exchange contracts— 339 — 339 
Liabilities:       Liabilities:    
Interest rate derivativesInterest rate derivatives$— $2,285 $— $2,285 
Derivatives not designated as hedging instruments:Derivatives not designated as hedging instruments:
Loan level derivatives$
 $9,975
 $
 $9,975
Loan level derivatives— 104,707 — 104,707 
Risk participation-in agreements
 14
 
 14
Risk participation-in agreements— 39 — 39 
Foreign exchange contracts
 14
 
 14
Foreign exchange contracts— 320 — 320 
37
 Carrying Value as of December 31, 2016
 Level 1 Level 2 Level 3 Total
 (In Thousands)
Assets:       
Investment securities available-for-sale:       
GSE debentures$
 $97,020
 $
 $97,020
GSE CMOs
 158,040
 
 158,040
GSE MBSs
 212,915
 
 212,915
SBA commercial loan asset-backed securities
 107
 
 107
Corporate debt obligations
 48,485
 
 48,485
U.S. Treasury bonds
 4,737
 
 4,737
Trust preferred securities
 1,358
 
 1,358
Marketable equity securities972
 
 
 972
Total investment securities available-for-sale$972
 $522,662
 $

$523,634
Loan level derivatives$
 $9,738
 $
 $9,738
Risk participation-out agreements
 20
 
 20
Liabilities:      

Loan level derivatives$
 $9,738
 $
 $9,738

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

 Carrying Value as of December 31, 2022
 Level 1Level 2Level 3Total
 (In Thousands)
Assets:    
Investment securities available-for-sale:    
GSE debentures$— $152,422 $— $152,422 
GSE CMOs— 18,220 — 18,220 
GSE MBSs— 140,576 — 140,576 
Corporate debt obligations— 13,764 — 13,764 
U.S. Treasury bonds— 331,307 — 331,307 
Foreign government obligations— 477 — 477 
Total investment securities available-for-sale$— $656,766 $— $656,766 
Interest rate derivatives— 34 — 34 
Loan level derivatives— 108,963 — 108,963 
Risk participation-out agreements— 347 — 347 
Foreign exchange contracts— 130 — 130 
Liabilities:   
Interest rate derivatives$— $3,170 $— $3,170 
Loan level derivatives— 108,963 — 108,963 
Risk participation-in agreements— 31 — 31 
Foreign exchange contracts— 112 — 112 
As of December 31, 2016, the fair value of the foreign exchange contracts was nominal. As of December 31, 2016, the Company held no risk participation-in agreements.
Investment Securities Available-for-Sale
The fair value of investment securities is based principally on market prices and dealer quotes received from third-party and nationally-recognized pricing services for identical investment securities such as U.S. Treasury and agency securities. The Company's marketable equity securities are priced this way and are included in Level 1. These prices are validated by comparing the primary pricing source with an alternative pricing source when available. When quoted market prices for identical securities are unavailable, the Company uses market prices provided by independent pricing services based on recent trading activity and other observable information, including but not limited to market interest-rate curves, referenced credit spreads and estimated prepayment speeds, where applicable. These investments include GSE debentures, GSE mortgage-related securities, SBA commercial loan asset backed securities, corporate debt securities,obligations, municipal obligations and trust preferred securities, all of which are included in Level 2. As of September 30, 2017March 31, 2023 $32.0 million of investment securities available-for-sale are included in Level 3 within the investment portfolio. The composition of these assets are primarily comprised of subordinated debt of local banks and private placement municipal securities. Of these securities, approximately $16.5 million are private placement municipal Bond Anticipation Notes. As of December 31, 2016, no2022, none of the investment securities were valued using pricing models included in Level 3.
Additionally, management reviews changes in fair value from period to period and performs testing to ensure that prices received from the third parties are consistent with management's expectation of the market. Changes in the prices obtained from the pricing service are analyzed from month to month, taking into consideration changes in market conditions including changes in mortgage spreads, changes in U.S. Treasury security yields and changes in generic pricing of 15-year and 30-year securities. Additional analysis may include a review of prices provided by other independent parties, a yield analysis, a review of average life changes using Bloomberg analytics and a review of historical pricing for a particular security.
Derivatives and Hedging Instruments
The fair values for the interest-rate swap assets and liabilities,value of interest rate derivatives designated as hedging instruments, loan level derivatives, risk participation agreements (RPA in/out), and foreign exchange derivativescontracts represent a Level 2 valuation and are based on settlement values adjusted for credit risks associated with the counterparties and the Company and observable market interest rate curves and foreign exchange rates where applicable. Credit risk adjustments consider factors such as the likelihood of default by the Company and its counterparties, its net exposures and remaining contractual life. To date, the Company has not realized any
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
losses due to a counterparty's inability to pay any net uncollateralized position. Refer also to Note 8, "Derivatives and Hedging Activities."
There were no transfers between levels for assets and liabilities recorded at fair value on a recurring basis duringat March 31, 2023 and December 31, 2022, respectively.
The following tables summarize information about significant unobservable inputs related to the threeCompany's categories of Level 3 financial assets and nine months ended September 30, 2017liabilities measured on a recurring basis.
Quantitative Information About Level 3 Fair Value Measurements - Recurring Basis
Financial InstrumentEstimated Fair ValueValuation Technique(s)Significant Unobservable InputsRange of InputsWeighted Average
(In Thousands)
March 31, 2023
Assets
Municipal obligations$19,956 Discounted Cash FlowDiscount Rate from Bloomberg BVAL0.0%-3.3%1.02 %
Corporate debt obligations9,727 Observable BidsBloomberg TRACE
Corporate debt obligations2,331 Discounted Cash FlowDiscount Rate from Bloomberg/BVAL5.14 %5.14 %
The following table summarizes the changes in estimated fair value for all assets and 2016, respectively.liabilities measured at estimated fair value on a recurring basis using significant unobservable inputs (Level 3).

Changes in Estimated Fair Value of Level 3 Financial Assets and Liabilities - Recurring Basis
Three Months Ended March 31, 2023
(In Thousands)
Municipal obligationsCorporate debt obligations
Beginning balance$— $— 
Purchases1,075 — 
Included in earnings— — 
Included in comprehensive income— — 
Transfers in18,881 12,058 
Transfers out— — 
Maturity and settlements— — 
Ending balance$19,956 $12,058 
50
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

Assets and Liabilities Recorded at Fair Value on a Non-Recurring Basis
Assets and liabilities measured at fair value on a non-recurring basis are summarized below at the dated indicated:
Carrying Value as of September 30, 2017 Carrying Value as of March 31, 2023
Level 1 Level 2 Level 3 Total Level 1Level 2Level 3Total
(In Thousands) (In Thousands)
Assets measured at fair value on a non-recurring basis:       Assets measured at fair value on a non-recurring basis:    
Collateral-dependent impaired loans and leases$
 $
 $32,800
 $32,800
Collateral-dependent impaired loans and leases$— $— $6,104 $6,104 
OREO
 
 3,235
 3,235
Repossessed assets
 1,163
 
 1,163
Repossessed assets— 508 — 508 
Total assets measured at fair value on a non-recurring basis$
 $1,163
 $36,035
 $37,198
Total assets measured at fair value on a non-recurring basis$— $508 $6,104 $6,612 
Carrying Value as of December 31, 2016 Carrying Value as of December 31, 2022
Level 1 Level 2 Level 3 Total Level 1Level 2Level 3Total
(In Thousands) (In Thousands)
Assets measured at fair value on a non-recurring basis:       Assets measured at fair value on a non-recurring basis:    
Collateral-dependent impaired loans and leases$
 $
 $27,282
 $27,282
Collateral-dependent impaired loans and leases$— $— $779 $779 
OREO
 
 618
 618
Repossessed assets
 781
 
 781
Repossessed assets— 408 — 408 
Total assets measured at fair value on a non-recurring basis$
 $781
 $27,900
 $28,681
Total assets measured at fair value on a non-recurring basis$— $408 $779 $1,187 
Collateral-Dependent Impaired Loans and Leases
For nonperforming loans and leases where the credit quality of the borrower has deteriorated significantly, fair values of the underlying collateral were estimated using purchase and sales agreements (Level 2), or comparable sales or recent appraisals (Level 3), adjusted for selling costs and other expenses.
Other Real Estate Owned ("OREO")
The Company records OREO at the lower of cost or fair value. In estimating fair value, the Company utilizes purchase and sales agreements (Level 2) or comparable sales, recent appraisals or cash flows discounted at an interest rate commensurate with the risk associated with these cash flows (Level 3), adjusted for selling costs and other expenses. As of March 31, 2023 and December 31, 2022, the Company did not record any OREO.
Repossessed Assets
Repossessed assets are carried at estimated fair value less costs to sell based on auction pricing (Level 2).
The table below presents quantitative information about significant unobservable inputs (Level 3) for assets measured at fair value on a recurringnon-recurring basis at the dates indicated.
 Fair Value Valuation Technique
 At September 30, 2017 At December 31, 2016  
 (Dollars in Thousands)  
Collateral-dependent impaired loans and leases$32,800
 $27,282
 
Appraisal of collateral (1)
Other real estate owned3,235
 618
 
Appraisal of collateral (1)
Fair ValueValuation Technique
At March 31,
2023
At December 31, 2022
 (Dollars in Thousands)
Collateral-dependent impaired loans and leases$6,104 $779 
Appraisal of collateral (1)

(1) Fair value is generally determined through independent appraisals of the underlying collateral. The Company may also use another available source of collateral assessment to determine a reasonable estimate of the fair value of the collateral. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of the unobservable inputs used may vary but is generally 0% - 10% on the discount for costs to sell and 0% - 15% on appraisal adjustments.


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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

Summary of Estimated Fair Values of Financial Instruments
The following table presents the carrying amount, estimated fair value, and placement in the fair value hierarchy of the Company's financial instruments at the dates indicated. This table excludes financial instruments for which the carrying amount approximates fair value. Financial assets for which the fair value approximates carrying value include cash and cash equivalents, restricted equity securities, and accrued interest receivable. Financial liabilities for which the fair value approximates carrying value include non-maturity deposits, short-term borrowings, and accrued interest payable.
   Fair Value Measurements at March 31, 2023
 Carrying
Value
Estimated
Fair Value
Level 1
Inputs
Level 2
Inputs
Level 3
Inputs
 (In Thousands)
Financial assets:     
Loans and leases, net$9,126,100 $8,844,334 $— $— $8,844,334 
Financial liabilities:    
Certificates of deposits2,345,335 2,323,833 — 2,323,833 — 
Borrowed funds1,630,102 1,623,901 — 1,626,143 — 
     Fair Value Measurements
 Carrying
Value
 Estimated
Fair Value
 Level 1
Inputs
 Level 2
Inputs
 Level 3
Inputs
 (In Thousands)
At September 30, 2017         
Financial assets:         
Investment securities held-to-maturity:  

      
GSE debentures$38,622
 $38,072
 $
 $38,072
 $
GSE MBSs14,788
 14,643
 
 14,643
 
Municipal obligations53,828
 54,013
 
 54,013
 
Foreign government obligations500
 492
 
 
 492
Loans held-for-sale2,973
 2,973
 
 2,973
 
Loans and leases, net5,574,027
 5,480,446
 
 
 5,480,446
Restricted equity securities62,135
 62,135
 
 
 62,135
Loan level derivatives9,975
 9,975
 
 9,975
 
Risk participation-out agreements49
 49
 
 49
 
Foreign exchange contracts22
 22
 
 22
 
Financial liabilities:         
Certificates of deposit1,167,329
 1,164,618
 
 1,164,618
 
Borrowed funds985,895
 967,643
 
 967,643
 
Loan level derivatives9,975
 9,975
 
 9,975
 
Risk participation-in agreements14
 14
 
 14
 
Foreign exchange contracts14
 14
 
 14
 
   Fair Value Measurements at December 31, 2022
 Carrying
Value
Estimated
Fair Value
Level 1
Inputs
Level 2
Inputs
Level 3
Inputs
 (In Thousands)
Financial assets:     
Loans and leases, net7,545,906 7,450,654 — — 7,450,654 
Financial liabilities: 
Certificates of deposit1,238,287 1,217,024 — 1,217,024 — 
Borrowed funds1,432,652 1,431,716 — 1,431,716 — 

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

     Fair Value Measurements
 Carrying
Value
 Estimated
Fair Value
 Level 1
Inputs
 Level 2
Inputs
 Level 3
Inputs
 (In Thousands)
At December 31, 2016         
Financial assets:         
Investment securities held-to-maturity:         
GSE debentures$14,735
 $14,101
 $
 $14,101
 $
GSE MBSs17,666
 17,479
 
 17,479
 
Municipal obligations54,219
 53,204
 
 53,204
 
Foreign government obligations500
 487
 
 
 487
Loans held-for-sale13,078
 13,078
 
 13,078
 
Loans and leases, net5,345,198
 5,195,312
 
 
 5,195,312
Restricted equity securities64,511
 75,589
 
 
 75,589
Loan level derivatives9,738
 9,738
 
 9,738
 
Risk participation-out agreements20
 20
 
 20
 
Financial liabilities:         
Certificates of deposit1,041,022
 1,042,653
 
 1,042,653
 
Borrowed funds1,044,086
 1,030,753
 
 1,030,753
 
Loan level derivatives9,738
 9,738
 
 9,738
 
Investment Securities Held-to-Maturity
The fair values of certain investment securities held-to-maturity are estimated using market prices provided by independent pricing services based on recent trading activity and other observable information, including but not limited to market interest-rate curves, referenced credit spreads and estimated prepayment speeds where applicable. These investments include GSE debentures, GSE MBSs, and municipal obligations, all of which are included in Level 2. Additionally, fair values of foreign government obligations are estimated using pricing models and are considered to be Level 3.
Loans Held-for-Sale
Fair value is measured using quoted market prices when available. These assets are typically categorized as Level 1. If quoted market prices are not available, comparable market values may be utilized. These assets are typically categorized as Level 2.
Loans and Leases
The fair values of performing loans and leases was estimated by segregating the portfolio into its primary loan and lease categories—commercial real estate mortgage, multi-family mortgage, construction, commercial, equipment financing, condominium association, residential mortgage, home equity and other consumer. These categories were further disaggregated based upon significant financial characteristics such as type of interest rate (fixed / variable) and payment status (current / past-due). TheUsing the exit price valuation method, the Company discounts the contractual cash flows for each loan category using interest rates currently being offered for loans with similar terms to borrowers of similar quality and incorporates estimates of future loan prepayments. This method of estimating fair value does not incorporate the exit price concept of fair value.
Restricted Equity Securities
The fair values of certain restricted equity securities are estimated using observable inputs adjusted for other unobservable information, including but not limited to probability assumptions and similar discounts where applicable. These restricted equity securities are considered to be Level 3.

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

Deposits
The fair values of deposit liabilities with no stated maturity (demand, NOW, savings and money market savings accounts) are equal to the carrying amounts payable on demand. The fair value of certificates of deposit represents contractual cash flows discounted using interest rates currently offered on deposits with similar characteristics and remaining maturities. The fair value estimates for deposits do not include the benefit that results from the low-cost funding provided by the Company's core deposit relationships (deposit-based intangibles).
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
Borrowed Funds
The fair value of federal funds purchased is equal to the amount borrowed. The fair value of FHLBBFHLB advances and repurchase agreements represents contractual repayments discounted using interest rates currently available for borrowings with similar characteristics and remaining maturities. The fair values reported for retail repurchase agreements are based on the discounted value of contractual cash flows. The discount rates used are representative of approximate rates currently offered on borrowings with similar characteristics and maturities. The fair values reported for subordinated deferrable interest debentures are based on the discounted value of contractual cash flows. The discount rates used are representative of approximate rates currently offered on instruments with similar terms and maturities.
(12) Commitments and Contingencies
Off-Balance Sheet Financial Instruments
The Company is party to off-balance sheet financial instruments in the normal course of business to meet the financing needs of its customers and to reduce its own exposure to fluctuations in interest rates. These financial instruments include loan commitments, standby and commercial letters of credits,credit, and loan level derivatives. According to GAAP, these financial instruments are not recorded in the financial statements until they are funded or related fees are incurred or received.
The contract amounts reflect the extent of the involvement the Company has in particular classes of these instruments. Such commitments involve, to varying degrees, elements of credit risk and interest-rate risk in excess of the amount recognized in the consolidated balance sheets. The Company's exposure to credit loss in the event of non-performance by the counterparty is represented by the fair value of the instruments. The Company uses the same policies in making commitments and conditional obligations as it does for on-balance sheet instruments.

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

Financial instruments with off-balance-sheet risk at the dates indicated follow:
At September 30, 2017
At December 31, 2016 At March 31, 2023At December 31, 2022
(In Thousands) (In Thousands)
Financial instruments whose contract amounts represent credit risk: 
 Financial instruments whose contract amounts represent credit risk:  
Commitments to originate loans and leases: 
 Commitments to originate loans and leases:  
Commercial real estate$95,484

$27,750
Commercial real estate$214,390 $414,217 
Commercial89,036

71,716
Commercial242,928 291,188 
Residential mortgage19,672

28,179
Residential mortgage10,788 14,036 
Unadvanced portion of loans and leases526,532

580,416
Unadvanced portion of loans and leases1,283,463 1,202,738 
Unused lines of credit: 
 Unused lines of credit:  
Home equity383,973

340,682
Home equity751,717 700,201 
Other consumer14,119

13,157
Other consumer105,416 97,313 
Other commercial306

208
Other commercial478 526 
Unused letters of credit:

 Unused letters of credit: 
Financial standby letters of credit11,270

11,720
Financial standby letters of credit14,611 13,584 
Performance standby letters of credit668

516
Performance standby letters of credit31,202 31,330 
Commercial and similar letters of credit855

785
Commercial and similar letters of credit4,817 2,619 
Interest rate derivativesInterest rate derivatives225,000 150,000 
Loan level derivatives (Notional principal amounts):




Loan level derivatives (Notional principal amounts):
Receive fixed, pay variable465,470

383,780
Receive fixed, pay variable1,773,735 1,489,709 
Pay fixed, receive variable465,470

383,780
Pay fixed, receive variable1,773,735 1,489,709 
Risk participation-out agreements28,858

16,961
Risk participation-out agreements511,464 393,624 
Risk participation-in agreements3,825
 
Risk participation-in agreements74,757 75,223 
Foreign exchange contracts (Notional amounts):




Foreign exchange contracts (Notional amounts):
Buys foreign currency, sells U.S. currency1,200

195
Buys foreign currency, sells U.S. currency2,631 2,383 
Sells foreign currency, buys U.S. currency1,208

195
Sells foreign currency, buys U.S. currency2,650 2,400 
Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require the payment of a fee by the customer. Since some of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer's creditworthiness on a case-by-case basis. The amount of collateral obtained, if any, is based on management's credit evaluation of the borrower.
Standby and commercial letters of creditscredit are conditional commitments issued by the Company to guarantee performance of a customer to a third party. These standby and commercial letters of credit are primarily issued to support the financing needs of the Company's commercial customers. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loans to customers.
From time to time, the Company enters into loan level derivatives, risk participation agreements or foreign exchange contracts with commercial customers and third-party financial institutions. These derivatives allow the Company to offer long-term fixed-rate commercial loans while mitigating the interest-rate or foreign exchange risk of holding those loans. In a loan level derivative transaction, the Company lends to a commercial customer on a floating-rate basis and then enters into ana loan level derivative with that customer. Concurrently, the Company enters into offsetting swaps with a third-party financial institution, effectively minimizing its net interest-rate risk exposure resulting from such transactions.
The fair value of derivative assets and liabilities was $10.0 million and $10.0 million, respectively, as of September 30, 2017. The fair value of derivative assets and liabilities was $9.8 million and $9.7 million, respectively, as of December 31, 2016.

these derivatives are presented in Note 8.
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
At and for the Nine Months Ended September 30, 2017 and 2016

The fair value of foreign exchange assets and liabilities was $22.0 thousand and $14.0 thousand, respectively, as of September 30, 2017. The fair value of foreign exchange assets and liabilities was nominal as of December 31, 2016.
Lease Commitments
The Company leases certain office space under various noncancellable operating leases.leases as well as certain other assets. These leases have original terms ranging from 5 years1 year to over 25 years. Certain leases contain renewal options and escalation clauses which can increase rental expenses based principally on the consumer price index and fair market rental value provisions. All of the Company's current outstanding leases are classified as operating leases.
The Company considered the following criteria when determining whether a contract contains a lease, the existence of an identifiable asset and the right to obtain substantially all of the economic benefits from use of the asset through the period. The Company uses the FHLB classic advance rates available as of the lease's start dates as the discount rate to determine the net present value of the remaining lease payments.
Total lease commitments increased from $19.5 million as of December 31, 2022 to $31.4 million as of March 31, 2023. The increase is due to the addition of 12 leases for PCSB Bank branch locations.
Three Months Ended March 31, 2023Three Months Ended March 31, 2022
(In Thousands)
The components of lease expense was as follows:
Operating lease cost$2,112 $1,567 
Supplemental cash flow information related to leases was as follows:
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases$2,353 $1,638 
Right-of-use assets obtained in exchange for new lease obligations acquired from PCSB Bank:
Operating leases assets$8,880 $— 
Operating leases liabilities10,697 — 
At March 31, 2023At December 31, 2022
(In Thousands)
Supplemental balance sheet information related to leases was as follows:
Operating Leases
Operating lease right-of-use assets$30,067 $19,484 
Operating lease liabilities31,373 19,484 
Weighted Average Remaining Lease Term
Operating leases9.387.39
Weighted Average Discount Rate
Operating leases4.0 %3.5 %

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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
A summary of future minimum rental payments under such leases at the dates indicated follows:
 Minimum Rental Payments
 (In Thousands)
  
Remainder of 2017$1,325
Year ending: 
20184,921
20194,053
20203,497
20212,988
20222,743
Thereafter10,138
Total$29,665
Minimum Rental Payments
March 31, 2023
 (In Thousands)
Remainder of 2023$5,970 
Year ending:
20246,744 
20255,276 
20263,838 
20272,859 
20281,916 
Thereafter9,512 
Total$36,115 
Less imputed interest(4,742)
Present value of lease liability$31,373 
Certain leases contain escalation clauses for real estate taxes and other expenditures, which are not included above. Total rental expense was $1.4The total real estate taxes were $0.7 million and $1.3$0.5 million for the three months ended September 30, 2017March 31, 2023 and 2016,2022, respectively. Total other expenditures were $0.1 million for both the three months ended March 31, 2023 and 2022, respectively. Total rental expense was $4.2$2.1 million and $3.9$1.5 million for the ninethree months ended September 30, 2017March 31, 2023 and 2016,2022, respectively. The increase was due to the opening of a new branch in Danvers, Massachusetts for First Ipswich Bank, and the relocation of a branch in Brookline, Massachusetts for Brookline Bank.
Legal Proceedings
In the normal course of business, there are various outstanding legal proceedings. In the opinion of management, after consulting with legal counsel, the consolidated financial position and results of operations of the Company are not expected to be affected materially by the outcome of such proceedings.
(13) Revenue from Contracts with Customers
Overview
Revenue from contracts with customers in the scope of ASC 606 ("Topic 606") is measured based on the consideration specified in the contract with a customer and excludes amounts collected on behalf of third parties. The Company recognizes revenue from contracts with customers when it satisfies its performance obligations.
The Company’s performance obligations are generally satisfied as services are rendered and can either be satisfied at a point in time or over time. Unsatisfied performance obligations at the report date are not material to our consolidated financial statements.
In certain cases, other parties are involved with providing services to our customers. If the Company is a principal in the transaction (providing services itself or through a third party on its behalf), revenues are reported based on the gross consideration received from the customer and any related expenses are reported in gross noninterest expense. If the Company is an agent in the transaction (referring to another party to provide services), the Company reports its net fee or commission retained as revenue.
A substantial portion of the Company’s revenue is specifically excluded from the scope of Topic 606. This exclusion is associated with financial instruments, including interest income on loans and investment securities, in addition to loan derivative income and gains on loan and investment sales. For the revenue that is in-scope of Topic 606, the following is a description of principal activities from which the Company generates its revenue from contracts with customers, separated by the timing of revenue recognition.
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BROOKLINE BANCORP, INC. AND SUBSIDIARIES
Notes to Unaudited Consolidated Financial Statements (Continued)
Revenue Recognized at a Point in Time
The Company recognizes revenue that is transactional in nature and such revenue is earned at a point in time. Revenue that is recognized at a point in time includes card interchange fees (fee income related to debit card transactions), ATM fees, wire transfer fees, overdraft charge fees, and stop-payment and returned check fees. Additionally, revenue is collected from loan fees, such as letters of credit, line renewal fees and application fees. Such revenue is derived from transactional information and is recognized as revenue immediately as the transactions occur or upon providing the service to complete the customer’s transaction.
Revenue Recognized Over Time
The Company recognizes revenue over a period of time, generally monthly, as services are performed and performance obligations are satisfied. Such revenue includes commissions on investments, insurance sales and service charges on deposit accounts. Fee revenue from service charges on deposit accounts represents the service charges assessed to customers who hold deposit accounts at the Banks.
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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Forward-Looking Statements
Certain statements contained in this Quarterly Report on Form 10-Q that are not historical facts may constitute forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and are intended to be covered by the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements involve risks and uncertainties. These statements, which are based on certain assumptions and describe Brookline Bancorp, Inc.’s (the “Company’s”) future plans, strategies and expectations, can generally be identified by the use of the words “may,” “will,” “should,” “could,” “would,” “plan,” “potential,” “estimate,” “project,” “believe,” “intend,” “anticipate,” “expect,” “target” and similar expressions. These statements include, among others, statements regarding the Company’s intent, belief or expectations with respect to economic conditions, trends affecting the Company’s financial condition or results of operations, and the Company’s exposure to market, liquidity, interest-rate and credit risk.
Forward-looking statements are based on the current assumptions underlying the statements and other information with respect to the beliefs, plans, objectives, goals, expectations, anticipations, estimates and intentions of management and the financial condition, results of operations, future performance and business are only expectations of future results. Although the Company believes that the expectations reflected in the Company’s forward-looking statements are reasonable, the Company’s

actual results could differ materially from those projected in the forward-looking statements as a result of, among other important factors, adverse conditionsthe Company’s ability to achieve the synergies and value creation contemplated in connection with the recently completed acquisition of PCSB Financial Corporation ("PCSB"); turbulence in the capital and debt markets; changes in interest rates; competitive pressures from other financial institutions; the effects of weakness in general economic conditions (including inflation and concerns about liquidity) on a national basis or in the local markets in which the Company operates, includingoperates; changes which adversely affect borrowers’ abilityin consumer behavior due to servicechanging political, business and repay their loans and leases;economic conditions, or legislative or regulatory initiatives; changes in the value of securities and other assets in the Company’s investment portfolio; changesincreases in loan and lease default and charge-off rates; the adequacy of allowances for loan and lease losses; decreases in deposit levels necessitating increasedthat necessitate increases in borrowing to fund loans and investments; operational risks including, but not limited to, cybersecurity incidents, fraud, natural disasters, and natural disaster;future pandemics; changes in government regulation; the possibility that future credit losses may be higher than currently expected due to changes in economic assumptions and adverse economic developments; the risk that goodwill and intangibles recorded in the Company’s financial statements will become impaired; and changes in assumptions used in making such forward-looking statements, as well asstatements; and the other risks and uncertainties detailed in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 20162022 and other filings submitted to the Securities and Exchange Commission.Commission ("SEC"). Forward-looking statements speak only as of the date on which they are made. The Company does not undertake any obligation to update any forward-looking statement to reflect circumstances or events that occur after the date the forward-looking statements are made.
Introduction
Brookline Bancorp, Inc., a Delaware corporation, operates as a multi-bank holding company for Brookline Bank and its subsidiaries; Bank Rhode Island and its subsidiaries ("BankRI"); First IpswichPCSB Bank and its subsidiaries ("First Ipswich"); andsubsidiaries; Brookline Securities Corp.Corp; and Clarendon Private, LLC.
As a commercially-focused financial institution with 5164 full-service banking offices throughout greater Boston, the north shore of Massachusetts, and Rhode Island and New York, the Company, through Brookline Bank, BankRI and First Ipswich (the “Banks”PCSB Bank (collectively referred to as the "Banks"), offers a wide range of commercial, business and retail banking services, including a full complement of cash management products, foreign exchange services, on-line and mobile banking services, consumer and residential loans and investment advisory services, designed to meet the financial needs of small- to mid-sized businesses and individuals throughout central New England. Specialty lending activities includeEngland and the lower Hudson Valley in New York. The Banks and their subsidiaries lend primarily in all New England states and New York, with the exception of equipment financing, primarily27.1% of which is in the greater New York and New Jersey metropolitan area.area and 72.9% of which is in other areas in the United States of America as of March 31, 2023. Clarendon Private is a registered investment advisor with the SEC. Through Clarendon Private, the Company offers a wide range of wealth management services to individuals, families, endowments and foundations to help these clients meet their long-term financial goals.
The Company focuses its business efforts on profitably growing its commercial lending businesses, both organically and through acquisitions. The Company’s customer focus, multi-bank structure, and risk management are integral to its organic growth strategy and serve to differentiate the Company from its competitors. As full-service financial institutions, the Banks and their subsidiaries focus their efforts on developing and deepening long-term banking relationships with qualified customers through a full complement of products, and excellent customer service, and strong risk management.
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The Company manages the Banks under a uniform strategic objectives,objective, with one set of uniform policies consistently applied by one executive management team. Within this environment, the Company believes that the ability to make customer decisions locally enhances management's motivation, service levels and, as a consequence, the Company's financial results. As such, while most back-office functions are consolidated at the holding company level, branding and decision-making, including credit decisions and pricing, remain largely local in order to better meet the needs of bank customers and further motivate the Banks’ commercial, business and retail bankers. These credit decisions, at the local level, are executed through corporate policies overseen by the Company's credit department.
The competition for loans and leases and deposits remains intense. While the economy has improved in 2017, the Company expects the operating environment to remain challenging. The volume of loan and lease originations and loan and lease losses will depend, to a large extent, on how the economy performs.strong. Loan and lease growth and deposit growth are also greatly influenced by the rate-setting actions of the Board of Governors of the Federal Reserve System (“FRB”(the "FRB"). A sustained, low interestBased on management's scenario analysis of deposit sensitivity to the current rate environment with a flatand customer's demand for non-depository investment alternatives, it is expected there could be further deposit mix migration and increased deposit sensitivity to interest rate curve mayrates which will negatively impact on the Company's yieldsnet interest income and net interest margin. WhileIt is management's expectation that even should interest rates rise, margin may compress given the companyabove factors as rates on deposit products continue to "catch up" with the swift rise in short term rates over the last year.
Management expects pressure on the net interest margin to continue for a quarter or two after the Federal Reserve stops increasing rates, after which the net interest margin is slightly asset sensitiveexpected to stabilize and then increase as loans continue to reprice into the higher rate environment faster than time deposits and other funding sources. Net interest income models, using a projected flat balance sheet with stable deposit balances and an average sensitivity of deposit rates of approximately 39% to market rates, short term increase in rates will positively affect the Company's net interest income, net interest spread, and net interest margin.
As discussed above, should benefitreality materially deviate from risingthe above assumptions, changes in interest rates these rate increases could also precipitate a change in the mix and volume of the Company's deposits and loans. The future operating results of the Company will depend on its ability to maintain or increase the current net interest margin, while minimizing exposure toincome, manage credit risk, along with increasingincrease sources of non-interest income, while controlling the growth ofmanaging non-interest expenses.
The Company and the Banks are supervised, examined and regulated by the FRB. As a Massachusetts-chartered savings bank and trust company, respectively, Brookline Bank and First Ipswich areis also subject to regulation under the laws of the Commonwealth of Massachusetts and the jurisdiction of the Massachusetts Division of Banks. As a Rhode Island-chartered financial institution, BankRI is also subject to regulation under the laws of the State of Rhode Island and the jurisdiction of the Banking Division of the Rhode Island Department of Business Regulation. As a New York-chartered commercial bank, PCSB Bank is subject to regulation, supervision and examination the New York State Department of Financial Services. The FDIC continues to insure each of the Banks’ deposits up to $250,000 per depositor. Additionally, asAs previously disclosed, on July 31, 2019, Brookline Bank converted its charter from a Massachusetts savings bank to a Massachusetts-chartered savings bank, Brookline Bank is also insured bytrust company and ended its membership in the Depositors Insurance Fund (“DIF”(the “DIF”), a private industry-sponsored company. Thefund which insures Massachusetts-chartered bank deposit balances in excess of federal deposit insurance coverage. Brookline Bank’s growth in deposit size necessitated Brookline Bank’s withdrawal from the DIF insures savings bankand the concurrent charter conversion of Brookline Bank. Brookline Bank’s deposit accounts will continue to be insured by the deposit insurance fund of the FDIC up to applicable limits. Term deposits in excess of the FDIC insurance limits. As such, Brooklinecoverage as of July 31, 2019 will continue to be insured by the DIF until they reach maturity.
On January 1, 2023, the Company completed its previously announced acquisition (the “merger”) of PCSB. Pursuant to the merger agreement, each share of PCSB common stock outstanding at the effective time of the merger was converted into the right to receive, at the holder’s election, either $22.00 in cash consideration or 1.3284 shares of Company common stock for each share of PCSB common stock, subject to allocation procedures to ensure that 60% of the outstanding shares of PCSB common stock was converted to Company common stock. Subsequent to the acquisition, PCSB Bank, offers 100% insurance on all depositsoperates as a resultseparate subsidiary of a combinationthe Company and has 15 banking offices throughout the Lower Hudson Valley of insurance from the FDIC and the DIF.New York State.
The Company’s common stock is traded on the Nasdaq Global Select MarketSM under the symbol “BRKL.”

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Selected Financial Data
The following is based in part on, and should be read in conjunction with, the consolidated financial statements and accompanying notes, and other information appearing elsewhere in this Quarterly Report on Form 10-Q.
At and for the Three Months Ended
March 31,December 31,September 30,June 30,March 31,
20232022202220222022
(Dollars in Thousands, Except Per Share Data)
PER COMMON SHARE DATA
Earnings per share - Basic$0.09 $0.39 $0.39 $0.33 $0.32 
Earnings per share - Diluted0.09 0.39 0.39 0.33 0.32 
Book value per share (end of period)13.14 12.91 12.54 12.63 12.65 
Tangible book value per share (end of period) (1)10.08 10.80 10.43 10.51 10.56 
Dividends paid per common share0.135 0.135 0.130 0.130 0.125 
Stock price (end of period)10.50 14.15 11.65 13.31 15.82 
PERFORMANCE RATIOS (2)
Net interest margin (taxable equivalent basis)3.36 %3.81 %3.80 %3.56 %3.49 %
Return on average assets0.27 %1.34 %1.40 %1.18 %1.16 %
Return on average tangible assets (1)0.28 %1.37 %1.43 %1.21 %1.18 %
Return on average stockholders' equity2.61 %12.09 %12.29 %10.32 %9.91 %
Return on average tangible stockholders' equity (1)3.43 %14.48 %14.72 %12.39 %11.84 %
Dividend payout ratio (1)158.33 %34.94 %33.07 %39.81 %39.28 %
Efficiency ratio (3)65.44 %53.01 %52.98 %56.95 %56.37 %
ASSET QUALITY RATIOS
Net loan and lease charge-offs as a percentage of average loans and leases (annualized)0.02 %0.02 %(0.01)%0.07 %0.11 %
Nonperforming loans and leases as a percentage of total loans and leases0.31 %0.19 %0.24 %0.28 %0.35 %
Nonperforming assets as a percentage of total assets0.25 %0.17 %0.21 %0.25 %0.31 %
Total allowance for loan and lease losses as a percentage of total loans and leases1.31 %1.29 %1.27 %1.28 %1.32 %
CAPITAL RATIOS
Stockholders' equity to total assets10.11 %10.80 %11.08 %11.38 %11.37 %
Tangible equity ratio (1)7.94 %9.20 %9.39 %9.65 %9.67 %
FINANCIAL CONDITION DATA
Total assets$11,522,485 $9,185,836 $8,695,708 $8,514,230 $8,633,736 
Total loans and leases9,246,965 7,644,388 7,421,304 7,291,912 7,223,130 
Allowance for loan and lease losses120,865 98,482 94,169 93,188 95,463 
Investment securities available-for-sale1,067,032 656,766 675,692 717,818 730,562 
Goodwill and identified intangible assets271,302 162,208 162,329 162,449 162,569 
Total deposits8,456,462 6,522,146 6,735,605 6,894,457 7,094,378 
Total borrowed funds1,630,102 1,432,652 758,768 478,200 392,897 
Stockholders' equity1,165,066 992,125 963,618 968,496 981,935 
(Continued)
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Table of Contents
 At and for the Three Months Ended
 September 30, June 30, March 31, December 31, September 30,
 2017 2017 2017 2016 2016
 (Dollars in Thousands, Except Per Share Data)
PER COMMON SHARE DATA         
Earnings per share - Basic$0.20
 $0.20
 $0.19
 $0.19
 $0.19
Earnings per share - Diluted0.20
 0.20
 0.19
 0.19
 0.19
Book value per share (end of period)10.52
 10.42
 10.00
 9.88
 9.90
Tangible book value per share (end of period) (1)8.63
 8.52
 7.93
 7.81
 7.81
Dividends paid per common share0.09
 0.09
 0.09
 0.09
 0.09
Stock price (end of period)15.50
 14.60
 15.65
 16.40
 12.19
          
PERFORMANCE RATIOS (2)         
Net interest margin (taxable equivalent basis)3.57% 3.59% 3.53% 3.40% 3.48%
Return on average assets0.92% 0.91% 0.83% 0.83% 0.86%
Return on average tangible assets (1)0.94% 0.93% 0.85% 0.85% 0.88%
Return on average stockholders' equity7.64% 7.76% 7.58% 7.59% 7.83%
Return on average tangible stockholders' equity (1)9.31% 9.58% 9.55% 9.60% 9.94%
Dividend payout ratio (1)44.90% 46.28% 47.23% 47.80% 46.60%
Efficiency ratio (3)56.37% 57.93% 48.92% 56.92% 57.89%
          
ASSET QUALITY RATIOS         
Net loan and lease charge-offs as a percentage of average loans and leases (annualized)0.14% 0.17% 0.07% 0.62% 0.04%
Nonperforming loans and leases as a percentage of total loans and leases0.71% 0.76% 0.83% 0.74% 0.70%
Nonperforming assets as a percentage of total assets0.66% 0.71% 0.73% 0.64% 0.61%
Total allowance for loan and lease losses as a percentage of total loans and leases1.16% 1.17% 1.21% 0.99% 1.10%
Allowance for loan and lease losses related to originated loans and leases as a percentage of originated loans and leases (1)1.20% 1.20% 1.25%
1.03%
1.15%
          
CAPITAL RATIOS         
Stockholders' equity to total assets12.04% 11.95% 10.83% 10.80% 10.91%
Tangible equity ratio (1)10.09% 9.99% 8.79% 8.73% 8.82%
          
FINANCIAL CONDITION DATA         
Total assets$6,686,284
 $6,658,067
 $6,497,721
 $6,438,129
 $6,380,312
Total loans and leases5,639,440
 5,537,406
 5,461,779
 5,398,864
 5,332,300
Allowance for loan and lease losses65,413
 64,521
 66,133
 53,666
 58,892
Investment securities available-for-sale522,910
 540,976
 528,433
 523,634
 524,295
Investment securities held-to-maturity107,738
 108,963
 100,691
 87,120
 77,094
Goodwill and identified intangible assets144,453
 144,972
 145,491
 146,023
 146,644
Total deposits4,805,683
 4,709,419
 4,651,903
 4,611,076
 4,564,906
         (Continued)
          
          

At and for the Three Months Ended
At and for the Three Months EndedMarch 31,December 31,September 30,June 30,March 31,
September 30, June 30, March 31, December 31, September 30,20232022202220222022
2017 2017 2017 2016 2016(Dollars in Thousands, Except Per Share Data)
(Dollars in Thousands, Except Per Share Data)
         
Total borrowed funds985,895
 1,066,643
 1,056,785
 1,044,086
 1,022,653
Stockholders' equity804,762
 795,618
 703,873
 695,544
 696,371
         
EARNINGS DATA         EARNINGS DATA
Net interest income$56,843
 $55,583
 $53,098
 $51,854
 $52,350
Net interest income$86,049 $80,030 $78,026 $71,867 $69,848 
Provision for credit losses2,911
 873
 13,402
 3,215
 2,215
Provision (credit) for credit lossesProvision (credit) for credit losses25,542 5,725 2,835 227 (164)
Non-interest income5,973
 4,477
 15,908
 5,430
 5,329
Non-interest income12,937 9,056 6,834 6,928 5,529 
Non-interest expense35,408
 34,795
 33,756
 32,607
 33,388
Non-interest expense64,776 47,225 44,959 44,871 42,487 
Net income15,366
 14,880
 13,445
 13,279
 13,617
Net income7,560 29,695 30,149 25,195 24,705 

(1) Refer to "Non-GAAP Financial Measures and Reconciliations to GAAP".


(2) All performance ratios are annualized and are based on average balance sheet amounts, where applicable.


(3) Efficiency ratio is calculated by dividing non-interest expense by the sum of non-interest income and net interest income.
Executive Overview
GrowthBalance Sheet
Total assets of $6.7increased $2.3 billion to $11.5 billion as of September 30, 2017 increased $248.2 million, or 5.1% on an annualized basis,March 31, 2023 from $9.2 billion as of December 31, 2016.2022. The increase was primarily driven by increases in loansthe acquisition of PCSB Bank.
Cash and leases.cash equivalents increased $103.4 million to $486.3 million as of March 31, 2023 from $383.0 million as of December 31, 2022.
Total investment securities increased $410.3 million to $1.1 billion as of March 31, 2023 from $656.8 million as of December 31, 2022.
Total loans and leases of $5.6increased $1.6 billion to $9.2 billion as of September 30, 2017 increased $240.6 million, or 5.9% on an annualized basis,March 31, 2023 from $7.6 billion as of December 31, 2016.2022. The Company's commercial loan portfolios, which are comprised of commercial real estate loans and commercial loans and leases, totaled $4.6$7.8 billion, or 81.8%83.9% of total loans and leases as of September 30, 2017,March 31, 2023, an increase of $200.3 million, or 6.1% on an annualized basis,$1.3 billion from $4.4$6.4 billion, or 81.8%84.0% of total loans and leases as of December 31, 2016.2022.
Paycheck Protection Program ("PPP") loans increased $0.2 million to $0.5 million as of March 31, 2023 from $0.3 million as of December 31, 2022, due to the acquisition of PCSB Bank.
Total deposits of $4.8increased $1.9 billion to $8.5 billion as of September 30, 2017 increased $194.6 million, or 5.6% on an annualized basis,March 31, 2023 from $4.6$6.5 billion as of December 31, 2016.2022. Core deposits, which include demand checking, NOW, money market and savings accounts, totaled $3.6$6.1 billion, or 75.7%72.3% of total deposits as of September 30, 2017,March 31, 2023, an increase of $68.3$827.3 million or 2.6% on an annualized basis, from $3.6$5.3 billion, or 77.4%81.0% of total deposits as of December 31, 2016.2022. Certificate of deposit balances totaled $1.4 billion, or 16.1% of total deposits as of March 31, 2023, an increase of $434.8 million from $928.1 million, or 14.2% of total deposits as of December 31, 2022. Brokered deposits totaled $1.0 billion, or 11.6% of total deposits as of March 31, 2023, an increase of $672.2 million from $0.3 billion, or 4.8% of total deposits as of December 31, 2022.
Total borrowed funds increased $197.5 million to $1.6 billion as of March 31, 2023 from $1.4 billion as of December 31, 2022.
Asset Quality
Nonperforming assets as of September 30, 2017March 31, 2023 totaled $44.4$29.0 million, or 0.66%0.25% of total assets, compared to $41.5$15.3 million, or 0.64%0.17% of total assets, as of December 31, 2016.2022. Net charge-offs for the three months ended September 30, 2017March 31, 2023 were $2.0$0.5 million, or 0.14%0.02% of average loans and leases on an annualized basis, compared to $0.5$1.9 million, or 0.04%0.11% of average loans and leases on an annualized basis, for the three months ended September 30, 2016. The increase in nonperforming loans and leases and nonperforming assets was primarily driven by two taxi medallion loans and two commercial loans that were placed on nonaccrual.March 31, 2022.
The ratio of the allowance for loan and lease losses to total loans and leases was 1.16%1.31% as of September 30, 2017,March 31, 2023, compared to 0.99%1.29% as of December 31, 2016. Excluding the loans acquired from BankRI and First Ipswich,2022.
The ratio of the allowance for loan and lease losses related to originatednonaccrual loans and leases as a percentage of the total originated loan and lease portfolio was 1.20%424.77% as of September 30, 2017,March 31, 2023, compared to 1.03%661.22% as of December 31, 2016. The Company continued to employ its historical underwriting methodology throughout the three month period ended September 30, 2017. Refer also to Note 5, "Allowance for Loan and Lease Losses."2022.
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Capital Strength
The Company is a "well-capitalized" bank holding company as defined in the FRB's Regulation Y. The Company's common equity Tier 1 Capital Ratiocapital ratio was 12.07%10.66% as of September 30, 2017,March 31, 2023, compared to 10.48%12.05% as of December 31, 2016.2022. The Company's Tier 1 Leverage Ratioleverage ratio was 10.45%8.78% as of September 30, 2017,March 31, 2023, compared to 9.16%10.26% as of December 31, 2016.2022. As of September 30, 2017,March 31, 2023, the Company's Tier 1 Risk-Based Capital Ratiorisk-based capital ratio was 12.38%10.76%, compared to 10.79%12.18% as of December 31,

2016. 2022. The Company's Total Risk-Based Capital Ratiorisk-based capital ratio was 14.92%12.85% as of September 30, 2017,March 31, 2023, compared to 13.20%14.44% as of December 31, 2016.2022.
The Company's ratio of stockholders' equity to total assets was 12.04%10.11% and 10.80% as of September 30, 2017March 31, 2023 and December 31, 2016,2022, respectively. The Company's tangible equity ratio was 10.09%7.94% and 8.73%9.20% as of September 30, 2017March 31, 2023 and December 31, 2016,2022, respectively. The increase in the ratio of stockholders' equity to total assets and the tangible equity ratio is due to the Company's new issuance in the amount of 5,951,250 shares of the Company’s common stock at a price to the public of $14.50 per share on May 2, 2017. Refer to “Stockholder's Equity and Dividends" below for further discussion.
Net Income
For the three months ended September 30, 2017,March 31, 2023, the Company reported net income of $15.4$7.6 million, or $0.20$0.09 per basic and diluted share, an increasea decrease of $1.7$17.1 million, or 17.1% on an annualized basis,69.4%, from $13.6net income of $24.7 million, or $0.19$0.32 per basic and diluted share, for the three months ended September 30, 2016.March 31, 2022. This increasedecrease in net income is primarily the result of an increase in net interest incomethe provision for credit losses of $4.5$25.7 million and an increase in non-interest income of $0.6 million, offset by an increase in the provision for credit losses of $0.7 million, an increase in non-interest expense of $2.0$22.3 million, and an increase in provision for income taxes of $0.5 million. Refer to “Results of Operations" below for further discussion.
For the nine months ended September 30, 2017, the Company reported net income of $43.7 million, or $0.59 per basic and diluted share, up $4.6 million, or 15.7% on an annualized basis, from $39.1 million, or $0.56 per basic share, for the nine months ended September 30, 2016. This increase is the result ofpartially offset by an increase in net interest income of $13.7$16.2 million, an increase in non-interest income of $9.2$7.4 million, offset by an increaseand a decrease in the provision for credit losses of $10.0 million, an increase in non-interest expense of $6.2 million, an increase in provision for income taxes of $2.1 million, and a decrease in net income attributed to noncontrolling interest of $0.1$7.2 million. Refer to “Results of Operations" below for further discussion.
The annualized return on average assets was 0.92%0.27% for the three months ended September 30, 2017,March 31, 2023, compared to 0.86%1.16% for the three months ended September 30, 2016.March 31, 2022. The annualized return on average stockholders' equity was 7.64%2.61% for the three months ended September 30, 2017,March 31, 2023, compared to 7.83%9.91% for the three months ended September 30, 2016.March 31, 2022.
The net interest margin was 3.57%3.36% for the three months ended September 30, 2017, upMarch 31, 2023, down from 3.48%3.49% for the three months ended September 30, 2016.March 31, 2022. The increasedecrease in the net interest margin is a result of an increase in the yield on interest-earning assets by 15 basis points to 4.25% for the three months ended September 30, 2017 from 4.10% for the three months ended September 30, 2016, partially offset by an increase of 6165 basis points in the Company's overall cost of funds (including non-interest-bearing demand checking accounts) to 0.71%1.94% for the three months ended September 30, 2017March 31, 2023 from 0.65%0.29% for the three months ended September 30, 2016.
The net interest margin was 3.56% for the nine months ended September 30, 2017, compared to 3.46% for the nine months ended September 30, 2016. TheMarch 31, 2022, partially offset by an increase in the net interest margin in a highly competitive interest rate environment is, in part, the result of an increased in the yield on interest-earning assets by 12of 140 basis points to 4.17%5.10% for the ninethree months ended September 30, 2017March 31, 2023 from 4.05%3.70% for the ninethree months ended September 30, 2016 partially offset by an increase of 3 basis points in interest-bearing liabilities to 0.81% for the nine months ended September 30, 2017 from 0.78% for the nine months ended September 30, 2016.March 31, 2022.
The Company'sCompany’s net interest margin and net interest income has shown improvement fromis sensitive to the most recent low interest rate environment. Asstructure and level of interest rates rise, the Company's net interest margin and net interest income may continue to be under pressure due toas well as competitive pricing in all loan categories and the Company’s ability to contain its cost of funds.deposit categories.
Critical Accounting Policies and Estimates
The SEC defines “critical accounting policies” as those involving significant judgments and difficult or complex assumptions by management, often as a result of the need to make estimates about matters that are inherently uncertain or variable, which have, or could have, a material impact on the carrying value of certain assets or net income. The preparation of financial statements in accordance with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, income and expenses, and disclosure of contingent assets and liabilities. Actual results could differ from those estimates. As discussed in the Company’s 20162022 Annual Report on Form 10-K, management has identified the valuation of available-for-sale securities, accounting for assets and liabilities acquired, the determination of the allowance for loancredit losses and lease losses, the review of goodwill and intangibles for impairment income tax accounting, and valuation of deferred tax assets as the Company’s most critical accounting policies.
Recent Accounting Developments
In March 2023, the FASB issued ASU 2023-02, "Investments – Equity Method and Joint Ventures (Topic 323), Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method" which allows entities to use the proportional amortization method to account for tax equity investments, under certain conditions. This ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years for public entities. Management has determined that ASU 2023-02 does apply to the Company and is currently determining the impact as of March 31, 2023.
Non-GAAP Financial Measures and Reconciliation to GAAP
In addition to evaluating the Company’s results of operations in accordance with GAAP, management periodically supplements this evaluation with an analysis of certain non-GAAP financial measures, such as operating earnings metrics, the return on average tangible assets, return on average tangible equity, the tangible equity ratio, tangible book value per share, and dividend payout ratio, and the

ratio of the allowance for loan and lease losses related to originated loans and leases as a percentage of originated loans and leases.ratio. Management believes that these non-GAAP financial measures provide information useful to investors in understanding the Company’s underlying operating performance and trends, and facilitates comparisons with the performance assessment of financial performance, including non-interest expense control, while the tangible equity ratio and tangible book value per share are used to analyze the relative strength of the Company’s capital position.
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Table of Contents
The following table summarizesreconciles the Company’s operating earnings, operating return on average assets and operating return on average stockholders’ equity for the periods indicated:
 At and for the Three Months Ended  
September 30,
 At and for the Nine Months Ended  
 September 30,
 2017 2016 2017 2016
  
Net income, as reported$15,366
 $13,617
 $43,691
 $39,083
Adjustments to arrive at operating earnings:       
Merger and acquisition-related expenses205
 
 205
 
Tax effect(70) 
 (72) 
Total adjustments, net of tax135
 
 133
 
Operating earnings$15,501
 $13,617
 $43,824
 $39,083
        
Basic earnings per share, as reported$0.20
 $0.19
 $0.59
 $0.56
Adjustments to arrive at basic operating earnings per share:       
Merger and acquisition-related expenses
 
 
 
Total adjustments per share
 
 
 
Basic operating earnings per share$0.20
 $0.19
 $0.59
 $0.56
        
Average total assets$6,681,042
 $6,360,097
 $6,567,101
 $6,230,612
Operating return on average assets (annualized)0.93% 0.86% 0.89% 0.84%
        
Average total stockholders’ equity$804,666
 $695,205
 $760,447
 $686,134
Operating return on average stockholders’ equity (annualized)7.71% 7.83% 7.68% 7.59%
At and for the Three Months Ended 
 March 31,
20232022
(Dollars in Thousands)
Reported Pretax Income$8,668 $33,050 
Less:
Security gains1,701
Add:
Day 1 PCSB CECL provision16,744
Merger and acquisition expense (1)
6,409
Operating Pretax Income$30,120 33,050 
Estimated effective tax rate22.7 %25.2 %
Estimated taxes6,8378,345
Operating earnings after tax$23,283$24,705
Operating earnings per common share:
Basic$0.27 $0.32 
Diluted$0.27 $0.32 
(1) Merger and acquisition expense related to the acquisition of PCSB.




The following table summarizestables reconcile the Company’s return on average tangible assets and return on average tangible stockholders’ equity for the periods indicated:
Three Months Ended
March 31,
2023
December 31,
2022
September 30,
2022
June 30,
2022
March 31,
2022
(Dollars in Thousands)
Operating earnings$23,283$30,015$31,222$25,730$24,705
Average total assets$11,131,087$8,857,631$8,586,420$8,515,330$8,531,043
Less: Average goodwill and average identified intangible assets, net278,135162,266162,387162,507162,632
Average tangible assets$10,852,952$8,695,365$8,424,033$8,352,823$8,368,411
Return on average assets (annualized)0.27%1.34%1.40%1.18%1.16%
Less:
Security gains0.05%0.01%—%—%—%
Add:
Day 1 PCSB CECL provision0.47%—%—%—%—%
Merger and acquisition expenses0.18%0.02%0.04%0.02%—%
Operating return on average assets (annualized)0.87%1.35%1.44%1.20%1.16%
Return on average tangible assets (annualized)0.28%1.37%1.43%1.21%1.18%
Less:
Security gains0.05%0.01%—%—%—%
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Table of Contents
Three Months EndedThree Months Ended
September 30,
2017
 June 30,
2017
 March 31, 2017 December 31, 2016 September 30,
2016
March 31,
2023
December 31,
2022
September 30,
2022
June 30,
2022
March 31,
2022
(Dollars in Thousands)(Dollars in Thousands)
Net income, as reported$15,366
 $14,880
 $13,445
 $13,279
 $13,617
Add:Add:
Day 1 PCSB CECL provisionDay 1 PCSB CECL provision0.48%—%—%—%—%
Merger and acquisition expensesMerger and acquisition expenses0.18%0.02%0.04%0.02%—%
         
Average total assets$6,681,042
 $6,556,665
 $6,461,183
 $6,425,983
 $6,360,097
Less: Average goodwill and average identified intangible assets, net144,747

145,269

145,778

146,382

146,997
Average tangible assets$6,536,295
 $6,411,396
 $6,315,405
 $6,279,601
 $6,213,100
         
Return on average tangible assets (annualized)0.94% 0.93% 0.85% 0.85% 0.88%
Operating return on average tangible assets (annualized)Operating return on average tangible assets (annualized)0.89%1.38%1.47%1.23%1.18%
         
Average total stockholders' equity$804,666
 $766,529
 $709,095
 $699,749
 $695,205
Average total stockholders' equity$1,159,635$982,306$981,379$976,167$997,293
Less: Average goodwill and average identified intangible assets, net144,747
 145,269
 145,778
 146,382
 146,997
Less: Average goodwill and average identified intangible assets, net278,135162,266162,387162,507162,632
Average tangible stockholders' equity$659,919
 $621,260
 $563,317
 $553,367
 $548,208
Average tangible stockholders' equity$881,500$820,040$818,992$813,660$834,661
         
Return on average stockholders' equity (annualized)Return on average stockholders' equity (annualized)2.61%12.09%12.29%10.32%9.91%
Less:Less:
Security gainsSecurity gains0.45%0.11%—%—%—%
Add:Add:
Day 1 PCSB CECL provisionDay 1 PCSB CECL provision4.46%—%—%—%—%
Merger and acquisition expensesMerger and acquisition expenses1.71%0.21%0.36%0.16%—%
Operating return on average stockholders' equity (annualized)Operating return on average stockholders' equity (annualized)8.33%12.19%12.65%10.48%9.91%
Return on average tangible stockholders' equity (annualized)9.31% 9.58% 9.55% 9.60% 9.94%Return on average tangible stockholders' equity (annualized)3.43%14.48%14.72%12.39%11.84%
Less:Less:
Security gainsSecurity gains0.60%0.13%—%—%—%
Add:Add:
Day 1 PCSB CECL provisionDay 1 PCSB CECL provision5.87%—%—%—%—%
Merger and acquisition expensesMerger and acquisition expenses2.25%0.26%0.43%0.20%—%

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Table of Contents
Three Months Ended
March 31,
2023
December 31,
2022
September 30,
2022
June 30,
2022
March 31,
2022
(Dollars in Thousands)
Operating return on average tangible stockholders' equity (annualized)10.95%14.61%15.15%12.59%11.84%
Three Months Ended
March 31,
2023
December 31,
2023
September 30,
2023
June 30,
2022
March 31,
2022
(Dollars in Thousands)
Net income, as reported$7,560$29,695$30,149$25,195$24,705
Average total assets$11,131,087$8,857,631$8,586,420$8,515,330$8,531,043
Less: Average goodwill and average identified intangible assets, net278,135162,266162,387162,507162,632
Average tangible assets$10,852,952$8,695,365$8,424,033$8,352,823$8,368,411
Return on average tangible assets (annualized)0.28%1.37%1.43%1.21%1.18%
Average total stockholders' equity$1,159,635$982,306$981,379$976,167$997,293
Less: Average goodwill and average identified intangible assets, net278,135162,266162,387162,507162,632
Average tangible stockholders' equity$881,500$820,040$818,992$813,660$834,661
Return on average tangible stockholders' equity (annualized)3.43%14.48%14.72%12.39%11.84%

The following tables summarizetable reconciles the Company's tangible equity ratio for the periods indicated:
Three Months Ended
March 31,
2023
December 31,
2022
September 30,
2022
June 30,
2022
March 31,
2022
(Dollars in Thousands)
Total stockholders' equity$1,165,066$992,125$963,618$968,496$981,935
Less: Goodwill and identified intangible assets, net271,302162,208162,329162,449162,569
Tangible stockholders' equity$893,764$829,917$801,289$806,047$819,366
Total assets$11,522,485$9,185,836$8,695,708$8,514,230$8,633,736
Less: Goodwill and identified intangible assets, net271,302162,208162,329162,449162,569
Tangible assets$11,251,183$9,023,628$8,533,379$8,351,781$8,471,167
Tangible equity ratio7.94%9.20%9.39%9.65%9.67%

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Table of Contents
 Three Months Ended
 September 30,
2017
 June 30,
2017
 March 31,
2017
 December 31, 2016 September 30,
2016
 (Dollars in Thousands)
Total stockholders' equity$804,762
 $795,618
 $703,873
 $695,544
 $696,371
Less: Goodwill and identified intangible assets, net144,453
 144,972
 145,491
 146,023
 146,644
Tangible stockholders' equity$660,309
 $650,646
 $558,382
 $549,521
 $549,727
          
Total assets$6,686,284
 $6,658,067
 $6,497,721
 $6,438,129
 $6,380,312
Less: Goodwill and identified intangible assets, net144,453
 144,972
 145,491
 146,023
 146,644
Tangible assets$6,541,831
 $6,513,095
 $6,352,230
 $6,292,106
 $6,233,668
          
Tangible equity ratio10.09% 9.99% 8.79% 8.73% 8.82%


The following tables summarizetable reconciles the Company's tangible book value per share for the periods indicated:
Three Months EndedThree Months Ended
September 30,
2017
 June 30,
2017
 March 31, 2017 December 31, 2016 September 30,
2016
March 31,
2023
December 31,
2022
September 30,
2022
June 30,
2022
March 31,
2022
(Dollars in Thousands)(Dollars in Thousands)
Tangible stockholders' equity$660,309
 $650,646
 $558,382
 $549,521
 $549,727
Tangible stockholders' equity$893,764 $829,917 $801,289 $806,047 $819,366 
         
Common shares issued81,695,695
 81,695,695
 75,744,445
 75,744,445
 75,744,445
Common shares issued96,998,075 85,177,172 85,177,172 85,177,172 85,177,172 
Less:         Less:
Treasury shares4,572,954
 4,717,775
 4,707,096
 4,707,096
 4,734,512
Treasury shares7,734,891 7,731,445 7,730,945 7,995,888 7,037,464 
Unallocated ESOP150,921
 159,510
 168,099
 176,688
 185,787
Unallocated ESOP— — 4,833 11,442 18,051 
Unvested restricted stock471,702
 457,966
 476,854
 476,854
 476,938
Unvested restricted stock598,049 601,495 601,995 497,297 500,098 
Common shares outstanding76,500,118
 76,360,444
 70,392,396
 70,383,807
 70,347,208
Common shares outstanding88,665,135 76,844,232 76,839,399 76,672,545 77,621,559 
         
Tangible book value per share$8.63
 $8.52
 $7.93
 $7.81
 $7.81
Tangible book value per share$10.08 $10.80 $10.43 $10.51 $10.56 


The following table summarizesreconciles the Company's dividend payout ratio for the periods indicated:
Three Months Ended
March 31,
2023
December 31,
2022
September 30,
2022
June 30,
2022
March 31,
2022
(Dollars in Thousands)
Dividends paid$11,970$10,374$9,969$10,030$9,705
Net income, as reported$7,560$29,695$30,149$25,195$24,705
Dividend payout ratio158.33%34.94%33.07%39.81%39.28%


 Three Months Ended
 September 30,
2017
 June 30,
2017
 March 31, 2017 December 31, 2016 September 30,
2016
 (Dollars in Thousands)
Dividends paid$6,899
 $6,887
 $6,350
 $6,348
 $6,346
          
Net income, as reported$15,366
 $14,880
 $13,445
 $13,279
 $13,617
          
Dividend payout ratio44.90% 46.28% 47.23% 47.80% 46.60%
55


The following table summarizes the Company’s allowance for loan and lease losses related to originated loans and leases as a percentageTable of total originated loans and leases for the periods indicated:
Contents
 Three Months Ended
 September 30,
2017
 June 30,
2017
 March 31, 2017 December 31, 2016 September 30,
2016
          
Allowance for loan and lease losses$65,413
 $64,521
 $66,133
 $53,666
 $58,892
Less: Allowance for acquired loan and lease losses1,003
 1,188
 1,304
 1,253
 1,640
Allowance for originated loan and lease losses$64,410

$63,333

$64,829

$52,413

$57,252
          
Total loans and leases$5,639,440
 $5,537,406
 $5,461,779
 $5,398,864
 $5,332,300
Less: Total acquired loans and leases260,196
 271,157
 295,055
 315,304
 346,377
Total originated loan and leases$5,379,244

$5,266,249

$5,166,724

$5,083,560

$4,985,923
          
Allowance for loan and lease losses related to originated loans and leases as a percentage of originated loan and leases1.20%
1.20%
1.25%
1.03%
1.15%


Financial Condition
Loans and Leases
The following table summarizes the Company's portfolio of loansloan and leaseslease receivables as of the dates indicated:
At March 31, 2023At December 31, 2022
BalancePercent
of Total
BalancePercent
of Total
(Dollars in Thousands)
Commercial real estate loans:
Commercial real estate$3,986,676 43.1 %$3,046,746 39.9 %
Multi-family mortgage1,356,546 14.7 %1,150,597 15.1 %
 Construction267,192 2.9 %206,805 2.7 %
Total commercial real estate loans5,610,414 60.7 %4,404,148 57.7 %
Commercial loans and leases:  
Commercial858,460 9.3 %752,691 9.9 %
Equipment financing1,245,742 13.5 %1,216,585 15.9 %
 Condominium association42,444 0.5 %46,966 0.6 %
 PPP503 — %257 — %
Total commercial loans and leases2,147,149 23.3 %2,016,499 26.4 %
 Consumer loans:   
Residential mortgage1,086,754 11.7 %844,614 11.0 %
 Home equity345,673 3.7 %322,622 4.2 %
 Other consumer56,975 0.6 %56,505 0.7 %
Total consumer loans1,489,402 16.0 %1,223,741 15.9 %
Total loans and leases9,246,965 100.0 %7,644,388 100.0 %
Allowance for loan and lease losses(120,865)(98,482)
Net loans and leases$9,126,100 $7,545,906 
 At September 30, 2017 At December 31, 2016
 Balance 
Percent
of Total
 Balance 
Percent
of Total
 (Dollars in Thousands)
Commercial real estate loans:       
Commercial real estate$2,119,440
 37.6% $2,050,382
 38.1%
Multi-family mortgage743,912
 13.2% 731,186
 13.5%
Construction165,657
 2.9% 136,999
 2.5%
Total commercial real estate loans3,029,009
 53.7% 2,918,567
 54.1%
Commercial loans and leases:       
Commercial689,010
 12.2% 635,426
 11.8%
Equipment financing842,516
 14.9% 799,860
 14.8%
Condominium association53,770
 1.0% 60,122
 1.1%
Total commercial loans and leases1,585,296
 28.1% 1,495,408
 27.7%
Consumer loans:       
Residential mortgage652,415
 11.6% 624,349
 11.6%
Home equity356,982
 6.3% 342,241
 6.3%
Other consumer15,738
 0.3% 18,299
 0.3%
Total consumer loans1,025,135
 18.2% 984,889
 18.2%
Total loans and leases5,639,440
 100.0% 5,398,864
 100.0%
Allowance for loan and lease losses(65,413)   (53,666)  
Net loans and leases$5,574,027
   $5,345,198
  


The following table sets forth the growth in the Company’s loan and lease portfolios during the ninethree months ended September 30, 2017:March 31, 2023:
At September 30,
2017
 At December 31,
2016
 Dollar Change 
Percent Change
(Annualized)
At March 31,
2023
At December 31,
2022
Dollar ChangePercent Change
(Annualized)
(Dollars in Thousands) (Dollars in Thousands)
Commercial real estate$3,029,009
 $2,918,567
 $110,442
 5.0%Commercial real estate$5,610,414 $4,404,148 $1,206,266 109.6 %
Commercial1,585,296
 1,495,408
 89,888
 8.0%Commercial2,147,149 2,016,499 130,650 25.9 %
Consumer1,025,135
 984,889
 40,246
 5.4%Consumer1,489,402 1,223,741 265,661 86.8 %
Total loans and leases$5,639,440
 $5,398,864
 $240,576
 5.9%Total loans and leases$9,246,965 $7,644,388 $1,602,577 83.9 %
Less: PPPLess: PPP503 257 246 382.9 %
Total core loans and leasesTotal core loans and leases$9,246,462 $7,644,131 $1,602,331 83.8 %
The Company's loan portfolio consists primarily of first mortgage loans secured by commercial, multi-family and residential real estate properties located in the Company's primary lending area, loans to business entities, including commercial lines of credit, loans to condominium associations and loans and leases used to finance equipment used by small businesses. The Company also provides financing for construction and development projects, home equity and other consumer loans.
The Company employs seasoned commercial lenders and retail bankers who rely on community and business contacts as well as referrals from customers, attorneys and other professionals to generate loans and deposits. Existing borrowers are also an important source of business since many of them have more than one loan outstanding with the Company. The Company's ability to originate loans depends on the strength of the economy, trends in interest rates, and levels of customer demand and market competition.

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The Company's current policy is that the aggregate amount of loans outstandinga total credit exposure to any one borrower or related entitiesobligor relationship may not exceed $35.0$60.0 million unless approved by the BoardCompany's Credit Committee, a committee of the Company's Board of Directors.
Committee. As of September 30, 2017,March 31, 2023, there were ten borrowerswas one borrower with loans and commitments over $35.0$60.0 million. The total of those loans and commitments were $424.8was $193.0 million, or 6.5%1.69% of total loans and commitments, as of September 30, 2017.March 31, 2023. As of December 31, 2022, there were three borrowers with loans and commitments over $60.0 million. The total of those loans and commitments was $208.5 million, or 2.2% of total loans and commitments, as of December 31, 2022.
The Company has written underwriting policies to control the inherent risks in loan origination. The policies address approval limits, loan-to-value ratios, appraisal requirements, debt service coverage ratios, loan concentration limits and other matters relevant to loan underwriting.
Commercial Real Estate Loans
The commercial real estate portfolio is comprised of commercial real estate loans, multi-family mortgage loans, and construction loans and is the largest component of the Company's overall loan portfolio, representing 53.7%60.7% of total loans and leases outstanding as of September 30, 2017.March 31, 2023.
Typically, commercial real estate loans are larger in size and involve a greater degree of risk than owner-occupied residential mortgage loans. Loan repayment is usually dependent on the successful operation and management of the properties and the value of the properties securing the loans. Economic conditions can greatly affect cash flows and property values.
A number of factors are considered in originating commercial real estate and multi-family mortgage loans. The qualifications and financial condition of the borrower (including credit history), as well as the potential income generation and the value and condition of the underlying property, are evaluated. When evaluating the qualifications of the borrower, the Company considers the financial resources of the borrower, the borrower's experience in owning or managing similar property and the borrower's payment history with the Company and other financial institutions. Factors considered in evaluating the underlying property include the net operating income of the mortgaged premises before debt service and depreciation, the debt service coverage ratio (the ratio of cash flow before debt service to debt service), the use of conservative capitalization rates, and the ratio of the loan amount to the appraised value. Generally, personal guarantees are obtained from commercial real estate loan borrowers.
Commercial real estate and multi-family mortgage loans are typically originated for terms of five to fifteen years with amortization periods of 20 to 30 years. Many of the loans are priced at inception on a fixed-rate basis generally for periods ranging from two to five years with repricing periods for longer-term loans. When possible, prepayment penalties are included in loan covenants on these loans. For commercial customers who are interested in loans with terms longer than five years, the Company offers loan level derivatives to accommodate customer need.
The Company's urban and suburban market area is characterized by a large number of apartment buildings, condominiums and office buildings. As a result, commercial real estate and multi-family mortgage lending has been a significant part of the Company's activities for many years. These types of loans typically generate higher yields, but also involve greater credit risk. Many of the Company's borrowers have more than one multi-family or commercial real estate loan outstanding with the Company.
The Company's commercial real estate portfolio is composed primarily of loans secured by apartment buildings ($741.6 million)1.3 billion), office buildings ($637.8838.7 million), retail stores ($507.2958.4 million), industrial properties ($358.6774.0 million), mixed-use properties ($214.1500.0 million), lodging services ($108.3194.6 million), and to food services ($42.780.2 million) as of September 30, 2017.March 31, 2023. At that date, over 97.2%approximately 78.6% of the commercial real estate loans outstanding were secured by properties located in New England.
Construction and development financing is generally considered to involve a higher degree of risk than long-term financing on improved, occupied real estate and thus has lower concentration limits than do other commercial credit classes. Risk of loss on a construction loan is largely dependent upon the accuracy of the initial estimate of construction costs, the estimated time to sell or rent the completed property at an adequate price or rate of occupancy, and market conditions. If the estimates and projections prove to be inaccurate, the Company may be confronted with a project which, upon completion, has a value that is insufficient to assure full loan repayment.
Criteria applied in underwriting construction loans for which the primary source of repayment is the sale of the property are different from the criteria applied in underwriting construction loans for which the primary source of repayment is the stabilized cash flow from the completed project. For those loans where the primary source of repayment is from resale of the property, in addition to the normal credit analysis performed for other loans, the Company also analyzes project costs, the attractiveness of the property in relation to the market in which it is located and demand within the market area. For those construction loans where the source of repayment is the stabilized cash flow from the completed project, the Company analyzes

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Table of Contents
not only project costs but also how long it might take to achieve satisfactory occupancy and the reasonableness of projected rental rates in relation to market rental rates.
Commercial Loans
The Company's commercial loan and lease portfolio is comprised of commercial loans, equipment financing loans and leases and condominium association loans andwhich represented 28.1%23.3% of total loans outstanding as of September 30, 2017.March 31, 2023.
The Company's commercial loan and lease portfolio is composed primarily of loans and leases to small to medium sized businesses ($489.9789.6 million), transportation services ($346.4389.7 million), food services ($189.7 million), recreation services ($145.9 million), food services ($118.1134.3 million), manufacturing ($97.5115.6 million), retail ($115.7 million), and rental and leasing services ($75.9 million) and retail ($70.560.6 million) as of September 30, 2017.March 31, 2023.
The Company provides commercial banking services to companies in its market area. Approximately 47.0%37.9% of the commercial loans outstanding as of September 30, 2017March 31, 2023 were made to borrowers located in New England. The remaining 53.0%62.1% of the commercial loans outstanding were made to borrowers in other areas in the United States of America, primarily by the Company's equipment financing divisions. Product offerings include lines of credit, term loans, letters of credit, deposit services and cash management. These types of credit facilities have as their primary source of repayment cash flows from the operations of a business. Interest rates offered are available on a floating basis tied to the prime rate or a similar index or on a fixed-rate basis referenced on the Federal Home Loan Bank of Boston and New York ("FHLBB"FHLB") index.
Credit extensions are made to established businesses on the basis of loan purpose and assessment of capacity to repay as determined by an analysis of their financial statements, the nature of collateral to secure the credit extension and, in most instances, the personal guarantee of the owner of the business as well as industry and general economic conditions. The Company also participates in U.S. Government programs such as the Small Business Administration (the "SBA") in both theSBA 7A program and as an SBA preferred lender. Included in the commercial loans balances are the PPP loans totaling $0.5 million as of March 31, 2023.
The Company’s equipment financing divisions focus on market niches in which its lenders have deep experience and industry contacts, and on making loans to customers with business experience. An important part of the Company’s equipment financing loan origination volume comes from equipment manufacturers and existing customers as they expand their operations. The equipment financing portfolio is composed primarily of loans to finance laundry, tow trucks, fitness, dry cleaning and convenience store equipment. Approximately 16.0%15.7% of the commercial loans outstanding in the equipment financing divisions were made to borrowers located primarily in the greater New York and New Jersey metropolitan area. Typically, the loans are priced at a fixed rate of interest and require monthly payments over their three-3- to seven-year7-year life. The yields earned on equipment financing loans are higher than those earned on the commercial loans made by the Banks because they involve a higher degree of credit risk. Equipment financing customers are typically small-business owners who operate with limited financial resources and who face greater risks when the economy weakens or unforeseen adverse events arise. Because of these characteristics, personal guarantees of borrowers are usually obtained along with liens on available assets. The size of loan is determined by an analysis of cash flow and other characteristics pertaining to the business and the equipment to be financed, based on detailed revenue and profitability data of similar operations.
Loans to condominium associations are for the purpose of funding capital improvements, are made for five- to ten-year terms and are secured by a general assignment of condominium association revenues. Among the factors considered in the underwriting of such loans are the level of owner occupancy, the financial condition and history of the condominium association, the attractiveness of the property in relation to the market in which it is located and the reasonableness of estimates of the cost of capital improvements to be made. Depending on loan size, funds are advanced as capital improvements are made and, in more complex situations, after completion of engineering inspections.
Consumer Loans
The consumer loan portfolio, which is comprised of residential mortgage loans, home equity loans and lines of credit, and other consumer loans, and represented 18.2%16.0% of total loans outstanding as of September 30, 2017.March 31, 2023. The Company focuses its mortgage and home equity lending on existing and new customers within its branch networks in its urban and suburban marketplaces in the greater Boston and Providence metropolitan areas.
The Company originates adjustable- and fixed-rate residential mortgage loans secured by one- to four-family residences. Each residential mortgage loan granted is subject to a satisfactorily completed application, employment verification, credit history and a demonstrated ability to repay the debt. Generally, loans are not made when the loan-to-value ratio exceeds 80% unless private mortgage insurance is obtained and/or there is a financially strong guarantor. Appraisals are performed by outside independent fee appraisers.
In general, the Company maintains three-, five- and seven-year adjustable-rate mortgage loans and ten-year fixed-rate fully amortizing mortgage loans in its portfolio. Fixed-rate mortgage loans with maturities beyond ten years, such as 15- and
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Table of Contents
30-year fixed-rate mortgages, are generally sold into the secondary market on a servicing-released basis. The Banks act as correspondent banks in these secondary-market transactions. Loan sales in the secondary market provide funds for additional lending and other banking activities.
Underwriting guidelines for home equity loans and lines of credit are similar to those for residential mortgage loans. Home equity loans and lines of credit are limited to no more than 80% of the appraised value of the property securing the loan including the amount of any existing first mortgage liens.
Other consumer loans have historically been a modest part of the Company's loan originations. As of September 30, 2017,March 31, 2023, other consumer loans equaled $15.7$57.0 million, or 0.3%0.6% of total loans outstanding.
Asset Quality
Criticized and Classified Assets
The Company's management rates certain loans and leases as "other assets especially mentionedmentioned" ("OAEM")", "substandard" or "doubtful" based on criteria established under banking regulations.Theseregulations. These loans and leases are collectively referred to as "criticized" assets. Loans and leases rated OAEM have potential weaknesses that deserve management's close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects of the loan or lease at some future date. Loans and leases rated as substandard are inadequately protected by the payment capacity of the obligor or of the collateral pledged, if any. Substandard loans and leases have a well-defined weakness or weaknesses that jeopardize the liquidation of debt and are characterized by the distinct possibility that the Company will sustain some loss if existing deficiencies are not corrected. Loans and leases rated as doubtful have well-defined weaknesses that jeopardize the orderly liquidation of debt and partial loss of principal is likely. As of September 30, 2017,March 31, 2023, the Company had $74.3$156.4 million of total assets, including acquired assets that were designated as criticized. This compares to $70.4$108.2 million of assets designated as criticized as of December 31, 2016.2022. The increase of $48.2 million in criticized assets was primarily due to the downgrade of severaldriven by increases in commercial real estate loans, offset byrelationships for the payoffs of several criticized loans during the first ninethree months of 2017.ended March 31, 2023.
Nonperforming Assets
"Nonperforming assets" consist of nonperformingnonaccrual loans and leases, other real estate owned ("OREO") and other repossessed assets. Under certain circumstances, the Company may restructure the terms of a loan or lease as a concession to a borrower, except for acquired loans and leases which are individually evaluated against expected performance on the date of acquisition. These restructured loans and leases are generally considered "nonperforming loans and leases" until a history of collection of at least six months on the restructured terms of the loan or lease has been established. OREO consists of real estate acquired through foreclosure proceedings and real estate acquired through acceptance of a deed in lieu of foreclosure. Other repossessed assets consist of assets that have been acquired through foreclosure that are not real estate and are included in other assets on the Company's unaudited consolidated balance sheets.
Accrual of interest on loans generally is discontinued when contractual payment of principal or interest becomes past due 90 days or, if in management's judgment, reasonable doubt exists as to the full timely collection of interest. Exceptions may be made if the loan has matured and is in the process of renewal or is well-secured and in the process of collection. When a loan is placed on nonaccrual status, interest accruals cease and all previously accrued and uncollected accrued interest is reversed and charged against current interest income. Interest payments on nonaccrual loans are generally applied to principal. If collection of the principal is reasonably assured, interest payments are recognized as income on the cash basis. Loans are generally returned to accrual status when principal and interest payments are current, full collectability of principal and interest is reasonably assured and a consistent record of at least six months of performance has been achieved.
In cases where a borrower experiences financial difficulties and the Company makes or reasonably expects to make certain concessionary modifications to contractual terms, the loan is classified as a troubled debt restructuredmodified loan. In determining whether a debtor is experiencing financial difficulties, the Company considers, among other factors, if the debtor is in payment default or is likely to be in payment default in the foreseeable future without the modification, the debtor declared or is in the process of declaring bankruptcy, there is substantial doubt that the debtor will continue as a going concern, the debtor's entity-specific projected cash flows will not be sufficient to service its debt, or the debtor cannot obtain funds from sources other than the existing creditors at market terms for debt with similar risk characteristics.
Nonperforming assets are composed of nonaccrual loans and leases, OREO and other repossessed assets. As of September 30, 2017,March 31, 2023, the Company had nonperforming assets of $44.4$29.0 million, representing 0.66%0.25% of total assets, compared to nonperforming assets of $41.5$15.3 million, or 0.64%0.17% of total assets as of December 31, 2016.2022. The increase of $13.7 million in nonperforming assets was primarily duedriven by the inclusion of loans related to an increase of $2.6one commercial customer totaling $5.1 million, in OREO, as well as an increase of $0.4two construction customers totaling $3.2 million, in repossessed assetsand two commercial real estate customers totaling $4.2 million during the first ninethree months of 2017.

ended March 31, 2023.
The Company evaluates the underlying collateral of each nonperformingnonaccrual loan and lease and continues to pursue the collection of interest and principal. Management believes that the current level of nonperforming assets remains manageable relative to the size of the Company's loan and lease portfolio. If economic conditions were to worsen or if the marketplace were to experience prolonged economic stress, management believes it is likely that the level of nonperforming assets would increase, as would the level of charged-off loans.        
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Table of Contents
Past Due and Accruing
Accrual of interest on loans generally is discontinued when contractual payment of principal or interest becomes past due 90 days or, if in management's judgment, reasonable doubt exists as to the full timely collection of interest. Exceptions may be made if the loan has matured and is in the process of renewal or is well-secured and in the process of collection. When a loan is placed on nonaccrual status, interest accruals cease and uncollected accrued interest is reversed and charged against current interest income. Interest payments on nonaccrual loans are generally applied to principal. If collection of the principal is reasonably assured, interest payments are recognized as income on the cash basis. Loans are generally returned to accrual status when principal and interest payments are current, full collectability of principal and interest is reasonably assured and a consistent record of at least six consecutive months of performance has been achieved.
As of September 30, 2017,March 31, 2023, the Company had $0.7 million loans and leases greater than 90 days past due and accruing, of $2.5 million, or 0.04% of total loans and leases, compared to $7.1 million, or 0.13% of totalminimal to no loans and leases, as of December 31, 2016, representing an decrease of $4.6 million.2022. The decrease$0.7 million increase in loans and leases greater than 90 days past due and accruing loans wasis primarily due to the payoffs of several past due acquired loans during the first nine months of 2017.a single commercial real estate relationship totaling $0.7 million.
The following table sets forth information regarding nonperforming assets for the periods indicated:
At March 31, 2023At December 31, 2022
(Dollars in Thousands)
Nonperforming loans and leases:
Nonaccrual loans and leases:
Commercial real estate$4,589 $607 
Multi-family mortgage— — 
Construction3,883 707 
Total commercial real estate loans8,472 1,314 
Commercial5,495 464 
Equipment financing9,908 9,653 
Condominium association51 58 
Total commercial loans and leases15,454 10,175 
Residential mortgage3,449 2,680 
Home equity1,079 723 
Other consumer— 
Total consumer loans4,528 3,405 
Total nonaccrual loans and leases28,454 14,894 
Other repossessed assets508 408 
Total nonperforming assets$28,962 $15,302 
Loans and leases past due greater than 90 days and accruing$726 $33 
Total delinquent loans and leases 61-90 days past due4,190 2,218 
Restructured loans and leases not included in nonperforming assets12,708 16,385 
Total nonperforming loans and leases as a percentage of total loans and leases0.31 %0.19 %
Total nonperforming assets as a percentage of total assets0.25 %0.17 %
Total delinquent loans and leases 61-90 days past due as a percentage of total loans and leases0.05 %0.03 %

 At September 30, 2017 At December 31, 2016
 (Dollars in Thousands)
Nonperforming loans and leases:   
Nonaccrual loans and leases:   
Commercial real estate$3,051
 $5,340
Multi-family mortgage792
 1,404
Construction860
 
Total commercial real estate loans4,703
 6,744
    
Commercial22,367
 22,974
Equipment financing9,858
 6,758
Total commercial loans and leases32,225
 29,732
    
Residential mortgage1,969
 2,501
Home equity1,047
 951
Other consumer29
 149
Total consumer loans3,045
 3,601
    
Total nonaccrual loans and leases39,973
 40,077
    
Other real estate owned3,235
 618
Other repossessed assets1,163
 781
Total nonperforming assets$44,371
 $41,476
    
Loans and leases past due greater than 90 days and accruing$2,523
 $7,077
    
Total nonperforming loans and leases as a percentage of total loans and leases0.71% 0.74%
Total nonperforming assets as a percentage of total assets0.66% 0.64%

Troubled Debt Restructured Loans and Leases
As of September 30, 2017, restructured loans included $5.0 million of commercial real estate loans, $0.8 million of multi-family mortgage loans, $17.3 million of commercial loans, $3.9 million of equipment financing loans and leases, $1.1 million of residential mortgage loans and $1.2 million of home equity loans. As of December 31, 2016, restructured loans included $4.9 million of commercial real estate loans, $2.0 million of multi-family mortgage loans, $13.7 million of commercial loans, $2.1 million of equipment financing loans and leases, $1.3 million of residential mortgage loans and $1.8 million of home equity loans. A restructured loan is a loan for which the maturity date was extended, the principal was reduced, and/or the interest rate was modified to drop the required monthly payment to a more manageable amount for the borrower.
The following table sets forth information regarding troubled debt restructured loans and leases at the dates indicated:
 At September 30, 2017 At December 31, 2016
 (Dollars in Thousands)
Troubled debt restructurings: 
  
On accrual$14,024
 $13,883
On nonaccrual15,290
 11,919
Total troubled debt restructurings$29,314
 $25,802

Changes in troubled debt restructured loans and leases were as follows for the periods indicated:
 Three Months Ended September 30, Nine Months Ended 
 September 30,
 2017 2016 2017
2016
 (Dollars in Thousands)
Balance at beginning of period$30,878
 $31,314
 $25,802
 $22,918
Additions1,154
 1,568
 9,303
 11,789
Net charge-offs(590) 28
 (2,580) 110
Repayments(2,128) (892) (2,289) (2,799)
Other reductions (1)

 
 (922) 
Balance at end of period$29,314
 $32,018
 $29,314
 $32,018
__________________________________________________________________________________
(1) Includes loans and leases that were removed from TDR status
AllowancesAllowance for Credit Losses
The allowance for loan and leasecredit losses consists of general and specific allowances and reflects management's estimate of probableexpected loan and lease losses inherent inover the life of the loan portfolio at the balance sheet date.or lease. Management uses a consistent and systematic process and methodology to evaluate the adequacy of the allowance for loan and leasecredit losses on a quarterly basis. The allowance is calculated by loan type: commercial real estate loans, commercial loans and leases, and consumer loans, each category of which is further segregated. A formula-based credit evaluation approach is applied to each group that is evaluated collectively, primarily by loss factors, which includes estimates of incurred losses over an estimated LEP, assigned to each risk rating by type, coupled with an analysis of certain loans individually evaluated for impairment. Management continuously evaluates and challenges inputs and assumptions in the allowance for loan and lease loss.credit losses.
The process to determine the allowance for loan and lease losses requires management to exercise considerable judgment regarding the risk characteristics of the loan portfolios and the effect of relevant internal and external factors. While management evaluates currently available information in establishing the allowance for loan and leasecredit losses, future adjustments to the allowance for loan and lease losses may be necessary if conditions differ substantially from the assumptions used in making the evaluations. Management performs a comprehensive review of the allowance for loan and leasecredit losses on a quarterly basis. In addition, various regulatory agencies, as an integral part of their examination process, periodically review a financial
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institution's allowance for loan and leasecredit losses and carrying amounts of other real estate owned. Such agencies may require the financial institution to recognize additions or reductions to the allowance based on their judgments about information available to them at the time of their examination.
The Company’s general allowance methodology provides a quantification of probableestimated losses in the portfolio. Under the current methodology, Management combinesmanagement estimates losses over the historical loss informationlife of the Banksloan using reasonable and supportable forecasts. Forecasts, loan data, and model documentation are extensively analyzed and reviewed throughout the quarter to generateensure estimated losses are appropriate at quarter end. Qualitative adjustments are applied when model output does not align with management expectations. These adjustments are thoroughly reviewed and documented to provide clarity and a single set of ratios.

Management believes it is appropriatereasonable basis for any deviations from the model. For March 31, 2023, qualitative adjustments were applied to aggregate the ratios as the Banks share common environmental factors, operate in similar markets,commercial real estate, commercial, and utilize common underwriting standards in accordance with the Company's Credit Policy.
Management employs a similar analysis for the consolidation of the qualitative factors as it does for the quantitative factors. Again, Management believes the combination of the existing nine qualitative factors used at each of the Banks into a single group of factors for use across the Company is appropriate based on the commonality of environmental factors, markets, and underwriting standards among the Banks.
As of September 30, 2017, the Company had a portfolio of approximately $27.1 million in loans secured by taxi medallions issued by the cities of Boston and Cambridge. As of December 31, 2016, this portfolio was approximately $31.1 million. Application-based mobile ride services, such as Uber and Lyft, have generated increased competition in the transportation sector,consumer portfolios resulting in a reductionnet addition in taxi utilization and, as a result, a reduction in the collateral value and credit quality of taxi medallion loans. This has increased the likelihood that loans secured by taxi medallions may default, or that the borrowers may be unabletotal reserves compared to repay these loans at maturity, potentially resulting in an increase in past due loans, troubled debt restructurings, and charge-offs. The Company’s allowance calculation included a further segmentation of the commercial loans and leases to reflect the increased risk in the Company’s taxi medallion portfolio. This allowance calculation segmentation represents management’s estimations of the risks associated with the portfolio.modeled calculations.
The following tables present the changes in the allowance for loan and lease losses by portfolio category for the three and nine months ended September 30, 2017March 31, 2023 and 2016.2022.
At and for the Three Months Ended March 31, 2023
Commercial
Real Estate
CommercialConsumerTotal
(In Thousands)
Balance at December 31, 2022$68,154 $26,604 $3,724 $98,482 
Charge-offs— (840)(11)(851)
Recoveries383 11 400 
Provision (credit) for loan and lease losses14,532 6,614 1,688 22,834 
Balance at Provision (credit) for loan and lease losses on PCD loans$— $— $— — 
Balance at March 31, 2023$82,692 $32,761 $5,412 $120,865 
Total loans and leases$5,610,414 $2,147,149 $1,489,402 $9,246,965 
Total allowance for loan and lease losses as a percentage of total loans and leases1.47 %1.53 %0.36 %1.31 %
 At and for the Three Months Ended September 30, 2017
 
Commercial
Real Estate
 Commercial Consumer Total
 (In Thousands)
Balance at June 30, 2017$27,954
 $31,099
 $5,468
 $64,521
Charge-offs(65) (1,965) (113) (2,143)
Recoveries
 109
 80
 189
(Credit) provision for loan and lease losses979
 1,832
 35
 2,846
Balance at September 30, 2017$28,868
 $31,075
 $5,470
 $65,413
        
Total loans and leases$3,029,009
 $1,585,296
 $1,025,135
 $5,639,440
Total allowance for loan and lease losses as a percentage of total loans and leases0.95% 1.96% 0.53% 1.16%

At and for the Three Months Ended March 31, 2022
Commercial
Real Estate
CommercialConsumerTotal
(In Thousands)
Balance at December 31, 2021$69,213 $27,055 $2,816 $99,084 
Charge-offs(37)(2,301)(6)(2,344)
Recoveries353 38 397 
Provision (credit) for loan and lease losses(151)(1,604)81 (1,674)
Balance at March 31, 2022$69,031 $23,503 $2,929 $95,463 
Total loans and leases$4,235,325 $1,800,383 $1,187,422 $7,223,130 
Total allowance for loan and lease losses as a percentage of total loans and leases1.63 %1.31 %0.25 %1.32 %
 At and for the Three Months Ended September 30, 2016
 
Commercial
Real Estate
 Commercial Consumer Total
 (In Thousands)
Balance at June 30, 2016$29,861
 $22,916
 $4,481
 $57,258
Charge-offs(50) (545) (244) (839)
Recoveries
 170
 149
 319
Provision for loan and lease losses(1,755) 3,923
 (14) 2,154
Balance at September 30, 2016$28,056
 $26,464
 $4,372
 $58,892
        
Total loans and leases$2,883,428
 $1,470,866
 $978,006
 $5,332,300
Total allowance for loan and lease losses as a percentage of total loans and leases0.97% 1.80% 0.45% 1.10%


 At and for the Nine Months Ended September 30, 2017
 
Commercial
Real Estate
 Commercial Consumer Total
 (In Thousands)
Balance at December 31, 2016$27,645
 $20,906
 $5,115
 $53,666
Charge-offs(294) (6,267) (329) (6,890)
Recoveries476
 800
 263
 1,539
Provision for loan and lease losses1,041
 15,636
 421
 17,098
Balance at September 30, 2017$28,868
 $31,075
 $5,470
 $65,413
        
Total loans and leases$3,029,009
 $1,585,296
 $1,025,135
 $5,639,440
Allowance for loan and lease losses as a percentage of total loans and leases0.95% 1.96% 0.53% 1.16%
 At and for the Nine Months Ended September 30, 2016
 
Commercial
Real Estate
 Commercial Consumer Total
 (In Thousands)
Balance at December 31, 2015$30,151
 $22,018
 $4,570
 $56,739
Charge-offs(1,534) (3,250) (1,254) (6,038)
Recoveries
 495
 605
 1,100
Provision for loan and lease losses(561) 7,201
 451
 7,091
Balance at September 30, 2016$28,056
 $26,464
 $4,372
 $58,892
        
Total loans and leases$2,883,428
 $1,470,866
 $978,006
 $5,332,300
Allowance for loan and lease losses as a percentage of total loans and leases0.97% 1.80% 0.45% 1.10%
TheAt March 31, 2023, the allowance for loan and lease losses was $65.4decreased to $120.9 million, as of September 30, 2017, or 1.16%1.31% of total loans and leases outstanding.outstanding, which included $2.3 million in provision (credit) for loan and lease losses on PCD loans. This compared to an allowance for loan and lease losses of $53.5$98.5 million, or 0.99%1.29% of total loans and leases outstanding, as of December 31, 2016. The increase in the allowance for loan and lease losses and in the allowance for loan and lease losses as a percentage of total2022. Both figures exclude PPP loans and leases from December 31, 2016 to September 30, 2017 was primarily due to the increase in specific reserves for taxi medallion loans as a result of a change in the underlying collateral value, the increase in the specific reserve of a number of commercial loans, the increase in historical loss factors applied to commercial real estate and commercial loan portfolios including taxi medallion loans, and loan growth of $240.6 million for the nine months ended September 30, 2017.
Management believes that the allowance for loan and lease losses as of September 30, 2017 is appropriate based on the facts and circumstances discussed further below.
Commercial Real Estate Loans
The allowance for commercial real estate loan losses was $28.9 million, or 0.95% of total commercial real estate loans outstanding, as of September 30, 2017. This comparedwhich are not subject to an allowance for commercial real estate loan losses of $27.6 million, or 0.95% of total commercial real estate loans outstanding, as of December 31, 2016. Specific reserves on commercial real estate loans were $1.0 thousand and $28.0 thousand as of September 30, 2017 and December 31, 2016, respectively. The $1.3 million increase inreserve since they are guaranteed by the allowance for commercial real estate loan losses during the first nine months of 2017 was primarily driven by originated loan growth of $141.0 million, or 5.1% from December 31, 2016.
The ratio of total criticized and classified commercial real estate loans to total commercial real estate loans increased to 0.84% as of September 30, 2017 from 0.74% as of December 31, 2016. The ratio of originated commercial real estate loans on nonaccrual to total originated commercial real estate loans decreased to 0.16% as of September 30, 2017 from 0.23% as of December 31, 2016.SBA.
Net charge-offs in the commercial real estate loan portfolioloans and leases for the three months ended September 30, 2017March 31, 2023 and September 30, 20162022 were $65.0 thousand and $50.0 thousand, respectively. As a percentage of average commercial real estate

loan portfolio, annualized net charge-offs for the three months ended September 30, 2017 and September 30, 2016 was 0.01% and 0.01%, respectively.
Net recoveries in the commercial real estate loan portfolio totaled $0.2 million for the nine months ended September 30, 2017, compared to net charge-offs of $1.5 million for the nine months ended September 30, 2016. As a percentage of average commercial real estate loan portfolio, annualized net recoveries for the nine months ended September 30, 2017 was 0.01% and annualized charge-offs for the nine month ended September 30, 2016 was 0.07%.
Commercial Loans and Leases
The allowance for commercial loan and lease losses was $31.1 million, or 1.96% of total commercial loans and leases outstanding, as of September 30, 2017, compared to $20.9 million, or 1.40% of total commercial loans and leases outstanding, as of December 31, 2016. Specific reserves on commercial loans and leases increased from $0.1 million as of December 31, 2016 to $7.5 million as of September 30, 2017. The $10.2 million increase in the allowance for commercial loans and lease losses during 2017 was primarily due to the increase in specific reserves for taxi medallion loans as a result of a change in the underlying collateral value, the increase in the specific reserve of a number of commercial loans, the increase in historical loss factors applied to commercial loan portfolios including taxi medallion portfolio in the first nine months of 2017, and the originated loan growth of 96.3 million, or 6.5% from December 31, 2016.  
The ratio of total criticized and classified commercial loans and leases to total commercial loans and leases was 3.07% as of September 30, 2017, compared to 3.27% as of December 31, 2016. The ratio of originated commercial loans and leases on nonaccrual to total originated commercial loans and leases increased to 1.98% as of September 30, 2017 from 1.85% as of December 31, 2016.
Net charge-offs in the commercial loan and lease portfolio for the three months ended September 30, 2017 and September 30, 2016 were $1.9$0.5 million and $0.4$1.9 million, respectively. As a percentage of average commercial loans and leases, annualized net charge-offs for the three months ended September 30, 2017
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March 31, 2023 and September 30, 20162022 were 0.47%0.02% and 0.10%0.11%, respectively.
Net charge-offs The year-over-year decrease in the commercial loan and lease portfolio for the nine months ended September 30, 2017 and September 30, 2016 were $5.5 million and $2.8 million, respectively. As a percentage of average commercial loans and leases, annualized net charge-offs for the nine months ended September 30, 2017 and September 30, 2016 were 0.47% and 0.26%, respectively.
Consumer Loans
The allowance for consumer loan losses, including residential loans and home equity loans and lines of credit, was $5.5 million, or 0.53% of total consumer loans outstanding, as of September 30, 2017, compared to $5.0 million, or 0.51% of consumer loans outstanding, as of December 31, 2016. Specific reserves on consumer loans were $21.0 thousand and $27.0 thousand as of September 30, 2017 and December 31, 2016, respectively. The $0.5 million increase in the allowance for consumer loans during the first nine months of 2017 was primarily driven by the increase in the historical loss factors applied to the consumer portfolios and the originated loan growth of $58.3 million, or 6.8%, from December 31, 2016. The ratio of originated consumer loans on nonaccrual to total originated consumer loans increased to 0.23% as of September 30, 2017 from 0.30% as of December 31, 2016. The risk of loss on a home equity loan is higher since the property securing the loan has often been previously pledged as collateral for a first mortgage loan. The Company gathers and analyzes delinquency data, to the extent that data are available on these first liens, for purposes of assessing the collectability of the second liens held by the Company even if these home equity loans are not delinquent. This data are further analyzed for performance differences between amortizing and non-amortizing home equity loans, the percentage borrowed to total loan commitment and by the amount of payments made by the borrowers. The loss exposure is not considered to be high due to the combinationa decrease in net charge-offs of current property values, the historically low loan-to-value ratios, the low level of losses experienced$1.4 million in the past few years and the low level of loan delinquencies as of September 30, 2017. If the local economy weakens, however, a rise in losses in those loan classes could occur. Historically, losses in these classes have been low.
Net charge-offs in the consumer loan portfolio for the three months ended September 30, 2017 and September 30, 2016 were $33.0 thousand and $95.0 thousand, respectively. Provisions for consumer loans recorded in these periods more than adequately covered charge-offs during those periods.
Net charge-offs in the consumer loan portfolio for the nine months ended September 30, 2017 and September 30, 2016 were $66.0 thousand and $649.0 thousand, respectively. Provisions for consumer loans recorded in these periods more than adequately covered charge-offs during those periods.

equipment financing loans.
The following table sets forth the Company's percent of allowance for loan and lease losses to the total allowance for loan and lease losses, and the percent of loans to total loans for each of the categories listed at the dates indicated.
At March 31, 2023At December 31, 2022
AmountPercent of
Allowance in Each Category
to Total
Allowance
Percent of
Loans
in Each
Category to
Total
Loans
AmountPercent of
Allowance in Each Category
to Total Allowance
Percent of
Loans
in Each
Category to
Total
Loans
(Dollars in Thousands)
Commercial real estate$54,259 45.0 %43.1 %$44,536 45.3 %39.9 %
Multi-family mortgage20,632 17.1 %14.7 %16,885 17.1 %15.1 %
Construction7,801 6.5 %2.9 %6,733 6.8 %2.7 %
Total commercial real estate loans82,692 68.6 %60.7 %68,154 69.2 %57.7 %
Commercial18,711 15.5 %9.3 %12,190 12.4 %9.9 %
Equipment financing13,956 11.5 %13.5 %14,315 14.5 %15.9 %
Condominium association94 0.1 %0.5 %99 0.1 %0.6 %
Total commercial loans32,761 27.1 %23.3 %26,604 27.0 %26.4 %
Residential mortgage3,117 2.6 %11.7 %1,894 1.9 %11.0 %
Home equity1,839 1.5 %3.7 %1,478 1.5 %4.2 %
Other consumer456 0.2 %0.6 %352 0.4 %0.7 %
Total consumer loans5,412 4.3 %16.0 %3,724 3.8 %15.9 %
Total$120,865 100.0 %100.0 %$98,482 100.0 %100.0 %
 At September 30, 2017 At December 31, 2016
 Amount 
Percent of
Allowance
to Total
Allowance
 
Percent of
Loans
in Each
Category to
Total
Loans
 Amount 
Percent of
Allowance
to Total
Allowance
 
Percent of
Loans
in Each
Category to
Total
Loans
 (Dollars in Thousands)
Commercial real estate$19,988
 30.6% 37.6% $19,354
 36.1% 38.1%
Multi-family mortgage5,668
 8.7% 13.2% 5,528
 10.3% 13.5%
Construction3,212
 4.9% 2.9% 2,763
 5.1% 2.5%
Total commercial real estate loans28,868
 44.2% 53.7% 27,645
 51.5% 54.1%
Commercial20,177
 30.8% 12.2% 10,096
 18.8% 11.8%
Equipment financing10,482
 16.0% 14.9% 10,345
 19.3% 14.8%
Condominium association416
 0.6% 1.0% 465
 0.9% 1.1%
Total commercial loans and leases31,075
 47.4% 28.1% 20,906
 39.0% 27.7%
Residential mortgage2,990
 4.6% 11.6% 2,587
 4.8% 11.6%
Home equity2,305
 3.5% 6.3% 2,356
 4.4% 6.3%
Other consumer175
 0.3% 0.3% 172
 0.3% 0.3%
Total consumer loans5,470
 8.4% 18.2% 5,115
 9.5% 18.2%
Total$65,413
 100.0% 100.0% $53,666
 100.0% 100.0%
Management believes that the allowance for loan and lease losses as of March 31, 2023 is appropriate.
Investment Securities
The investment portfolio exists primarily for liquidity purposes, and secondarily as sourcesa source of interest and dividend income, interest-rate risk management and tax planning as a counterbalance to loan and deposit flows. Investment securities are utilized as part of the Company's asset/liability management and may be sold in response to, or in anticipation of, factors such as changes in market conditions and interest rates, security prepayment rates, deposit outflows, liquidity concentrations and regulatory capital requirements.
The investment policy of the Company, which is reviewed and approved by the Board of Directors on an annual basis, specifies the types of investments that are acceptable, required investment ratings by at least one nationally recognized rating agency, concentration limits and duration guidelines. Compliance with the investment policy is monitored on a regular basis. In general, the Company seeks to maintain a high degree of liquidity and targets cash, cash equivalents and investment securities available-for-sale balances between 10% and 30% of total assets.
Cash, cash equivalents, and investment securities increased $15.6$513.6 million, or 3.1%197.6% on an annualized basis, to $694.0 million$1.6 billion as of September 30, 2017March 31, 2023, from $678.4 million$1.04 billion as of December 31, 2016.2022. The increase was primarily driven by ana increase in deposit balances, offset by growth in loans and leasesshort-term investments and investment securities.securities available for sale. Cash, cash equivalents, and investment securities were 10.4%13.5% of total assets as of September 30, 2017,March 31, 2023, compared to 10.5%11.32% of total assets at December 31, 2016.2022.

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The following table sets forth certain information regarding the amortized cost and market value of the Company's investment securities at the dates indicated:
 At March 31, 2023At December 31, 2022
 Amortized
Cost
Fair ValueAmortized
Cost
Fair Value
 (In Thousands)
Investment securities available-for-sale:    
GSE debentures$198,454 $177,222 $176,751 $152,422 
GSE CMOs69,766 67,684 19,977 18,220 
GSE MBSs206,416 188,793 159,824 140,576 
Corporate debt obligations37,661 37,296 14,076 13,764 
U.S. Treasury bonds598,023 572,250 362,850 331,307 
Foreign government obligations500 475 500 477
Total investment securities available-for-sale$1,134,102 $1,067,032 $733,978 $656,766 
 At September 30, 2017 At December 31, 2016
 
Amortized
Cost
 Fair Value 
Amortized
Cost
 Fair Value
 (In Thousands)
Investment securities available-for-sale:       
GSE debentures$139,443
 $139,344
 $98,122
 $97,020
GSE CMOs138,137
 135,280
 161,483
 158,040
GSE MBSs182,913
 182,118
 214,946
 212,915
SBA commercial loan asset- backed securities77
 77
 107
 107
Corporate debt obligations58,638
 58,891
 48,308
 48,485
U.S. Treasury bonds4,822
 4,811
 4,801
 4,737
Trust preferred securities1,471
 1,403
 1,469
 1,358
Total debt securities525,501
 521,924
 529,236
 522,662
Marketable equity securities975
 986
 966
 972
Total investment securities available-for-sale$526,476
 $522,910
 $530,202
 $523,634
Investment securities held-to-maturity:       
GSE debentures$38,622
 $38,072
 $14,735
 $14,101
GSE MBSs14,788
 14,643
 17,666
 17,479
Municipal obligations53,828
 54,013
 54,219
 53,204
Foreign government obligations500
 492
 500
 487
Total investment securities held-to-maturity$107,738
 $107,220
 $87,120
 $85,271


The fair value of investment securities is based principally on market prices and dealer quotes received from third-party, nationally-recognized pricing services for identical investment securities such as U.S. Treasury and agency securities. The Company's marketable equity securities are priced this way and are included in Level 1.1 of the fair value hierarchy in accordance with ASC 820. These prices are validated by comparing the primary pricing source with an alternative pricing source when available. When quoted market prices for identical securities are unavailable, the Company uses market prices provided by independent pricing services based on recent trading activity and other observable information, including but not limited to market interest-rate curves, referenced credit spreads and estimated prepayment speeds where applicable. These investments include certain U.S. and government agency debt securities, municipal and corporate debt securities, GSE residential MBSs and CMOs, and trust preferred securities, all of which are included in Level 2. Certain fair values are estimated using pricing models and are included in Level 3.


Additionally, management reviews changes in fair value from period to period and performs testing to ensure that prices received from the third parties are consistent with their expectation of the market. Changes in the prices obtained from the pricing service are analyzed from month to month, taking into consideration changes in market conditions including changes in mortgage spreads, changes in U.S. Treasury security yields and changes in generic pricing of 15-year and 30-year securities. Additional analysis may include a review of prices provided by other independent parties, a yield analysis, a review of average life changes using Bloomberg analytics and a review of historical pricing for the particular security.


Maturities, calls and principal repayments for investment securities available-for-sale totaled $55.0$33.1 million for the ninethree months ended September 30, 2017March 31, 2023 compared to $76.2$36.3 million for the same period in 2016. There were no sales2022. For the three months ended March 31, 2023, the Company sold $224.8 million of investment securities available-for-sale foravailable-for-sale. For the ninesame period in 2022, the Company did not sell any investment securities available-for-sale. For the three months ended September 30, 2017 and 2016. For the nine months ended September 30, 2017,March 31, 2023, the Company purchased $52.4$274.4 million of investment securities available-for-sale, compared to $77.3 million in purchases of investment securities available-for-sale for the same period in 2016.

Maturities, calls and principal repayments for investment securities held-to-maturity totaled $3.2 million for the nine months ended September 30, 2017 compared to $41.4$84.1 million for the same period in 2016. There were no sales of investment securities held-to-maturity for the nine months ended September 30, 2017 and 2016. For the nine months ended September 30, 2017, the Company purchased $23.9 million of investment securities held-to-maturity, compared to $25.0 million in purchases of investment securities held-to-maturity for the same period in 2016.

2022.
As of September 30, 2017,March 31, 2023, the fair value of all investment securities available-for-sale was $522.9 million and carried a total of $3.6$1.1 billion with $67.1 million of net unrealized losses, compared to a fair value of $523.6$656.8 million and net unrealized losses of $6.6$77.2 million as of December 31, 2016.2022. As of September 30, 2017, $377.4March 31, 2023, $763.4 million, or 72.2%72.6%, of the portfolio, had gross unrealized losses of $5.0$69.0 million. This compares to $389.0$630.5 million, or 74.3%96.0%, of the portfolio with gross unrealized losses of $8.0$77.5 million as of December 31, 2016. The Company's unrealized loss position has decreased in 2017 driven by lower long-term interest rates.
As of September 30, 2017, the fair value of all investment securities held-to-maturity was $107.2 million and carried a total of $0.5 million of net unrealized losses, compared to a fair value of $85.3 million and net unrealized losses of $1.8 million as of December 31, 2016. As of September 30, 2017, $61.2 million, or 57.1%, of the portfolio, had gross unrealized losses of $0.9 million. This compares to $82.0 million, or 96.1%, of the portfolio with gross unrealized losses of $1.9 million as of December 31, 2016.2022. The Company's unrealized loss position decreased in 20172023 primarily driven by lower long-term interesta rebalancing of the portfolio to more closely align it with current market rates.
Management believes that these negative differences between amortized cost and fair value do not include credit losses, but rather differences in interest rates between the time of purchase and the time of measurement. It is more likely than not that the Company will not sell or be required to sell the investment securities before recovery, and, as a result, it will recover the amortized cost basis of the investment securities. As such, management has determined that the securities are not other-than-temporarily impaired as of September 30, 2017. If market conditions for securities worsen or the creditworthiness of the underlying issuers deteriorates, it is possible that the Company may recognize additional other-than-temporary impairments in future periods. For additional discussion on how the Company validates fair values provided by the third-party pricing service, see Note 11, “Fair Value of Financial Instruments.”
Restricted Equity Securities
FHLBB and FHLBNY Stock—The Company invests in the stock of the FHLBB and FHLBNY as one of the requirements to borrow. The Company generally maintains an excess balance of capital stock, which allows for additional borrowing capacity at each of the Banks. As of September 30, 2017,March 31, 2023 and December 31, 2022, the Company did not have an excess balance of capital stock is $3.9 million, as compared to no excess balance at December 31, 2016. On December 30th, 2016, the FHLBB initiated a stock buyback which reduced the Company's excess balance to zero.stock.
As of September 30, 2017,March 31, 2023, the Company owned stock in the FHLBB with a carrying value of $45.2$61.8 million, a decreasean increase of $2.1$8.9 million from $47.3$52.9 million as of December 31, 2016.2022. As of September 30, 2017,March 31, 2023, the FHLBB had total assets of $61.0$80.2 billion and total capital of $3.2$3.8 billion, of which $1.3$1.7 billion was retained earnings. As of March 31, 2023, the Company owned stock in the FHLBNY with a carrying value of $2.8 million. As of March 31, 2023, the FHLBNY had total assets of $185.9 billion and total capital of $8.9 billion, of which $2.2 billion was retained earnings. The FHLBB stated that it remained in compliance
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with all regulatory capital ratios as of September 30, 2017March 31, 2023 and was classified as "adequately capitalized" by its regulator, based on the FHLBB's financial information as of June 30, 2017.December 31, 2022. The FHLBNY stated that it met all of its regulatory capital ratios at March 31, 2023
Federal Reserve Bank Stock—The Company invests in the stock of the Federal Reserve Bank of Boston and the Federal Reserve Bank of New York, as a condition ofto the Banks' membership for the Banks in the Federal Reserve System. As of September 30, 2017 andMarch 31, 2023, the Company owned stock in the Federal Reserve Bank with a carrying value of $21.5 million. As of December 31, 2016,2022, the Company owned stock in the Federal Reserve Bank of Boston with a carrying value of $16.8$18.2 million.
Other Stock—The Company invests in a small number of other restricted equity securities which included Northeast Retirement Services, Inc. ("NRS")includes American Financial Exchange and Statewide Zone. As of March 31, 2023, the Savings Bank Life Insurance Company of Massachusetts ("SBLI").
The Company, through its wholly owned subsidiary, Brookline Securities Corp., ("Brookline Securities") held 9,721 shares ofstock in other restricted equity securities with a carrying value of NRS. This investment was recorded at cost of $122 thousand as no readily determinable fair value was available. On$0.2 million, unchanged from December 5, 2016, Community Bank Systems, Inc. ("CBU") announced entry into a merger agreement to acquire NRS. After receiving stockholder and regulatory approvals, CBU completed the acquisition of NRS on February 3, 2017. The Company exchanged the 9,721 shares of NRS and received $319.04 in cash and 14.876 shares of CBU common stock for each share of NRS held. As part of the merger agreement, the Company was restricted to selling 5,071 shares per day in the open market. The Company completed the sale of all CBU shares during the first quarter of 2017. The Company recognized a gain on the sale of securities of $11.4 million for the quarter ending March 31, 2017.2022.
Brookline Securities held one Class A Common Stock share and 2,070 Class B Common Stock shares of the Savings Bank Life Insurance Company of Massachusetts ("SBLI"). In July 2017, SBLI converted from a Massachusetts stock insurance company to a Massachusetts mutual insurance company and, as a result, Brookline Securities received $500 for one share of Class A Common Stock and $128 per share for its 2,070 shares of Class B Common Stock of SBLI, in exchange for $265.5 thousand in cash. Brookline Securities recognized a nominal gain on the exchange.


Deposits

The following table presents the Company's deposit mix at the dates indicated.
 At March 31, 2023At December 31, 2022
 AmountPercent
of Total
Weighted
Average
Rate
AmountPercent
of Total
Weighted
Average
Rate
 (Dollars in Thousands)
Non-interest-bearing deposits:
Demand checking accounts$1,899,370 22.5 %— %$1,802,518 27.6 %— %
Interest-bearing deposits:   
NOW accounts757,411 9.0 %0.48 %544,118 8.3 %0.18 %
Savings accounts1,268,375 15.0 %1.83 %762,271 11.7 %0.70 %
Money market accounts2,185,971 25.8 %2.20 %2,174,952 33.4 %1.63 %
Certificate of deposit accounts1,362,970 16.1 %2.65 %928,143 14.2 %1.68 %
Brokered deposit accounts982,365 11.6 %4.29 %310,144 4.8 %3.00 %
Total interest-bearing deposits6,557,092 77.5 %2.33 %4,719,628 72.4 %1.41 %
Total deposits$8,456,462 100.0 %1.82 %$6,522,146 100.0 %1.02 %
 At September 30, 2017 At December 31, 2016
 Amount 
Percent
of Total
 
Weighted
Average
Rate
 Amount 
Percent
of Total
 
Weighted
Average
Rate
 (Dollars in Thousands)
Non-interest-bearing deposits:           
Demand checking accounts$905,472
 18.8% % $900,474
 19.5% %
Interest-bearing deposits:           
NOW accounts318,284
 6.6% 0.07% 323,160
 7.0% 0.07%
Savings accounts665,558
 13.8% 0.20% 613,061
 13.3% 0.20%
Money market accounts1,749,040
 36.5% 0.53% 1,733,359
 37.6% 0.47%
Certificate of deposit accounts1,167,329
 24.3% 1.19% 1,041,022
 22.6% 1.04%
Total interest-bearing deposits3,900,211
 81.2% 0.63% 3,710,602
 80.5% 0.55%
Total deposits$4,805,683
 100.0% 0.52% $4,611,076
 100.0% 0.44%

Total deposits increased $194.6 million, or 5.6% on an annualized basis,$2.0 billion to $4.8$8.5 billion as of September 30, 2017,March 31, 2023, compared to $4.6$6.5 billion as of December 31, 2016.2022. Deposits as a percentage of total assets increased to 71.9%73.4% as of September 30, 2017, asMarch 31, 2023, compared to 71.6%71.0% as of December 31, 2016.2022.

During the three months ended March 31, 2023, core deposits increased $827.3 million. The increase inratio of core deposits isto total deposits decreased from 81.0% as of December 31, 2022 to 72.3% as of March 31, 2023, primarily due to the growtha decrease in certificatepercentage of money market accounts and demand checking accounts to total deposits.

Certificate of deposit accounts and savings accounts.
Asincreased $0.5 billion to $1.4 billion as of September 30, 2017, the Company had $260.8 million of brokered depositsMarch 31, 2023, compared to $203.4$0.9 billion as of December 31, 2022. Certificate of deposit accounts increased as a percentage of total deposits to 16.1% as of March 31, 2023 from 14.2% as of December 31, 2022.

Brokered deposits increased $672.2 million to $982.4 million as of March 31, 2023, compared to $310.1 million as of December 31, 2016.2022. Brokered deposits increased as a percentage of total deposits to 11.6% as of March 31, 2023 from 4.8% as of December 31, 2022. The increase in brokered deposits was driven by the purchase of brokered certificates of deposit. Brokered deposits allow the Company to seek additional funding by attracting deposits from outside the Company's core market. The Company's investment policy limits the total amount of brokered deposits the Company may hold to 15% of total assets. Brokered deposits are included in the certificate of deposit balance, which increased $126.3 million, or 16.2% on an annualized basis, during the nine months ended September 30, 2017. Certificates of deposit have also increased as a percentage of total deposits to 24.3% as of September 30, 2017 from 22.6% as of December 31, 2016.
During the nine months ended September 30, 2017, core deposits increased $68.3 million, or 2.6% on an annualized basis. The ratio of core deposits to total deposits decreased from 77.4% as of December 31, 2016 to 75.7% as of September 30, 2017, primarily due to the shift in deposit mix and increase in brokered deposits.
The following table sets forth the distribution of the average balances of the Company's deposit accounts for the periods indicated and the weighted average interest rates on each category of deposits presented. Averages for the periods presented are based on daily balances.
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Three Months Ended September 30,Three Months Ended March 31,
2017 201620232022
Average
Balance
 
Percent
of Total
Average
Deposits
 
Weighted
Average
Rate
 
Average
Balance
 
Percent
of Total
Average
Deposits
 
Weighted
Average
Rate
Average
Balance
Percent
of Total
Average
Deposits
Weighted
Average
Rate
Average
Balance
Percent
of Total
Average
Deposits
Weighted
Average
Rate
(Dollars in Thousands)(Dollars in Thousands)
Core deposits:           Core deposits:
Non-interest-bearing demand checking accounts$918,054
 19.3% % $863,854
 19.1% %Non-interest-bearing demand checking accounts$1,930,162 23.7 %— %$1,880,039 26.7 %— %
NOW accounts321,731
 6.8% 0.07% 295,762
 6.6% 0.07%NOW accounts810,333 9.9 %0.45 %589,891 8.4 %0.07 %
Savings accounts605,303
 12.7% 0.20% 566,192
 12.5% 0.22%Savings accounts1,160,003 14.2 %0.88 %933,173 13.2 %0.09 %
Money market accounts1,765,610
 37.2% 0.51% 1,678,937
 37.2% 0.45%Money market accounts2,366,235 29.0 %2.08 %2,416,577 34.3 %0.26 %
Total core deposits3,610,698
 76.0% 0.29% 3,404,745
 75.4% 0.26%Total core deposits6,266,733 76.9 %0.99 %5,819,680 82.6 %0.13 %
Certificate of deposit accounts1,139,699
 24.0% 1.17% 1,112,831
 24.6% 1.01%Certificate of deposit accounts1,346,761 16.5 %2.25 %1,091,729 15.5 %0.69 %
Brokered deposit accountsBrokered deposit accounts534,527 6.6 %4.82 %132,751 1.9 %0.16 %
Total deposits$4,750,397
 100.0% 0.50% $4,517,576
 100.0% 0.45%Total deposits$8,148,021 100.0 %1.44 %$7,044,160 100.0 %0.21 %


 Nine Months Ended September 30,
 2017 2016
 
Average
Balance
 
Percent
of Total
Average
Deposits
 
Weighted
Average
Rate
 
Average
Balance
 
Percent
of Total
Average
Deposits
 
Weighted
Average
Rate
 (Dollars in Thousands)
Core deposits:           
Non-interest-bearing demand checking accounts$905,684
 19.4% % $829,659
 18.7% %
NOW accounts319,633
 6.8% 0.07% 289,908
 6.5% 0.07%
Savings accounts603,814
 12.9% 0.20% 561,798
 12.7% 0.24%
Money market accounts1,759,449
 37.6% 0.49% 1,654,700
 37.2% 0.45%
Total core deposits3,588,580
 76.7% 0.28% 3,336,065
 75.1% 0.27%
Certificate of deposit accounts1,088,011
 23.3% 1.12% 1,107,600
 24.9% 0.99%
Total deposits$4,676,591
 100.0% 0.47% $4,443,665
 100.0% 0.45%
As of September 30, 2017March 31, 2023 and December 31, 2016,2022, the Company had outstanding certificates of deposit of $100,000$250,000 or more, maturing as follows:
At September 30, 2017 At December 31, 2016At March 31, 2023At December 31, 2022
Amount 
Weighted
Average Rate
 Amount 
Weighted
Average Rate
AmountWeighted
Average Rate
AmountWeighted
Average Rate
(Dollars in Thousands)(Dollars in Thousands)
Maturity period:       Maturity period:
Six months or less$150,892
 0.86% $134,783
 0.82%Six months or less$150,906 2.69 %$108,100 1.32 %
Over six months through 12 months137,264
 1.12% 79,543
 0.92%Over six months through 12 months123,449 3.05 %62,489 1.82 %
Over 12 months224,115
 1.68% 222,342
 1.44%Over 12 months128,346 3.67 %101,654 2.96 %
Total certificate of deposit of $100,000 or more$512,271
 1.29% $436,668
 1.15%
Total certificate of deposit of $250,000 or moreTotal certificate of deposit of $250,000 or more$402,701 3.11 %$272,243 2.05 %
The following table presents the Company's insured and uninsured deposit mix at the date indicated.
At March 31, 2023
(Dollars in Millions)
CommercialConsumerMunicipalBrokeredTotal%
Insured or Collateralized$1,540 $3,043 $339 $982 $5,904 70 %
Uninsured1,625 927 — — 2,552 30 %
Total$3,165 $3,970 $339 $982 $8,456 100 %
Composition37 %47 %%12 %100 %
Borrowed Funds
The following table sets forth certain information regarding advances from the FHLBB,FHLB, subordinated debentures and notes and other borrowed funds for the periods indicated:
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Table of Contents
Three Months Ended 
 September 30,
 Nine Months Ended 
 September 30,
Three Months Ended 
 March 31,
2017 2016 2017 201620232022
(Dollars in Thousands)(Dollars in Thousands)
Borrowed funds:       Borrowed funds:
Average balance outstanding$1,037,778
 $1,050,849
 $1,046,054
 $1,013,865
Average balance outstanding$1,507,084 $317,873 
Maximum amount outstanding at any month-end during the period1,070,681
 1,050,118
 1,093,693
 1,050,118
Maximum amount outstanding at any month-end during the period1,630,102 392,897 
Balance outstanding at end of period985,896
 1,022,653
 985,896
 1,022,653
Balance outstanding at end of period1,630,102 392,897 
Weighted average interest rate for the period1.64% 1.52% 1.59% 1.55%Weighted average interest rate for the period4.55 %1.88 %
Weighted average interest rate at end of period1.67% 1.56% 1.67% 1.56%Weighted average interest rate at end of period4.68 %1.76 %
Advances from the FHLBBFHLB Boston and FHLB New York
On a long-term basis, the Company intends to continue to increase its core deposits. The Company also uses FHLBBFHLB borrowings and other wholesale borrowingborrowings as part of the Company's overall strategy to fund loan growth and manage interest-rateinterest rate risk and liquidity. The advances are secured by a blanket security agreement which requires the Banks to maintain certain qualifying assets as collateral, principally mortgage loans and securities in an aggregate amount at least equal to outstanding advances. The maximum amount that the FHLBBFHLB banks will advance to member institutions, including the Company, fluctuates from time to time in accordance with the policies of the FHLBB. The Company may also borrow from the FRB's "discount window" as necessary.FHLB banks.

FHLBBFHLB borrowings decreased by $38.3increased $220.6 million to $872.6 million$1.5 billion as of September 30, 2017 from theMarch 31, 2023 with a total capacity of $2.2 billion. As of December 31, 2016 balance2022, FHLB borrowings stood at $1.2 billion with a total capacity of $910.8 million. The decrease in FHLBB borrowings was primarily due to a reduction in new advances from the FHLBB, as the Company is utilizing other funding sources to support loan growth.$1.7 billion.
Subordinated Debentures and Notes
TheAs part of the acquisition of BankRI, the Company acquired two $5.0 million subordinated debentures due on June 26, 2033 and March 17, 2034, respectively. The Company is obligated to pay 3-month LIBOR plus 3.10% and 3-month LIBOR plus 2.79%, respectively, on a quarterly basis until the debentures mature.
The Company sold $75.0 million of 6.0% fixed-to-floating rate subordinated notes due September 15, 2029. The Company is obligated to pay 6.0% interest semiannually between September 2014 and September 2024. Subsequently, the Company is obligated to pay 3-month LIBOR plus 3.315% quarterly until the notes mature in September 2029.
The following table summarizes the Company's subordinated debentures and notes at the dates indicated.
Carrying Amount
Issue DateRateMaturity DateNext Call DateMarch 31,
2023
December 31, 2022
 (Dollars in Thousands)
June 26, 2003Variable;
3-month LIBOR + 3.10%
June 26, 2033June 25, 2023$4,891 $4,887 
March 17, 2004Variable;
3-month LIBOR + 2.79%
March 17, 2034June 19, 20234,837 4,830 
September 15, 20146.0% Fixed-to-Variable;
3-month LIBOR + 3.315%
September 15, 2029September 15, 202474,352 74,327 
Total$84,080 $84,044 
66

        Carrying Amount
Issue Date Rate Maturity Date Next Call Date September 30, 2017 December 31, 2016
  (Dollars in Thousands)
June 26, 2003 
Variable;
3-month LIBOR + 3.10%
 June 26, 2033 December 26, 2017 $4,772
 $4,752
March 17, 2004 
Variable;
3-month LIBOR + 2.79%
 March 17, 2034 December 18, 2017 4,657
 4,628
September 15, 2014 
6.0% Fixed-to-Variable;
3-month LIBOR + 3.315%
 September 15, 2029 September 15, 2024 73,800
 73,725
      Total $83,229
 $83,105
Table of Contents
The above carrying amounts of the subordinated debentures included $0.6$0.3 million of accretion adjustments and $1.2$0.6 million of capitalized debt issuance costs as of September 30, 2017.March 31, 2023. This compares to $0.6$0.3 million of accretion adjustments and $1.3$0.7 million of capitalized debt issuance costs as of December 31, 2016.2022.
Other Borrowed Funds
In addition to advances from the FHLBBFHLB and subordinated debentures and notes, the Company utilizes other funding sources as part of the overall liquidity strategy. Those funding sources include repurchase agreements, and committed and uncommitted lines of credit with several financial institutions.
The Company periodically enters into repurchase agreements with its larger deposit and commercial customers as part of its cash management services which are typically overnight borrowings. Repurchase agreements with customers decreased $20.1$3.3 million to $30.1$48.7 million as of September 30, 2017March 31, 2023 from $50.2$52.0 million as of December 31, 2016.2022.
The Company has access to a $12.0$30.0 million committed line of credit as of September 30, 2017.March 31, 2023. As of September 30, 2017March 31, 2023 and December 31, 2016,2022, the Company did not have any borrowings on this committed line of credit outstanding.credit.
The Banks also have access to funding through several uncommitted lines of credit of $204.0$784.0 million. As of September 30, 2017March 31, 2023 and December 31, 2016,2022, the Company did not have any borrowings on theseoutstanding uncommitted lines of credit.
Derivative Financial Instruments
The Company has entered into loan level derivatives, risk participation agreements, and foreign exchange contracts with certain of its commercial customers and concurrently enters into offsetting swaps with third-party financial institutions. The Company may also, from time to time, enter into risk participation agreements. The Company did not have derivative fair value hedges or derivativeuses interest rate futures that are designated and qualify as cash flow hedges at September 30, 2017 or December 31, 2016. hedging instruments.
The following table summarizes certain information concerning the Company's loan level derivatives, interest rate derivatives, risk participation agreements, and foreign exchange contracts at September 30, 2017March 31, 2023 and December 31, 2016:2022:

At March 31, 2023At December 31, 2022
(Dollars in Thousands)
Interest rate derivatives (Notional amounts):$225,000 $150,000 
Loan level derivatives (Notional principal amounts):
Receive fixed, pay variable$1,773,735 $1,489,709 
Pay fixed, receive variable1,773,735 1,489,709 
Risk participation-out agreements511,464 393,624 
Risk participation-in agreements74,757 75,223 
Foreign exchange contracts (Notional amounts):
Buys foreign currency, sells U.S. currency$2,631 $2,383 
Sells foreign currency, buys U.S. currency2,650 2,400 
Fixed weighted average interest rate from the Company to counterparty2.86 %2.65 %
Floating weighted average interest rate from counterparty to the Company5.14 %4.68 %
Weighted average remaining term to maturity (in months)82 69 
Fair value: 
Recognized as an asset:
Interest rate derivatives$854 $34 
Loan level derivatives104,707 108,963 
Risk participation-out agreements1,946 347 
Foreign exchange contracts339 130 
Recognized as a liability:
Interest rate derivatives$2,285 $3,170 
Loan level derivatives104,707 108,963 
Risk participation-in agreements39 31 
Foreign exchange contracts320 112 
67
 At September 30, 2017At December 31, 2016
 (Dollars in Thousands)
Loan level derivatives (Notional principal amounts):  
Receive fixed, pay variable$465,470
$383,780
Pay fixed, receive variable465,470
383,780
Risk participation-out agreements28,858
16,961
Risk participation-in agreements3,825

Foreign exchange contracts (Notional amounts):  
Buys foreign currency, sells U.S. currency$1,200
$195
Sells foreign currency, buys U.S. currency1,208
195
Fixed weighted average interest rate from the Company to counterparty4.15%4.13%
Floating weighted average interest rate from counterparty to the Company3.21%2.77%
Weighted average remaining term to maturity (in months)82
91
Fair value:  
Recognized as an asset:  
Loan level derivatives$9,975
$9,738
Risk participation-out agreements49
20
Foreign exchange contracts22

Recognized as a liability:  
Loan level derivatives$9,975
$9,738
Risk participation-in agreements14

Foreign exchange contracts14


As
Table of December 31, 2016, the Company held no risk participation-in agreements. As of December 31, 2016, the fair value of the foreign exchange contracts was nominal.Contents
Stockholders' Equity and Dividends
The Company's total stockholders' equity was $804.8 million$1.2 billion as of September 30, 2017,March 31, 2023, representing a $109.2$172.9 million increase compared to $695.5$992.1 million at December 31, 2016.2022. The increase for the three months ended March 31, 2023, primarily reflects the PCSB purchase of $168 million, unrealized gain on securities available-for-sale of $7.9 million, net income attributable to the Company of $43.7$7.6 million, for the nine months ended September 30, 2017, issuance of common stock of $81.9 million, an unrealized gain on securities available-for-sale of $1.9 million, an increase of $1.0 million related to stock-based compensation, which was partially offset by dividends paid by the Company of $20.1 million in that same period.$12 million.
Stockholders' equity represented 12.04%10.11% of total assets as of September 30, 2017March 31, 2023 and 10.80% of total assets as of December 31, 2016.2022. Tangible stockholders' equity (total stockholders' equity less goodwill and identified intangible assets, net) represented 10.09%7.94% of tangible assets (total assets less goodwill and identified intangible assets, net) as of September 30, 2017March 31, 2023 and 8.73%9.20% as of December 31, 2016.2022.
On November 10, 2021, the Company's Board of Directors (the "Board") approved a stock repurchase program authorizing management to repurchase up to $20.0 million of the Company's common stock, commencing on November 15, 2021 and ending on December 31, 2022. On June 24, 2022, the Company suspended the program. As of June 24, 2022, 956,341 shares of the Company's common stock were repurchased by the Company at a weighted average price of $14.41.
The dividend payout ratio was 44.90%158.33% for the three months ended September 30, 2017,March 31, 2023, compared to 46.60%39.28% for the same period of 2016 and 46.09% for the nine months ended September 30, 2017, compared to 48.66% for the same period of 2016.in 2022.
Results of Operations
The primary drivers of the Company's net income are net interest income, which is strongly affected by the net yield on and growth of interest-earning assets and liabilities, ("net interest margin"), the quality of the Company's assets, its levels of non-interest income and non-interest expense, and its tax provision.
The Company's net interest income represents the difference between interest income earned on its investments, loans and leases, and its cost of funds. Interest income is dependent on the amount of interest-earning assets outstanding during the period and the yield earned thereon. Cost of funds is a function of the average amount of deposits and borrowed money outstanding during the year and the interest rates paid thereon. The net interest margin is calculated by dividing net interest income by average interest-earning assets. Net interest spread is the difference between the average rate earned on interest-earning assets and the average rate paid on interest-bearing liabilities. The increases or decreases, as applicable, in the

components of interest income and interest expense, expressed in terms of fluctuation in average volume and rate, are summarized under "Rate/Volume Analysis" below. Information as to the components of interest income, interest expense and average rates is provided under "Average Balances, Net Interest Income, Interest-Rate Spread and Net Interest Margin" below.
Because the Company's assets and liabilities are not identical in duration and in repricing dates, the differential between the two is vulnerable to changes in market interest rates as well as the overall shape of the yield curve. These vulnerabilities are inherent to the business of banking and are commonly referred to as "interest-rate risk." How interest-rate risk is measured and, once measured, how much interest-rate risk is taken on, are based on numerous assumptions and other subjective judgments. See the discussion in “Item 3. Quantitative and Qualitative Disclosures about Market Risk” below.
The quality of the Company's assets also influences its earnings. Loans and leases that are not paid on a timely basis and exhibit other weaknesses can result in the loss of principal and/or interest income. Additionally, the Company must make timely provisions to the allowance for loan and lease losses based on estimates of probable losses inherent in the loan and lease portfolio. These additions, which are charged against earnings, are necessarily greater when greater probable losses are expected. Further, the Company incurs expenses as a result of resolving troubled assets. These variables reflect the "credit risk" that the Company takes on in the ordinary course of business and are further discussed under "Financial Condition—Asset Quality" above.
Net Interest Income
Net interest income increased $4.4$16.2 million to $56.8$86.0 million for the three months ended September 30, 2017March 31, 2023 from $52.4$69.8 million for the three months ended September 30, 2016.March 31, 2022. This overall increase reflects a $5.2$50.2 million increase in interest income on loans and leases, andalong with a $0.3$7.2 million increase in interest income on investmentdebt securities, short term investments and restricted equity securities, offset by a $1.2$41.2 million increase in interest expense on depositdeposits and borrowings, which is reflective of the various portfolios repricing and replacing balances into the currentrising interest rate environment. Refer to “Results of Operations - Comparison of the Three-Month Period Ended September 30, 2017March 31, 2023 and September 30, 2016March 31, 2022 — Interest Income” and “Results of Operations - Comparison of the Three-Month Period Ended September 30, 2017March 31, 2023 and September 30, 2016March 31, 2022 — Interest Expense Deposit-Deposit and Borrowed Funds” below for more details.
Net interest income increased $13.7 million to $165.5 million for the nine months ended September 30, 2017 from $151.8 million for the nine months ended September 30, 2016. This overall increase reflects a $15.3 million increase in interest income on loans and leases and a $0.6 million increase in interest income on investment securities, offset by a $2.3 million increase in interest expense on deposit and borrowings, which is reflective of the various portfolios repricing and replacing balances into the current interest rate environment. Refer to “Results of Operations - Comparison of the Nine-Month Period Ended September 30, 2017 and September 30, 2016 — Interest Income” and “Results of Operations - Comparison of the Nine-Month Period Ended September 30, 2017 and September 30, 2016 — Interest Expense Deposit and Borrowed Funds” below for more details.
Net interest margin increaseddecreased by 913 basis points to 3.57%3.36% for the three months ended September 30, 2017March 31, 2023 from 3.48%3.49% for the three months ended September 30, 2016.March 31, 2022. Excluding PPP loans, net interest margin decreased by 8 basis points to 3.36% for the three months ended March 31, 2023 from 3.44% for three months ended March 31, 2022. The Company's weighted average
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interest rate on loans (prior to purchase accounting adjustments) increased to 4.52%5.33% for the three months ended September 30, 2017March 31, 2023 from 4.36%4.00% for the three months ended September 30, 2016. Interest amortization and accretion on acquired loans totaled $0.2 million and contributed 1 basis point to loan yields during the three months ended September 30, 2017 compared to $0.9 million, or 6 basis points, for the three months ended September 30, 2016. The increase in the net interest margin is the result of repricing interest-earning assets in a slightly higher rate environment offset by a comparable increase in funding costs.
Net interest margin increased by 10 basis points to 3.56% for the nine months ended September 30, 2017 from 3.46% for the nine months ended September 30, 2016. The Company's weighted average interest rate on loans (prior to purchase accounting adjustments) increased to 4.44% for the nine months ended September 30, 2017 from 4.32% for the nine months ended September 30, 2016. Interest amortization and accretion on acquired loans totaled $0.6 million and contributed 1 basis point to loan yields during the nine months ended September 30, 2017, compared to $1.3 million, or 3 basis points, for the nine months ended September 30, 2016. The increase in the net interest margin is the result of repricing and originating interest-earning assets in a higher rate environment offset by an increase in funding costs.March 31, 2022.
The yield on interest-earning assets increased to 4.25%5.10% for the three months ended September 30, 2017March 31, 2023 from 4.10%3.70% for the three months ended September 30, 2016. ThisMarch 31, 2022. The increase is the result of higher yields on loans and leases partially offset by a decrease in prepayment penalties and late charges.investments. During the three months ended September 30, 2017,March 31, 2023, the Company recorded $0.8$0.7 million in prepayment penalties and late charges, which contributed 53 basis points to yields on interest-earning assets, in the three months ended September 30, 2017 compared to $1.2$1.5 million, or 8 basis points, for the three months ended September 30, 2016.March 31, 2022.


The yield on interest-earning assets increased to 4.17% for the nine months ended September 30, 2017 from 4.05% for the nine months ended September 30, 2016. This increase is the result of higher yields on loans and leases. During the nine months ended September 30, 2017, the Company recorded $2.6 million in prepayment penalties and late charges, which contributed 6 basis points to yields on interest-earning assets, compared to $2.7 million, or 6 basis points, in the nine months ended September 30, 2016.

The overall cost of funds (including non-interest-bearing demand checking accounts) increased 6165 basis points to 0.71%1.94% for the three months ended September 30, 2017March 31, 2023 from 0.65%0.29% for the three months ended September 30, 2016. The overall cost of funds increased 3 basis points to 0.68% for the nine months ended September 30, 2017 from 0.65% for the nine months ended September 30, 2016.March 31, 2022. Refer to "Financial Condition - Borrowed Funds" above for more details.

Management seeks to position the balance sheet to be neutral to asset sensitive to changes in interest rates. Since the end of 2016,From 2017 through 2019, short term interest rates have risenrose while at the same time net interest income, net interest spread, and net interest margin have also increased. During 2020, interest rates declined sharply in response to the economic impact of the COVID-19 pandemic, and began to increase in the first quarter of 2022. In general,recent months, the Treasury yield curve has inverted and flatten at the long end. Short term rates have risen sharply due to multiple rate hikes implemented by the FRB. The shape of the curve indicates rates will begin to decline within a year and flatten around the 7-year mark. The short term increase in rates positively affected the Company's balance sheet position should respond positively in a rising interest rate environment and when the rate curves are steepening which should result in a positive impact to net interest income, net interest spread, and net interest margin initially. In the last quarter and as expected in the near term, the net interest margin. A declining interest rate or flattening yield curve environmentmargin is expected to havecompress as deposit pricing "catches up" and investable funds migrate among depository and non-depository categories. Management expects this to persist for a negative impact onquarter or two after the Company's yields andFederal Reserve stops increasing rates after which time net interest margin. Additional risk factors include, but are not limited to: ongoing pricing pressures in bothmargin is expected to stabilize and then increase as loans continue to reprice into the loan and deposit portfolios, the ability to increase the Company's core deposits, decrease its loan-to-deposit ratio, and decrease its reliance on FHLBB advances. Net interest income may also be negatively affected by changes in the amount of accretion on acquired loans and leases, deposits and borrowed funds, which are included in interest income and interest expense, respectively.higher rate environment.

Average Balances, Net Interest Income, Interest-Rate Spread and Net Interest Margin
The following table sets forth information about the Company's average balances, interest income and interest rates earned on average interest-earning assets, interest expense and interest rates paid on average interest-bearing liabilities, interest-rate spread and net interest margin for the three and nine months ended September 30, 2017March 31, 2023 and September 30, 2016.March 31, 2022. Average balances are derived from daily average balances and yields include fees, costs and purchase-accounting-related premiums and discounts which are considered adjustments to coupon yields in accordance with GAAP. Certain amounts previously reported have been reclassified to conform to the current presentation.
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Three Months EndedThree Months Ended
September 30, 2017 September 30, 2016March 31, 2023March 31, 2022
Average
Balance
 Interest (1) 
Average
Yield/
Cost
 
Average
Balance
 Interest (1) 
Average
Yield/
Cost
Average
Balance
Interest (1)Average
Yield/
Cost
Average
Balance
Interest (1)Average
Yield/
Cost
(Dollars in Thousands)(Dollars in Thousands)
Assets:           Assets:
Interest-earning assets:           Interest-earning assets:
Debt securities$642,018
 $3,264
 2.03% $604,394
 $2,910
 1.93%Debt securities$1,029,068 $7,974 3.10 %$720,263 $2,996 1.66 %
Marketable and restricted equity securities66,212
 789
 4.76% 66,981
 836
 4.99%Marketable and restricted equity securities76,911 1,255 6.53 %27,909 328 4.70 %
Short-term investments52,674
 180
 1.36% 36,273
 47
 0.51%Short-term investments147,654 1,495 4.05 %192,475 66 0.14 %
Total investments760,904
 4,233
 2.23% 707,648
 3,793
 2.14%Total investments1,253,633 10,724 3.42 %940,647 3,390 1.44 %
Commercial real estate loans (2)
2,974,185
 31,299
 4.12% 2,872,733
 29,470
 4.10%
Commercial real estate loans (2)
5,579,977 67,667 4.85 %4,152,414 36,027 3.47 %
Commercial loans (2)
760,115
 7,959
 4.10% 717,265
 7,130
 3.90%
Commercial loans (2)
892,522 14,017 6.28 %755,809 7,998 4.23 %
Equipment financing (2)
846,027
 13,983
 6.61% 759,622
 12,189
 6.42%
Equipment financing (2)
1,226,717 21,213 6.92 %1,105,194 18,012 6.52 %
Residential mortgage loans (2)
649,831
 6,043
 3.72% 620,741
 5,513
 3.55%
Residential mortgage loans (2)
1,032,025 11,073 4.29 %804,939 6,992 3.47 %
Other consumer loans (2)
369,925
 4,015
 4.30% 356,516
 3,810
 4.24%
Other consumer loans (2)
420,047 7,997 7.71 %366,534 2,750 3.04 %
Total loans and leases5,600,083
 63,299
 4.52% 5,326,877
 58,112
 4.36%Total loans and leases9,151,288 121,967 5.33 %7,184,890 71,779 4.00 %
Total interest-earning assets6,360,987
 67,532
 4.25% 6,034,525
 61,905
 4.10%Total interest-earning assets10,404,921 132,691 5.10 %8,125,537 75,169 3.70 %
Allowance for loan and lease losses(65,140)     (58,032)    Allowance for loan and lease losses(114,421)(98,960)
Non-interest-earning assets385,195
     383,604
    Non-interest-earning assets840,587 504,466 
Total assets$6,681,042
     $6,360,097
    Total assets$11,131,087 $8,531,043 
Liabilities and Stockholders' Equity:           Liabilities and Stockholders' Equity:
Interest-bearing liabilities:           Interest-bearing liabilities:
Interest-bearing deposits:           Interest-bearing deposits:
NOW accounts$321,731
 55
 0.07% $295,762
 52
 0.07%NOW accounts$810,333 901 0.45 %$589,891 103 0.07 %
Savings accounts605,303
 306
 0.20% 566,192
 318
 0.22%Savings accounts1,160,003 2,514 0.88 %933,173 198 0.09 %
Money market accounts1,765,610
 2,267
 0.51% 1,678,937
 1,905
 0.45%Money market accounts2,366,235 12,140 2.08 %2,416,577 1,570 0.26 %
Certificate of deposit1,139,699
 3,356
 1.17% 1,112,831
 2,837
 1.01%
Certificate of deposit accountsCertificate of deposit accounts1,346,761 7,456 2.25 %1,091,729 1,848 0.69 %
Brokered deposit accountsBrokered deposit accounts534,527 6,357 4.82 %132,751 52 0.16 %
Total interest-bearing deposits (3)
3,832,343
 5,984
 0.62% 3,653,722
 5,112
 0.56%
Total interest-bearing deposits (3)
6,217,859 29,368 1.92 %5,164,121 3,771 0.30 %
Advances from the FHLBB913,206
 3,028
 1.30% 921,396
 2,778
 1.18%
Advances from the FHLBAdvances from the FHLB1,264,523 14,531 4.60 %103,878 187 0.72 %
Subordinated debentures and notes83,204
 1,274
 6.13% 83,036
 1,259
 6.07%Subordinated debentures and notes84,062 1,354 6.44 %83,915 1,244 5.93 %
Other borrowed funds41,368
 47
 0.45% 46,417
 32
 0.27%Other borrowed funds158,499 1,249 3.20 %130,080 61 0.19 %
Total borrowed funds1,037,778
 4,349
 1.64% 1,050,849
 4,069
 1.52%Total borrowed funds1,507,084 17,134 4.55 %317,873 1,492 1.88 %
Total interest-bearing liabilities4,870,121
 10,333
 0.84% 4,704,571
 9,181
 0.78%Total interest-bearing liabilities7,724,943 46,502 2.44 %5,481,994 5,263 0.39 %
Non-interest-bearing liabilities:           Non-interest-bearing liabilities:      
Non-interest-bearing demand checking accounts (3)
918,054
  
  
 863,854
  
  
Non-interest-bearing demand checking accounts (3)
1,930,162   1,880,039   
Other non-interest-bearing liabilities80,616
  
  
 90,025
  
  
Other non-interest-bearing liabilities316,347   171,717   
Total liabilities5,868,791
  
  
 5,658,450
  
  
Total liabilities9,971,452   7,533,750   
Brookline Bancorp, Inc. stockholders' equity804,666
  
  
 695,205
  
  
Noncontrolling interest in subsidiary7,585
  
  
 6,442
  
  
Total stockholders' equity Total stockholders' equity1,159,635   997,293   
Total liabilities and stockholders' equity$6,681,042
  
  
 $6,360,097
  
  
Total liabilities and stockholders' equity$11,131,087   $8,531,043   
Net interest income (tax-equivalent basis) / Interest-rate spread (4)
 
 57,199
 3.41%  
 52,724
 3.32%
Net interest income (tax-equivalent basis) / Interest-rate spread (4)
 86,189 2.66 % 69,906 3.31 %
Less adjustment of tax-exempt income 
 356
  
  
 374
  
Less adjustment of tax-exempt income 140   58  
Net interest income 
 $56,843
  
  
 $52,350
  
Net interest income $86,049   $69,848  
Net interest margin (5)
 
  
 3.57%  
  
 3.48%
Net interest margin (5)
  3.36 %  3.49 %

(1) Tax-exempt income on debt securities, equity securities and industrial revenue bonds are included in commercial real estate loans on a tax-equivalent basis.
(2) Loans on nonaccrual status are included in the average balances.
(3) Including non-interest-bearing checking accounts, the average interest rate on total deposits was 0.50%1.46% and 0.45%0.22% in the three months ended September 30, 2017March 31, 2023 and September 30, 2016,March 31, 2022, respectively.
(4) Interest-rate spread represents the difference between the yield on interest-earning assets and the cost of interest-bearing liabilities.
(5) Net interest margin represents net interest income (tax equivalent basis) divided by average interest-earning assets.

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 Nine Months Ended
 September 30, 2017 September 30, 2016
 
Average
Balance
 Interest (1) 
Average
Yield/
Cost
 
Average
Balance
 Interest (1) 
Average
Yield/
Cost
 (Dollars in Thousands)
Assets:           
Interest-earning assets:           
Investments :           
Debt securities$631,549
 $9,641
 2.04% $604,603
 $9,078
 2.00%
Marketable and restricted equity securities68,104
 2,306
 4.52% 66,764
 2,247
 4.49%
Short-term investments42,922
 342
 1.06% 46,198
 149
 0.43%
Total investments742,575
 12,289
 2.21% 717,565
 11,474
 2.13%
Loans and leases:           
Commercial real estate loans (2)
2,949,313
 91,134
 4.07% 2,785,472
 85,014
 4.07%
Commercial loans (2)
730,453
 22,737
 4.11% 692,634
 20,430
 3.88%
Equipment financing (2)
826,494
 40,907
 6.60% 738,990
 35,690
 6.44%
Residential mortgage loans (2)
641,443
 17,511
 3.64% 624,102
 16,705
 3.57%
Other consumer loans (2)
364,407
 11,187
 4.10% 350,070
 10,389
 3.95%
Total loans and leases5,512,110
 183,476
 4.44% 5,191,268
 168,228
 4.32%
Total interest-earning assets6,254,685
 195,765
 4.17% 5,908,833
 179,702
 4.05%
Allowance for loan and lease losses(62,142)     (57,982)    
Non-interest-earning assets374,558
     379,761
    
Total assets$6,567,101
     $6,230,612
    
Liabilities and Stockholders' Equity:           
Interest-bearing liabilities:           
Interest-bearing deposits:           
NOW accounts$319,633
 164
 0.07% $289,908
 156
 0.07%
Savings accounts603,814
 916
 0.20% 561,798
 998
 0.24%
Money market accounts1,759,449
 6,407
 0.49% 1,654,700
 5,547
 0.45%
Certificate of deposit1,088,011
 9,120
 1.12% 1,107,600
 8,174
 0.99%
Total interest-bearing deposits (3)
3,770,907
 16,607
 0.59% 3,614,006
 14,875
 0.55%
Advances from the FHLBB913,137
 8,640
 1.25% 888,406
 8,125
 1.20%
Subordinated debentures and notes83,165
 3,805
 6.10% 82,996
 3,773
 6.06%
Other borrowed funds49,752
 137
 0.37% 42,463
 82
 0.26%
Total borrowed funds1,046,054
 12,582
 1.59% 1,013,865
 11,980
 1.55%
Total interest-bearing liabilities4,816,961
 29,189
 0.81% 4,627,871
 26,855
 0.78%
Non-interest-bearing liabilities:           
Non-interest-bearing deposits:           
Non-interest-bearing demand checking accounts (3)
905,684
  
  
 829,659
  
  
Other non-interest-bearing liabilities76,735
  
  
 80,774
  
  
Total liabilities5,799,380
  
  
 5,538,304
  
  
Brookline Bancorp, Inc. stockholders' equity760,447
  
  
 686,134
  
  
Noncontrolling interest in subsidiary7,274
  
  
 6,174
  
  
Total liabilities and stockholders' equity$6,567,101
  
  
 $6,230,612
  
  
Net interest income (tax-equivalent basis) / Interest-rate spread (4)
 
 166,576
 3.36%  
 152,847
 3.27%
Less adjustment of tax-exempt income 
 1,052
  
  
 1,037
  
Net interest income 
 $165,524
  
  
 $151,810
  
Net interest margin (5)
 
  
 3.56%  
  
 3.46%

(1) Tax-exempt income on debt securities, equity securities and industrial revenue bonds are included in commercial real estate loans on a tax-equivalent basis.
(2) Loans on nonaccrual status are included in the average balances.
(3) Including non-interest-bearing checking accounts, the average interest rate on total deposits was 0.47% and 0.45% in the nine months ended September 30, 2017 and September 30, 2016, respectively.
(4) Interest-rate spread represents the difference between the yield on interest-earning assets and the cost of interest-bearing liabilities.
(5) Net interest margin represents net interest income (tax equivalent basis) divided by average interest-earning assets.

Rate/Volume Analysis
The following table presents, on a tax-equivalent basis, the extent to which changes in interest rates and changes in volume of interest-earning assets and interest-bearing liabilities have affected the Company's interest income and interest expense during the periods indicated. Information is provided in each category with respect to: (i) changes attributable to

changes in volume (changes in volume multiplied by prior rate), (ii) changes attributable to changes in rate (changes in rate multiplied by prior volume), and (iii) the net change. The changes attributable to the combined impact of volume and rate have been allocated proportionately to the changes due to volume and the changes due to rate.
Three Months Ended March 31, 2023 as Compared to the Three Months Ended March 31, 2022
Increase
(Decrease) Due To
VolumeRateNet Change
(In Thousands)
Interest and dividend income:
Investments:
Debt securities$1,647 $3,331 $4,978 
Marketable and restricted equity securities759 168 927 
Short-term investments(19)1,448 1,429 
Total investments2,387 4,947 7,334 
Loans and leases:
Commercial real estate loans14,670 16,970 31,640 
Commercial loans and leases1,636 4,383 6,019 
Equipment financing2,055 1,146 3,201 
Residential mortgage loans2,221 1,860 4,081 
Other consumer loans455 4,792 5,247 
Total loans21,037 29,151 50,188 
Total change in interest and dividend income23,424 34,098 57,522 
Interest expense:
Deposits:
NOW accounts51 747 798 
Savings accounts62 2,254 2,316 
Money market accounts(33)10,603 10,570 
Certificate of deposit accounts525 5,083 5,608 
Brokered deposit accounts594 5,711 6,305 
Total deposits1,199 24,398 25,597 
Borrowed funds:
Advances from the FHLB9,677 4,667 14,344 
Subordinated debentures and notes108 110 
Other borrowed funds16 1,172 1,188 
Total borrowed funds9,695 5,947 15,642 
Total change in interest expense10,894 30,345 41,239 
Change in tax-exempt income82 — 82 
Change in net interest income$12,448 $3,753 $16,201 

71
 Three Months Ended September 30, 2017 as Compared to the Three Months Ended September 30, 2016 Nine Months Ended September 30, 2017 as Compared to the Nine Months Ended September 30, 2016
 
Increase
(Decrease) Due To
   
Increase
(Decrease) Due To
  
 Volume Rate Net Change Volume Rate Net Change
 (In Thousands)
Interest and dividend income:           
Investments:           
Debt securities$193
 $161
 $354
 $389
 $174
 $563
Marketable and restricted equity securities(9) (38) (47) 44
 15
 59
Short-term investments28
 105
 133
 (11) 204
 193
Total investments212
 228
 440
 422
 393
 815
Loans and leases:           
Commercial real estate loans1,607
 222
 1,829
 6,120
 
 6,120
Commercial loans and leases446
 383
 829
 1,106
 1,201
 2,307
Equipment financing1,424
 370
 1,794
 4,312
 905
 5,217
Residential mortgage loans262
 268
 530
 473
 333
 806
Other consumer loans149
 56
 205
 414
 384
 798
Total loans3,888
 1,299
 5,187
 12,425
 2,823
 15,248
Total change in interest and dividend income4,100
 1,527
 5,627
 12,847
 3,216
 16,063
Interest expense:           
Deposits:           
NOW accounts3
 
 3
 8
 
 8
Savings accounts19
 (31) (12) 79
 (161) (82)
Money market accounts101
 261
 362
 358
 502
 860
Certificate of deposit69
 450
 519
 (143) 1,089
 946
Total deposits192
 680
 872
 302
 1,430
 1,732
Borrowed funds:           
Advances from the FHLBB(25) 275
 250
 206
 309
 515
Subordinated debentures and notes3
 12
 15
 8
 24
 32
Other borrowed funds(4) 19
 15
 16
 39
 55
Total borrowed funds(26) 306
 280
 230
 372
 602
Total change in interest expense166
 986
 1,152
 532
 1,802
 2,334
Change in tax-exempt income(18) 
 (18) 15
 
 15
Change in net interest income$3,952
 $541
 $4,493
 $12,300
 $1,414
 $13,714

Table of Contents


Interest Income


Loans and Leases
Three Months Ended September 30, 
Dollar
Change
 
Percent
Change
 Nine Months Ended September 30, 
Dollar
Change
 
Percent
Change
Three Months Ended March 31,Dollar
Change
Percent
Change
2017
2016 2017 2016 20232022
(Dollars in Thousands)(Dollars in Thousands)
Interest income—loans and leases:               Interest income—loans and leases:
Commercial real estate loans$31,298
 $29,470
 $1,828
 6.2% $91,133
 $85,014
 $6,119
 7.2%Commercial real estate loans$67,667 $36,027 $31,640 87.8 %
Commercial loans7,714
 6,876
 838
 12.2% 22,011
 19,676
 2,335
 11.9%Commercial loans13,981 7,940 6,041 76.1 %
Equipment financing13,983
 12,188
 1,795
 14.7% 40,907
 35,690
 5,217
 14.6%Equipment financing21,213 18,012 3,201 17.8 %
Residential mortgage loans6,043
 5,514
 529
 9.6% 17,511
 16,705
 806
 4.8%Residential mortgage loans11,073 6,992 4,081 58.4 %
Other consumer loans4,016
 3,810
 206
 5.4% 11,188
 10,389
 799
 7.7%Other consumer loans7,997 2,750 5,247 190.8 %
Total interest income—loans and leases$63,054
 $57,858
 $5,196
 9.0% $182,750
 $167,474
 $15,276
 9.1%Total interest income—loans and leases$121,931 $71,721 $50,210 70.0 %
Interest incomeTotal interest from loans and leases was $63.1$121.9 million for the three months ended September 30, 2017,March 31, 2023, and represented a yield on total loans of 4.52%5.33%. This compares to $57.9$71.7 million of interest on loans and a yield of 4.36%4.00% for September 30, 2016.the three months ended March 31, 2022. The $5.2$50.2 million increase in interest income from loans and leases was attributable to an increase of $3.9 million due to an increase in origination volume and an increase of $1.3 million due to the changes in interest rates.
Accretion on acquired loans and leases of $0.2 million contributed 1 basis point to the Company's net interest margin for the three months ended September 30, 2017, compared to $0.9 million and 6 basis points for the three months ended September 30, 2016.
Interest income from loans and leases was $182.8 million for the nine months ended September 30, 2017, resulting in a yield on total loans of 4.44%. This compares to $167.5 million of interest on loans and a yield of 4.32% for the nine months ended September 30, 2016. The year over year increase of $15.2 million in interest income from loans and leases wasprimarily due to an increase of $12.4$29.2 million duein changes to increase in origination volumeinterest rates, and an increase of $21.0 million in origination volume; of $2.8which $15.3 million due to changes in interest rates.was driven by the acquisition of PCSB.
Accretion on acquired loans and leases of $0.6 million contributed 1 basis point to net interest margin for the nine months ended September 30, 2017, compared to $1.3 million and 3 basis point for the nine months ended September 30, 2016. 

Investments
Investments
Three Months Ended September 30, 
Dollar
Change
 
Percent
Change
 Nine Months Ended September 30, 
Dollar
Change
 
Percent
Change
Three Months Ended March 31,Dollar
Change
Percent
Change
2017 2016 2017 2016 20232022
(Dollars in Thousands)(Dollars in Thousands)
Interest income—investments:               Interest income—investments:
Debt securities$3,154
 $2,822
 $332
 11.8 % $9,310
 $8,829
 $481
 5.4%Debt securities$7,870 $2,996 $4,874 162.7 %
Marketable and restricted equity securities788
 804
 (16) -2.0 % 2,311
 2,213
 98
 4.4%Marketable and restricted equity securities1,255 328 927 282.6 %
Short-term investments180
 47
 133
 283.0 % 342
 149
 193
 129.5%Short-term investments1,495 66 1,429 2,165.2 %
Total interest income—investments$4,122
 $3,673
 $449
 12.2 % $11,963
 $11,191
 $772
 6.9%Total interest income—investments$10,620 $3,390 $7,230 213.3 %
Total investmentinterest income from investments was $4.1$10.6 million for the three months ended September 30, 2017March 31, 2023, compared to $3.7$3.4 million for the three months ended September 30, 2016. As of September 30, 2017March 31, 2022. For the three months ended March 31, 2023 and 2016,2022, the yield on total investments was 2.2%3.4% and 2.1%,1.4%. respectively. The year over yearyear-over-year increase in interest income on investments of $0.4$7.2 million, or 12.2%213.3%, was primarily driven by a $228.0 thousand$2.4 million increase due to ratesvolume and a $212.0 thousand$4.9 million increase due to volume.rates.
Total investment income was $12.0 million for the nine months ended September 30, 2017 compared to $11.2 million for the nine months ended September 30, 2016. As
72

Table of September 30, 2017 and 2016, the yield on total investments was 2.2% andContents

2.1%, respectively. The year over year increase in interest income on investments of $0.8 million, or 6.9%, was driven by a $393.0 thousand increase due to rates and a $422.0 thousand increase due to volume.

Interest Expense—Deposits and Borrowed Funds
Three Months Ended September 30, 
Dollar
Change
 
Percent
Change
 Nine Months Ended September 30, Dollar PercentThree Months Ended March 31,Dollar
Change
Percent
Change
2017 2016 2017 2016 Change Change20232022
(Dollars in Thousands)(Dollars in Thousands)
Interest expense:               Interest expense:
Deposits:               Deposits:
NOW accounts$55
 $52
 $3
 5.8 % $164
 $156
 $8
 5.1 %NOW accounts$901 $103 $798 774.8 %
Savings accounts306
 318
 (12) -3.8 % 916
 998
 (82) -8.2 %Savings accounts2,514 198 2,316 1,169.7 %
Money market accounts2,267
 1,905
 362
 19.0 % 6,407
 5,547
 860
 15.5 %Money market accounts12,140 1,570 10,570 673.2 %
Certificates of deposit3,356
 2,837
 519
 18.3 % 9,120
 8,174
 946
 11.6 %
Certificate of deposit accountsCertificate of deposit accounts7,456 1,848 5,608 303.5 %
Brokered deposit accountsBrokered deposit accounts6,357 52 6,305 12,125.0 %
Total interest expense - deposits5,984
 5,112
 872
 17.1 % 16,607
 14,875
 1,732
 11.6 %Total interest expense - deposits29,368 3,771 25,597 678.8 %
Borrowed funds:               Borrowed funds:
Advances from the FHLBB3,028
 2,778
 250
 9.0 % 8,640
 8,125
 515
 6.3 %
Advances from the FHLBAdvances from the FHLB14,531 187 14,344 7,670.6 %
Subordinated debentures and notes1,274
 1,259
 15
 1.2 % 3,805
 3,773
 32
 0.8 %Subordinated debentures and notes1,354 1,244 110 8.8 %
Other borrowed funds47
 32
 15
 46.9 % 137
 82
 55
 67.1 %Other borrowed funds1,249 61 1,188 1,947.5 %
Total interest expense - borrowed funds4,349
 4,069
 280
 6.9 % 12,582
 11,980
 602
 5.0 %Total interest expense - borrowed funds17,134 1,492 15,642 1,048.4 %
Total interest expense$10,333
 $9,181
 $1,152
 12.5 % $29,189
 $26,855
 $2,334
 8.7 %Total interest expense$46,502 $5,263 $41,239 783.6 %
Deposits
For the three months ended September 30, 2017,March 31, 2023, interest expense on deposits increased $0.9$25.6 million, or 17.1%, as compared to the same period in 2016. Interest2022. The increase in interest expense increased $0.7on deposits was driven by an increase of $24.4 million due to an increase inhigher interest rates and $0.2an increase of $1.2 million due toprimarily driven by the growth in deposits. There was no purchasevolume of average brokered deposit and certificate of deposit balances. Purchase accounting accretionamortization on acquired deposits for the three months ended September 30, 2017, compared to $24.0March 31, 2023 was $324 thousand forand one basis point. For the same period in 2022, the Company did not record any purchase accounting amortization.
Borrowed Funds
For the three months ended September 30, 2016. Purchase accounting accretion did not impact the Company's net interest margin for the three months ended September 30, 2017 and 2016.
Interest expense on deposits increased $1.7 million, or 11.6%, to $16.6 million for the nine months ended September 30, 2017 from $14.9 million for the nine months ended September 30, 2016. The increase in interest expense on deposits was due to a $1.4 million increase due to rates offered and a $0.3 million increase due to volume. There was no accretion on acquired deposits for the nine months ended September 30, 2017 compared to $73.0 thousand for the nine months ended September 30, 2016. Accretion did not have an impact on the Company's net interest margin for the nine months ended September 30, 2017 and 2016.
Borrowed Funds
During the three months ended September 30, 2017,March 31, 2023, interest paid on borrowed funds increased $0.3$15.6 million or 6.9% year over year, primarily driven by an increase in FHLBB borrowings.year-over-year. The cost of borrowed funds increased to 1.64%4.55% for the three months ended September 30, 2017March 31, 2023 from 1.52%1.88% for the three months ended September 30, 2016.March 31, 2022. The increase in interest expense was driven by an increase of $306.0 thousand$9.7 million due to volume and an increase of $5.9 million due to borrowing rates and a decrease of $26.0 thousand due to volume.rates. For the three months ended September 30, 2017, there was noMarch 31, 2023, the purchase accounting accretionamortization on acquired borrowed funds was $130 thousand and one basis point compared to $0.6 million$12 thousand and fourno basis points for the three months ended September 30, 2016.March 31, 2022.



73
Interest expense on borrowed funds increased by $0.6 million, or 5.0%, to $12.6 million for the nine months ended September 30, 2017 from $12.0 million for the nine months ended September 30, 2016. The cost

Table of borrowed funds increased to 1.59% for the nine months ended September 30, 2017 from 1.55% for the nine months ended September 30, 2016. The increase in interest expense was due to a $372.0 thousand increase due to higher borrowing rates and a $230.0 thousand increase due to higher volume. Accretion on acquired borrowed funds of $1.0 million improved the Company’s net interest margin by two basis points for the nine months ended September 30, 2017. This compared to $1.9 million and four basis points for the nine months ended September 30, 2016.Contents
Provision for Credit Losses
The provisions for credit losses are set forth below:
Three Months Ended March 31,Dollar
Change
Percent
Change
20232022
(Dollars in Thousands)
Provision (credit) for loan and lease losses:
Commercial real estate$14,532 $(151)$14,683 (9,723.8)%
Commercial6,614 (1,604)8,218 (512.3)%
Consumer1,688 81 1,607 1,984.0 %
Total provision (credit) for loan and
 lease losses
22,834 (1,674)24,508 (1,464.0)%
Provision (credit) for loan and lease losses on PCD loans:
Commercial real estate1,685 — 1,685 N/A
Commercial469 — 469 N/A
Consumer190 — 190 N/A
Total provision (credit) for loan and lease losses on PCD loans2,344 — 2,344 N/A
Unfunded credit commitments2,510 1,510 1,000 66.2 %
Investment securities available-for-sale198 — 198 N/A
Total provision (credit) for credit losses$27,886 $(164)$28,050 (17,103.7)%
 Three Months Ended September 30, Dollar Percent Nine Months Ended September 30, Dollar Percent
 2017
2016 Change Change 2017 2016 Change Change
 (Dollars in Thousands)
Provision for loan and lease losses:               
Commercial real estate$979
 $(1,755) $2,734
 155.8 % $1,041
 $(561) $1,602
 285.6 %
Commercial1,832
 3,923
 (2,091) -53.3 % 15,636
 7,201
 8,435
 117.1 %
Consumer35
 (14) 49
 350.0 % 421
 451
 (30) -6.7 %
Total provision for loan and lease losses2,846
 2,154
 692
 32.1 % 17,098
 7,091
 10,007
 141.1 %
Unfunded credit commitments65
 61
 4
 6.6 % 88
 47
 41
 87.2 %
Total provision for credit losses$2,911
 $2,215
 $696
 31.4 % $17,186
 $7,138
 $10,048
 140.8 %


For the three months ended September 30, 2017,March 31, 2023, the Allowance for Credit Losses ("ACL") increased $25.7 million resulting in a provision for credit losses increased $0.7 million, or 31.4%, to $2.9 million from $2.2 millionof $25.5 million. The increase in the ACL for the three months ended September 30, 2016. TheMarch 31, 2023 is attributable to an increase in the provision for credit losses for the three months ended September 30, 2017 was primarily driven by charge-offs on several taxi medallion loans during the quarter,specific reserves as well as changes in loss factors of the commercial real estate portfolio during the third quarter of 2017.

For the nine months ended September 30, 2017, the provision for credit losses increased $10.0 million, or 140.8%, to $17.2 million from $7.1 million for the nine months ended September 30, 2016. The increase in the provision for credit losses for the nine months ended September 30, 2017 was primarily driven by the continued loan growth in the commercial real estate and equipment financing portfolios and increases in specific reserves for taxi medallion loans.low level of net charge-offs, partially offset by portfolio growth.

See management’s discussion of “Financial Condition — Allowance for Loan and Lease Losses” and Note 5, “Allowance for Loan and Lease Losses,” to the unaudited consolidated financial statements for a description of how management determined the allowance for loan and lease losses for each portfolio and class of loans.

Non-Interest Income
The following table sets forth the components of non-interest income:
Three Months Ended September 30, 
Dollar
Change
 
Percent
Change
 Nine Months Ended September 30, 
Dollar
Change
 
Percent
Change
Three Months Ended March 31,Dollar
Change
Percent
Change
2017
2016 2017 2016 20232022
(Dollars in Thousands)(Dollars in Thousands)
Deposit fees$2,547
 $2,289
 $258
 11.3 % $7,508
 $6,650
 $858
 12.9 %Deposit fees$2,657 $2,500 $157 6.3 %
Loan fees282
 330
 (48) -14.5 % 772
 977
 (205) -21.0 %Loan fees391 747 (356)(47.7)%
Loan level derivative income, net844
 858
 (14) -1.6 % 1,432
 3,697
 (2,265) -61.3 %Loan level derivative income, net2,373 686 1,687 245.9 %
Gain on sales of investment securities, net
 
 

 % 11,393
 
 11,393
 100.0 %
Gain (loss) on investment securities, netGain (loss) on investment securities, net1,701 — 1,701 N/A
Gain on sales of loans and leases held-for-sale1,049
 588
 461
 78.4 % 1,709
 1,986
 (277) -13.9 %Gain on sales of loans and leases held-for-sale1,638 344 1,294 376.2 %
Other1,251
 1,264
 (13) -1.0 % 3,544
 3,893
 (349) -9.0 %Other4,177 1,252 2,925 233.6 %
Total non-interest income$5,973
 $5,329
 $644
 12.1 % $26,358
 $17,203
 $9,155
 53.2 %Total non-interest income$12,937 $5,529 $7,408 134.0 %
For the three months ended September 30, 2017,March 31, 2023, non-interest income increased $0.6$7.4 million, or 12.1%134.0%, to $6.0$12.9 million as compared to $5.5 million for the same period of 2022. The increase was primarily driven by increases of $2.9 million in 2016. This increase is primarily due to a $0.3other income, $1.7 million increase in deposit feesgain (loss) on investment securities, net, $1.7 million in loan level derivative income, net, and a $0.5$1.3 million increase in gain on sales of loans and leases held-for-sale.
For the nine months ended September 30, 2017, non-interest income increased $9.2 million, or 53.2%, to $26.4 million as compared to the same period of 2016. This increase is primarily due to a $0.9 million increase in deposit fees, offset by a $2.3 million decrease in loanLoan level derivative income and a $11.4 million increase in gain on sales of investment securities.
Deposit fees increased $0.3$1.7 million, or 11.3%245.9%, to $2.5$2.4 million for the three months ended September 30, 2017March 31, 2023 from $2.3$0.7 million for the same period in 2022, primarily driven by higher volume in loan level derivative transactions completed for the three months ended March 31, 2023.
74

Table of 2016 and increased $0.9 million, or 12.9%, to $7.5Contents
Gain (loss) on investment securities was $1.7 million for the ninethree months ended September 30, 2017 from $6.7 millionMarch 31, 2023. The Company did not have any gain (loss) on investment securities for the same period in 2022. The increase was primarily driven by gain on sale of 2016. This increase is primarily due to growth in deposits.PCSB investments.
Gain on sales of loans and leases held-for-sale increased $0.5$1.3 million, or 78.4%376.2%, to $1.0$1.6 million for the three months ended September 30, 2017March 31, 2023 from $0.6$0.3 million for the same period of 2016. This increase isin 2022, primarily driven by thehigher gain recorded on the sale of loans.to participants.
Loan level derivativeOther income decreased $2.3increased $2.9 million, or 61.3%233.6%, to $1.4$4.2 million for the ninethree months ended September 30, 2017March 31, 2023 from $3.7$1.3 million for the same period of 2016, primarily driven by fewer loan level derivative transactions completed for the nine months ended September 30, 2017.
No gain on sales of investment securities were recorded for the three months ended September 30, 2017 and 2016 and increased to $11.4 million, or 100.0%, for the nine months ended September 30, 2017 from zero for the same period of 2016,in 2022, primarily driven by the gainmark to market on investment securities in the first quarter 2017.interest rate swaps on participated loans and bank owned life insurance income, partially offset by lower 1031 exchange income and advisory fees-investment income.
Non-Interest Expense
The following table sets forth the components of non-interest expense:

Three Months Ended September 30, 
Dollar
Change
 
Percent
Change
 Nine Months Ended September 30, 
Dollar
Change
 
Percent
Change
Three Months Ended March 31,Dollar
Change
Percent
Change
2017 2016 2017 2016 20232022
(Dollars in Thousands)(Dollars in Thousands)
Compensation and employee benefits$21,067
 $20,369
 $698
 3.4 % $61,761
 $58,179
 $3,582
 6.2 %Compensation and employee benefits$36,565 $26,884 $9,681 36.0 %
Occupancy3,650
 3,411
 239
 7.0 % 10,952
 10,328
 624
 6.0 %Occupancy5,223 4,284 939 21.9 %
Equipment and data processing4,210
 3,826
 384
 10.0 % 12,437
 11,468
 969
 8.4 %Equipment and data processing6,462 5,078 1,384 27.3 %
Professional services973
 997
 (24) -2.4 % 3,115
 2,925
 190
 6.5 %Professional services1,430 1,226 204 16.6 %
FDIC insurance842
 956
 (114) -11.9 % 2,648
 2,677
 (29) -1.1 %FDIC insurance1,244 728 516 70.9 %
Advertising and marketing839
 844
 (5) -0.6 % 2,513
 2,558
 (45) -1.8 %Advertising and marketing1,410 1,272 138 10.8 %
Amortization of identified intangible assets519
 623
 (104) -16.7 % 1,570
 1,879
 (309) -16.4 %Amortization of identified intangible assets1,966 134 1,832 1,367.2 %
Merger and acquisition expense205
 
 205
 100.0 % 205
 
 205
 100.0 %Merger and acquisition expense6,409 — 6,409 N/A
Other3,103
 2,362
 741
 31.4 % 8,758
 7,707
 1,051
 13.6 %Other4,067 2,881 1,186 41.2 %
Total non-interest expense$35,408
 $33,388
 $2,020
 6.1 % $103,959
 $97,721
 $6,238
 6.4 %Total non-interest expense$64,776 $42,487 $22,289 52.5 %
For the three months ended September 30, 2017,March 31, 2023, non-interest expense increased $2.0$22.3 million, or 6.1%52.5%, to $35.4 million as compared to the same period in 2016. This2022. The increase iswas primarily due to a $0.7driven by increases of $9.7 million increase in compensation and employee benefits expense, a $0.4$6.4 million increasein merger and acquisition expense, $1.8 million in amortization of identified intangible assets, and $1.4 million in equipment and data processing expense, and a $0.7 million increase in other expense.
For the nine months ended September 30, 2017, non-interest expense increased $6.2 million, or 6.4%, to $104.0 million as compared to the same period in 2016. This increase is primarily due to a $3.6 million increase in compensation and employee benefits expense, a $1.0 million increase in equipment and data processing expense, and a $1.1 million increase in other expense.
The efficiency ratio decreased to 56.37% for the three months ended September 30, 2017 from 57.89% for the same period in 2016 and decreased to 54.18% for the nine months ended September 30, 2017 from 57.82% for the same period in 2016. Efforts to drive revenue growth contributed to the overall improvement in the efficiency ratio, along with an $11.4 million gain on sales of investment securities in the first quarter of 2017.processing.
Compensation and employee benefits expense increased $0.7$9.7 million, or 3.4%36.0%, to $21.1$36.6 million for the three months ended September 30, 2017,March 31, 2023 from $20.4$26.9 million for the same period in 2016 and increased $3.6 million, or 6.2% to $61.8 million for the nine months ended September 30, 2017 from $58.2 million for the same period in 2016. This increase was2022, primarily driven by an increase inhigher employee headcount, higher salaries, higher incentive bonus, higher employee benefits-retirement plan, and incentive plan expenses.higher payroll benefits-health care.
Equipment and data processing expense increased $0.4$1.4 million, or 10.0%27.3%, to $4.2$6.5 million for the three months ended September 30, 2017March 31, 2023 from $3.8$5.1 million for the same period in 20162022, primarily driven by higher software licenses and subscriptions, core processing, depreciation-purchased software, data communications, and depreciation-other furniture & equipment, partially offset by lower ATM maintenance and loan processing expense.
Merger and acquisition expense increased $1.0$6.4 million or 8.4%, to $12.4$6.4 million, for the ninethree months ended September 30, 2017March 31, 2023. For the same period in 2022, the Company did not incur any merger-related expenses. The increase in 2023 was primarily driven by merger-related expenses for PCSB.
Amortization expense of identified intangible assets increased $1.8 million, or 1,367.2%, to $2.0 million for the three months ended March 31, 2023 from $11.5$0.1 million for the same period in 2016. This increase was2022, primarily driven by higher core deposit intangible expense for PCSB.
75

Table of Contents
Provision for Income Taxes
Three Months Ended March 31,Dollar
Change
Percent
Change
20232022
(Dollars in Thousands)
Income before provision for income taxes$8,668 $33,050 $(24,382)(73.8)%
Provision (benefit) for income taxes1,108 8,345 (7,237)(86.7)%
Net income$7,560 $24,705 $(17,145)(69.4)%
Effective tax rate12.8 %25.2 %N/A(49.2)%
The Company recorded an increase related to core processing, software licenses, and loan processing expense.
Otherincome tax expense increased $0.7 million, or 31.4%, to $3.1of $1.1 million for the three months ended September 30, 2017 from $2.4 million for the same period in 2016 and increased $1.1 million, or 13.6%,March 31, 2023, compared to $8.8 million for the nine months ended September 30, 2017 from $7.7 million for the same period in 2016. This increase was primarily driven by an increase related to loan expenses.


Provision for Income Taxes
 Three Months Ended September 30, 
Dollar
Change
 
Percent
Change
 Nine Months Ended September 30, 
Dollar
Change
 
Percent
Change
 2017
2016   2017 2016  
 (Dollars in Thousands)
Income before provision for income taxes$24,497
 $22,076
 $2,421
 11.0 % $70,737
 $64,154
 $6,583
 10.3 %
Provision for income taxes8,330
 7,804
 526
 6.7 % 24,924
 22,868
 2,056
 9.0 %
Net income, before non-controlling interest in subsidiary$16,167
 $14,272
 $1,895
 13.3 % $45,813
 $41,286
 $4,527
 11.0 %
Effective tax rate34.0% 35.4% N/A
 -4.0 % 35.2% 35.6% N/A
 -1.1 %
The Company recorded income tax expense of $8.3 million for the three months ended September 30, 2017, compared to $7.8 million for the three months ended September 30, 2016,March 31, 2022, representing effective tax rates of 34.0%12.8% and 35.4%25.2%, respectively.
The Company recorded income tax expense of $24.9 million for the nine months ended September 30, 2017, compared to $22.9 million for the nine months ended September 30, 2016, representing effective tax rates of 35.2% and 35.6%, respectively.
The decrease in the effective tax rates for the three and nine months ended September 30, 2017 wasrate is primarily due to the adoption of ASU 2016-09. This ASU requires that the excessfurther participation in energy tax benefit associated with stock compensation transactions be recorded through earnings as a discrete item within the Company's effective tax rate during the period of the transaction. The prior guidance required the recognition of the excess tax benefit through additional paid in capital. The majority of the Company's stock based compensation events occurcredit deals in the third quarter. Refer alsoquarter, offset by merger expenses relating to Note 9, "Stock Based Compensation."the acquisition of PCSB Bank.
During the third quarter of 2017, the Company was notified by the Internal Revenue Service (IRS) of its intent to examine the Company's 2015 consolidated federal income tax return. Management believes that this examination will conclude during the next 12 months.
Liquidity and Capital Resources
Liquidity
Liquidity is defined as the ability to meet current and future financial obligations of a short-term nature. The Company further defines liquidity as the ability to respond to the needs of depositors and borrowers, as well as to earnings enhancement opportunities, in a changing marketplace. Liquidity management is monitored by an Asset/Liability Committee ("ALCO"), consisting of members of management, which is responsible for establishing and monitoring liquidity targets as well as strategies and tactics to meet these targets.
The primary source of funds for the payment of dividends and expenses by the Company is dividends paid to it by the Banks and Brookline Securities Corp. The primary sources of liquidity for the Banks consist of deposit inflows, loan repayments, borrowed funds, and maturing investment securities.
In the first quarter, the Company operated with increased liquidity. In the quarter, the Company shifted its balance sheet asset mix to include additional cash and available for sale securities. Management will continue to monitor the economic markets and evaluate changes to the Company’s liquidity position.
The Company held higher levels of on balance sheet liquidity in the form of cash and available for sale securities in the first quarter. Cash and equivalents at the end of the quarter were $486.3 million, or 4.2% of the balance sheet, compared to $383.0 million, or 4.2% of the balance sheet, as of December 31, 2022. In general, in a normal operating environment, the Company seeks to maintain liquidity levels of cash, cash equivalents and investment securities available-for-sale of between 5% and 15% of total assets. As of March 31, 2023, cash, cash equivalents and investment securities available-for-sale totaled $1.6 billion, or 13.5% of total assets. This compares to $1.0 billion, or 11.3% of total assets, as of December 31, 2022.
Deposits, which are considered the most stable source of liquidity, totaled $4.8$8.5 billion as of September 30, 2017March 31, 2023 and represented 83.0%83.8% of total funding (the sum of total deposits and total borrowings), compared to deposits of $4.6$6.5 billion, or 81.5%82.0% of total funding, as of December 31, 2016.2022. Core deposits, which consist of demand checking, NOW, savings and money market accounts, totaled $3.6$6.1 billion as of September 30, 2017March 31, 2023 and represented 75.7%72.3% of total deposits, compared to core deposits of $3.6$5.3 billion, or 77.4%81.0% of total deposits, as of December 31, 2016.2022. Additionally, the Company had $260.8$982.4 million of brokered deposits as of September 30, 2017,March 31, 2023, which represented 5.4%11.6% of total deposits, compared to $203.4$310.1 million or 4.4%4.8% of total deposits, as of December 31, 2016.2022. The Company offers attractive interest rates based on market conditions to increase deposits balances, while managing cost of funds.
Borrowings are used to diversify the Company's funding mix and to support asset growth. When profitable lending and investment opportunities exist, access to borrowings provides a means to grow the balance sheet. Borrowings totaled $1.0$1.6 billion as of September 30, 2017,March 31, 2023, representing 17.0%16.2% of total funding, compared to $1.0$1.4 billion, or 18.5%18.0% of total funding, as of December 31, 2016.2022. The growth in the balance sheet is driven by the current operating environment, management will continue to monitor economic conditions and make adjustments to the balance sheet mix as appropriate.
As members of the FHLBB,FHLB, the Banks have access to both short- and long-term borrowings. As of September 30, 2017 and DecemberMarch 31, 2016,2023, the Company's total borrowing limit from the FHLBBFHLB for advances and repurchase agreements was $1.5$2.2 billion, compared to $1.7 billion as of December 31, 2022, the increase based on the level of qualifying collateral available for these borrowings.

As of September 30, 2017,March 31, 2023, the Banks also have access to funding through certain uncommitted lines of credit of $204.0$784.0 million.
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The Company had a $12.0$30.0 million committed line of credit for contingent liquidity as of September 30, 2017.March 31, 2023. As of September 30, 2017,March 31, 2023, the Company did not have any outstanding borrowings on this committed line of credit outstanding.line.
The Company has access to the Federal Reserve BankBank's "discount window" to supplement its liquidity. The Company has $86.9had $239.6 million of borrowing capacity at the Federal Reserve Bank as of September 30, 2017.March 31, 2023. As of September 30, 2017,March 31, 2023, the Company did not have any outstanding borrowings with the Federal Reserve Bank outstanding.Bank.
Additionally, the Banks have access to liquidity through repurchase agreements and additional untapped brokered deposits.
In general, the Company seeks to maintain a high degree of liquidity and targets cash, cash equivalents and investment securities available-for-sale balances of between 10% and 30% of total assets. As of September 30, 2017, cash, cash equivalents and investment securities available-for-sale totaled $586.3 million, or 8.8% of total assets. This compares to $591.3 million, or 9.2% of total assets as of December 31, 2016.
While management believes that the Company has adequate liquidity to meet its commitments and to fund the Banks' lending and investment activities, the availabilities of these funding sources are subject to broad economic conditions and could be restricted in the future. Such restrictions would impact the Company's immediate liquidity and/or additional liquidity needs.

Off-Balance-Sheet Financial Instruments


The Company is party to off-balance-sheet financial instruments in the normal course of business to meet the financing needs of its customers and to reduce its own exposure to fluctuations in interest rates. These financial instruments include loan commitments, standby and commercial letters of credit and interest-rate swaps. According to GAAP, these financial instruments are not recorded in the financial statements until they are funded or related fees are incurred or received.
The contract amounts reflect the extent of the involvement the Company has in particular classes of these instruments. Such commitments involve, See Note 12, "Commitments and Contingencies", to varying degrees, elements of credit risk and interest-rate risk in excess of the amount recognized in the consolidated balance sheet. The Company’s exposure to credit loss in the eventfinancial statements for a description of non-performance by the counterparty is represented by the contractual amount of theoff-balance-sheet financial instruments. The Company uses the same policies in making commitments and conditional obligations as it does for on-balance-sheet instruments.

 
Financial instruments with off-balance-sheet risk at the dates indicated follow:
 At March 31, 2023At December 31, 2022
 (In Thousands)
Financial instruments whose contract amounts represent credit risk:  
Commitments to originate loans and leases:  
Commercial real estate$214,390 $414,217 
Commercial242,928 291,188 
Residential mortgage10,788 14,036 
Unadvanced portion of loans and leases1,283,463 1,202,738 
Unused lines of credit:  
Home equity751,717 700,201 
Other consumer105,416 97,313 
Other commercial478 526 
Unused letters of credit:  
Financial standby letters of credit14,611 13,584 
Performance standby letters of credit31,202 31,330 
Commercial and similar letters of credit4,817 2,619 
Interest rate derivatives$225,000 $150,000 
Loan level derivatives:
Receive fixed, pay variable1,773,735 1,489,709 
Pay fixed, receive variable1,773,735 1,489,709 
Risk participation-out agreements511,464 393,624 
Risk participation-in agreements74,757 75,223 
Foreign exchange contracts:
Buys foreign currency, sells U.S. currency2,631 2,383 
Sells foreign currency, buys U.S. currency2,650 2,400 

 At September 30, 2017 At December 31, 2016
 (In Thousands)
Financial instruments whose contract amounts represent credit risk:   
Commitments to originate loans and leases:   
Commercial real estate$95,484
 $27,750
Commercial89,036
 71,716
Residential mortgage19,672
 28,179
Unadvanced portion of loans and leases526,532
 580,416
Unused lines of credit:   
Home equity383,973
 340,682
Other consumer14,119
 13,157
Other commercial306
 208
Unused letters of credit:   
Financial standby letters of credit11,270
 11,720
Performance standby letters of credit668
 516
Commercial and similar letters of credit855
 785
Loan level derivatives:   
Receive fixed, pay variable465,470
 383,780
Pay fixed, receive variable465,470
 383,780
Risk participation-out agreements28,858
 16,961
Risk participation-in agreements3,825
 
Foreign exchange contracts:   
Buys foreign currency, sells U.S. currency1,200
 195
Sells foreign currency, buys U.S. currency1,208
 195
77

As
Table of December 31, 2016, the Company held no risk participation-in agreements.Contents


Capital Resources
As of September 30, 2017,March 31, 2023, the Company and the Banks are each under the primary regulation of, and must comply with, the capital requirements of the FRB. Under these rules, the Company and the Banks are each required to maintain a minimum common equity Tier 1 capital ratio of 4.5%, a minimum Tier 1 capital leverage ratio of 6.0%, a minimum total risk based capital ratio of 8% and a minimum Tier 1 leverage ratio of 4%. Additionally, the Company and the Banks are required to establish a capital conservation buffer of common equity Tier 1 capital in an amount above the minimum risk-based capital requirements for “adequately capitalized” institutions equal to 2.5% of total risk weighted assets, or face restrictions on the ability to pay dividends, pay discretionary bonuses, and to engage in share repurchases. As of September 30, 2017,March 31, 2023, the Company and the Banks exceeded all regulatory capital requirements, and the Banks were each considered “well-capitalized” under prompt corrective action regulations, as amended to reflect the changes under Basel III Capital Rules. regulations.

The following table presents actual and required capital amounts and capital ratios as of September 30, 2017March 31, 2023 for the Company and the Banks under the Basel III Capital Rules based on the phase-in provision of the Basel III Capital Rules and the minimum required capital levels as of January 1, 2019 when the Basel III Capital Rules have been fully phased in.Banks.
The Company's and the Banks' actual and required capital amounts and ratios were as follows:
ActualMinimum Required for Capital Adequacy PurposesMinimum Required for Fully Phased in Capital Adequacy Purposes plus Capital Conservation Buffer
Minimum Required  to be Considered “Well-Capitalized” Under Prompt Corrective Action Provisions
Actual Minimum Required for Capital Adequacy Purposes Minimum Required for Fully Phased in Capital Adequacy Purposes plus Capital Conservation Buffer 
Minimum Required  to be Considered “Well-Capitalized” Under Prompt Corrective Action Provisions
AmountRatioAmountRatioAmountRatioAmountRatio
Amount Ratio Amount Ratio Amount Ratio Amount Ratio(Dollars in Thousands)
(Dollars in Thousands)
At September 30, 2017:               
At March 31, 2023:At March 31, 2023:
Brookline Bancorp, Inc.               Brookline Bancorp, Inc.
Common equity Tier 1 capital ratio (1)
$666,819
 12.07% $248,607
 4.50% $386,722
 7.00% N/A
 N/A
Common equity Tier 1 capital ratio (1)
$953,604 10.66 %$402,553 4.50 %$626,194 7.00 %N/AN/A
Tier 1 leverage capital ratio (2)
683,868
 10.45% 261,768
 4.00% 261,768
 4.00% N/A
 N/A
Tier 1 leverage capital ratio (2)
963,332 8.78 %438,876 4.00 %438,876 4.00 %N/AN/A
Tier 1 risk-based capital ratio (3)
683,868
 12.38% 331,438
 6.00% 469,538
 8.50% N/A
 N/A
Tier 1 risk-based capital ratio (3)
963,332 10.76 %537,174 6.00 %760,996 8.50 %N/AN/A
Total risk-based capital ratio (4)
824,622
 14.92% 442,157
 8.00% 580,330
 10.50% N/A
 N/A
Total risk-based capital ratio (4)
1,149,943 12.85 %715,918 8.00 %939,642 10.50 %N/AN/A
Brookline Bank               Brookline Bank      
Common equity Tier 1 capital ratio (1)
$407,604
 11.58% $158,395
 4.50% $246,393
 7.00% $228,793
 6.50%
Common equity Tier 1 capital ratio (1)
$574,897 10.90 %$237,343 4.50 %$369,200 7.00 %$342,828 6.50 %
Tier 1 leverage capital ratio (2)
415,378
 10.21% 162,734
 4.00% 162,734
 4.00% 203,417
 5.00%
Tier 1 leverage capital ratio (2)
574,897 9.37 %245,420 4.00 %245,420 4.00 %306,775 5.00 %
Tier 1 risk-based capital ratio (3)
415,378
 11.80% 211,209
 6.00% 299,213
 8.50% 281,612
 8.00%
Tier 1 risk-based capital ratio (3)
574,897 10.90 %316,457 6.00 %448,314 8.50 %421,943 8.00 %
Total risk-based capital ratio (4)
459,389
 13.05% 281,618
 8.00% 369,623
 10.50% 352,022
 10.00%
Total risk-based capital ratio (4)
641,174 12.15 %422,172 8.00 %554,101 10.50 %527,715 10.00 %
BankRI               BankRI      
Common equity Tier 1 capital ratio (1)
$191,682
 11.25% $76,673
 4.50% $119,269
 7.00% $110,750
 6.50%
Common equity Tier 1 capital ratio (1)
$251,358 10.24 %$110,460 4.50 %$171,827 7.00 %$159,553 6.50 %
Tier 1 leverage capital ratio (2)
191,682
 9.15% 83,795
 4.00% 83,795
 4.00% 104,744
 5.00%
Tier 1 leverage capital ratio (2)
251,358 7.91 %127,109 4.00 %127,109 4.00 %158,886 5.00 %
Tier 1 risk-based capital ratio (3)
191,682
 11.25% 102,230
 6.00% 144,826
 8.50% 136,307
 8.00%
Tier 1 risk-based capital ratio (3)
251,358 10.24 %147,280 6.00 %208,647 8.50 %196,373 8.00 %
Total risk-based capital ratio (4)
210,241
 12.34% 136,299
 8.00% 178,892
 10.50% 170,374
 10.00%
Total risk-based capital ratio (4)
282,101 11.50 %196,244 8.00 %257,570 10.50 %245,305 10.00 %
First Ipswich               
PCSB BankPCSB Bank
Common equity Tier 1 capital ratio (1)
$32,681
 11.41% $12,889
 4.50% $20,050
 7.00% $18,618
 6.50%
Common equity Tier 1 capital ratio (1)
162,354 13.04 %$56,027 4.50 %$87,153 7.00 %$80,928 6.50 %
Tier 1 leverage capital ratio (2)
32,681
 8.43% 15,507
 4.00% 15,507
 4.00% 19,384
 5.00%
Tier 1 leverage capital ratio (2)
162,354 8.87 %$73,215 4.00 %$73,215 4.00 %$91,519 5.00 %
Tier 1 risk-based capital ratio (3)
32,681
 11.41% 17,185
 6.00% 24,346
 8.50% 22,914
 8.00%
Tier 1 risk-based capital ratio (3)
162,354 13.04 %$74,703 6.00 %$105,829 8.50 %$99,604 8.00 %
Total risk-based capital ratio (4)
36,270
 12.66% 22,919
 8.00% 30,082
 10.50% 28,649
 10.00%
Total risk-based capital ratio (4)
177,662 14.27 %$99,600 8.00 %$130,725 10.50 %$124,500 10.00 %

(1) Common equity Tier 1 capital ratio is calculated by dividing common equity Tier 1 capital by risk-weighted assets. The ratio was established as part of the implementation of Basel III, effective January 1, 2015.

(2) Tier 1 leverage capital ratio is calculated by dividing Tier 1 capital by average assets.

(3) Tier 1 risk-based capital ratio is calculated by dividing Tier 1 capital by risk-weighted assets.

(4) Total risk-based capital ratio is calculated by dividing total capital by risk-weighted assets.







78

Table of Contents

The following table presents actual and required capital amounts and capital ratios as of December 31, 20162022 for the Company and the Banks under the regulatory capital rules then in effect.Banks.
ActualMinimum Required for Capital Adequacy PurposesMinimum Required for Fully Phased in Capital Adequacy Purposes plus Capital Conservation Buffer
Minimum Required To
Be Considered
 “Well-Capitalized” Under Prompt Corrective Action Provisions
Actual Minimum Required for Capital Adequacy Purposes Minimum Required for Fully Phased in Capital Adequacy Purposes plus Capital Conservation Buffer 
Minimum Required To
Be Considered
 “Well-Capitalized” Under Prompt Corrective Action Provisions
AmountRatioAmountRatioAmountRatioAmountRatio
Amount Ratio Amount Ratio Amount Ratio Amount Ratio(Dollars in Thousands)
(Dollars in Thousands)
At December 31, 2016: 
  
  
      
  
  
At December 31, 2022:At December 31, 2022:      
Brookline Bancorp, Inc. 
  
  
      
  
  
Brookline Bancorp, Inc.      
Common equity Tier 1 capital ratio (1)
$559,644
 10.48% $240,305
 4.50% $373,808
 7.00% N/A
 N/A
Common equity Tier 1 capital ratio (1)
$893,978 12.05 %$333,851 4.50 %$519,323 7.00 %N/AN/A
Tier 1 leverage capital ratio (2)
575,830
 9.16% 251,454
 4.00% 251,454
 4.00% N/A
 N/A
Tier 1 leverage capital ratio (2)
903,695 10.26 %352,318 4.00 %352,318 4.00 %N/AN/A
Tier 1 risk-based capital ratio (3)
575,830
 10.79% 320,202
 6.00% 453,620
 8.50% N/A
 N/A
Tier 1 risk-based capital ratio (3)
903,695 12.18 %445,170 6.00 %630,657 8.50 %N/AN/A
Total risk-based capital ratio (4)
704,675
 13.20% 427,076
 8.00% 560,537
 10.50% N/A
 N/A
Total risk-based capital ratio (4)
1,071,078 14.44 %593,395 8.00 %778,831 10.50 %N/AN/A
Brookline Bank 
  
  
  
      
  
Brookline Bank      
Common equity Tier 1 capital ratio (1)
$384,759
 11.31% $153,087
 4.50% $238,136
 7.00% $221,126
 6.50%
Common equity Tier 1 capital ratio (1)
$570,530 11.24 %$228,415 4.50 %$355,312 7.00 %$329,933 6.50 %
Tier 1 leverage capital ratio (2)
391,964
 10.07% 155,696
 4.00% 155,696
 4.00% 194,620
 5.00%
Tier 1 leverage capital ratio (2)
570,530 9.72 %234,786 4.00 %234,786 4.00 %293,483 5.00 %
Tier 1 risk-based capital ratio (3)
391,964
 11.53% 203,971
 6.00% 288,959
 8.50% 271,961
 8.00%
Tier 1 risk-based capital ratio (3)
570,530 11.24 %304,553 6.00 %431,451 8.50 %406,071 8.00 %
Total risk-based capital ratio (4)
428,966
 12.61% 272,143
 8.00% 357,188
 10.50% 340,179
 10.00%
Total risk-based capital ratio (4)
634,226 12.50 %405,905 8.00 %532,750 10.50 %507,381 10.00 %
BankRI               BankRI
Common equity Tier 1 capital ratio (1)
$182,202
 10.94% $74,946
 4.50% $116,583
 7.00% $108,255
 6.50%
Common equity Tier 1 capital ratio (1)
$244,422 10.32 %$106,579 4.50 %$165,790 7.00 %$153,948 6.50 %
Tier 1 leverage capital ratio (2)
182,202
 8.97% 81,249
 4.00% 81,249
 4.00% 101,562
 5.00%
Tier 1 leverage capital ratio (2)
244,422 8.13 %120,257 4.00 %120,257 4.00 %150,321 5.00 %
Tier 1 risk-based capital ratio (3)
182,202
 10.94% 99,928
 6.00% 141,565
 8.50% 133,237
 8.00%
Tier 1 risk-based capital ratio (3)
244,422 10.32 %142,106 6.00 %201,317 8.50 %189,474 8.00 %
Total risk-based capital ratio (4)
197,702
 11.87% 133,245
 8.00% 174,884
 10.50% 166,556
 10.00%
Total risk-based capital ratio (4)
274,091 11.57 %189,518 8.00 %248,743 10.50 %236,898 10.00 %
First Ipswich 
  
  
  
      
  
Common equity Tier 1 capital ratio (1)
$33,433
 12.61% $11,931
 4.50% $18,559
 7.00% $17,234
 6.50%
Tier 1 leverage capital ratio (2)
33,433
 9.23% 14,489
 4.00% 14,489
 4.00% 18,111
 5.00%
Tier 1 risk-based capital ratio (3)
33,433
 12.61% 15,908
 6.00% 22,536
 8.50% 21,210
 8.00%
Total risk-based capital ratio (4)
36,053
 13.60% 21,208
 8.00% 27,835
 10.50% 26,510
 10.00%

(1) Common equity Tier 1 capital ratio is calculated by dividing common equity Tier 1 capital by risk-weighted assets. The ratio was established as part of the implementation of Basel III, effective January 1, 2015.

(2) Tier 1 leverage capital ratio is calculated by dividing Tier 1 capital by average assets.

(3) Tier 1 risk-based capital ratio is calculated by dividing Tier 1 capital by risk-weighted assets.

(4) Total risk-based capital ratio is calculated by dividing total capital by risk-weighted assets.


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Table of Contents
Item 3. Quantitative and Qualitative Disclosures about Market Risk
Market Risk
Market risk is the risk that the market value or estimated fair value of the Company's assets, liabilities, and derivative financial instruments will decline as a result of changes in interest rates or financial market volatility, or that the Company's net income will be significantly reduced by interest-rate changes.
Interest-Rate Risk
The principal market risk facing the Company is interest-rate risk, which can occur in a variety of forms, including repricing risk, yield-curve risk, basis risk, and prepayment risk. Repricing risk occurs when the change in the average yield of either interest-earning assets or interest-bearing liabilities is more sensitive than the other to changes in market interest rates. Such a change in sensitivity could reflect a number of possible mismatches in the repricing opportunities of the Company's assets and liabilities. Yield-curve risk reflects the possibility that changes in the shape of the yield curve could have different effects on the Company's assets and liabilities. Basis risk occurs when different parts of the balance sheet are subject to varying base rates reflecting the possibility that the spread from those base rates will deviate. Prepayment risk is associated with financial instruments with an option to prepay before the stated maturity, often a disadvantage to person selling the option; this risk is most often associated with the prepayment of loans, callable investments, and callable borrowings.
Asset/Liability Management
Market risk and interest-rate risk management is governed by the Company's Asset/Liability Committee ("ALCO"). The ALCO establishes exposure limits that define the Company's tolerance for interest-rate risk. The ALCO and the Company's Treasury Group measure and manage the composition of the balance sheet over a range of possible changes in interest rates while remaining responsive to market demand for loan and deposit products. The ALCO monitors current exposures versus limits and reports those results to the Board of Directors. The policy limits and guidelines serve as benchmarks for measuring interest-rate risk and for providing a framework for evaluation and interest-rate risk-management decision-making. The Company measures its interest-rate risk by using an asset/liability simulation model. The model considers several factors to determine the Company's potential exposure to interest-rate risk, including measurement of repricing gaps, duration, convexity, value-at-risk, market value of portfolio equity under assumed changes in the level of interest rates, the shape of yield curves, and general market volatility.
Management controls the Company's interest-rate exposure using several strategies, which include adjusting the maturities of securities in the Company's investment portfolio, limiting or expanding the terms of loans originated, limiting fixed-rate deposits with terms of more than five years, and adjusting maturities of FHLBBFHLB advances. The Company limits this risk by restricting the types of MBSs it invests in tointo those with limited average life changes under certain interest-rate-shock scenarios, or securities with embedded prepayment penalties. The Company also places limits on holdings of fixed-rate mortgage loans with maturities greater than five years. The Company may also use derivative instruments, principally interest-rateenters into interest rate swaps to manageas part of its interest-rate risk; however,interest rate risk management strategy. These interest rate swaps are designated as cash flow hedges and involve the receipt of variable rate amounts from a counterparty in exchange for the Company had no derivative fair value hedges or derivative cash flows hedges as of September 30, 2017 or December 31, 2016. See Note 8, “Derivatives and Hedging Activities,” to the unaudited consolidated financial statements.making fixed payments.
Measuring Interest-Rate Risk
As noted above, interest-rate risk can be measured by analyzing the extent to which the repricing of assets and liabilities are mismatched to create an interest-rate sensitivity gap. An asset or liability is said to be interest-rate sensitive within a specific period if it will mature or reprice within that period. The interest-rate sensitivity gap is defined as the difference between the amount of interest-earning assets maturing or repricing within a specific time period and the amount of interest-bearing liabilities maturing or repricing within that same time period. A gap is considered positive when the amount of interest-rate-sensitive assets exceeds the amount of interest-rate-sensitive liabilities. A gap is considered negative when the amount of interest-rate-sensitive liabilities exceeds the amount of interest-rate-sensitive assets. During a period of falling interest rates, therefore, a positive gap would tend to adversely affect net interest income. Conversely, during a period of rising interest rates, a positive gap position would tend to result in an increase in net interest income.
The Company's interest-rate risk position is measured using both income simulation and interest-rate sensitivity "gap" analysis. Income simulation is the primary tool for measuring the interest-rate risk inherent in the Company's balance sheet at a given point in time by showing the effect on net interest income, over a twelve-month period, of a variety of interest-rate shocks. These simulations take into account repricing, maturity, and prepayment characteristics of individual products. The ALCO reviews simulation results to determine whether exposure resulting from changes in market interest rates remains within

established tolerance levels over a twelve-month horizon, and develops appropriate strategies to manage this exposure. The Company's interest-rate risk analysis remains modestly asset-sensitive as of September 30, 2017.March 31, 2023.
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The assumptions used in the Company’s interest-rate sensitivity simulation discussed above are inherently uncertain and, as a result, the simulations cannot precisely measure net interest income or precisely predict the impact of changes in interest rates.
As of September 30, 2017,March 31, 2023, net interest income simulation indicated that the Company's exposure to changing interest rates was within tolerance. The ALCO reviews the methodology utilized for calculating interest-rate risk exposure and may periodically adopt modifications to this methodology. The following table presents the estimated impact of interest-rate changes on the Company's estimated net interest income over the twelve-month periods indicated:indicated while maintaining a flat balance sheet:
 
Estimated Exposure to Net Interest Income
over Twelve-Month Horizon Beginning
 September 30, 2017 December 31, 2016
Gradual Change in Interest Rate Levels
Dollar
Change
 
Percent
Change
 Dollar
Change
 Percent
Change
 (Dollars in Thousands)
Up 300 basis points$11,110
 4.9 % $6,403
 3.0 %
Up 200 basis points7,740
 3.4 % 4,420
 2.1 %
Up 100 basis points4,063
 1.8 % 2,288
 1.1 %
Down 100 basis points(10,141) -4.4 % (5,196) -2.5 %

Estimated Exposure to Net Interest Income
over Twelve-Month Horizon Beginning
March 31, 2023December 31, 2022
Change in Interest Rate LevelsDollar
Change
Percent
Change
Dollar
Change
Percent
Change
 (Dollars in Thousands)
Up 300 basis points shock$35,342 10.1 %$22,790 7.4 %
Up 200 basis points ramp12,307 3.5 %8,747 2.8 %
Up 100 basis points ramp6,448 1.8 %4,477 1.5 %
Down 100 basis points ramp(7,621)(2.2)%(6,160)(2.0)%
The estimated impact of a 300 basis point increase in market interest rates on the Company's estimated net interest income over a twelve-month horizon was a positive 4.9%10.1% as of September 30, 2017,March 31, 2023, compared to a positive 3.0%7.4% as of December 31, 2016, the increase in2022. The balance sheet became more asset sensitivity wassensitive due to a change inhigh levels of cash on the funding mix, as core deposits and issued common stock funded balance sheet growth.

sheet.
The Company also uses interest-rate sensitivity “gap” analysis to provide a more general overview of its interest-rate risk profile. The interest-rate sensitivity gap is defined as the difference between interest-earning assets and interest-bearing
liabilities maturing or repricing within a given time period. At September 30, 2017,March 31, 2023, the Company’s one-year cumulative gap was a negative $55.6positive $264.0 million, or 0.9%2.29% of total interest-earning assets, compared with a negative $275.3positive $9.3 million, or 4.56%0.11% of total interest-earning assets, at December 31, 2016.
2022.
The assumptions used in the Company's interest-rate sensitivity simulation discussed above are inherently uncertain and, as a result, the simulations cannot precisely measure net interest income or precisely predict the impact of changes in interest rates. For additional discussion on interest-rate risk see Item 7A, “Quantitative and Qualitative Disclosures about Market Risk” of the Company’s 20162022 Annual Report on Form 10-K.

Economic Value of Equity ("EVE") at Risk Simulation is conducted in tandem with net interest income simulations to ascertain a longer term view of the Company’s interest-rate risk position by capturing longer-term repricing risk and options risk embedded in the balance sheet. It measures the sensitivity of the economic value of equity to changes in interest rates. The EVE at Risk Simulation values only the current balance sheet and does not incorporate growth assumptions. As with the net interest income simulation, this simulation captures product characteristics such as loan resets, repricing terms, maturity dates, and rate caps and floors. Key assumptions include loan prepayment speeds, deposit pricing elasticity, and non-maturity deposit attrition rates. These assumptions can have significant impacts on valuation results as the assumptions remain in effect for the entire life of each asset and liability. The Company conducts non-maturity deposit behavior studies on a periodic basis to support deposit assumptions used in the valuation process. All key assumptions are subject to a periodic review.

EVE at Risk is calculated by estimating the net present value of all future cash flows from existing assets and liabilities using current interest rates as well as parallel shocks to the current interest-rate environment. The following table sets forth the estimated percentage change in the Company’s EVE at Risk, assuming various shifts in interest rates. Given the interest rate environment as of September 30, 2017, simulations for interest rate declines of more than 100 basis points were not deemed to be meaningful.

Estimated Percent Change in Economic Value of Equity
Parallel Shock in Interest Rate LevelsAt March 31, 2023At December 31, 2022
Up 300 basis points(0.80)%0.30 %
Up 200 basis points(0.58)%0.51 %
Up 100 basis points0.42 %0.83 %
Down 100 basis points(2.82)%(2.95)%
  Estimated Percent Change in Economic Value of Equity
Parallel Shock in Interest Rate Levels At September 30, 2017
At December 31, 2016
Up 300 basis points 2.5 % -4.6 %
Up 200 basis points 1.6 % -4.4 %
Up 100 basis points 1.5 % -1.6 %
Down 100 basis points -9.1 % -6.4 %


The Company's EVEEVE-at-risk asset sensitivity for Up shock scenarios moveddecreased from a negative outcome at December 31, 20162022 to a positive outcome at September 30, 2017March 31, 2023 due to the issuance of common stock which replaced short wholesale fundinghigher cash balances and higher short-term borrowings balances, as well as the durationa more inverted yield curve.

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Table of assets shortened due to increased prepayments driven by lower, long term rates.Contents

Item 4. Controls and Procedures
 
Controls and Procedures
 
Under the supervision and with the participation of the Company’s Management,management, including the Company’s Chief Executive Officer (Principal Executive Officer) and Chief Financial Officer (Principal Financial Officer), the Company has evaluated the effectiveness of its disclosure controls and procedures (as defined in Rule 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this report. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer considered that, as of the end of the period covered by this report, the Company’s disclosure controls and procedures were effective to ensure that information required to be disclosed in the reports that the Company files or submits under the Exchange Act is (i) recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms and (ii) accumulated and communicated to the Company’s Management,management, including its Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.
There has been no change in the Company’s internal control over financial reporting identified in connection with the quarterly evaluation that occurred during the Company’s last fiscal quarter that has materially and detrimentally affected, or is reasonably likely to materially and detrimentally affect, the Company’s internal controls over financial reporting.

The Company’s Managementmanagement is responsible for establishing and maintaining adequate internal control over financial reporting as such term is defined in Exchange Act Rule 13a -15(f). The Company’s internal control system was designed to provide reasonable assurance to its Managementmanagement and the Board of Directors regarding the preparation and fair presentation of published financial statements. All internal control systems, no matter how well designed, have inherent limitations. Therefore, even those systems determined to be effective can provide only reasonable assurance with respect to financial statement preparation and presentation. The Company’s Managementmanagement assessed the effectiveness of its internal control over financial reporting as of the end of the period covered by this report.
 
Management’s Report on Internal Control Over Financial Reporting as of December 31, 20162022 and the related Report of Independent Registered Public Accounting Firm thereon appear on pages F-1 and F-2 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2016.2022.

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PART II — OTHER INFORMATION
Item 1. Legal Proceedings
 
There are no material pending legal proceedings other than those that arise in the normal course of business. In the opinion of Management, after consulting with legal counsel, the consolidated financial position and results of operations of the Company are not expected to be affected materially by the outcome of such proceedings. 


Item 1A.    Risk Factors


There have been no material changes to the risk factors disclosed in Item 1AThis section supplements and updates certain of the Company’sinformation found under Part I, Item 1A. “Risk Factors” of our Annual Report on Form 10-K for the year ended December 31, 2016.2022 filed with the SEC on February 27, 2023 (“Annual Report”), based on information currently known to us and recent developments since the date of the Annual Report filing. The matters discussed below should be read in conjunction with the risks described in Part I. Item 1A. “Risk Factors” of our Annual Report. However, the risks and uncertainties that we face are not limited to those described below and those set forth in the Annual Report. Additional risks and uncertainties not presently known to us or that we currently believe to be immaterial may also adversely affect our business and the trading price of our common stock.


Adverse developments affecting the financial services industry, such as actual events or concerns involving liquidity, defaults, or non-performance by financial institutions or transactional counterparties, could adversely affect our financial condition and results of operations.

Actual events involving limited liquidity, defaults, non-performance or other adverse developments that affect financial institutions, transactional counterparties or other companies in the financial services industry or the financial services industry generally, or concerns or rumors about any events of these kinds or other similar risks, have in the past and may in the future lead to market-wide liquidity problems. For example, on May 1, 2023, First Republic Bank went into receivership and its deposits and substantially all of its assets were acquired by JPMorgan Chase Bank, National Association. Similarly, on March 10, 2023, Silicon Valley Bank went into receivership, and on March 12, Signature Bank went into receivership.

Inflation and rapid increases in interest rates have led to a decline in the trading value of previously issued government securities with interest rates below current market interest rates. Although the Treasury, FDIC and FRB have announced a program to provide up to $25 billion of loans to financial institutions secured by certain of such government securities held by financial institutions to mitigate the risk of potential losses on the sale of such instruments, widespread demands for customer withdrawals or other liquidity needs of financial institutions for immediately liquidity may exceed the capacity of such program. Additionally, there is no guarantee that the Treasury, FDIC and FRB will provide access to uninsured funds in the future in the event of the closure of other banks or financial institutions, or that they would do so in a timely fashion.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds


a)        Not applicable.
 
b)        Not applicable.
 
c)        None.Not applicable.


Item 3. Defaults Upon Senior Securities


a)        None.
 
b)        None.


Item 4.    Mine Safety Disclosures


Not applicable.


Item 5.    Other Information


None.



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Item 6. Exhibits
 
Exhibits
Exhibit 2.110.1
Exhibit 10.131.1*
Exhibit 10.2
Exhibit 31.1*
Exhibit 31.2*
Exhibit 32.1**
Exhibit 32.2**
101.INSXBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document
101.SCHXBRL Taxonomy Extension Schema Document
101.CALXBRL Taxonomy Extension Calculation Linkbase Document
101.DEFXBRL Taxonomy Extension Definition Linkbase Document
101.LABXBRL Taxonomy Extension Label Linkbase Document
101.PREXBRL Taxonomy Extension Presentation Linkbase Document
104Cover Page Interactive Data File (formatted in Inline XBRL and included in Exhibit 101The following materials from Brookline Bancorp, Inc.’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2017, formatted in XBRL (eXtensible Business Reporting Language): (1) Unaudited Consolidated Balance Sheets as of September 30, 2017 and September 30, 2016; (2) Unaudited Consolidated Statements of Income for the three and nine months September 30, 2017 and September 30, 2016; (3) Unaudited Consolidated Statements of Comprehensive Income for the three and nine months September 30, 2017 and September 30, 2016; (4) Unaudited Consolidated Statements of Changes in Equity for the nine months ended September 30, 2017 and September 30, 2016; (5) Unaudited Consolidated Statements of Cash Flows for the nine months ended September 30, 2017 and September 30, 2016; and (6) Notes to Unaudited Consolidated Financial Statements at and for the nine months ended September 30, 2017 and September 30, 2016.101)

* Filed herewith
** Furnished herewith

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SIGNATURES
 
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

BROOKLINE BANCORP, INC.
Date: November 3, 2017May 10, 2023By:/s/ Paul A. Perrault
Paul A. Perrault
President and Chief Executive Officer
(Principal Executive Officer)
Date: November 3, 2017May 10, 2023By:/s/ Carl M. Carlson
Carl M. Carlson
Co-President and Chief Financial Officer
(Principal Financial Officer)







100
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