10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549 

Form 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2023

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number:  001-33912

 Enterprise Bancorp, Inc.

(Exact name of registrant as specified in its charter)

Massachusetts			04-3308902
(State or other jurisdiction of			(I.R.S. Employer Identification No.)
incorporation or organization)
222 Merrimack Street,	Lowell,	Massachusetts	01852
(Address of principal executive offices)			(Zip code)

 (978) 459-9000

(Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.01 par value per share	EBTC	NASDAQ Stock 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.     x Yes o No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files).      x Yes o No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See definition for "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act. 

Large accelerated filer ☐ Accelerated filer x

Non-accelerated filer ☐ Smaller reporting company ☐ Emerging growth company ☐

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.     ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

     ☐ Yes x No

As of April 28, 2023, there were 12,221,905 shares of the issuer's common stock outstanding, par value $0.01 per share.

ENTERPRISE BANCORP, INC.

INDEX

		Page Number
	Cover Page	1
	Index	2
	PART I - FINANCIAL INFORMATION
Item 1	Financial Statements (unaudited)	3
	Consolidated Balance Sheets - March 31, 2023 and December 31, 2022	3
	Consolidated Statements of Income - Three months ended March 31, 2023 and 2022	4
	Consolidated Statements of Comprehensive Income - Three months ended March 31, 2023 and 2022	5
	Consolidated Statements of Changes in Shareholders' Equity - Three months ended March 31, 2023 and 2022	6
	Consolidated Statements of Cash Flows - Three months ended March 31, 2023 and 2022	7
	Notes to Unaudited Consolidated Interim Financial Statements	8
Item 2	Management's Discussion and Analysis of Financial Condition and Results of Operations	30
Item 3	Quantitative and Qualitative Disclosures About Market Risk	43
Item 4	Controls and Procedures	44
	PART II - OTHER INFORMATION
Item 1	Legal Proceedings	44
Item 1A	Risk Factors	44
Item 2	Unregistered Sales of Equity Securities and Use of Proceeds	45
Item 3	Defaults Upon Senior Securities	45
Item 4	Mine Safety Disclosures	45
Item 5	Other Information	45
Item 6	Exhibits	46
	Signature page	47

2

PART I-FINANCIAL INFORMATION

Item 1 -Financial Statements

ENTERPRISE BANCORP, INC.

Consolidated Balance Sheets

(Unaudited)

(Dollars in thousands, except per share data)	March 31, 2023		December 31, 2022
Assets
Cash and cash equivalents:
Cash and due from banks	$	42,843	$	36,901
Interest-earning deposits with banks	172,850		230,688
Total cash and cash equivalents	215,693		267,589
Investments:
Debt securities at fair value (amortized cost of $923,485 and $940,227, respectively)	825,520		816,102
Equity securities at fair value	5,375		4,269
Total investment securities at fair value	830,895		820,371
Federal Home Loan Bank ("FHLB") stock	2,343		2,343
Loans held for sale	362		—
Loans:
Total loans	3,230,156		3,180,518
Allowance for credit losses	(55,002)		(52,640)
Net loans	3,175,154		3,127,878
Premises and equipment, net	43,821		44,228
Lease right-of-use asset	24,751		24,923
Accrued interest receivable	18,540		17,117
Deferred income taxes, net	44,432		51,981
Bank-owned life insurance	64,463		64,156
Prepaid income taxes	3,636		683
Prepaid expenses and other assets	12,150		11,408
Goodwill	5,656		5,656
Total assets	$	4,441,896	$	4,438,333
Liabilities and shareholders' Equity
Liabilities
Deposits	$	4,016,156	$	4,035,806
Borrowed funds	3,199		3,216
Subordinated debt	59,261		59,182
Lease liability	24,285		24,415
Accrued expenses and other liabilities	25,737		31,442
Accrued interest payable	1,940		2,005
Total liabilities	4,130,578		4,156,066
Commitments and Contingencies
Shareholders' Equity
Preferred stock, $0.01 par value per share; 1,000,000 shares authorized; no shares issued	—		—
Common stock, $0.01 par value per share; 40,000,000 shares authorized; 12,222,717 and 12,133,516 shares issued and outstanding, respectively	122		121
Additional paid-in capital	104,621		103,793
Retained earnings	282,534		274,560
Accumulated other comprehensive loss	(75,959)		(96,207)
Total shareholders' equity	311,318		282,267
Total liabilities and shareholders' equity	$	4,441,896	$	4,438,333

See the accompanying notes to the unaudited consolidated interim financial statements.

3

ENTERPRISE BANCORP, INC.

Consolidated Statements of Income

(Unaudited)

	Three months ended March 31,
(Dollars in thousands, except per share data)	2023		2022
Interest and dividend income:
Loans and loans held for sale	$	39,556	$	30,695
Investment securities	5,073		4,588
Other interest-earning assets	2,208		181
Total interest and dividend income	46,837		35,464
Interest expense:
Deposits	5,987		600
Borrowed funds	12		13
Subordinated debt	867		818
Total interest expense	6,866		1,431
Net interest income	39,971		34,033
Provision for credit losses	2,736		530
Net interest income after provision for credit losses	37,235		33,503
Non-interest income:
Wealth management fees	1,587		1,729
Deposit and interchange fees	2,048		1,802
Income on bank-owned life insurance, net	307		295
Net gains on sales of debt securities	—		1,062
Net gains on sales of loans	14		22
Loss on equity securities	(16)		(67)
Other income	817		752
Total non-interest income	4,757		5,595
Non-interest expense:
Salaries and employee benefits	18,521		16,792
Occupancy and equipment expenses	2,501		2,415
Technology and telecommunications expenses	2,675		2,636
Advertising and public relations expenses	681		667
Audit, legal and other professional fees	640		710
Deposit insurance premiums	675		556
Supplies and postage expenses	255		220
Other operating expenses	2,092		1,761
Total non-interest expense	28,040		25,757
Income before income taxes	13,952		13,341
Provision for income taxes	3,184		3,054
Net income	$	10,768	$	10,287
Basic earnings per share	$	0.89	$	0.85
Diluted earnings per share	$	0.88	$	0.85
Basic weighted average common shares outstanding	12,155,320		12,055,991
Diluted weighted average common shares outstanding	12,193,756		12,119,836

See the accompanying notes to the unaudited consolidated interim financial statements.

4

ENTERPRISE BANCORP, INC.

Consolidated Statements of Comprehensive Income

(Unaudited)

	Three months ended March 31,
(Dollars in thousands)	2023		2022
Net income	$	10,768	$	10,287
Other comprehensive income (loss), net of tax
Net change in fair value of debt securities	20,248		(44,962)
Total other comprehensive income (loss), net of tax	20,248		(44,962)
Total comprehensive income (loss), net	$	31,016	$	(34,675)

See the accompanying notes to the unaudited consolidated interim financial statements.

5

ENTERPRISE BANCORP, INC.

Consolidated Statements of Changes in Shareholders' Equity

(Unaudited)

	Common Stock			Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Total Shareholders' Equity
(Dollars in thousands, except per share data)	Shares	Amount
Balance at December 31, 2022	12,133,516	$	121	$	103,793	$	274,560	$	(96,207)	$	282,267
Net income						10,768				10,768
Other comprehensive income, net								20,248		20,248
Common stock dividend declared ($0.230 per share)						(2,794)				(2,794)
Common stock issued under dividend reinvestment plan	10,395	—		370						370
Common stock issued, other	207	—		7						7
Stock-based compensation, net	70,943	1		710						711
Net settlement for employee taxes on restricted stock and options	(5,954)	—		(348)						(348)
Stock options exercised, net	13,610	—		89						89
Balance at March 31, 2023	12,222,717	$	122	$	104,621	$	282,534	$	(75,959)	$	311,318
Balance at December 31, 2021	12,038,382	$	120	$	100,352	$	241,761	$	4,662	$	346,895
Net income						10,287				10,287
Other comprehensive loss, net								(44,962)		(44,962)
Common stock dividend declared ($0.205 per share)						(2,469)				(2,469)
Common stock issued under dividend reinvestment plan	8,915	—		346						346
Common stock issued, other	241	—		10						10
Stock-based compensation, net	59,949	1		659						660
Net settlement for employee taxes on restricted stock and options	(7,728)	—		(286)						(286)
Stock options exercised, net	3,429	—		58						58
Balance at March 31, 2022	12,103,188	$	121	$	101,139	$	249,579	$	(40,300)	$	310,539

See the accompanying notes to the unaudited consolidated interim financial statements.

6

ENTERPRISE BANCORP, INC.

Consolidated Statements of Cash Flows

(Unaudited)

	Three months ended March 31,
(Dollars in thousands)	2023		2022
Cash flows from operating activities:
Net income	$	10,768	$	10,287
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for credit losses	2,736		530
Depreciation and amortization	1,660		1,733
Stock-based compensation expense	522		478
Income on bank-owned life insurance, net	(307)		(295)
Net gains on sales of debt securities	—		(1,062)
Mortgage loans originated for sale	(1,188)		(819)
Proceeds from mortgage loans sold	840		841
Net gains on sales of loans	(14)		(22)
Net loss on equity securities	16		67
Changes in:
Net increase in other assets	(3,597)		(6,124)
Net decrease in other liabilities	(5,762)		(8,879)
Net cash provided by (used in) operating activities	5,674		(3,265)
Cash flows from investing activities:
Proceeds from sales of debt securities	—		32,715
Purchase of debt securities	—		(66,833)
Proceeds from maturities, calls and pay-downs of debt securities	16,433		26,067
Net purchases of equity securities	(1,122)		(1,243)
Net purchases of FHLB capital stock	—		116
Net increase in loans	(49,594)		(42,142)
Additions to premises and equipment, net	(944)		(1,719)
Net cash used in investing activities	(35,227)		(53,039)
Cash flows from financing activities:
Net (decrease) increase in deposits	(19,650)		54,261
Net decrease in borrowed funds	(17)		(2,505)
Cash dividends paid, net of dividend reinvestment plan	(2,424)		(2,123)
Proceeds from issuance of common stock	7		10
Net settlement for employee taxes on restricted stock and options	(348)		(286)
Net proceeds from stock option exercises	89		58
Net cash (used in) provided by financing activities	(22,343)		49,415
Net decrease in cash and cash equivalents	(51,896)		(6,889)
Cash and cash equivalents at beginning of period	267,589		436,576
Cash and cash equivalents at end of period	$	215,693	$	429,687

See the accompanying notes to the unaudited consolidated interim financial statements.

7

Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

(1)Summary of Significant Accounting Policies

(a) Organization of the Company and Basis of Presentation

The accompanying unaudited consolidated interim financial statements and these notes should be read in conjunction with the December 31, 2022 audited consolidated financial statements and notes thereto contained in the Annual Report on Form 10-K of Enterprise Bancorp, Inc. (the "Company," "Enterprise," "we," or "our") for the year ended December 31, 2022 (the "2022 Annual Report on Form 10-K") as filed with the Securities and Exchange Commission (the "SEC") on March 8, 2023. The Company has not materially changed its significant accounting policies from those disclosed in its 2022 Annual Report on Form 10-K. See Item (d), "Recent Accounting Pronouncements," below in this Note 1.

The accompanying unaudited consolidated interim financial statements of the Company include the accounts of the Company and its wholly owned subsidiary, Enterprise Bank and Trust Company, commonly referred to as Enterprise Bank (the "Bank"). The Bank is a Massachusetts trust company and state chartered commercial bank organized in 1989. Substantially all of the Company's operations are conducted through the Bank and its subsidiaries.

The Bank's subsidiaries include Enterprise Insurance Services, LLC and Enterprise Wealth Services, LLC, both organized under the laws of the State of Delaware, to engage in insurance sales activities and offer non-deposit investment products and services, respectively. In addition, the Bank has the following subsidiaries that are incorporated in the Commonwealth of Massachusetts and classified as security corporations in accordance with applicable Massachusetts General Laws: Enterprise Security Corporation; Enterprise Security Corporation II; and Enterprise Security Corporation III. The security corporations, which hold various types of qualifying securities, are limited to conducting investment activities that the Bank itself would be allowed to conduct under applicable laws. In February 2023, the Bank organized the EBTC NMTC Investment Fund - CHC, LLC (the "NMTC Investment Fund") under the laws of the State of Delaware, in conjunction with the Banks investment in a qualifying New Market Tax Credit ("NMTC") project. The NMTC Investment Fund is the Company's only unconsolidated Variable Interest Entity ("VIE"). The services offered through the Bank and its subsidiaries are managed as one strategic unit and represent the Company's only reportable operating segment.

The accompanying unaudited consolidated interim financial statements, and notes thereto, in this Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2023 (this "Form 10-Q"), have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and the SEC instructions for Quarterly Reports on Form 10-Q. In the opinion of management, the accompanying unaudited consolidated interim financial statements reflect all necessary adjustments, consisting of normal recurring accruals and elimination of intercompany balances, for a fair presentation. Interim results are not necessarily indicative of results to be expected for the entire year, or any future period.

(b) Uses of Estimates

In preparing the unaudited consolidated interim financial statements in conformity with GAAP, management is required to exercise judgment in determining many of the methodologies, assumptions and estimates to be utilized. These assumptions and estimates affect the reported values of assets and liabilities as of the balance sheet dates and income and expenses for the period then ended. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates should the assumptions and estimates used be incorrect or change over time due to changes in circumstances. Changes in those estimates resulting from continuing changes in the economic environment and other factors will be reflected in the consolidated financial statements and results of operations in future periods.

As discussed in the Company's 2022 Annual Report on Form 10-K, the most significant areas in which management applies critical assumptions and estimates are: the estimates of the allowance for credit losses ("ACL") for loans, available for sale securities and reserve for unfunded commitments, and the impairment review of goodwill. Refer to Note 1, "Summary of Significant Accounting Policies," to the Company's audited consolidated financial statements included in the Company's 2022 Annual Report on Form 10-K for accounting policies related to these significant estimates.

(c) Unconsolidated Variable Interest Entity / Proportional Accounting

In March 2023, the Bank made an equity contribution to the NMTC Investment Fund a newly formed Limited Liability Company in order to invest in NMTC, a program, which is administered by the U.S. Department of the Treasury's Community Development Financial Institutions Fund and allocated to Community Development Entities ("CDE").

The NMTC program provides federal tax incentives for investments in distressed communities and promotes economic improvements through the development of successful businesses in these communities. The NMTCs are available to investors

8

Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

over a seven-year period and are subject to recapture if certain events occur during such period. The Bank invested $3.7 million in the Investment Fund and anticipates receiving $4.8 million of federal tax credits over the next seven years (5% in each of the first three years, and 6% in each of the next four years). The underlying project is structured through a qualified CDE, which in turn has made loans to a qualified active low-income business. The Bank has no unfunded commitments associated with its NMTC investment. The Company has elected to account for the tax equity investment, using the proportional amortization method. Under this method the NMTC Investment Fund is not consolidated with the Company and instead, the initial cost of the investment is amortized in proportion to the amount of tax credits and other tax benefits received over the allotment period. The investment is carried within the line "Prepaid expenses and other assets" on the Company's Consolidated Balance Sheet and the investment amortization expense and tax credits are presented on a net basis within the line "Provision for income taxes" on the Company's Consolidated Statements of Income. During the three months ended March 31, 2023, the related amortization expense and tax credits amounted to $44 thousand and $153 thousand, respectively.

(d) Recent Accounting Pronouncements

Accounting pronouncements adopted by the Company

In March 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2023-02, "Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method." ASU 2023-02 permits reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. The election can be made for each individual qualifying tax credit investment. Under the proportional amortization method, the initial cost of an investment is amortized in proportion to the amount of tax credits and other tax benefits received, with the amortization and tax credits recognized as a component of income tax expense. To qualify for the proportional amortization method, all of the following conditions must be met: (1) It is probable that the income tax credits allocated to the tax equity investor will be available; (2) The tax equity investor does not have the ability to exercise significant influence over the operating and financial policies of the underlying project; (3) Substantially all of the projected benefits are from income tax credits and other income tax benefits; (4) The tax equity investor's projected yield based solely on the cash flows from the income tax credits and other income tax benefits is positive; and (5) The tax equity investor is a limited liability investor in the limited liability entity for both legal and tax purposes, and the tax equity investor's liability is limited to its capital investment. Under the proportional amortization method, the investment shall be tested for impairment when events or changes in circumstances indicate that it is more likely than not that the carrying amount of the investment will not be realized. An impairment loss shall be measured as the amount by which the carrying amount of an investment exceeds its fair value. A previously recognized impairment loss shall not be reversed. ASU 2023-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2023. The Company has elected to early adopt ASU 2022-01 effective on January 1, 2023, applying the new guidance to a new investment in NMTC made in the first quarter of 2023, and the adoption did not have a significant impact on the financial statements.

In March 2022, the FASB issued ASU 2022-01, "Derivatives and Hedging (Topic 815): Fair Value Hedging—Portfolio Layer Method." This ASU clarifies the guidance on fair value hedge accounting of interest rate risk for portfolios of financial assets. The ASU amends the guidance in ASU 2017-12, "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities," that, among other things, established the "last-of-layer" method for making the fair value hedge accounting for these portfolios more accessible. ASU 2022-01 renames that method the "portfolio layer" method and addresses feedback from stakeholders regarding its application. The Company adopted ASU 2022-01 effective on January 1, 2023 and the adoption did not have a significant impact on the financial statements.

In March 2022, the FASB issued ASU 2022-02, "Financial Instruments—Credit Losses (Topic 326), Troubled Debt Restructurings and Vintage Disclosures." This ASU eliminates the accounting guidance for troubled debt restructurings by creditors that have adopted the current expected credit loss ("CECL") methodology for estimating allowances for credit losses and enhances the disclosure requirements for loan restructurings made with borrowers experiencing financial difficulty. In addition, the amendments require a public business entity to disclose current-period gross charge-offs for financing receivables and net investment in leases by year of origination in the vintage disclosures. The Company adopted ASU 2022-02 effective on January 1, 2023, prospectively, and the adoption did not have a significant impact on the financial statements.

(e) Subsequent Events

The Company has evaluated subsequent events and transactions from March 31, 2023 through the date this Form 10-Q was filed with the SEC for potential recognition or disclosure as required by GAAP and determined there were no material subsequent events requiring recognition or disclosure.

9

Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

(2)    Investment Securities

Debt Securities

All of the Company's debt securities were classified as available-for-sale and carried at fair value as of the dates specified in the tables below. The amortized cost and fair values of debt securities at the dates specified are summarized as follows:

	March 31, 2023
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Federal agency obligations	$	5,012	$	1	$	—	$	5,013
U.S. treasury securities	45,955		—		2,045		43,910
Federal agency collateralized mortgage obligations ("CMO")	461,436		203		54,796		406,843
Federal agency mortgage-backed securities ("MBS")	23,892		64		2,776		21,180
Taxable municipal securities	287,421		36		37,173		250,284
Tax-exempt municipal securities	82,182		246		485		81,943
Corporate bonds	5,636		—		109		5,527
Subordinated corporate bonds	11,951		—		1,131		10,820
Total debt securities, at fair value	$	923,485	$	550	$	98,515	$	825,520

	December 31, 2022
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Federal agency obligations	$	5,014	$	—	$	37	$	4,977
U.S. treasury securities	45,942		—		2,691		43,251
Federal agency CMO	474,777		3		67,798		406,982
Federal agency MBS	24,172		27		3,178		21,021
Taxable municipal securities	287,435		29		48,187		239,277
Tax-exempt municipal securities	84,457		66		870		83,653
Corporate bonds	6,480		—		186		6,294
Subordinated corporate bonds	11,950		—		1,303		10,647
Total debt securities, at fair value	$	940,227	$	125	$	124,250	$	816,102

At March 31, 2023, management performed its quarterly analysis of all securities with unrealized losses and determined that the losses were primarily attributable to significant increases in market interest rates experienced during the last twelve months. Management concluded that no ACL for available-for-sale securities was necessary as of March 31, 2023 and anticipates they will mature or be called at par value.

Accrued interest receivable on available-for-sale debt securities, included in the "Accrued Interest Receivable" line item on the Company's Consolidated Balance Sheets, amounted to $4.8 million and $4.0 million at March 31, 2023 and December 31, 2022, respectively.

10

Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

The following tables summarize the duration of unrealized losses for debt securities at March 31, 2023 and December 31, 2022:

	March 31, 2023
	Less than 12 months				12 months or longer				Total
(Dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		# of Holdings
U.S. treasury securities	$	—	$	—	$	43,910	$	2,045	$	43,910	$	2,045	6
Federal agency CMO	46,380		844		335,270		53,952		381,650		54,796		98
Federal agency MBS	—		—		19,217		2,776		19,217		2,776		11
Taxable municipal securities	20,486		729		226,761		36,444		247,247		37,173		272
Tax-exempt municipal securities	31,239		155		9,801		330		41,040		485		80
Corporate bonds	4,857		82		670		27		5,527		109		25
Subordinated corporate bonds	1,886		66		8,935		1,065		10,821		1,131		6
Total	$	104,848	$	1,876	$	644,564	$	96,639	$	749,412	$	98,515	498

	December 31, 2022
	Less than 12 months				12 months or longer				Total
(Dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		# of Holdings
Federal agency obligations	$	4,977	$	37	$	—	$	—	$	4,977	$	37	1
U.S. treasury securities	2,878		109		40,374		2,582		43,252		2,691		6
Federal agency CMO	164,391		13,004		233,051		54,794		397,442		67,798		102
Federal agency MBS	9,923		797		9,165		2,381		19,088		3,178		11
Taxable municipal securities	93,345		10,411		144,903		37,776		238,248		48,187		273
Tax-exempt municipal securities	66,277		870		—		—		66,277		870		112
Corporate bonds	6,294		186		—		—		6,294		186		31
Subordinated corporate bonds	6,206		743		4,440		560		10,646		1,303		6
Total	$	354,291	$	26,157	$	431,933	$	98,093	$	786,224	$	124,250	542

The contractual maturity distribution at March 31, 2023 of debt securities was as follows:    

(Dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	43,577	$	42,648
Due after one, but within five years	137,025		133,624
Due after five, but within ten years	304,972		267,490
Due after ten years	437,911		381,758
Total debt securities	$	923,485	$	825,520

Scheduled contractual maturities shown above may not reflect the actual maturities of the investments. The actual MBS/CMO cash flows likely will be faster than presented above due to prepayments and amortization. Similarly, included in the table above are callable securities, comprised of municipal securities and corporate bonds, with a fair value of $162.1 million, which can be redeemed by the issuers prior to the maturity presented above. Management considers these factors when evaluating the interest-rate risk in the Company's asset-liability management program.

From time to time, the Company may pledge debt securities as collateral for deposit account balances of municipal customers, and for borrowing capacity with the FHLB and the Federal Reserve Bank of Boston ("FRB"). The fair value of debt securities pledged as collateral for these purposes was $814.7 million and $804.2 million at March 31, 2023 and December 31, 2022, respectively.

11

Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Sales of debt securities for the three months ended March 31, 2023 and March 31, 2022 are summarized as follows:     

	Three months ended March 31,
(Dollars in thousands)	2023		2022
Amortized cost of debt securities sold (1)	$	—	$	31,653
Gross realized gains on sales	—		1,062
Gross realized losses on sales	—		—
Total proceeds from sales of debt securities	$	—	$	32,715

_________________________________________

(1)Amortized cost of investments sold is determined on a specific identification basis and includes pending trades based on trade date, if applicable.

Equity Securities

The Company held equity securities with a fair value of $5.4 million at March 31, 2023 and $4.3 million at December 31, 2022. At March 31, 2023, the equity portfolio consisted of investments in broad-based equity index funds and common stock of entities in the financial services industry. The equity portfolio also included mutual funds held in conjunction with the Company's supplemental executive retirement and deferred compensation plan.

Gains and losses on equity securities for the three months ended March 31, 2023 and March 31, 2022 are summarized as follows:

	Three months ended March 31,
(Dollars in thousands)	2023		2022
Net losses recognized during the period on equity securities	$	(16)	$	(67)
Less: Net gains recognized on equity securities sold during the period	—		—
Unrealized losses recognized during the reporting period on equity securities still held at the end of the period	$	(16)	$	(67)

(3)Loans

Loan Portfolio Classifications

Major classifications of loans and their amortized cost as of the dates indicated were as follows:

(Dollars in thousands)	March 31, 2023		December 31, 2022
Commercial real estate	$	1,929,544	$	1,921,410
Commercial and industrial	423,864		414,490
Commercial construction	456,735		424,049
Total commercial loans	2,810,143		2,759,949
Residential mortgages	335,834		332,632
Home equity loans and lines	75,809		79,807
Consumer	8,370		8,130
Total retail loans	420,013		420,569
Total loans	3,230,156		3,180,518
ACL for loans	(55,002)		(52,640)
Net loans	$	3,175,154	$	3,127,878

Net deferred loan origination fees, included in the amortized costs of loans reflected in the table above, amounted to $5.1 million at March 31, 2023 and $5.2 million at December 31, 2022. Accrued interest receivable on loans amounted to $13.7 million and $13.1 million at March 31, 2023 and December 31, 2022, respectively, and was included in the "Accrued interest receivable" line item on the Company's Consolidated Balance Sheets.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Commercial loans originated by other banks in which the Company is a participating institution are carried at the pro-rata share of ownership and amounted to $101.7 million at March 31, 2023 and $94.8 million at December 31, 2022. See also "Loans serviced for others" below for information related to commercial loans participated out to various other institutions.

Loans serviced for others

At March 31, 2023 and December 31, 2022, the Company was servicing residential mortgage loans owned by investors amounting to $8.7 million and $8.9 million, respectively. Additionally, the Company was servicing commercial loans originated by the Company and participated out to various other institutions amounting to $58.3 million and $59.1 million at March 31, 2023 and December 31, 2022, respectively.

Loans serving as collateral

Loans designated as qualified collateral and pledged to the FHLB for borrowing capacity as of the dates indicated are summarized below:

(Dollars in thousands)	March 31, 2023		December 31, 2022
Commercial real estate	$	393,513	$	113,830
Residential mortgages	314,595		309,023
Home equity	33,971		39,724
Total loans pledged to FHLB	$	742,079	$	462,577

(4)ACL for Loans

There have been no material changes to the Company's ACL for loans methodology, underwriting practices, or credit risk management system used to estimate credit loss exposure since December 31, 2022. See Note 4, "ACL for Loans," to the Company's audited consolidated financial statements contained in the 2022 Annual Report on Form 10-K. 

Risk ratings and adversely classified loans

The Company's loan risk rating system classifies loans depending on risk of loss characteristics. Adversely classified ratings for loans determined to be of weaker credit range from "special mention," for loans that may need additional monitoring, to the more severe adverse classifications of "substandard," "doubtful," and "loss" based on criteria established under banking regulations.

13

Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

The following tables present the amortized cost basis of the Company's loan portfolio risk ratings within portfolio classifications, by origination date, or revolving status as of the dates indicated:

	Balance at March 31, 2023
	Term Loans by Origination Year
(Dollars in thousands)	2023		2022		2021		2020		2019		Prior		Revolving Loans		Revolving Loans Converted to Term		Total
Commercial real estate
Pass	$	32,192	$	389,368	$	375,042	$	200,608	$	220,511	$	677,333	$	1,315	$	—	$	1,896,369
Special mention	—		—		—		—		503		19,068		—		—		19,571
Substandard	—		—		280		—		1,014		12,310		—		—		13,604
Total commercial real estate	32,192		389,368		375,322		200,608		222,028		708,711		1,315		—		1,929,544
Current period charge-offs	—		—		—		—		—		—		—		—		—
Commercial and industrial
Pass	18,135		62,802		53,038		31,245		27,351		53,141		170,851		976		417,539
Special mention	—		—		—		—		—		282		2,192		925		3,399
Substandard	—		—		19		—		7		602		2,298		—		2,926
Total commercial and industrial	18,135		62,802		53,057		31,245		27,358		54,025		175,341		1,901		423,864
Current period charge-offs	5		6		—		—		—		72		—		—		83
Commercial construction
Pass	22,313		162,026		182,219		33,775		23,818		7,533		21,053		—		452,737
Special mention	—		—		—		—		3,998		—		—		—		3,998
Total commercial construction	22,313		162,026		182,219		33,775		27,816		7,533		21,053		—		456,735
Current period charge-offs	—		—		—		—		—		—		—		—		—
Residential mortgages
Pass	6,516		113,213		72,701		48,817		19,705		72,358		—		—		333,310
Special mention	—		—		—		—		—		113		—		—		113
Substandard	—		—		—		—		1,055		1,356		—		—		2,411
Total residential mortgages	6,516		113,213		72,701		48,817		20,760		73,827		—		—		335,834
Current period charge-offs	—		—		—		—		—		—		—		—		—
Home equity
Pass	—		421		588		453		338		2,152		71,443		46		75,441
Substandard	—		—		273		—		—		95		—		—		368
Total home equity	—		421		861		453		338		2,247		71,443		46		75,809
Current period charge-offs	—		—		—		—		—		—		—		—		—
Consumer
Pass	652		3,257		1,705		977		933		846		—		—		8,370
Total consumer	652		3,257		1,705		977		933		846		—		—		8,370
Current period charge-offs	1		5		—		—		—		—		—		—		6
Total loans	$	79,808	$	731,087	$	685,865	$	315,875	$	299,233	$	847,189	$	269,152	$	1,947	$	3,230,156
Total current period charge-offs	$	6	$	11	$	—	$	—	$	—	$	72	$	—	$	—	$	89

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

	Balance at December 31, 2022
	Term Loans by Origination Year
(Dollars in thousands)	2021		2020		2019		2018		2017		Prior		Revolving Loans		Revolving Loans Converted to Term		Total
Commercial real estate
Pass	$	391,515	$	381,771	$	204,125	$	218,664	$	114,175	$	577,354	$	1,347	$	200	$	1,889,151
Special mention	—		—		—		507		2,041		16,248		—		—		18,796
Substandard	—		289		—		1,160		1,404		10,610		—		—		13,463
Total commercial real estate	391,515		382,060		204,125		220,331		117,620		604,212		1,347		200		1,921,410
Commercial and industrial
Pass	59,824		53,059		33,027		29,293		13,364		43,724		171,670		3,235		407,196
Special mention	—		—		—		11		66		278		3,132		—		3,487
Substandard	—		19		—		8		138		325		2,964		353		3,807
Total commercial and industrial	59,824		53,078		33,027		29,312		13,568		44,327		177,766		3,588		414,490
Commercial construction
Pass	151,107		169,549		35,651		31,189		7,729		3,379		19,778		1,473		419,855
Special mention	—		—		—		3,900		—		—		—		—		3,900
Substandard	—		294		—		—		—		—		—		—		294
Total commercial construction	151,107		169,843		35,651		35,089		7,729		3,379		19,778		1,473		424,049
Residential mortgages
Pass	112,804		73,955		49,549		20,140		18,799		54,620		—		—		329,867
Special mention	—		—		—		—		—		325		—		—		325
Substandard	—		—		—		1,060		—		1,380		—		—		2,440
Total residential mortgages	112,804		73,955		49,549		21,200		18,799		56,325		—		—		332,632
Home equity
Pass	328		596		456		345		—		1,220		75,324		1,054		79,323
Substandard	—		273		—		—		—		211		—		—		484
Total home equity	328		869		456		345		—		1,431		75,324		1,054		79,807
Consumer
Pass	3,144		1,852		1,063		1,045		606		420		—		—		8,130
Total consumer	3,144		1,852		1,063		1,045		606		420		—		—		8,130
Total loans	$	718,722	$	681,657	$	323,871	$	307,322	$	158,322	$	710,094	$	274,215	$	6,315	$	3,180,518

The total amortized cost basis of adversely classified loans amounted to $46.4 million, or 1.44% of total loans, at March 31, 2023, and $47.0 million, or 1.48% of total loans, at December 31, 2022.

15

Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Past due and non-accrual loans

The following tables present an age analysis of past due loans by portfolio classification as of the dates indicated:

	Balance at March 31, 2023
(Dollars in thousands)	30-59 Days Past Due		60-89 Days Past Due		Past Due 90 Days or More		Total Past Due Loans(1)		Current  Loans(1)		Total Loans
Commercial real estate	$	2,589	$	384	$	2,091	$	5,064	$	1,924,480	$	1,929,544
Commercial and industrial	206		601		78		885		422,979		423,864
Commercial construction	—		—		—		—		456,735		456,735
Residential mortgages	431		1,055		—		1,486		334,348		335,834
Home equity	119		—		73		192		75,617		75,809
Consumer	14		45		—		59		8,311		8,370
Total loans	$	3,359	$	2,085	$	2,242	$	7,686	$	3,222,470	$	3,230,156

	Balance at December 31, 2022
(Dollars in thousands)	30-59 Days Past Due		60-89 Days Past Due		Past Due 90 Days or More		Total Past Due Loans(1)		Current  Loans(1)		Total Loans
Commercial real estate	$	2,818	$	1,268	$	1,631	$	5,717	$	1,915,693	$	1,921,410
Commercial and industrial	786		39		217		1,042		413,448		414,490
Commercial construction	412		—		294		706		423,343		424,049
Residential mortgages	1,119		55		149		1,323		331,309		332,632
Home equity	163		—		73		236		79,571		79,807
Consumer	21		—		—		21		8,109		8,130
Total loans	$	5,319	$	1,362	$	2,364	$	9,045	$	3,171,473	$	3,180,518

_______________________________________

(1)The loan balances in the tables above include loans designated as non-accrual according to their payment due status.

At March 31, 2023 and December 31, 2022, all loans past due 90 days or more were carried as non-accrual, however, not all non-accrual loans were 90 days or more past due in their payments. Loans that were less than 90 days past due where reasonable doubt existed as to the full and timely collection of interest or principal have also been designated as non-accrual, despite their payment due status.

The following tables present the amortized cost of non-accrual loans by portfolio classification as of the dates indicated:

	Balance at March 31, 2023
(Dollars in thousands)	Total Non-accrual Loans		Non-accrual Loans without a Specific Reserve		Non-accrual Loans with a Specific Reserve		Related Specific Reserve
Commercial real estate	$	4,926	$	3,912	$	1,014	$	274
Commercial and industrial	673		325		348		309
Commercial construction	—		—		—		—
Residential mortgages	1,565		1,565		—		—
Home equity	368		95		273		85
Consumer	—		—		—		—
Total loans	$	7,532	$	5,897	$	1,635	$	668

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

	Balance at December 31, 2022
(Dollars in thousands)	Total Non-accrual Loans		Non-accrual Loans without a Specific Reserve		Non-accrual Loans with a Specific Reserve		Related Specific Reserve
Commercial real estate	$	3,355	$	2,317	$	1,038	$	298
Commercial and industrial	730		348		382		382
Commercial construction	294		294		—		—
Residential mortgages	1,532		1,532		—		—
Home equity	211		211		—		—
Consumer	—		—		—		—
Total loans	$	6,122	$	4,702	$	1,420	$	680

The ratio of non-accrual loans to total loans amounted to 0.23% and 0.19% at March 31, 2023 and December 31, 2022, respectively.

At March 31, 2023 and December 31, 2022, additional funding commitments for non-accrual loans were not material.

Collateral dependent loans

The total recorded investment in collateral dependent loans amounted to $22.8 million at March 31, 2023 compared to $25.2 million at December 31, 2022. Total accruing collateral dependent loans amounted to $15.6 million while non-accrual collateral dependent loans amounted to $7.2 million as of March 31, 2023. As of December 31, 2022, total accruing collateral dependent loans amounted to $19.5 million, while non-accrual collateral dependent loans amounted to $5.7 million.

The following tables present the recorded investment in collateral dependent loans and the related specific allowance by portfolio allocation as of the dates indicated:

	Balance at March 31, 2023
(Dollars in thousands)	Unpaid Contractual Principal Balance		Total Recorded Investment in Collateral Dependent Loans		Recorded Investment without a Specific Reserve		Recorded Investment with a Specific Reserve		Related Specific Reserve
Commercial real estate	$	22,783	$	20,163	$	19,149	$	1,014	$	274
Commercial and industrial	2,867		562		524		38		12
Commercial construction	—		—		—		—		—
Residential mortgages	1,873		1,678		1,678		—		—
Home equity	435		368		95		273		85
Consumer	—		—		—		—		—
Total	$	27,958	$	22,771	$	21,446	$	1,325	$	371

	Balance at December 31, 2022
(Dollars in thousands)	Unpaid Contractual Principal Balance		Total Recorded Investment in Collateral Dependent Loans		Recorded Investment without a Specific Reserve		Recorded Investment with a Specific Reserve		Related Specific Reserve
Commercial real estate	$	24,530	$	21,916	$	20,878	$	1,038	$	298
Commercial and industrial	3,210		863		863		—		—
Commercial construction	294		294		294		—		—
Residential mortgages	2,096		1,914		1,914		—		—
Home equity	386		211		211		—		—
Consumer	—		—		—		—		—
Total	$	30,516	$	25,198	$	24,160	$	1,038	$	298

17

Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

At March 31, 2023 and December 31, 2022, additional funding commitments for collateral dependent loans were not material.

Loan modifications to borrowers experiencing financial difficulty

Effective on January 1, 2023, the Company adopted ASU 2022-02, "Financial Instruments—Credit Losses (Topic 326), Troubled Debt Restructurings ("TDR") and Vintage Disclosures," which eliminated the accounting guidance for TDRs and enhanced the disclosure requirements for loan restructurings made with borrowers experiencing financial difficulty. The adoption did not have a significant impact on the financial statements.

The Company continues to work with loan customers and may enter into loan modifications to the extent deemed to be necessary or appropriate while attempting to achieve the best mutual outcome given the individual financial circumstances and future prospects of the borrower. An assessment of whether a borrower is experiencing financial difficulty is made on the date of the modification. Modifications made to borrowers experiencing financial difficulty may be concessions in the form of principal forgiveness, interest rate reductions, payment deferrals of principal, interest or both, or term extensions, or some combination thereof. When a debt has been previously modified, the Company considers the cumulative effect of modifications made within the prior twelve-month period before the current modification, when determining whether a delay in payment resulting from the current modification is insignificant, or not.

The following table presents the amortized cost basis of loan modifications made to borrowers experiencing financial difficulty by type of concession granted during the period indicated:

	Three months ended
	March 31, 2023
(Dollars in thousands)		Payment Deferrals		% of Loan Class Total
Commercial real estate		$	281	0.01	%
Commercial and industrial		38		0.01	%
Total		$	319	0.01	%

The following table presents the financial effect of loan modifications made to borrowers experiencing financial difficulty during the period indicated:

	Three months ended
	March 31, 2023
		Weighted-Average Payment Deferrals
Commercial real estate		0.5 years
Commercial and industrial		0.5 years

The Company closely monitors the performance of the loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table presents the performance status of loans that had been modified within the preceding twelve months for borrowers experiencing financial difficulty, at the period indicated.

	Balance at March 31, 2023
(Dollars in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		Past Due 90 Days or More		Total Past Due
Commercial real estate	$	406	$	—	$	—	$	1,014	$	1,014
Commercial and industrial	237		—		—		—		—
Commercial construction	—		—		—		—		—
Residential mortgages	—		—		—		—		—
Home equity	—		—		—		—		—
Consumer	—		—		—		—		—
Total	$	643	$	—	$	—	$	1,014	$	1,014

18

Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

During the three months ended March 31, 2023, there were no subsequent defaults on loans that had been modified within the preceding twelve months for borrowers experiencing financial difficulty, and at March 31, 2023, additional funding commitments to borrowers experiencing financial difficulty who were party to a loan modification were immaterial.

Prior-period troubled debt restructuring disclosures

Prior to adopting the new accounting standard on loan modifications, the Company accounted for modifications of loans to borrowers experiencing financial difficulty as TDRs, when the modification resulted in a concession and specific reserves were charged to the ACL if necessary for the amount of estimated credit loss. The following discussion reflects loans that were considered TDRs prior to January 1, 2023. For further information on the Company's TDR accounting policies, see Note 1, "Summary of Significant Accounting Policies," to the Company's audited consolidated financial statements contained in the 2022 Annual Report on Form 10-K. 

At March 31, 2022, additional funding commitments for TDR loans were immaterial.

The following table presents the number and balance of loans modified as TDRs, by portfolio classification, during the period indicated:

	Three months ended
	March 31, 2022
(Dollars in thousands)	Number of Restructurings	Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment
Commercial real estate	2	$	1,718	$	1,699
Total	2	$	1,718	$	1,699

There were no subsequent charge-offs associated with the TDRs noted in the table above during the three months ended March 31, 2022.

Payment defaults by portfolio classification, during the three months indicated, on loans modified as TDRs within the preceding twelve months are detailed below:

	Three months ended
	March 31, 2022
(Dollars in thousands)	Number of TDRs that Defaulted	Post-modification Outstanding Recorded Investment
Commercial and industrial	1	$	48
Total	1	$	48

The following table sets forth the post modification balances of TDRs listed by type of modification for TDRs that occurred during the three-month period indicated:

	Three months ended
	March 31, 2022
(Dollars in thousands)	Number of Restructurings	Amount
Temporary payment reduction and payment re-amortization of remaining principal over extended term	1	$	1,404
Temporary interest only payment plan	1	295
Total	2	$	1,699
Amount of ACL for loans associated with TDRs listed above		$	—

19

Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

ACL for loans and provision for credit loss activity

The following table presents changes in the provision for credit losses on loans and unfunded commitments during the three-month periods indicated:

	Three months ended
(Dollars in thousands)	March 31, 2023		March 31, 2022
Provision for credit losses on loans	$	2,318	$	825
Provision for unfunded commitments	418		(295)
Total provision for credit losses	$	2,736	$	530

ACL for loans

The ACL for loans amounted to $55.0 million and $52.6 million at March 31, 2023 and December 31, 2022, respectively. The ACL for loans to total loans ratio was 1.70% and 1.66% at March 31, 2023 and December 31, 2022, respectively.

The following tables present changes in the ACL for loans by portfolio classification, during the three months indicated:

(Dollars in thousands)	Commercial Real Estate		Commercial and Industrial		Commercial Construction		Residential Mortgage		Home Equity		Consumer		Total
Beginning Balance at December 31, 2022	$	36,564	$	8,896	$	3,961	$	2,255	$	633	$	331	$	52,640
Provision for credit losses on loans	1,161		438		492		123		76		28		2,318
Recoveries	—		127		—		—		3		3		133
Less: Charge-offs	—		83		—		—		—		6		89
Ending Balance at March 31, 2023	$	37,725	$	9,378	$	4,453	$	2,378	$	712	$	356	$	55,002

(Dollars in thousands)	Commercial Real Estate		Commercial and Industrial		Commercial Construction		Residential Mortgage		Home Equity		Consumer		Total
Beginning Balance at December 31, 2021	$	31,847	$	9,574	$	4,090	$	1,405	$	465	$	323	$	47,704
Provision for credit losses on loans	2,089		(543)		(572)		(83)		(15)		(51)		825
Recoveries	—		24		—		—		4		5		33
Less: Charge-offs	—		105		—		—		—		33		138
Ending Balance at March 31, 2022	$	33,936	$	8,950	$	3,518	$	1,322	$	454	$	244	$	48,424

Reserve for unfunded commitments

The Company's reserve for unfunded commitments amounted to $4.7 million at March 31, 2023 and $4.3 million at December 31, 2022. Management believes that the Company's ACL for loans and reserve for unfunded commitments were adequate as of March 31, 2023.

Other real estate owned ("OREO")

The Company carried no OREO at March 31, 2023 and December 31, 2022.

At March 31, 2023 and December 31, 2022, the Company had no consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process according to local requirements of the applicable jurisdictions.

(5)Leases

As of March 31, 2023, the Company had 16 facilities contracted under various non-cancelable operating leases, most of which provide options to the Company to extend the lease periods and include periodic rent adjustments.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Lease expense for the three months ended March 31, 2023 and March 31, 2022 were $404 thousand and $416 thousand, respectively. Variable lease costs and short-term lease expenses included in lease expense during these periods were immaterial.

The weighted average remaining lease term for operating leases at March 31, 2023 and March 31, 2022 was 29.2 years and 30.1 years, respectively. The weighted average discount rate was 3.51% at March 31, 2023 and 3.45% at March 31, 2022.

At March 31, 2023, the remaining undiscounted cash flows by year of these lease liabilities were as follows:

(Dollars in thousands)	Operating Leases
2023 (nine remaining months)	$	1,067
2024	1,435
2025	1,441
2026	1,452
2027	1,454
Thereafter	32,346
Total lease payments	39,195
Less: Imputed interest	14,910
Total lease liability	$	24,285

(6)Deposits

Deposits are summarized as follows as of the periods indicated:

(Dollars in thousands)	March 31, 2023		December 31, 2022
Non-interest checking	$	1,247,253	$	1,361,588
Interest-bearing checking	641,194		678,715
Savings	297,790		326,666
Money market	1,454,858		1,381,645
CDs $250,000 or less	222,116		187,758
CDs greater than $250,000	152,945		99,434
Deposits	$	4,016,156	$	4,035,806

All of the Company's deposits outstanding at both March 31, 2023 and December 31, 2022 were customer deposits, and the Company had no brokered deposits at either March 31, 2023 or December 31, 2022. Customer deposits include reciprocal balances from checking, money market deposits and CDs received from participating banks in nationwide deposit networks due to our customers electing to participate in Company offered programs which allow for enhanced Federal Deposit Insurance Corporation ("FDIC") deposit insurance. Under this enhanced deposit insurance program, the equivalent of the customers' original deposited funds comes back to the Company and are carried within the appropriate category under deposits. The Company's balances in these reciprocal products were $721.1 million and $589.7 million at March 31, 2023 and December 31, 2022, respectively.

(7)Borrowed Funds and Subordinated Debt

The Company's borrowed funds amounted to $3.2 million at both March 31, 2023 and December 31, 2022 and were comprised of FHLB advances related to specific lending projects under the FHLB's community development and affordable housing programs as well as a small portion of borrowed funds from the New Hampshire Business Finance Authority borrowing under a New Hampshire community development program.

Borrowed funds at March 31, 2023 and December 31, 2022 are summarized, as follows:

	March 31, 2023				December 31, 2022
(Dollars in thousands)	Balance		Rate		Balance		Rate
Over 5 years	$	3,199	1.55	%	$	3,216	1.55	%
Total borrowed funds	$	3,199	1.55	%	$	3,216	1.55	%

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

The Company also had outstanding subordinated debt (net of deferred issuance costs) of $59.3 million at March 31, 2023 and $59.2 million at December 31, 2022. The outstanding subordinated notes are due on July 15, 2030 and callable at the Company's option on or after July 15, 2025.

(8)    Derivatives and Hedging Activities

For further information on the Company's derivatives and hedging activities, see Note 9, "Derivatives and Hedging," to the Company's audited consolidated financial statements contained in the 2022 Annual Report on Form 10-K. 

The tables below present a summary of the Company's derivative financial instruments, notional amounts and fair values at the periods presented:

	March 31, 2023
(Dollars in thousands)	Asset Notional Amount		Asset Derivatives(1)		Liability Notional Amount		Liability Derivatives(1)
Derivatives not subject to hedge accounting
Interest-rate contracts - pay floating, receive fixed	$	—	$	—	$	7,714	$	624
Interest-rate contracts - pay fixed, receive floating	7,714		624		—		—
Risk participation agreements sold	—		—		46,907		98
Total back-to-back interest-rate swaps	$	7,714	$	624	$	54,621	$	722

	December 31, 2022
(Dollars in thousands)	Asset Notional Amount		Asset Derivatives(1)		Liability Notional Amount		Liability Derivatives(1)
Derivatives not subject to hedge accounting
Interest-rate contracts - pay floating, receive fixed	$	—	$	—	$	7,777	$	782
Interest-rate contracts - pay fixed, receive floating	7,777		782		—		—
Risk participation agreements sold	—		—		24,660		73
Total back-to-back interest-rate swaps	$	7,777	$	782	$	32,437	$	855

__________________________________________

(1)     Accrued interest balances related to the Company's interest-rate swaps are not included in the fair values above and are immaterial.

The Company had no derivative fair value or cash flow hedges at either March 31, 2023 or December 31, 2022.

Interest-rate Contracts

Each back-to-back interest-rate swap consists of two interest-rate swaps (a customer swap and offsetting counterparty swap) and amounted to a total number of four interest-rate swaps outstanding at March 31, 2023 and December 31, 2022. As a result of this offsetting relationship, there were no net gains or losses recognized in income on back-to-back swaps during the three months ended March 31, 2023 or March 31, 2022.

Interest-rate swaps with counterparties are subject to master netting agreements, while interest-rate swaps with customers are not. At March 31, 2023 and December 31, 2022, all back-to-back swaps with the counterparty were in asset positions, therefore there was no netting reflected in the Company's Consolidated Balance Sheets as of the respective dates.

Risk Participation Agreements

The Company enters into risk participation agreements ("RPA") for which the Company has assumed credit risk for customers' performance under interest-rate swap agreements related to the customers' commercial loan and receives fee income commensurate with the risk assumed. The RPA and the customers' loan are secured by the same collateral.

Credit Risk

The Company had one active interest-rate swap institutional counterparty that was rated A and A2 by Standard & Poor's and Moody's, respectively, at March 31, 2023. When the Company has credit risk exposure, collateral is posted by the counterparty. Collateral posted by counterparties is restricted and not considered an asset of the Company, therefore, it is not carried on the

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Company's Consolidated Balance Sheets. If the Company posts collateral, the restricted cash is carried on the Company's Consolidated Balance Sheets. At March 31, 2023, the Company had no credit risk exposure relating to interest-rate swaps with counterparties and posted no cash collateral. At December 31, 2022, the Company had credit risk exposure relating to interest-rate swaps with counterparties of $708 thousand and cash collateral posted by counterparties amounted to $20 thousand.

Credit-risk-related Contingent Features

There have been no material changes to the credit-risk-related contingent provisions contained within the Company's interest-rate swaps with counterparties since December 31, 2022. As of March 31, 2023, the fair value of derivatives related to these agreements was at a net liability position of $10 thousand, which excludes any adjustment for nonperformance risk. The Company has minimum collateral posting thresholds with certain of its derivative counterparties and as of March 31, 2023, has not posted collateral related to these agreements.

Other Derivative Related Activity

At both March 31, 2023 and December 31, 2022, the Company had one participation loan for which the originating bank utilizes a back-to-back interest-rate swap structure and the Company has assumed a contingent liability commensurate with its participation percentage in the loan. At March 31, 2023, management considers the risk of material swap loss exposure related to this participation loan to be unlikely based on the borrower's financial and collateral strength.

Interest-rate lock commitments related to the origination of mortgage loans that will be sold are considered derivative instruments. The commitments to sell loans are also considered derivative instruments. At March 31, 2023 and December 31, 2022, the estimated fair value of the Company's interest-rate lock commitments and commitments to sell these mortgage loans were deemed immaterial.

(9) Regulatory Capital Requirements

As of March 31, 2023 and December 31, 2022, the Company met the definition of "well-capitalized" under the applicable regulations of the Board of Governors of the Federal Reserve System and the Bank qualified as "well-capitalized" under the prompt corrective action regulations of the FDIC and the Basel III capital guidelines.

The Company's and the Bank's actual capital amounts and ratios are presented as of March 31, 2023 and December 31, 2022 in the tables below:

	Actual				Minimum Capital for Capital Adequacy Purposes(1)				Minimum Capital to be Well Capitalized(2)
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of March 31, 2023
The Company
Total Capital to risk-weighted assets ("RWA")	$	485,903	13.55	%	$	286,953	8.00	%	N/A		N/A
Tier 1 Capital to RWA	381,621		10.64	%	215,215		6.00	%	N/A		N/A
Tier 1 Capital to average assets ("AA") or Leverage Ratio	381,621		8.47	%	180,292		4.00	%	N/A		N/A
Common Equity Tier 1 Capital to RWA	381,621		10.64	%	161,411		4.50	%	N/A		N/A
The Bank
Total Capital to RWA	$	486,014	13.55	%	$	286,953	8.00	%	$	358,692	10.00	%
Tier 1 Capital to RWA	440,993		12.29	%	215,215		6.00	%	286,953		8.00	%
Tier 1 Capital to AA, Leverage Ratio	440,993		9.78	%	180,292		4.00	%	225,365		5.00	%
Common Equity Tier 1 Capital to RWA	440,993		12.29	%	161,411		4.50	%	233,150		6.50	%

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

	Actual				Minimum Capital for Capital Adequacy Purposes(1)				Minimum Capital to be Well Capitalized(2)
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2022
The Company
Total Capital to RWA	$	476,307	13.49	%	$	282,567	8.00	%	N/A		N/A
Tier 1 Capital to RWA	372,817		10.56	%	211,926		6.00	%	N/A		N/A
Tier 1 Capital to AA, Leverage Ratio	372,817		8.10	%	184,194		4.00	%	N/A		N/A
Common Equity Tier 1 Capital to RWA	372,817		10.56	%	158,944		4.50	%	N/A		N/A
The Bank
Total Capital to RWA	$	475,668	13.47	%	$	282,567	8.00	%	$	353,209	10.00	%
Tier 1 Capital to RWA	431,359		12.21	%	211,926		6.00	%	282,567		8.00	%
Tier 1 Capital to AA, Leverage Ratio	431,359		9.37	%	184,194		4.00	%	230,243		5.00	%
Common Equity Tier 1 Capital to RWA	431,359		12.21	%	158,944		4.50	%	229,586		6.50	%

__________________________________________

(1)Before application of the capital conservation buffer of 2.50% as of March 31, 2023, and December 31, 2022. See discussion      below.

(2)For the Bank to qualify as "well-capitalized," it must maintain at least the minimum ratios listed under the regulatory prompt corrective action framework. This framework does not apply to the Company.

The Company is subject to the Basel III capital ratio requirements which include a "capital conservation buffer" of 2.50% above the regulatory minimum risk-based capital adequacy requirements shown above. If a banking organization dips into its capital conservation buffer it may be restricted in its activities, including its ability to pay dividends and discretionary bonus payments to its executive officers. Both the Company's and the Bank's actual ratios, as outlined in the table above, exceeded the Basel III risk-based capital requirement with the capital conservation buffer as of March 31, 2023. At March 31, 2023, the capital conservation buffer amounted to $89.7 million for both the Company and the Bank.

(10)Comprehensive Income (Loss)

The following table presents a reconciliation of the changes in the components of other comprehensive income (loss) for the dates indicated, including the amount of income tax (expense) benefit allocated to each component of other comprehensive income (loss):

	Three months ended March 31, 2023						Three months ended March 31, 2022
(Dollars in thousands)	Pre-Tax		Tax Benefit (Expense)		After Tax Amount		Pre-Tax		Tax Benefit (Expense)		After Tax Amount
Change in fair value of debt securities	$	26,160	$	(5,912)	$	20,248	$	(56,974)	$	12,840	$	(44,134)
Less: net security gains reclassified into non-interest income	—		—		—		1,062		(234)		828
Net change in fair value of debt securities	26,160		(5,912)		20,248		(58,036)		13,074		(44,962)
Total other comprehensive income (loss), net	$	26,160	$	(5,912)	$	20,248	$	(58,036)	$	13,074	$	(44,962)

Information on the Company's accumulated other comprehensive income (loss), net of tax, is comprised of the following components as of the periods indicated:

	Three months ended March 31, 2023				Three months ended March 31, 2022
(Dollars in thousands)	Unrealized Gains (Losses) on Debt Securities		Total		Unrealized Gains (Losses) on Debt Securities		Total
Accumulated other comprehensive (loss) income - beginning balance	$	(96,207)	$	(96,207)	$	4,662	$	4,662
Total other comprehensive loss, net	20,248		20,248		(44,962)		(44,962)
Accumulated other comprehensive loss - ending balance	$	(75,959)	$	(75,959)	$	(40,300)	$	(40,300)

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

(11)Stock-Based Compensation

There have been no material changes to The Enterprise Bancorp, Inc. 2016 Stock Incentive Plan (the "2016 Plan") since December 31, 2022. As of March 31, 2023, 376,429 shares of Company common stock remained available for future grants under the 2016 Plan.

Total stock-based compensation expense was $522 thousand for the three months ended March 31, 2023, compared to $478 thousand for the three months ended March 31, 2022.

Stock Option Awards

The Company issued no stock options during the three months ended March 31, 2023. The table below provides a summary of the options granted, including the weighted average fair value, the fair value as a percentage of the market value of the stock at the date of grant and the average assumptions used in the model for the prior period:

	Three months ended
	March 31, 2022
Options granted	16,797
Term in years	10
Weighted average assumptions used in the fair value model:
Expected volatility	44		%
Expected dividend yield	3.05		%
Expected life in years	6.5
Risk-free interest-rate	2.19		%
Weighted average market price on date of grants	$	38.58
Per share weighted average fair value	$	14.40
Fair value as a percentage of market value at grant date	37		%

Options granted during the first three months of 2022 generally vest 50% in year two and 50% in year four, on or about the anniversary date of the awards.

The Company utilizes the Black-Scholes option valuation model to determine the per share grant date fair value of stock option grants.

The Company recognized stock-based compensation expense related to stock option awards of $50 thousand for the three months ended March 31, 2023, compared to $48 thousand for the three months ended March 31, 2022.

Restricted Stock Awards

Restricted stock awards are granted at the market price of the Company's common stock on the date of the grant. Employee restricted stock awards generally vest over four years in equal portions beginning on or about the first anniversary date of the restricted stock award or are performance-based restricted stock awards that vest upon the Company achieving certain predefined performance objectives. Non-employee director restricted stock awards generally vest over two years in equal portions beginning on or about the first anniversary date of the restricted stock award.

The table below provides a summary of restricted stock awards granted during the periods indicated:

	Three months ended March 31,
Restricted Stock Awards (number of underlying shares)	2023		2022
Two-year vesting	—		8,823
Four-year vesting	32,719		21,554
Performance-based vesting	31,270		22,254
Total restricted stock awards granted	63,989		52,631
Weighted average grant date fair value	$	32.32	$	38.58

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Stock-based compensation expense recognized in association with stock awards, mainly restricted stock awards, amounted to $407 thousand for the three months ended March 31, 2023, compared to $360 thousand for the three months ended March 31, 2022.

Stock in Lieu of Directors' Fees

Non-employee members of the Company's Board of Directors (the "Board") may opt to receive newly issued shares of the Company's common stock in lieu of cash compensation for attendance at meetings of the Board and committees of the Board. Stock-based compensation expense related to these directors' fees amounted to $65 thousand for the three months ended March 31, 2023, compared to $70 thousand for the three months ended March 31, 2022.

(12)Earnings per Share

The table below presents basic earnings per share and the increase in average shares outstanding, using the treasury stock method, for the diluted earnings per share calculation for the periods indicated:

	Three months ended March 31,
	2023	2022
Basic weighted average common shares outstanding	12,155,320	12,055,991
Dilutive shares	38,436	63,845
Diluted weighted average common shares outstanding	12,193,756	12,119,836

There were 34,164 and 34,210 stock options outstanding for the three months ended March 31, 2023 and March 31, 2022, respectively, that were determined to be anti-dilutive and therefore excluded from the calculation of dilutive shares for those periods. These stock options, which were not dilutive, may potentially dilute earnings per share in the future.

Unvested participating restricted awards amounted to 135,216 shares and 106,658 shares as of March 31, 2023 and December 31, 2022, respectively.

(13)Fair Value Measurements

The FASB defines the fair value of an asset or liability to be the price which a seller would receive in an orderly transaction between market participants (an exit price) and also establishes a fair value hierarchy segregating fair value measurements using three levels of inputs: (Level 1) quoted market prices in active markets for identical assets or liabilities; (Level 2) significant other observable inputs, including quoted prices for similar items in active markets, quoted prices for identical or similar items in markets that are not active, inputs such as interest rates and yield curves, volatilities, prepayment speeds, credit risks and default rates which provide a reasonable basis for fair value determination or inputs derived principally from observed market data; and (Level 3) significant unobservable inputs for situations in which there is little, if any, market activity for the asset or liability. Unobservable inputs must reflect reasonable assumptions that market participants would use in pricing the asset or liability, which are developed based on the best information available under the circumstances.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

The following tables summarize significant assets and liabilities carried at fair value and placement in the fair value hierarchy at the dates specified:

	March 31, 2023
			Fair Value Measurements Using:
(Dollars in thousands)	Fair Value		(Level 1)		(Level 2)		(Level 3)
Assets measured on a recurring basis:
Debt securities	$	825,520	$	—	$	825,520	$	—
Equity securities	—		—		—		—
FHLB stock	2,343		—		2,343		—
Interest-rate swaps	624		—		624		—
Assets measured on a non-recurring basis:
Individually evaluated loans (collateral dependent)	954		—		—		954
Liabilities measured on a recurring basis:
Interest-rate swaps	$	624	$	—	$	624	$	—
RPA sold	98		—		98		—

 

	December 31, 2022
			Fair Value Measurements Using:
(Dollars in thousands)	Fair Value		(Level 1)		(Level 2)		(Level 3)
Assets measured on a recurring basis:
Debt securities	$	816,102	$	—	$	816,102	$	—
Equity securities	4,269		4,269		—		—
FHLB stock	2,343		—		2,343		—
Interest-rate swaps	782		—		782		—
Assets measured on a non-recurring basis:
Individually evaluated loans (collateral dependent)	740		—		—		740
Liabilities measured on a recurring basis:
Interest-rate swaps	$	782	$	—	$	782	$	—
RPA sold	73		—		73		—

The Company utilizes third-party pricing vendors to provide valuations on its debt securities.

The Company's equity portfolio fair value is measured based on quoted market prices for the shares; therefore, these securities are categorized as Level 1 within the fair value hierarchy.

The Bank is required to purchase FHLB stock at par value in association with advances from the FHLB. The stock is issued, redeemed, repurchased and transferred by the FHLB only at their fixed par value. This stock is classified as a restricted investment and carried at FHLB par value which management believes approximates fair value; therefore, these securities are categorized as Level 2 measures. 

The fair values of derivative assets and liabilities, which are comprised of back-to-back swaps and risk participation agreements, represent a FASB Level 2 measurement and are based on settlement values adjusted for credit risks and observable market interest-rate curves. Refer also to Note 8, "Derivatives and Hedging Activities," this Form 10-Q, contained above, for additional information on the Company's interest-rate swaps.

For loans individually assessed and deemed to be collateral dependent management has estimated the value and the probable credit loss by comparing the loan's amortized cost against the expected realizable fair value of the collateral (appraised value, or internal analysis, less estimated cost to sell, adjusted as necessary for changes in relevant valuation factors subsequent to the measurement date). Certain inputs used in these assessments, and possible subsequent adjustments, are not always observable, and therefore, collateral dependent loans carried at realizable fair value are categorized as Level 3 within the fair value

27

Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

hierarchy. A specific reserve is assigned to the collateral dependent loan for the amount of management's estimated probable credit loss. The specific reserve assigned to individually evaluated loans that are collateral dependent amounted to $371 thousand at March 31, 2023, compared to $298 thousand at December 31, 2022.

The following table presents additional quantitative information about assets measured at fair value on a non-recurring basis for which the Company utilized Level 3 inputs (significant unobservable inputs for situations in which there is little, if any, market activity for the asset or liability) to determine fair value as of March 31, 2023 and December 31, 2022:

	Fair Value
(Dollars in thousands)	March 31, 2023		December 31, 2022		Valuation Technique	Unobservable Input	Unobservable Input Value or Range
Assets measured on a non-recurring basis:
Individually evaluated loans (collateral dependent)	$	954	$	740	Appraisal of collateral	Appraisal adjustments(1)	15% - 50%

__________________________________________

(1)Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses.

Estimated Fair Values of Assets and Liabilities

In addition to disclosures regarding the measurement of assets and liabilities carried at fair value on the Company's Consolidated Balance Sheets, the Company is also required to disclose fair value information about financial instruments for which it is practicable to estimate that value, whether or not recognized on the Company's Consolidated Balance Sheets. 

Financial instruments for which the fair value is disclosed but not recognized on the Company's Consolidated Balance Sheets are summarized below. The table includes the carrying value, estimated fair value and its placement in the fair value hierarchy as follows:

	March 31, 2023
					Fair Value Measurement
(Dollars in thousands)	Carrying Value		Fair Value		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial assets:
Loans held for sale	$	362	$	358	$	—	$	358	$	—
Loans, net	3,175,154		3,017,247		—		—		3,017,247
Financial liabilities:
CDs	375,061		370,316		—		370,316		—
Borrowed funds	3,199		2,191		—		2,191		—
Subordinated debt	59,261		55,671		—		55,671		—

	December 31, 2022
					Fair Value Measurement
(Dollars in thousands)	Carrying Value		Fair Value		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial assets:
Loans, net	$	3,127,878	$	2,952,778	$	—	$	—	$	2,952,778
Financial liabilities:
CDs	287,192		281,800		—		281,800		—
Borrowed funds	3,216		2,006		—		2,006		—
Subordinated debt	59,182		55,407		—		55,407		—

Excluded from the tables above are certain financial instruments with carrying values that approximated their fair value at the dates indicated, as they were short-term in nature or payable on demand. These include cash and cash equivalents, accrued interest and non-term deposit accounts. The respective carrying values of these instruments would all be classified within Level 1 in the fair value hierarchy.

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Table of Contents ENTERPRISE BANCORP, INC. Notes to the Unaudited Consolidated Interim Financial Statements

Also excluded from these tables are the fair values of commitments for unused portions of lines of credit and commitments to originate loans that were short-term, at current market rates and estimated to have no significant change in fair value.

(14)Supplemental Cash Flow Information

The supplemental cash flow information for the three months ended March 31, 2023 and March 31, 2022 is as follows:

	Three months ended March 31,
(Dollars in thousands)	2023		2022
Supplemental financial data:
Cash paid for: interest	$	6,931	$	2,222
Cash paid for: income taxes	4,455		5,060
Cash paid for: lease liability	340		331
Supplemental schedule of non-cash activity:
Net purchases of investment securities not yet settled	—		1,500

.

29

Item 2 -Management's Discussion and Analysis of Financial Condition and Results of Operations

Management's discussion and analysis should be read in conjunction with the Enterprise Bancorp, Inc. (the "Company," "Enterprise," "we," or "our") unaudited consolidated interim financial statements and notes thereto contained in this Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2023 (this "Form 10-Q"), and the audited consolidated financial statements and notes thereto contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2022 (the "2022 Annual Report on Form 10-K") as filed with the Securities and Exchange Commission (the "SEC") on March 8, 2023.

Special Note Regarding Forward-Looking Statements

This Form 10-Q contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Such forward-looking statements about the Company and its industry involve substantial risks and uncertainties. Statements other than statements of current or historical fact, including statements regarding the Company's future financial condition, results of operations, business plans, liquidity, cash flows, projected costs, and the impact of any laws or regulations applicable to the Company, are forward-looking statements. Forward-looking statements may be identified by reference to a future period or periods or by use of forward-looking terminology such as "will," "should," "could," "anticipates," "believes," "expects," "intends," "may," "plans," "pursue," "views" and similar terms or expressions. We caution you that any such forward-looking statements are not guarantees of future performance and are subject to risks, assumptions, estimates and uncertainties that are difficult to predict. Although we believe that the expectations reflected in these forward-looking statements are reasonable as of the date made, actual results may prove to be materially different from the results expressed or implied by the forward-looking statements.

There are or will be important factors that could cause our actual results to differ materially from those indicated in these forward-looking statements, including, but not limited to, the following:

•potential recession in the United States and our market areas;

•the impacts related to or resulting from recent bank failures and any continuation of the recent uncertainty in the banking industry, including the associated impact to the Company and other financial institutions of any regulatory changes or other mitigation efforts taken by government agencies in response thereto;

•increased competition for deposits and related changes in deposit customer behavior;

•failure of risk management controls and procedures;

•the adequacy of the allowance for credit losses;

•risk specific to commercial loans and borrowers;

•changes in the business cycle and downturns in the local, regional, or national economies, including changes in consumer spending and deterioration in the local real estate market, could negatively impact credit and/or asset quality and result in credit losses and increases in the Company's allowance for credit losses;

•the persistence of the current inflationary environment in the United States and our market areas, and its impact on market interest rates, the economy and credit quality;

•deterioration of capital markets, which could adversely affect the value or credit quality of the Company's assets and the availability of funding sources necessary to meet the Company's liquidity needs;

•changes in market interest rates could negatively impact the pricing of our loans and deposits and decrease our net interest income or net interest margin;

•increases in market interest rates could negatively impact bond market values and result in a lower net book value;

•our ability to successfully manage the current rising market interest-rate environment, our credit risk and the level of future non-performing assets and charge-offs;

•potential decreases or growth of assets, deposits, future non-interest expenditures and non-interest income;

•inability to maintain adequate liquidity;

•the inability to raise the necessary capital to fund our operations or to meet minimum regulatory capital levels would restrict our business and operations;

•material decreases in the amount of deposits we hold, or a failure to grow our deposit base as necessary to help fund our growth and operations;

•our ability to keep pace with technological change or difficulties when implementing new technologies;

30

•technology-related risk, including technological changes and technology service interruptions or failure could adversely impact the Company's operations and increase technology-related expenditures;

•cybersecurity risk including security breaches and identity theft could impact the Company's reputation, increase regulatory oversight, and impact the financial results of the Company;

•increasing competition from larger regional and out-of-state banking organizations as well as non-bank providers of various financial services could adversely affect the Company's competitive position within its market area and reduce demand for the Company's products and services;

•our ability to retain and increase our aggregate assets under management;

•our ability to enter new markets successfully and capitalize on growth opportunities, including the receipt of required regulatory approvals;

•damage to our reputation in the markets we serve;

•risks associated with fraudulent, negligent, or other acts by our customers, employees or vendors;

•exposure to legal claims and litigation;

•our ability to maintain an effective system of disclosure controls and procedures and internal control over financial reporting;

•inability to attract, hire and retain qualified management personnel;

•recent and future changes in laws and regulations that apply to the Company's business and operations, and any additional regulations, or repeals that may be forthcoming as a result thereof, which could cause the Company to incur additional costs and adversely affect the Company's business environment, operations and financial results;

•future regulatory compliance costs, including any increase caused by new regulations imposed by the government;

•changes in tariffs and trade barriers;

•our ability to navigate the uncertain impacts of quantitative tightening and current and future governmental monetary and fiscal policies, including the current and future policies of the Board of Governors of the Federal Reserve System (the "Federal Reserve Board");

•our ability to comply with supervisory actions by federal and state banking agencies;

•changes in the scope and cost of Federal Deposit Insurance Corporation (the "FDIC") insurance and other coverage;

•changes in accounting and/or auditing standards, policies and practices, as may be adopted or established by the regulatory agencies, FASB, or the Public Company Accounting Oversight Board could negatively impact the Company's financial results; and

•systemic risks associated with the soundness of other financial institutions.

The Company cautions readers that the forward-looking statements in this Form 10-Q reflect numerous assumptions that management believes to be reasonable, but which are inherently uncertain and beyond the Company's control. Forward-looking statements involve a number of risks and uncertainties that could cause the Company's actual results to differ materially from those expressed in, or implied by, the forward-looking statement. Accordingly, we caution you that any such forward-looking statements are not guarantees of future performance and readers should not place undue reliance on such forward-looking information and statements. Any forward-looking statements in this Form 10-Q are based on information available to the Company as of the date of this Form 10-Q, and the Company undertakes no obligation to publicly update or otherwise revise any forward-looking statement, whether as a result of new information, future events or otherwise, except as required by applicable law.

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Overview

Executive Summary

The Company operates with a strategic, long-term outlook, which is focused on organic growth and supports such growth by continually investing in our people, products, services, technology, and our branch network.

Our financial condition at March 31, 2023, as well as the results of operations for the three months ended March 31, 2023, have been impacted by significant increases in market interest-rates due to the 475 basis point increase in the prime lending rate since March 2022 by the Federal Reserve Board in response to the persistent inflationary environment in the United States. The impact is addressed as applicable throughout this Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations."

Net income for the three months ended March 31, 2023, amounted to $10.8 million, or $0.88 per diluted common share, compared to $10.3 million, or $0.85 per diluted common share, for the three months ended March 31, 2022. The increase was attributable primarily to an increase in net interest income of $5.9 million, partially offset by increases in the provision for credit losses of $2.2 million and non-interest expense of $2.3 million and a decrease in non-interest income of $838 thousand.

Total assets amounted to $4.44 billion at both March 31, 2023 and December 31, 2022. Investment securities at fair value increased $10.5 million, or 1%, compared to December 31, 2022, primarily from an increase in the fair value of the debt securities portfolio of $26.2 million due to lower market interest rates, partially offset by principal pay-downs, calls and maturities during the period. Total loans increased $49.6 million, or 1.6% (6% annualized), compared to December 31, 2022, primarily from net growth in the commercial construction portfolio, amounting to $32.7 million.

The ACL for loans amounted to $55.0 million, or 1.70% of total loans, at March 31, 2023, compared to $52.6 million, or 1.66% of total loans, at December 31, 2022. The reserve for unfunded commitments (included in other liabilities) amounted to $4.7 million at March 31, 2023, compared to $4.3 million at December 31, 2022. The increase in credit loss reserves resulted primarily from a forecasted increase in the probability and severity of a recession in our allowance model, and to a lesser extent, growth in the Company's loan portfolio and off-balance sheet commitments.

During the three months ended March 31, 2023, customer deposits decreased $19.7 million, or 0.5% (2% annualized). The decrease in customer deposits reflected a highly competitive environment in which deposit customers have access to higher yielding money market and treasury alternatives. In addition, customer deposits at March 31, 2023 were positively impacted by the receipt of a large deposit of approximately $60.0 million that management believes may be temporary and resulted from a customer business transaction.

During the three months ended March 31, 2023, shareholders' equity increased $29.1 million, due primarily to a reduction in the accumulated other comprehensive loss ("AOCL") of $20.2 million related to an increase in the fair value of the debt securities portfolio which was driven by lower market interest rates during the period.

Update on Liquidity, Deposit Composition and Funding Capacity

All balances and ratios presented below are at March 31, 2023 unless otherwise indicated.

•The Company reported a favorable overnight and short-term investment balance of $172.9 million, which was reported on the balance sheet as interest-earning deposits with banks.

•Total loans amounted to 80% of total deposits.

•There were no brokered deposits and only $3.2 million in wholesale borrowings outstanding, which related to participation in specific pass-through community development programs under the Federal Home Loan Bank of Boston ("FHLB") and to a lesser extent the New Hampshire Business Finance Authority.

•Core deposits (which are total deposits excluding CDs over $250 thousand) amounted to 96% of total deposits.

•Total checking account balances amounted to 47% of total deposits, including non-interest-bearing deposits, which were 31% of total deposits.

•The Company utilized enhanced Federal Deposit Insurance Corporation ("FDIC") insured products and pledged investment securities as collateral for certain deposits. Uninsured deposits, not collateralized, amounted to 36% of total deposits. The company has significant additional capacity to further utilize enhanced FDIC insured products.

•FHLB and FRB secured borrowing capacity amounted to $1.1 billion. In April 2023, the Company pledged additional collateral to the FHLB and intends to participate in the FRB's Bank Term Funding Program. It is anticipated these

32

changes will increase the secured borrowing capacity to approximately $1.4 billion, exclusive of any borrowings outstanding.

•The Company had several brokered deposit relationships (unsecured borrowings) available which could provide approximately $800.0 million in additional funding capacity.

Selected Financial Data and Ratios

The following table sets forth selected financial data and ratios for the Company at or for the three-month periods indicated:

	At or for the three months ended
(Dollars in thousands, except per share data)	March 31, 2023			December 31, 2022			September 30, 2022			June 30, 2022			March 31, 2022
Balance Sheet Data
Total cash and cash equivalents	$	215,693		$	267,589		$	413,688		$	306,460		$	429,687
Total investment securities at fair value	830,895			820,371			831,030			866,580			910,013
Total loans	3,230,156			3,180,518			3,109,369			3,084,915			2,962,721
Allowance for credit losses	(55,002)			(52,640)			(51,211)			(50,703)			(48,424)
Total assets	4,441,896			4,438,333			4,529,820			4,417,447			4,454,474
Total deposits	4,016,156			4,035,806			4,138,038			4,016,814			4,034,500
Subordinated debt	59,261			59,182			59,102			59,039			59,009
Total shareholders' equity	311,318			282,267			272,193			285,110			310,539
Total liabilities and shareholders' equity	4,441,896			4,438,333			4,529,820			4,417,447			4,454,474
Wealth Management
Wealth assets under management	$	930,714		$	891,451		$	835,661		$	849,536		$	961,491
Wealth assets under administration	$	206,569		$	198,586		$	185,977		$	205,646		$	243,247
Shareholders' Equity Ratios
Book value per common share	$	25.47		$	23.26		$	22.44		$	23.53		$	25.66
Dividends paid per common share	$	0.230		$	0.205		$	0.205		$	0.205		$	0.205
Regulatory Capital Ratios
Total capital to risk weighted assets	13.55		%	13.49		%	13.49		%	13.38		%	13.72		%
Tier 1 capital to risk weighted assets(1)	10.64		%	10.56		%	10.52		%	10.38		%	10.65		%
Tier 1 capital to average assets (leverage ratio)	8.47		%	8.10		%	7.89		%	8.03		%	7.83		%
Credit Quality Data
Non-performing loans	$	7,532		$	6,122		$	5,717		$	6,321		$	25,173
Non-performing loans to total loans	0.23		%	0.19		%	0.18		%	0.20		%	0.85		%
Non-performing assets to total assets	0.17		%	0.14		%	0.13		%	0.14		%	0.57		%
ACL for loans to total loans	1.70		%	1.66		%	1.65		%	1.64		%	1.63		%
Income Statement Data
Net interest income	$	39,971		$	42,165		$	39,779		$	35,821		$	34,033
Provision for credit losses	2,736			1,861			1,000			2,409			530
Total non-interest income	4,757			4,210			4,525			4,132			5,595
Total non-interest expense	28,040			28,167			27,537			26,853			25,757
Income before income taxes	13,952			16,347			15,767			10,691			13,341
Provision for income taxes	3,184			4,041			3,805			2,530			3,054
Net income	$	10,768		$	12,306		$	11,962		$	8,161		$	10,287
Income Statement Ratios
Diluted earnings per common share	$	0.88		$	1.01		$	0.98		$	0.67		$	0.85
Return on average total assets	0.99		%	1.08		%	1.05		%	0.76		%	0.95		%
Return on average shareholders' equity	14.67		%	18.08		%	16.47		%	11.24		%	12.56		%
Net interest margin (tax-equivalent)(2)	3.76		%	3.81		%	3.61		%	3.45		%	3.28		%

_______________________________________________________

(1)Ratio also represents common equity tier 1 capital to risk weighted assets as of the periods presented.

(2)Tax-equivalent net interest margin is net interest income adjusted for the tax-equivalent effect associated with tax-exempt loan and investment income, expressed as a percentage of average interest-earning assets.

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Risk Management Framework

Management utilizes a comprehensive enterprise risk management framework that enables a coordinated and structured approach for identifying, assessing and managing risks across the Company and provides reasonable assurance that management has the tools, programs, people, and processes in place to support informed decision making, anticipate risks before they materialize and maintain the Company's risk profile consistent with its strategic planning, and applicable laws and regulations.

See Part I, Item 1, "Business," under the "Risk Management Framework," of the Company's 2022 Annual Report on Form 10-K, for additional information on the Company's key risk mitigation strategies, and Part I, Item 1A, "Risk Factors," section of the Company's 2022 Annual Report on Form 10-K for numerous factors that could adversely affect the Company's future results of operations and financial condition, and its reputation and business model.

Accounting Policies/Critical Accounting Estimates

As discussed in the Company's 2022 Annual Report on Form 10-K and in this Form 10-Q, the most significant areas in which management applies critical assumptions and estimates are: the estimates of the ACL for loans and available-for-sale securities, the reserve for unfunded commitments and the impairment review of goodwill.

The Company has not materially changed its significant accounting and reporting policies from those disclosed in its 2022 Annual Report on Form 10-K.

Recent Accounting Pronouncements

See Note 1, Item (d), "Recent Accounting Pronouncements," to the Company's unaudited consolidated interim financial statements in this Form 10-Q for information regarding recent accounting pronouncements.

Results of Operations for the three months ended March 31, 2023 and March 31, 2022

Unless otherwise indicated, the reported results are for the three months ended March 31, 2023 with the "prior year period," being the three months ended March 31, 2022. Average yields are presented on an annualized tax equivalent basis.

Net Income

Net income for the three months ended March 31, 2023, amounted to $10.8 million, an increase of $481 thousand, or 5%, compared to the three months ended March 31, 2022.

•The increase in net income during the current period was due primarily to an increase in net interest income of $5.9 million, partially offset by increases in the provision for credit losses of $2.2 million and non-interest expense of $2.3 million and a decrease in non-interest income of $838 thousand.

Net Interest Income

Net interest income for the three months ended March 31, 2023, amounted to $40.0 million, an increase of $5.9 million, or 17%, compared to the three months ended March 31, 2022.

•The increase in net interest income during the current period was due largely to increases in loan interest income of $8.9 million and other interest-earning asset income of $2.0 million, partially offset by an increase in deposit interest expense of $5.4 million.

Net Interest Margin

Three months ended – March 31, 2023 compared to March 31, 2022

Tax-equivalent net interest margin ("net interest margin") (non-GAAP) was 3.76% for the three months ended March 31, 2023, compared to 3.28% for the three months ended March 31, 2022.

Net interest margin during the current period compared to the prior year period was impacted by the following factors:

•Average interest-earning deposits with banks decreased $185.1 million, or 49%, while the yield increased 430 basis points. The decrease in average balance resulted primarily from funding loan growth and the increase in yield reflected a significant increase in market interest rates over the last twelve months.

•Average investment securities decreased $9.3 million, or 1%, while the tax-equivalent yield increased 22 basis points.

34

•Average loans increased $289.6 million, or 10%, and the tax-equivalent yield increased 73 basis points. The increase in loan yield resulted primarily from an increase in the prime lending rate of 475 basis points over the last twelve months, partially offset by a decrease in Paycheck Protection Program ("PPP") income of $1.5 million, due to the continued forgiveness of PPP loans, over the respective periods.

•Average total deposits increased $62.6 million, or 2%, and the yield increased 55 basis points from increases in market interest rates, a shift in deposit mix to higher-yielding products and competition from bank and non-bank alternatives. The yield increases occurred principally over the last six months.

Interest-rate risk is reviewed in detail in Item 3, "Quantitative and Qualitative Disclosures About Market Risk," below.

Rate / Volume Analysis

The following table sets forth, on a tax-equivalent basis, the extent to which changes in interest rates and changes in the average balances of interest-earning assets and interest-bearing liabilities have affected interest income and expense during the three months ended March 31, 2023, compared to the three months ended March 31, 2022. For each category of interest-earning assets and interest-bearing liabilities, information is provided on changes attributable to: (i) volume (change in average portfolio balance multiplied by prior year average rate); and (ii) interest rate (change in average interest rate multiplied by prior year average balance). Changes attributable to the combined impact of volume and rate have been allocated proportionately based on absolute value to the changes due to volume and the changes due to rate.

			Increase (decrease) due to
(Dollars in thousands)	Net Change		Volume		Rate
Interest income
Loans and loans held for sale (tax equivalent)	$	8,873	$	3,114	$	5,759
Investment securities (tax equivalent)	480		(55)		535
Other interest-earning assets(1)	2,027		(128)		2,155
Total interest-earning assets (tax equivalent)	11,380		2,931		8,449
Interest expense
Interest checking, savings and money market	3,727		(2)		3,729
CDs	1,660		230		1,430
Borrowed funds	(1)		(4)		3
Subordinated debt	49		3		46
Total interest-bearing funding	5,435		227		5,208
Change in net interest income (tax equivalent)	$	5,945	$	2,704	$	3,241

__________________________________________

(1)Income on other interest-earning assets includes interest on deposits with banks, federal funds sold, and dividends on FHLB stock.

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The following table presents the Company's average balance sheet, net interest income and average rates for the three months ended March 31, 2023 and 2022: 

AVERAGE BALANCES, INTEREST AND AVERAGE YIELDS

	Three months ended March 31, 2023						Three months ended March 31, 2022
(Dollars in thousands)	Average Balance		Interest(1)		Average Yield(1)		Average Balance		Interest(1)		Average Yield(1)
Assets:
Loans and loans held for sale(2) (tax equivalent)	$	3,200,842	$	39,679	5.02	%	$	2,911,282	$	30,806	4.29	%
Investment securities(3) (tax equivalent)	937,382		5,300		2.26	%	946,732		4,820		2.04	%
Other interest-earning assets(4)	198,741		2,208		4.51	%	383,588		181		0.19	%
Total interest-earnings assets (tax equivalent)	4,336,965		47,187		4.40	%	4,241,602		35,807		3.41	%
Other assets	86,580						154,167
Total assets	$	4,423,545					$	4,395,769
Liabilities and stockholders' equity:
Interest checking, savings and money market	$	2,354,967	4,105		0.71	%	$	2,371,320	378		0.06	%
CDs	337,361		1,882		2.26	%	202,702		222		0.44	%
Borrowed funds	3,206		12		1.57	%	4,263		13		1.27	%
Subordinated debt(5)	59,213		867		5.85	%	58,991		818		5.54	%
Total interest-bearing funding	2,754,747		6,866		1.01	%	2,637,276		1,431		0.22	%
Non-interest checking	1,317,534		—		—	%	1,373,267		—		—	%
Total deposits, borrowed funds and subordinated debt	4,072,281		6,866		0.68	%	4,010,543		1,431		0.14	%
Other liabilities	53,665						53,192
Total liabilities	4,125,946						4,063,735
Stockholders' equity	297,599						332,034
Total liabilities and stockholders' equity	$	4,423,545					$	4,395,769
Net interest-rate spread (tax equivalent)					3.39	%					3.19	%
Net interest income (tax equivalent)			40,321						34,376
Net interest margin (tax equivalent)					3.76	%					3.28	%
Less tax equivalent adjustment			350						343
Net interest income			$	39,971					$	34,033
Net interest margin					3.73	%					3.25	%

_______________________________________

(1)Average yields and interest income are presented on a tax equivalent basis, calculated using a U.S. federal income tax rate of 21% in both 2023 and 2022, based on tax equivalent adjustments associated with tax exempt loans and investments interest income.

(2)Average loans and loans held for sale include non-accrual loans and are net of average deferred loan fees.

(3)Average investment balances are presented at average amortized cost.

(4)Average other interest-earning assets includes interest-earning deposits with banks, federal funds sold, and FHLB stock.

(5)The subordinated debt is net of average deferred debt issuance costs.

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Provision for Credit Losses

The provision for credit losses for the three months ended March 31, 2023, amounted to $2.7 million, an increase of $2.2 million, compared to the three months ended March 31, 2022.

•The provision for credit losses for the three months ended March 31, 2023, consisted of $2.3 million in reserves for loans outstanding and $418 thousand in reserves for unfunded commitments (included in other liabilities).

•The increase in the provision for credit losses resulted primarily from a forecasted increase in the probability and severity of a recession in our allowance model and, to a lesser extent, growth in the Company's loan portfolio and off-balance sheet commitments.

The provision for credit losses is a significant factor in the Company's operating results. For further discussion regarding the provision for credit losses and management's assessment of the adequacy of the ACL for loans see "Asset Quality," and "ACL for Loans" under "Financial Condition" in this Item 2, below.

Non-Interest Income

Non-interest income for the three months ended March 31, 2023, amounted to $4.8 million, a decrease of $838 thousand, or 15%, compared to the three months ended March 31, 2022.

•Non-interest income in the prior year period included net gains on sales of debt securities of $1.1 million. Excluding this item, non-interest income increased $223 thousand, or 5%.

•The change resulted primarily from increases in deposit and interchange fees of $246 thousand and swap fee income of $313 thousand, partially offset by a decrease in insurance commission income of $147 thousand. The latter two items were recorded in other income.

Non-Interest Expense

Non-interest expense for the three months ended March 31, 2023, amounted to $28.0 million, an increase of $2.3 million, or 9%, compared to the three months ended March 31, 2022. The increase resulted primarily from an increase in salaries and employee benefits of $1.7 million, primarily to support the Company's strategic growth initiatives.

Income Taxes

The effective tax rate for the three months ended March 31, 2023, was 22.8%, compared to 22.9% for the three months ended March 31, 2022.

Financial Condition

Total assets amounted to $4.44 billion at both March 31, 2023 and December 31, 2022, representing an increase of $3.6 million. The balance sheet composition and changes since December 31, 2022, are discussed below.

Cash and cash equivalents

Cash and cash equivalents at March 31, 2023 decreased $51.9 million since December 31, 2022. At March 31, 2023 and December 31, 2022, cash and cash equivalents amounted to 5% and 6% of total assets, respectively. The decrease in cash and cash equivalents since December 31, 2022 was related primarily to funding loan growth.

Investments

At March 31, 2023, the fair value of the investment securities portfolio amounted to $830.9 million, an increase of $10.5 million, or 1%, since December 31, 2022. The investment securities portfolio at fair value represented 19% and 18% of total assets at March 31, 2023 and December 31, 2022, respectively. The increase resulted primarily from an increase in the fair value of the Company's debt securities portfolio of $26.2 million, during the three months ended March 31, 2023, caused primarily by lower market interest rates compared to December 31, 2022, partially offset by principal pay-downs, calls and maturities during the period. As of March 31, 2023 and December 31, 2022, the Company's investment securities portfolio was comprised primarily of debt securities, classified as available-for-sale, with a small portion of the portfolio invested in equity securities.

During the three months ended March 31, 2023, the Company has no purchases or sales of debt securities and had principal pay-downs, calls and maturities totaling $16.4 million.

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During the three months ended March 31, 2022, the Company purchased $68.3 million in debt securities, had principal pay-downs, calls and maturities totaling $26.1 million, and sold debt securities with an amortized cost of approximately $31.7 million realizing net gains on sales of $1.1 million.

Net unrealized losses on the debt securities portfolio amounted to $98.0 million at March 31, 2023, compared to $124.1 million at December 31, 2022. The Company attributes the change in net unrealized losses compared to December 31, 2022 to a decrease in market interest rates during the period.

The mix of investment securities remained relatively unchanged at March 31, 2023 compared to December 31, 2022. The effective duration of the debt securities portfolio at March 31, 2023 was approximately 4.9 years compared to 5.0 years at December 31, 2022.

Loans

As of March 31, 2023, total loans increased $49.6 million, or 2%, compared to December 31, 2022. The mix of loans within the Company's loan portfolio remained relatively unchanged with commercial loans amounting to 87% of total loans at both March 31, 2023 and December 31, 2022.

The following table sets forth the loan balances by loan portfolio segment at the dates indicated and the percentage of each segment to total loans:

	March 31, 2023				December 31, 2022				March 31, 2022
(Dollars in thousands)	Amount		Percent		Amount		Percent		Amount		Percent
Commercial real estate	$	1,929,544	60	%	$	1,921,410	61	%	$	1,779,691	60	%
Commercial and industrial	423,864		13	%	414,490		13	%	408,341		14	%
Commercial construction	456,735		14	%	424,049		13	%	375,709		13	%
SBA PPP	—		—	%	—		—	%	32,153		1	%
Total commercial loans	2,810,143		87	%	2,759,949		87	%	2,595,894		88	%
Residential mortgages	335,834		10	%	332,632		10	%	280,507		9	%
Home equity	75,809		2	%	79,807		3	%	78,557		3	%
Consumer	8,370		—	%	8,130		—	%	7,763		—	%
Total retail loans	420,013		13	%	420,569		13	%	366,827		12	%
Total loans	3,230,156		100	%	3,180,518		100	%	2,962,721		100	%
Allowance for credit losses	(55,002)				(52,640)				(48,424)
Net loans	$	3,175,154			$	3,127,878			$	2,914,297

As of, or for the three months ended March 31, 2023,

•Commercial real estate loans increased $8.1 million, or 0.4%, compared to December 31, 2022.

•Commercial and industrial loans increased by $9.4 million, or 2.3%, compared to December 31, 2022.

•Commercial construction loans increased by $32.7 million, or 7.7%, since December 31, 2022. The increase resulted from strong customer demand.

•Total retail loans decreased by $556 thousand, or 0.1%, since December 31, 2022.

At March 31, 2023, commercial loan balances participated out to various banks amounted to $58.3 million, compared to $59.1 million at December 31, 2022. These balances participated out to other institutions are not carried as assets on the Company's financial statements. Commercial loans originated by other banks in which the Company is a participating institution are carried at the pro-rata share of ownership and amounted to $101.7 million and $94.8 million at March 31, 2023 and December 31, 2022, respectively. See Note 3, "Loans," to the Company's unaudited consolidated interim financial statements contained in Item 1 of this Form 10-Q above for information on loans serviced for others and loans pledged as collateral.

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Asset Quality

The following table sets forth information regarding the Company's loan portfolio asset quality at the dates indicated:

(Dollars in thousands)	March 31, 2023			December 31, 2022			March 31, 2022
Non-accrual loan summary:
Commercial real estate	$	4,926		$	3,355		$	21,854
Commercial and industrial	673			730			1,293
Commercial construction	—			294			1,028
Residential mortgages	1,565			1,532			763
Home equity	368			211			237
Consumer	—			—			—
Total non-performing loans	7,532			6,122			25,175
Total loans	$	3,230,156		$	3,180,518		$	2,962,721
Delinquent loans 60-89 days past due and still accruing	$	944		$	1,307		$	—
Loans 60-89 days past due and still accruing to total loans	0.03		%	0.04		%	—		%
Non-performing loans to total loans	0.23		%	0.19		%	0.85		%
Non-performing assets to total assets	0.17		%	0.14		%	0.57		%
Allowance for credit losses for loans	$	55,002		$	52,640		$	48,424
Allowance for credit losses for loans to non-performing loans	730.24		%	859.85		%	192.35		%
Allowance for credit losses for loans to total loans	1.70		%	1.66		%	1.63		%

The Company had no OREO at March 31, 2023, December 31, 2022 or March 31, 2022, and therefore non-performing loans were the only component of non-performing assets. The slight increase in non-performing loans at March 31, 2023 compared to December 31, 2022 was due primarily to commercial relationships placed on non-accrual status during the period, partially offset by payoffs, credit upgrades and principal pay-downs. During the second quarter of 2022, two commercial relationships, amounting to $17.9 million, were upgraded and restored to accrual status due to improved financial strength and consistent payment history.

At March 31, 2023 and December 31, 2022, adversely classified loans amounted to $46.4 million and $47.0 million, respectively. Adversely classified loans that were performing amounted to $38.9 million and $40.9 million at March 31, 2023 and December 31, 2022, respectively. Adversely classified loans which were included in non-accrual loans amounted to $7.5 million and $6.1 million at March 31, 2023 and December 31, 2022, respectively.

ACL for Loans

There have been no material changes to the Company's underwriting practices or credit risk management system used to estimate credit loss exposure as described in the 2022 Annual Report on Form 10-K. See Note 4, "ACL for Loans," to the Company's audited consolidated financial statements contained in the 2022 Annual Report on Form 10-K. 

See Note 4, "ACL for Loans," to the Company's unaudited consolidated interim financial statements, contained in Item 1 in this Form 10-Q, for further information regarding credit quality and the allowance for credit losses under the current expected credit loss ("CECL") methodology.

While management uses available information and judgment to estimate credit losses on loans, future additions to the ACL may be necessary. In addition, various regulatory agencies, as an integral part of their examination process, periodically review the Company's ACL for loans. Such agencies may require the Company to recognize additions to the ACL for loans based on judgments different from those of management.

39

ACL for loans activity

The following table summarizes the activity in the ACL for loans for the periods indicated: 

	Three months ended March 31,
(Dollars in thousands)	2023			2022
Balance at beginning of year	$	52,640		$	47,704
Provision for credit losses for loans	2,318			825
Recoveries on charged-off loans:
Commercial real estate	—			—
Commercial and industrial	127			24
Commercial construction	—			—
Residential mortgages	—			—
Home equity	3			4
Consumer	3			5
Total recovered	133			33
Charged-off loans
Commercial real estate	—			—
Commercial and industrial	83			105
Commercial construction	—			—
Residential mortgages	—			—
Home equity	—			—
Consumer	6			33
Total charged-off	89			138
Net loans (recovered) charged-off	(44)			105
Ending balance	$	55,002		$	48,424
Annualized net loans (recovered) charged-off to average loans outstanding	(0.01)		%	0.01		%

See Note 4, "ACL for Loans," to the Company's unaudited consolidated interim financial statements, contained in Item 1 in this Form 10-Q, for further information regarding the ACL for loans and credit quality.

Reserve for unfunded commitments

The reserve for unfunded commitments is classified within "Other liabilities" on the Company's Consolidated Balance Sheets. The estimate of credit loss incorporates assumptions for both the likelihood and amount of funding over the estimated life of the non-cancellable commitments, including adjustments for current conditions and reasonable and supportable forecasts. Management periodically reviews and updates its assumptions for estimated funding rates.

The Company's reserve for unfunded commitments amounted to $4.7 million as of March 31, 2023 and $4.3 million at December 31, 2022. The provision for unfunded commitments for the three months ended March 31, 2023 amounted to $418 thousand compared to a benefit of $295 thousand for the three months ended March 31, 2022.

Based on the foregoing, management believes that the Company's ACL for loans and reserve for unfunded commitments is adequate as of March 31, 2023.

Deposits

As of March 31, 2023, customer deposits decreased $19.7 million, or 0%, since December 31, 2022. Checking account balances decreased $151.9 million, or 7%, money market and savings account balances increased $44.3 million, or 3%, and certificates of deposit account balances increased $87.9 million, or 31%.

40

The following table sets forth the deposit balances by certain categories at the dates indicated and the percentage of each category to total deposits:

	March 31, 2023				December 31, 2022				March 31, 2022
(Dollars in thousands)	Amount		Percent		Amount		Percent		Amount		Percent
Checking	$	1,888,447	47	%	$	2,040,303	51	%	$	2,162,154	54	%
Money markets and savings	1,752,648		44	%	1,708,311		42	%	1,672,593		41	%
Certificates of deposit ("CDs")	375,061		9	%	287,192		7	%	199,753		5	%
Deposits	$	4,016,156	100	%	$	4,035,806	100	%	$	4,034,500	100	%

Total customer deposits include reciprocal balances from checking, money market deposits and CDs received from participating banks in nationwide deposit networks as a result of our customers electing to participate in Company offered programs which allow for enhanced FDIC insurance. Under this enhanced deposit insurance program, the equivalent of the customers' original deposited funds are reciprocated back through the network to the Company and are carried within the appropriate category under deposits. The Company's balances in these reciprocal products were $721.1 million and $589.7 million, at March 31, 2023 and December 31, 2022, respectively.

In addition to enhanced FDIC insured products, we pledge investment securities as collateral for certain municipal balances as needed. Uninsured deposits, not collateralized, amounted to 36% of total deposits. We had significant additional capacity to further utilize enhanced FDIC insured products.

Borrowed Funds

The Company had borrowed funds outstanding of $3.2 million at both March 31, 2023 and December 31, 2022, which were comprised of FHLB advances related to specific lending projects under the FHLB's community development and affordable housing programs as well as a small portion of borrowed funds from a New Hampshire Business Finance Authority borrowing under a New Hampshire community development program linked to a commercial loan.

See also "Liquidity" below for additional information on borrowing capacity.

Subordinated Debt

The Company had outstanding subordinated debt, net of deferred issuance costs, of $59.3 million at March 31, 2023 compared to $59.2 million at December 31, 2022.

See also Note 7, "Borrowed Funds and Subordinated Debt," to the Company's unaudited consolidated interim financial statements contained in Item 1 above in this Form 10-Q, for further information regarding the Company's subordinated debt.

Shareholders' Equity

Total shareholders' equity amounted to $311.3 million at March 31, 2023, compared to $282.3 million at December 31, 2022, an increase of $29.1 million, or 10%. The increase was due primarily to an increase in retained earnings of $8.0 million and a reduction in the AOCL, which was driven by an increase in the fair value of debt securities ($20.2 million, net of tax), resulting from lower market interest rates during the period.

For the three months ended March 31, 2023 and March 31, 2022, the Company declared cash dividends of $2.8 million and $2.5 million, respectively, and shareholders utilized the dividend reinvestment portion of the Company's dividend reinvestment and direct stock purchase plan to purchase aggregate shares of the Company's common stock amounting to 10,395 shares and 8,915 shares, totaling $370 thousand and $346 thousand, respectively.

On April 18, 2023, the Company announced a quarterly dividend of $0.23 per share to be paid on June 1, 2023 to shareholders of record as of May 11, 2023.

41

Derivatives and Hedging

The Company had no fair value or cash flow hedges at either March 31, 2023 or December 31, 2022.

The notional value of back-to-back interest-rate swaps with customers and counterparties amounted to $7.7 million at March 31, 2023 and $7.8 million at December 31, 2022. The fair value of assets and corresponding liabilities associated with these swaps and carried on the Company's Consolidated Balance Sheets was $624 thousand at March 31, 2023 compared to $782 thousand at December 31, 2022.

The notional value of RPAs sold amounted to $46.9 million at March 31, 2023 and $24.7 million at December 31, 2022. The fair value of RPAs, carried on the Company's Consolidated Balance Sheets as a liability, was $98 thousand at March 31, 2023 and $73 thousand at December 31, 2022.

For further information on the Company's derivatives and hedging activities see Note 8, "Derivatives and Hedging Activities," to the Company's unaudited consolidated interim financial statements contained in Item 1 above in this Form 10-Q.

Liquidity

Liquidity is the ability to meet cash needs arising from, among other things, fluctuations in loans, investments, deposits and

borrowings. Liquidity management is the coordination of activities so that cash needs are anticipated and met readily and

efficiently. The Company's liquidity is maintained by projecting cash needs, balancing maturing assets with maturing liabilities, monitoring various liquidity ratios, monitoring deposit flows, maintaining cash flow within the investment portfolio, and maintaining wholesale funding resources.

The Company's wholesale funding sources included primarily borrowing capacity at the FHLB and brokered deposits. In addition, the Company's secondary funding sources include uncommitted overnight federal fund purchase arrangements with correspondent banks and access to the FRB Discount Window. At March 31, 2023, the Bank had the capacity to borrow additional funds from the FHLB and FRB Discount Window of up to approximately $790.0 million and $310.0 million, respectively.

In April 2023, we pledged additional collateral to the FHLB and intend to participate in the FRB’s Bank Term Funding Program. We anticipate these changes will increase our secured borrowing capacity to approximately $1.4 billion, exclusive of any borrowings outstanding.

Management believes that the Company has adequate liquidity to meet its obligations. However, if general economic conditions, potential recession in the United States and our market areas, continuation of recent uncertainty in the banking industry, changes in market interest rates, persistence of the current inflationary environment in the United States and our market areas, or other events, cause these sources of external funding to become restricted or are eliminated, the Company may not be able to raise adequate funds or may incur substantially higher funding costs or operating restrictions in order to raise the necessary funds to support the Company's operations and growth.

Capital Resources

The principal cash requirement of the Company is the payment of interest on subordinated debt and the payment of dividends on our common stock. The Company's Board of Directors approves cash dividends on a quarterly basis after careful analysis and consideration of various factors, including our capital position, economic conditions, growth rates, earnings performance and projections as well as strategic initiatives and related capital requirements.

The Company's primary source of cash is dividends paid by the Bank, which are limited to the Bank's net income for the current year plus its retained net income for the prior two years.

The Company's total capital and tier 1 capital to risk weighted assets amounted to 13.55% and 10.64%, respectively, at March 31, 2023, compared to 13.49% and 10.56%, respectively, at December 31, 2022. The increases were driven primarily by an increase in retained earnings, partially offset by commercial loan growth during the period.

Tier 1 capital to average assets amounted to 8.47% at March 31, 2023, compared to 8.10% at December 31, 2022. The increase was driven primarily by the increase in retained earnings noted above, partially offset by an increase in average assets, due primarily to commercial loan growth.

42

For further information about the Company's capital, see Note 9 "Regulatory Capital Requirements," to the Company's unaudited consolidated interim financial statements contained in Item 1 of this Form 10-Q.

Wealth Management

Wealth assets under management and wealth assets under administration are not carried as assets on the Company's consolidated balance sheets. The Company provides a wide range of wealth management and wealth services, including investment management, brokerage, annuities, trust, and 401(k) administration.

Wealth assets under management and wealth assets under administration amounted to $930.7 million and $206.6 million, respectively, at March 31, 2023, representing increases of $39.3 million, or 4%, and $8.0 million, or 4%, respectively, compared to December 31, 2022. The increases in wealth assets under management and administration were attributable primarily to increase in market values during the three months ended March 31, 2023.

Item 3 -Quantitative and Qualitative Disclosures About Market Risk

Interest Margin Sensitivity Analysis

Refer to Part II, Item 7A, "Quantitative and Qualitative Disclosures About Market Risk" of the Company's 2022 Annual Report on Form 10-K for further information on the Company's net interest income and net interest margin sensitivity under different interest rate and yield curve scenarios as well as different asset and liability mix scenarios.

Over the past twelve months the Prime Lending Rate has increased 475 basis points and the Company’s net interest margin benefited as increases in asset yields exceeded increases in the costs of funds, which often lag asset yield increases over the short term in a rising rate environment. Absent further increases in the Prime Lending Rate and assuming a static balance, future increases in the cost of funds may exceed increases in asset yields and reduce net interest margin in the interest rates unchanged scenario.

The table below summarizes the results from and compares the percent change in net interest income to the rates unchanged scenario, assuming a static balance sheet, for a 24-month period at March 31, 2023 and December 31, 2022.

At March 31, 2023, the Company's net interest income sensitivity simulation results were for a decrease in net interest income in both rising and declining interest rate scenarios. At March 31, 2023 compared to December 31, 2022, net interest income sensitivity in the rising interest rate scenarios shifted from an increase in net interest income to a decrease and net interest income sensitivity in the declining interest rate scenario decreased.

•In the 200 and 400 basis point rising interest rate scenarios, net interest income was projected to decrease in the first 24 months compared to an increase at December 31, 2022 primarily due to a shift in deposit composition from non-interest-bearing account balances into interest-bearing account balances that have a higher level of interest rate sensitivity, and from a lower balance of net short-term liquidity that repriced immediately.

•In the 200 basis point declining interest rate scenario, the percent decrease in net interest income was lower compared to the results at December 31, 2022. At March 31, 2023, deposit yields increased above the lower levels experienced at December 31, 2022 when deposit yields were closer to zero. As deposit yields increase, it allows for a higher level of rate declines in the 200 basis point declining rate scenario, which improved net interest income sensitivity results.

(Dollars in thousands, except for percentage data)	March 31, 2023		December 31, 2022
Changes in interest rates	Percentage Change		Percentage Change
Rates Rise 400 Basis Points	(0.73)	%	1.20	%
Rates Rise 200 Basis Points	(0.48)	%	0.45	%
Rates Unchanged	—	%	—	%
Rates Decline 200 Basis Points	(2.51)	%	(5.34)	%

The results in the table above are subject to various assumptions as reported in Part II, Item 7A, "Quantitative and Qualitative Disclosures About Market Risk" of the Company's 2022 Annual Report on Form 10-K. Refer to heading "Results of Operations" contained within Item 2, "Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Form 10-Q for further discussion of margin.

43

Item 4 -Controls and Procedures

Evaluation of Disclosure Controls and Procedures

The Company maintains a set of disclosure controls and procedures and internal controls designed to ensure that the information required to be disclosed in reports that it files or furnishes to the SEC under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), is recorded, processed, summarized, and reported within the time periods specified in the SEC's rules and forms.

The Company carried out an evaluation as of the end of the period covered by this Form 10-Q under the supervision and with the participation of the Company's management, including its principal executive officer and principal financial officer, of the effectiveness of the design and operation of the Company's disclosure controls and procedures pursuant to Exchange Act Rule 13a-15(b). Based upon that evaluation, the Company's principal executive officer and principal financial officer concluded that the Company's disclosure controls and procedures are effective as of March 31, 2023.

Changes in Internal Control over Financial Reporting

There have been no significant changes in the Company's internal control over financial reporting that occurred during the Company's most recent fiscal quarter (i.e., the three months ended March 31, 2023) that materially affected, or is reasonably likely to materially affect, the Company's internal control over financial reporting.

PART II - OTHER INFORMATION

Item 1 -Legal Proceedings

There are no material pending legal proceedings to which the Company or its subsidiaries are a party or to which any of its property is subject, other than ordinary routine litigation incidental to the business of the Company. Management does not believe resolution of any present litigation will have a material adverse effect on the business, consolidated financial condition or results of operations of the Company.

Item 1A -Risk Factors

Except as provided in the risk factor below, management believes that there have been no material changes in the Company's risk factors as reported in the 2022 Annual Report on Form 10-K. However, if the United States or the markets in which we operate encounter sustained economic stress or recession, many of the risk factors identified in the Company’s 2022 Annual Report on Form 10-K could become heightened and such effects could have a material adverse impact on the Company in a number of ways related to key risk areas including Economic & Financial Markets, Liquidity, Credit and Collateral, Capital and Operations, among others.

Recent bank failures and the related negative impact on customer confidence in the safety and soundness of the banking industry may adversely affect our business, earnings and financial condition.

When other financial institutions experience severe financial difficulties it could result in an adverse impact on the regional banking industry, generally, and the business environment in which the Company operates. The failures of three large regional banks in 2023 have resulted in significant market volatility among publicly traded bank holding companies which has caused uncertainty in the investor community and bank customers, generally. This uncertainty may negatively impact customer confidence in the safety and soundness of regional banks and, as a result, the Company’s customers may choose to withdraw some or all of their deposited funds, and seek higher yielding alternatives, which could have a materially adverse impact on our liquidity, cost of funding, loan funding capacity, net interest margin, capital and results of operations.

Management continues to monitor the ongoing events concerning the recent bank failures, potential bank failures and volatility within the financial services industry generally, together with any responsive measures that may be taken by the banking regulators in an attempt to mitigate or manage potential turmoil in the financial services industry.

44

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

The following table represents information with respect to repurchases of common stock made by the Company during the three months ended March 31, 2023:

	Total number of shares repurchased(1)	Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs Announced	Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs
January	1,828	$	35.50	—	—
February	—	$	—	—	—
March	4,126	$	32.39	—	—

_________________________________

(1)Amounts include shares repurchased that were not part of a publicly announced repurchase plan or program. These shares were owned and tendered by employees as payment for taxes upon vesting of restricted stock (net settlement of shares).

Item 3 -Defaults upon Senior Securities

Not Applicable.

Item 4 -Mine Safety Disclosures

Not Applicable.

Item 5 -Other Information

Not Applicable.

45

Item 6 -Exhibits

EXHIBIT INDEX

_____________

Exhibit No.    Description

3.1.1    Amended and Restated Articles of Organization of the Company, as amended as of June 4, 2013 incorporated by reference to the Company's Current Report on Form 8-K filed June 10, 2013 (File No. 001-33912).

3.1.2    Articles of Amendment to the Restated Articles of Organization of the Company, as amended as of May 16, 2017 incorporated by reference to the Company's Current Report on Form 8-K filed May 18, 2017 (File No. 001-33912).

3.1.3    Articles of Amendment to the Amended and Restated Articles of Organization of the Company, as amended as of January 5, 2018, incorporated by reference to the Company's Current Report on Form 8-K filed January 11, 2018 (File No. 001-33912).

3.2    Second Amended and Restated Bylaws of the Company, as amended as of January 19, 2021, incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed on January 22, 2021 (File No. 001-33912).

10.1     Enterprise Bank 2023 Variable Compensation Incentive Plan, incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed March 24, 2023 (File No. 001-33912).

10.2     Enterprise Bank Supplemental Executive Retirement and Deferred Compensation Plan 2023 Addendum, incorporated by reference to Exhibit 10.2 to the Company's Current Report on Form 8-K filed March 24, 2023 (File No. 001-33912).

31.1*    Certification of Principal Executive Officer under Securities Exchange Act Rule 13a-14(a).

31.2*    Certification of Principal Financial Officer under Securities Exchange Act Rule 13a-14(a).

32*    Certification of Principal Executive Officer and Principal Financial Officer under 18 U.S.C. § 1350 Furnished Pursuant to Securities Exchange Act Rule 13a-14(b).

101*    The following materials from Enterprise Bancorp, Inc.'s Quarterly Report on Form 10-Q for the quarter ended March 31, 2023 were formatted in Inline XBRL (eXtensible Business Reporting Language): (i) Consolidated Balance Sheets as of March 31, 2023 and December 31, 2022; (ii) Consolidated Statements of Income for the three months ended March 31, 2023 and 2022; (iii) Consolidated Statements of Comprehensive Income for the three months ended March 31, 2023 and 2022; (iv) Consolidated Statements of Changes in Equity for the three months ended March 31, 2023 and 2022; (v) Consolidated Statements of Cash Flows for the three months ended March 31, 2023 and 2022; and (vi) Notes to Unaudited Consolidated Interim Financial Statements.

104*     The cover page from the Company's Quarterly Report on Form 10-Q for the quarter ended March 31, 2023 has been formatted in Inline XBRL and contained in Exhibit 101.

____________________

*Filed herewith

46

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.

		ENTERPRISE BANCORP, INC.
DATE:	May 9, 2023	By:	/s/ Joseph R. Lussier
			Joseph R. Lussier
			Executive Vice President, Treasurer
			and Chief Financial Officer

47

EX-31.1

EXHIBIT 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

UNDER SECURITIES EXCHANGE ACT RULE 13a-14(a)

I, John P. Clancy, Jr., certify that:

1.I have reviewed this quarterly report on Form 10-Q of Enterprise Bancorp, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and we have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:	May 9, 2023	/s/ John P. Clancy, Jr.
		John P. Clancy, Jr.
		Chief Executive Officer (Principal Executive Officer)

EX-31.2

EXHIBIT 31.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

UNDER SECURITIES EXCHANGE ACT RULE 13a-14(a)

I, Joseph R. Lussier, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Enterprise Bancorp, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and we have:

a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:	May 9, 2023	/s/ Joseph R. Lussier
		Joseph R. Lussier
		Executive Vice President, Chief Financial Officer and Treasurer, (Principal Financial Officer)

EX-32

EXHIBIT 32

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER AND PRINCIPAL FINANCIAL OFFICER

UNDER 18 U.S.C. § 1350 FURNISHED PURSUANT TO SECURITIES EXCHANGE ACT RULE 13a-14(b)

In connection with the Quarterly Report of Enterprise Bancorp, Inc. (the "Company") on Form 10-Q for the period ended on March 31, 2023, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), each of the undersigned, in his respective capacities indicated below, hereby certifies, pursuant to 18 U.S.C. § 1350, as enacted by Section 906 of the Sarbanes-Oxley Act of 2002, that, to his knowledge and belief, (1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and (2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 9, 2023

/s/ John P. Clancy, Jr.

John P. Clancy, Jr.

Chief Executive Officer (Principal Executive Officer)

/s/ Joseph R. Lussier

Joseph R. Lussier

Executive Vice President, Chief Financial Officer and Treasurer (Principal Financial Officer)

A signed original of this written statement required by Section 906 has been provided to Enterprise Bancorp, Inc. and will be retained by Enterprise Bancorp, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

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Cover - shares	3 Months Ended
	Mar. 31, 2023	Apr. 28, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2023
Document Transition Report	false
Entity File Number	001-33912
Entity Registrant Name	Enterprise Bancorp, Inc.
Entity Incorporation, State or Country Code	MA
Entity Tax Identification Number	04-3308902
Entity Address, Address Line One	222 Merrimack Street,
Entity Address, City or Town	Lowell,
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	01852
City Area Code	(978)
Local Phone Number	459-9000
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	EBTC
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		12,221,905
Entity Central Index Key	0001018399
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Amendment Flag	false

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Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Cash and cash equivalents:
Cash and due from banks	$ 42,843	$ 36,901
Interest-earning deposits with banks	172,850	230,688
Total cash and cash equivalents	215,693	267,589
Investments:
Debt securities at fair value (amortized cost of $923,485 and $940,227, respectively)	825,520	816,102
Equity securities at fair value	5,375	4,269
Total investment securities at fair value	830,895	820,371
Federal Home Loan Bank ("FHLB") stock	2,343	2,343
Loans held for sale	362	0
Loans:
Total loans	3,230,156	3,180,518
Allowance for credit losses	(55,002)	(52,640)
Net loans	3,175,154	3,127,878
Premises and equipment, net	43,821	44,228
Lease right-of-use asset	24,751	24,923
Accrued interest receivable	18,540	17,117
Deferred income taxes, net	44,432	51,981
Bank-owned life insurance	64,463	64,156
Prepaid income taxes	3,636	683
Prepaid expenses and other assets	12,150	11,408
Goodwill	5,656	5,656
Total assets	4,441,896	4,438,333
Liabilities
Deposits	4,016,156	4,035,806
Borrowed funds	3,199	3,216
Subordinated debt	59,261	59,182
Lease liability	24,285	24,415
Accrued expenses and other liabilities	25,737	31,442
Accrued interest payable	1,940	2,005
Total liabilities	4,130,578	4,156,066
Commitments and Contingencies
Shareholders' Equity
Preferred stock, $0.01 par value per share; 1,000,000 shares authorized; no shares issued	0	0
Common stock, $0.01 par value per share; 40,000,000 shares authorized; 12,222,717 and 12,133,516 shares issued and outstanding, respectively	122	121
Additional paid-in capital	104,621	103,793
Retained earnings	282,534	274,560
Accumulated other comprehensive loss	(75,959)	(96,207)
Total shareholders' equity	311,318	282,267
Total liabilities and shareholders' equity	$ 4,441,896	$ 4,438,333

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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Debt securities, amortized cost	$ 923,485	$ 940,227
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	12,222,717	12,133,516
Common stock, outstanding (in shares)	12,222,717	12,133,516

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Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Interest and dividend income:
Loans and loans held for sale	$ 39,556	$ 30,695
Investment securities	5,073	4,588
Other interest-earning assets	2,208	181
Total interest and dividend income	46,837	35,464
Interest expense:
Deposits	5,987	600
Borrowed funds	12	13
Subordinated debt	867	818
Total interest expense	6,866	1,431
Net interest income	39,971	34,033
Provision for credit losses	2,736	530
Net interest income after provision for credit losses	37,235	33,503
Non-interest income:
Wealth management fees	1,587	1,729
Deposit and interchange fees	2,048	1,802
Income on bank-owned life insurance, net	307	295
Net gains on sales of debt securities	0	1,062
Net gains on sales of loans	14	22
Loss on equity securities	(16)	(67)
Other income	817	752
Total non-interest income	4,757	5,595
Non-interest expense:
Salaries and employee benefits	18,521	16,792
Occupancy and equipment expenses	2,501	2,415
Technology and telecommunications expenses	2,675	2,636
Advertising and public relations expenses	681	667
Audit, legal and other professional fees	640	710
Deposit insurance premiums	675	556
Supplies and postage expenses	255	220
Other operating expenses	2,092	1,761
Total non-interest expense	28,040	25,757
Income before income taxes	13,952	13,341
Provision for income taxes	3,184	3,054
Net income	$ 10,768	$ 10,287
Basic earnings per share (in dollars per share)	$ 0.89	$ 0.85
Diluted earnings per share (in dollars per share)	$ 0.88	$ 0.85
Basic weighted average common shares outstanding (in shares)	12,155,320	12,055,991
Diluted weighted average common shares outstanding (in shares)	12,193,756	12,119,836

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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 10,768	$ 10,287
Other comprehensive income (loss), net of tax
Net change in fair value of debt securities	20,248	(44,962)
Total other comprehensive income (loss), net of tax	20,248	(44,962)
Total comprehensive income (loss), net	$ 31,016	$ (34,675)

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Consolidated Statement of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2021		12,038,382
Balance, beginning at Dec. 31, 2021	$ 346,895	$ 120	$ 100,352	$ 241,761	$ 4,662
Increase (Decrease) in Stockholders' Equity
Net income	10,287			10,287
Other comprehensive income, net	(44,962)				(44,962)
Common stock dividend declared	(2,469)			(2,469)
Common stock issued under dividend reinvestment plan (in shares)		8,915
Common stock issued under dividend reinvestment plan	346	$ 0	346
Common stock issued, other (in shares)		241
Common stock issued, other	10	$ 0	10
Stock-based compensation, net (in shares)		59,949
Stock-based compensation, net	660	$ 1	659
Net settlement for employee taxes on restricted stock and options (in shares)		(7,728)
Net settlement for employee taxes on restricted stock and options	(286)	$ 0	(286)
Stock options exercised, net (in shares)		3,429
Stock options exercised, net	58	$ 0	58
Ending balance (in shares) at Mar. 31, 2022		12,103,188
Balance, ending at Mar. 31, 2022	$ 310,539	$ 121	101,139	249,579	(40,300)
Beginning balance (in shares) at Dec. 31, 2022	12,133,516	12,133,516
Balance, beginning at Dec. 31, 2022	$ 282,267	$ 121	103,793	274,560	(96,207)
Increase (Decrease) in Stockholders' Equity
Net income	10,768			10,768
Other comprehensive income, net	20,248				20,248
Common stock dividend declared	(2,794)			(2,794)
Common stock issued under dividend reinvestment plan (in shares)		10,395
Common stock issued under dividend reinvestment plan	370	$ 0	370
Common stock issued, other (in shares)		207
Common stock issued, other	7	$ 0	7
Stock-based compensation, net (in shares)		70,943
Stock-based compensation, net	711	$ 1	710
Net settlement for employee taxes on restricted stock and options (in shares)		(5,954)
Net settlement for employee taxes on restricted stock and options	(348)	$ 0	(348)
Stock options exercised, net (in shares)		13,610
Stock options exercised, net	$ 89	$ 0	89
Ending balance (in shares) at Mar. 31, 2023	12,222,717	12,222,717
Balance, ending at Mar. 31, 2023	$ 311,318	$ 122	$ 104,621	$ 282,534	$ (75,959)

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Consolidated Statement of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Stockholders' Equity [Abstract]
Common stock dividends declared (in usd per share)	$ 0.230	$ 0.205

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net income	$ 10,768	$ 10,287
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for credit losses	2,736	530
Depreciation and amortization	1,660	1,733
Stock-based compensation expense	522	478
Income on bank-owned life insurance, net	(307)	(295)
Net gains on sales of debt securities	0	(1,062)
Mortgage loans originated for sale	(1,188)	(819)
Proceeds from mortgage loans sold	840	841
Net gains on sales of loans	(14)	(22)
Net loss on equity securities	16	67
Changes in:
Net increase in other assets	(3,597)	(6,124)
Net decrease in other liabilities	(5,762)	(8,879)
Net cash provided by (used in) operating activities	5,674	(3,265)
Cash flows from investing activities:
Proceeds from sales of debt securities	0	32,715
Purchase of debt securities	0	(66,833)
Proceeds from maturities, calls and pay-downs of debt securities	16,433	26,067
Net purchases of equity securities	(1,122)	(1,243)
Net purchases of FHLB capital stock	0	116
Net increase in loans	(49,594)	(42,142)
Additions to premises and equipment, net	(944)	(1,719)
Net cash used in investing activities	(35,227)	(53,039)
Cash flows from financing activities:
Net (decrease) increase in deposits	(19,650)	54,261
Net decrease in borrowed funds	(17)	(2,505)
Cash dividends paid, net of dividend reinvestment plan	(2,424)	(2,123)
Proceeds from issuance of common stock	7	10
Net settlement for employee taxes on restricted stock and options	(348)	(286)
Net proceeds from stock option exercises	89	58
Net cash (used in) provided by financing activities	(22,343)	49,415
Net decrease in cash and cash equivalents	(51,896)	(6,889)
Cash and cash equivalents at beginning of period	267,589	436,576
Cash and cash equivalents at end of period	$ 215,693	$ 429,687

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Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2023

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

(a) Organization of the Company and Basis of Presentation

The accompanying unaudited consolidated interim financial statements and these notes should be read in conjunction with the December 31, 2022 audited consolidated financial statements and notes thereto contained in the Annual Report on Form 10-K of Enterprise Bancorp, Inc. (the "Company," "Enterprise," "we," or "our") for the year ended December 31, 2022 (the "2022 Annual Report on Form 10-K") as filed with the Securities and Exchange Commission (the "SEC") on March 8, 2023. The Company has not materially changed its significant accounting policies from those disclosed in its 2022 Annual Report on Form 10-K. See Item (d), "Recent Accounting Pronouncements," below in this Note 1.

The accompanying unaudited consolidated interim financial statements of the Company include the accounts of the Company and its wholly owned subsidiary, Enterprise Bank and Trust Company, commonly referred to as Enterprise Bank (the "Bank"). The Bank is a Massachusetts trust company and state chartered commercial bank organized in 1989. Substantially all of the Company's operations are conducted through the Bank and its subsidiaries.

The Bank's subsidiaries include Enterprise Insurance Services, LLC and Enterprise Wealth Services, LLC, both organized under the laws of the State of Delaware, to engage in insurance sales activities and offer non-deposit investment products and services, respectively. In addition, the Bank has the following subsidiaries that are incorporated in the Commonwealth of Massachusetts and classified as security corporations in accordance with applicable Massachusetts General Laws: Enterprise Security Corporation; Enterprise Security Corporation II; and Enterprise Security Corporation III. The security corporations, which hold various types of qualifying securities, are limited to conducting investment activities that the Bank itself would be allowed to conduct under applicable laws. In February 2023, the Bank organized the EBTC NMTC Investment Fund - CHC, LLC (the "NMTC Investment Fund") under the laws of the State of Delaware, in conjunction with the Banks investment in a qualifying New Market Tax Credit ("NMTC") project. The NMTC Investment Fund is the Company's only unconsolidated Variable Interest Entity ("VIE"). The services offered through the Bank and its subsidiaries are managed as one strategic unit and represent the Company's only reportable operating segment.

The accompanying unaudited consolidated interim financial statements, and notes thereto, in this Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2023 (this "Form 10-Q"), have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and the SEC instructions for Quarterly Reports on Form 10-Q. In the opinion of management, the accompanying unaudited consolidated interim financial statements reflect all necessary adjustments, consisting of normal recurring accruals and elimination of intercompany balances, for a fair presentation. Interim results are not necessarily indicative of results to be expected for the entire year, or any future period.

(b) Uses of Estimates

In preparing the unaudited consolidated interim financial statements in conformity with GAAP, management is required to exercise judgment in determining many of the methodologies, assumptions and estimates to be utilized. These assumptions and estimates affect the reported values of assets and liabilities as of the balance sheet dates and income and expenses for the period then ended. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates should the assumptions and estimates used be incorrect or change over time due to changes in circumstances. Changes in those estimates resulting from continuing changes in the economic environment and other factors will be reflected in the consolidated financial statements and results of operations in future periods.

As discussed in the Company's 2022 Annual Report on Form 10-K, the most significant areas in which management applies critical assumptions and estimates are: the estimates of the allowance for credit losses ("ACL") for loans, available for sale securities and reserve for unfunded commitments, and the impairment review of goodwill. Refer to Note 1, "Summary of Significant Accounting Policies," to the Company's audited consolidated financial statements included in the Company's 2022 Annual Report on Form 10-K for accounting policies related to these significant estimates.

(c) Unconsolidated Variable Interest Entity / Proportional Accounting

In March 2023, the Bank made an equity contribution to the NMTC Investment Fund a newly formed Limited Liability Company in order to invest in NMTC, a program, which is administered by the U.S. Department of the Treasury's Community Development Financial Institutions Fund and allocated to Community Development Entities ("CDE").

The NMTC program provides federal tax incentives for investments in distressed communities and promotes economic improvements through the development of successful businesses in these communities. The NMTCs are available to investors

over a seven-year period and are subject to recapture if certain events occur during such period. The Bank invested $3.7 million in the Investment Fund and anticipates receiving $4.8 million of federal tax credits over the next seven years (5% in each of the first three years, and 6% in each of the next four years). The underlying project is structured through a qualified CDE, which in turn has made loans to a qualified active low-income business. The Bank has no unfunded commitments associated with its NMTC investment. The Company has elected to account for the tax equity investment, using the proportional amortization method. Under this method the NMTC Investment Fund is not consolidated with the Company and instead, the initial cost of the investment is amortized in proportion to the amount of tax credits and other tax benefits received over the allotment period. The investment is carried within the line "Prepaid expenses and other assets" on the Company's Consolidated Balance Sheet and the investment amortization expense and tax credits are presented on a net basis within the line "Provision for income taxes" on the Company's Consolidated Statements of Income. During the three months ended March 31, 2023, the related amortization expense and tax credits amounted to $44 thousand and $153 thousand, respectively.

(d) Recent Accounting Pronouncements

Accounting pronouncements adopted by the Company

In March 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2023-02, "Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method." ASU 2023-02 permits reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. The election can be made for each individual qualifying tax credit investment. Under the proportional amortization method, the initial cost of an investment is amortized in proportion to the amount of tax credits and other tax benefits received, with the amortization and tax credits recognized as a component of income tax expense. To qualify for the proportional amortization method, all of the following conditions must be met: (1) It is probable that the income tax credits allocated to the tax equity investor will be available; (2) The tax equity investor does not have the ability to exercise significant influence over the operating and financial policies of the underlying project; (3) Substantially all of the projected benefits are from income tax credits and other income tax benefits; (4) The tax equity investor's projected yield based solely on the cash flows from the income tax credits and other income tax benefits is positive; and (5) The tax equity investor is a limited liability investor in the limited liability entity for both legal and tax purposes, and the tax equity investor's liability is limited to its capital investment. Under the proportional amortization method, the investment shall be tested for impairment when events or changes in circumstances indicate that it is more likely than not that the carrying amount of the investment will not be realized. An impairment loss shall be measured as the amount by which the carrying amount of an investment exceeds its fair value. A previously recognized impairment loss shall not be reversed. ASU 2023-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2023. The Company has elected to early adopt ASU 2022-01 effective on January 1, 2023, applying the new guidance to a new investment in NMTC made in the first quarter of 2023, and the adoption did not have a significant impact on the financial statements.

In March 2022, the FASB issued ASU 2022-01, "Derivatives and Hedging (Topic 815): Fair Value Hedging—Portfolio Layer Method." This ASU clarifies the guidance on fair value hedge accounting of interest rate risk for portfolios of financial assets. The ASU amends the guidance in ASU 2017-12, "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities," that, among other things, established the "last-of-layer" method for making the fair value hedge accounting for these portfolios more accessible. ASU 2022-01 renames that method the "portfolio layer" method and addresses feedback from stakeholders regarding its application. The Company adopted ASU 2022-01 effective on January 1, 2023 and the adoption did not have a significant impact on the financial statements.

In March 2022, the FASB issued ASU 2022-02, "Financial Instruments—Credit Losses (Topic 326), Troubled Debt Restructurings and Vintage Disclosures." This ASU eliminates the accounting guidance for troubled debt restructurings by creditors that have adopted the current expected credit loss ("CECL") methodology for estimating allowances for credit losses and enhances the disclosure requirements for loan restructurings made with borrowers experiencing financial difficulty. In addition, the amendments require a public business entity to disclose current-period gross charge-offs for financing receivables and net investment in leases by year of origination in the vintage disclosures. The Company adopted ASU 2022-02 effective on January 1, 2023, prospectively, and the adoption did not have a significant impact on the financial statements.

(e) Subsequent Events

The Company has evaluated subsequent events and transactions from March 31, 2023 through the date this Form 10-Q was filed with the SEC for potential recognition or disclosure as required by GAAP and determined there were no material subsequent events requiring recognition or disclosure.

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Investment Securities

3 Months Ended

Mar. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Investment Securities

Investment Securities

Debt Securities

All of the Company's debt securities were classified as available-for-sale and carried at fair value as of the dates specified in the tables below. The amortized cost and fair values of debt securities at the dates specified are summarized as follows:

	March 31, 2023
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Federal agency obligations	$	5,012	$	1	$	—	$	5,013
U.S. treasury securities	45,955		—		2,045		43,910
Federal agency collateralized mortgage obligations ("CMO")	461,436		203		54,796		406,843
Federal agency mortgage-backed securities ("MBS")	23,892		64		2,776		21,180
Taxable municipal securities	287,421		36		37,173		250,284
Tax-exempt municipal securities	82,182		246		485		81,943
Corporate bonds	5,636		—		109		5,527
Subordinated corporate bonds	11,951		—		1,131		10,820
Total debt securities, at fair value	$	923,485	$	550	$	98,515	$	825,520

	December 31, 2022
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Federal agency obligations	$	5,014	$	—	$	37	$	4,977
U.S. treasury securities	45,942		—		2,691		43,251
Federal agency CMO	474,777		3		67,798		406,982
Federal agency MBS	24,172		27		3,178		21,021
Taxable municipal securities	287,435		29		48,187		239,277
Tax-exempt municipal securities	84,457		66		870		83,653
Corporate bonds	6,480		—		186		6,294
Subordinated corporate bonds	11,950		—		1,303		10,647
Total debt securities, at fair value	$	940,227	$	125	$	124,250	$	816,102

At March 31, 2023, management performed its quarterly analysis of all securities with unrealized losses and determined that the losses were primarily attributable to significant increases in market interest rates experienced during the last twelve months. Management concluded that no ACL for available-for-sale securities was necessary as of March 31, 2023 and anticipates they will mature or be called at par value.

Accrued interest receivable on available-for-sale debt securities, included in the "Accrued Interest Receivable" line item on the Company's Consolidated Balance Sheets, amounted to $4.8 million and $4.0 million at March 31, 2023 and December 31, 2022, respectively.

The following tables summarize the duration of unrealized losses for debt securities at March 31, 2023 and December 31, 2022:

	March 31, 2023
	Less than 12 months				12 months or longer				Total
(Dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		# of Holdings
U.S. treasury securities	$	—	$	—	$	43,910	$	2,045	$	43,910	$	2,045	6
Federal agency CMO	46,380		844		335,270		53,952		381,650		54,796		98
Federal agency MBS	—		—		19,217		2,776		19,217		2,776		11
Taxable municipal securities	20,486		729		226,761		36,444		247,247		37,173		272
Tax-exempt municipal securities	31,239		155		9,801		330		41,040		485		80
Corporate bonds	4,857		82		670		27		5,527		109		25
Subordinated corporate bonds	1,886		66		8,935		1,065		10,821		1,131		6
Total	$	104,848	$	1,876	$	644,564	$	96,639	$	749,412	$	98,515	498

	December 31, 2022
	Less than 12 months				12 months or longer				Total
(Dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		# of Holdings
Federal agency obligations	$	4,977	$	37	$	—	$	—	$	4,977	$	37	1
U.S. treasury securities	2,878		109		40,374		2,582		43,252		2,691		6
Federal agency CMO	164,391		13,004		233,051		54,794		397,442		67,798		102
Federal agency MBS	9,923		797		9,165		2,381		19,088		3,178		11
Taxable municipal securities	93,345		10,411		144,903		37,776		238,248		48,187		273
Tax-exempt municipal securities	66,277		870		—		—		66,277		870		112
Corporate bonds	6,294		186		—		—		6,294		186		31
Subordinated corporate bonds	6,206		743		4,440		560		10,646		1,303		6
Total	$	354,291	$	26,157	$	431,933	$	98,093	$	786,224	$	124,250	542

The contractual maturity distribution at March 31, 2023 of debt securities was as follows:    

(Dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	43,577	$	42,648
Due after one, but within five years	137,025		133,624
Due after five, but within ten years	304,972		267,490
Due after ten years	437,911		381,758
Total debt securities	$	923,485	$	825,520

Scheduled contractual maturities shown above may not reflect the actual maturities of the investments. The actual MBS/CMO cash flows likely will be faster than presented above due to prepayments and amortization. Similarly, included in the table above are callable securities, comprised of municipal securities and corporate bonds, with a fair value of $162.1 million, which can be redeemed by the issuers prior to the maturity presented above. Management considers these factors when evaluating the interest-rate risk in the Company's asset-liability management program.

From time to time, the Company may pledge debt securities as collateral for deposit account balances of municipal customers, and for borrowing capacity with the FHLB and the Federal Reserve Bank of Boston ("FRB"). The fair value of debt securities pledged as collateral for these purposes was $814.7 million and $804.2 million at March 31, 2023 and December 31, 2022, respectively.

Sales of debt securities for the three months ended March 31, 2023 and March 31, 2022 are summarized as follows:     

	Three months ended March 31,
(Dollars in thousands)	2023		2022
Amortized cost of debt securities sold (1)	$	—	$	31,653
Gross realized gains on sales	—		1,062
Gross realized losses on sales	—		—
Total proceeds from sales of debt securities	$	—	$	32,715

_________________________________________

(1)Amortized cost of investments sold is determined on a specific identification basis and includes pending trades based on trade date, if applicable.

Equity Securities

The Company held equity securities with a fair value of $5.4 million at March 31, 2023 and $4.3 million at December 31, 2022. At March 31, 2023, the equity portfolio consisted of investments in broad-based equity index funds and common stock of entities in the financial services industry. The equity portfolio also included mutual funds held in conjunction with the Company's supplemental executive retirement and deferred compensation plan.

Gains and losses on equity securities for the three months ended March 31, 2023 and March 31, 2022 are summarized as follows:

	Three months ended March 31,
(Dollars in thousands)	2023		2022
Net losses recognized during the period on equity securities	$	(16)	$	(67)
Less: Net gains recognized on equity securities sold during the period	—		—
Unrealized losses recognized during the reporting period on equity securities still held at the end of the period	$	(16)	$	(67)

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Loans

3 Months Ended

Mar. 31, 2023

Receivables [Abstract]

Loans

Loans

Loan Portfolio Classifications

Major classifications of loans and their amortized cost as of the dates indicated were as follows:

(Dollars in thousands)	March 31, 2023		December 31, 2022
Commercial real estate	$	1,929,544	$	1,921,410
Commercial and industrial	423,864		414,490
Commercial construction	456,735		424,049
Total commercial loans	2,810,143		2,759,949
Residential mortgages	335,834		332,632
Home equity loans and lines	75,809		79,807
Consumer	8,370		8,130
Total retail loans	420,013		420,569
Total loans	3,230,156		3,180,518
ACL for loans	(55,002)		(52,640)
Net loans	$	3,175,154	$	3,127,878

Net deferred loan origination fees, included in the amortized costs of loans reflected in the table above, amounted to $5.1 million at March 31, 2023 and $5.2 million at December 31, 2022. Accrued interest receivable on loans amounted to $13.7 million and $13.1 million at March 31, 2023 and December 31, 2022, respectively, and was included in the "Accrued interest receivable" line item on the Company's Consolidated Balance Sheets.

Commercial loans originated by other banks in which the Company is a participating institution are carried at the pro-rata share of ownership and amounted to $101.7 million at March 31, 2023 and $94.8 million at December 31, 2022. See also "Loans serviced for others" below for information related to commercial loans participated out to various other institutions.

Loans serviced for others

At March 31, 2023 and December 31, 2022, the Company was servicing residential mortgage loans owned by investors amounting to $8.7 million and $8.9 million, respectively. Additionally, the Company was servicing commercial loans originated by the Company and participated out to various other institutions amounting to $58.3 million and $59.1 million at March 31, 2023 and December 31, 2022, respectively.

Loans serving as collateral

Loans designated as qualified collateral and pledged to the FHLB for borrowing capacity as of the dates indicated are summarized below:

(Dollars in thousands)	March 31, 2023		December 31, 2022
Commercial real estate	$	393,513	$	113,830
Residential mortgages	314,595		309,023
Home equity	33,971		39,724
Total loans pledged to FHLB	$	742,079	$	462,577

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ACL for Loans

3 Months Ended

Mar. 31, 2023

Receivables [Abstract]

ACL for Loans

ACL for Loans

There have been no material changes to the Company's ACL for loans methodology, underwriting practices, or credit risk management system used to estimate credit loss exposure since December 31, 2022. See Note 4, "ACL for Loans," to the Company's audited consolidated financial statements contained in the 2022 Annual Report on Form 10-K. 

Risk ratings and adversely classified loans

The Company's loan risk rating system classifies loans depending on risk of loss characteristics. Adversely classified ratings for loans determined to be of weaker credit range from "special mention," for loans that may need additional monitoring, to the more severe adverse classifications of "substandard," "doubtful," and "loss" based on criteria established under banking regulations.

The following tables present the amortized cost basis of the Company's loan portfolio risk ratings within portfolio classifications, by origination date, or revolving status as of the dates indicated:

	Balance at March 31, 2023
	Term Loans by Origination Year
(Dollars in thousands)	2023		2022		2021		2020		2019		Prior		Revolving Loans		Revolving Loans Converted to Term		Total
Commercial real estate
Pass	$	32,192	$	389,368	$	375,042	$	200,608	$	220,511	$	677,333	$	1,315	$	—	$	1,896,369
Special mention	—		—		—		—		503		19,068		—		—		19,571
Substandard	—		—		280		—		1,014		12,310		—		—		13,604
Total commercial real estate	32,192		389,368		375,322		200,608		222,028		708,711		1,315		—		1,929,544
Current period charge-offs	—		—		—		—		—		—		—		—		—
Commercial and industrial
Pass	18,135		62,802		53,038		31,245		27,351		53,141		170,851		976		417,539
Special mention	—		—		—		—		—		282		2,192		925		3,399
Substandard	—		—		19		—		7		602		2,298		—		2,926
Total commercial and industrial	18,135		62,802		53,057		31,245		27,358		54,025		175,341		1,901		423,864
Current period charge-offs	5		6		—		—		—		72		—		—		83
Commercial construction
Pass	22,313		162,026		182,219		33,775		23,818		7,533		21,053		—		452,737
Special mention	—		—		—		—		3,998		—		—		—		3,998
Total commercial construction	22,313		162,026		182,219		33,775		27,816		7,533		21,053		—		456,735
Current period charge-offs	—		—		—		—		—		—		—		—		—
Residential mortgages
Pass	6,516		113,213		72,701		48,817		19,705		72,358		—		—		333,310
Special mention	—		—		—		—		—		113		—		—		113
Substandard	—		—		—		—		1,055		1,356		—		—		2,411
Total residential mortgages	6,516		113,213		72,701		48,817		20,760		73,827		—		—		335,834
Current period charge-offs	—		—		—		—		—		—		—		—		—
Home equity
Pass	—		421		588		453		338		2,152		71,443		46		75,441
Substandard	—		—		273		—		—		95		—		—		368
Total home equity	—		421		861		453		338		2,247		71,443		46		75,809
Current period charge-offs	—		—		—		—		—		—		—		—		—
Consumer
Pass	652		3,257		1,705		977		933		846		—		—		8,370
Total consumer	652		3,257		1,705		977		933		846		—		—		8,370
Current period charge-offs	1		5		—		—		—		—		—		—		6
Total loans	$	79,808	$	731,087	$	685,865	$	315,875	$	299,233	$	847,189	$	269,152	$	1,947	$	3,230,156
Total current period charge-offs	$	6	$	11	$	—	$	—	$	—	$	72	$	—	$	—	$	89

	Balance at December 31, 2022
	Term Loans by Origination Year
(Dollars in thousands)	2021		2020		2019		2018		2017		Prior		Revolving Loans		Revolving Loans Converted to Term		Total
Commercial real estate
Pass	$	391,515	$	381,771	$	204,125	$	218,664	$	114,175	$	577,354	$	1,347	$	200	$	1,889,151
Special mention	—		—		—		507		2,041		16,248		—		—		18,796
Substandard	—		289		—		1,160		1,404		10,610		—		—		13,463
Total commercial real estate	391,515		382,060		204,125		220,331		117,620		604,212		1,347		200		1,921,410
Commercial and industrial
Pass	59,824		53,059		33,027		29,293		13,364		43,724		171,670		3,235		407,196
Special mention	—		—		—		11		66		278		3,132		—		3,487
Substandard	—		19		—		8		138		325		2,964		353		3,807
Total commercial and industrial	59,824		53,078		33,027		29,312		13,568		44,327		177,766		3,588		414,490
Commercial construction
Pass	151,107		169,549		35,651		31,189		7,729		3,379		19,778		1,473		419,855
Special mention	—		—		—		3,900		—		—		—		—		3,900
Substandard	—		294		—		—		—		—		—		—		294
Total commercial construction	151,107		169,843		35,651		35,089		7,729		3,379		19,778		1,473		424,049
Residential mortgages
Pass	112,804		73,955		49,549		20,140		18,799		54,620		—		—		329,867
Special mention	—		—		—		—		—		325		—		—		325
Substandard	—		—		—		1,060		—		1,380		—		—		2,440
Total residential mortgages	112,804		73,955		49,549		21,200		18,799		56,325		—		—		332,632
Home equity
Pass	328		596		456		345		—		1,220		75,324		1,054		79,323
Substandard	—		273		—		—		—		211		—		—		484
Total home equity	328		869		456		345		—		1,431		75,324		1,054		79,807
Consumer
Pass	3,144		1,852		1,063		1,045		606		420		—		—		8,130
Total consumer	3,144		1,852		1,063		1,045		606		420		—		—		8,130
Total loans	$	718,722	$	681,657	$	323,871	$	307,322	$	158,322	$	710,094	$	274,215	$	6,315	$	3,180,518

The total amortized cost basis of adversely classified loans amounted to $46.4 million, or 1.44% of total loans, at March 31, 2023, and $47.0 million, or 1.48% of total loans, at December 31, 2022.

Past due and non-accrual loans

The following tables present an age analysis of past due loans by portfolio classification as of the dates indicated:

	Balance at March 31, 2023
(Dollars in thousands)	30-59 Days Past Due		60-89 Days Past Due		Past Due 90 Days or More		Total Past Due Loans(1)		Current  Loans(1)		Total Loans
Commercial real estate	$	2,589	$	384	$	2,091	$	5,064	$	1,924,480	$	1,929,544
Commercial and industrial	206		601		78		885		422,979		423,864
Commercial construction	—		—		—		—		456,735		456,735
Residential mortgages	431		1,055		—		1,486		334,348		335,834
Home equity	119		—		73		192		75,617		75,809
Consumer	14		45		—		59		8,311		8,370
Total loans	$	3,359	$	2,085	$	2,242	$	7,686	$	3,222,470	$	3,230,156

	Balance at December 31, 2022
(Dollars in thousands)	30-59 Days Past Due		60-89 Days Past Due		Past Due 90 Days or More		Total Past Due Loans(1)		Current  Loans(1)		Total Loans
Commercial real estate	$	2,818	$	1,268	$	1,631	$	5,717	$	1,915,693	$	1,921,410
Commercial and industrial	786		39		217		1,042		413,448		414,490
Commercial construction	412		—		294		706		423,343		424,049
Residential mortgages	1,119		55		149		1,323		331,309		332,632
Home equity	163		—		73		236		79,571		79,807
Consumer	21		—		—		21		8,109		8,130
Total loans	$	5,319	$	1,362	$	2,364	$	9,045	$	3,171,473	$	3,180,518

_______________________________________

(1)The loan balances in the tables above include loans designated as non-accrual according to their payment due status.

At March 31, 2023 and December 31, 2022, all loans past due 90 days or more were carried as non-accrual, however, not all non-accrual loans were 90 days or more past due in their payments. Loans that were less than 90 days past due where reasonable doubt existed as to the full and timely collection of interest or principal have also been designated as non-accrual, despite their payment due status.

The following tables present the amortized cost of non-accrual loans by portfolio classification as of the dates indicated:

	Balance at March 31, 2023
(Dollars in thousands)	Total Non-accrual Loans		Non-accrual Loans without a Specific Reserve		Non-accrual Loans with a Specific Reserve		Related Specific Reserve
Commercial real estate	$	4,926	$	3,912	$	1,014	$	274
Commercial and industrial	673		325		348		309
Commercial construction	—		—		—		—
Residential mortgages	1,565		1,565		—		—
Home equity	368		95		273		85
Consumer	—		—		—		—
Total loans	$	7,532	$	5,897	$	1,635	$	668

	Balance at December 31, 2022
(Dollars in thousands)	Total Non-accrual Loans		Non-accrual Loans without a Specific Reserve		Non-accrual Loans with a Specific Reserve		Related Specific Reserve
Commercial real estate	$	3,355	$	2,317	$	1,038	$	298
Commercial and industrial	730		348		382		382
Commercial construction	294		294		—		—
Residential mortgages	1,532		1,532		—		—
Home equity	211		211		—		—
Consumer	—		—		—		—
Total loans	$	6,122	$	4,702	$	1,420	$	680

The ratio of non-accrual loans to total loans amounted to 0.23% and 0.19% at March 31, 2023 and December 31, 2022, respectively.

At March 31, 2023 and December 31, 2022, additional funding commitments for non-accrual loans were not material.

Collateral dependent loans

The total recorded investment in collateral dependent loans amounted to $22.8 million at March 31, 2023 compared to $25.2 million at December 31, 2022. Total accruing collateral dependent loans amounted to $15.6 million while non-accrual collateral dependent loans amounted to $7.2 million as of March 31, 2023. As of December 31, 2022, total accruing collateral dependent loans amounted to $19.5 million, while non-accrual collateral dependent loans amounted to $5.7 million.

The following tables present the recorded investment in collateral dependent loans and the related specific allowance by portfolio allocation as of the dates indicated:

	Balance at March 31, 2023
(Dollars in thousands)	Unpaid Contractual Principal Balance		Total Recorded Investment in Collateral Dependent Loans		Recorded Investment without a Specific Reserve		Recorded Investment with a Specific Reserve		Related Specific Reserve
Commercial real estate	$	22,783	$	20,163	$	19,149	$	1,014	$	274
Commercial and industrial	2,867		562		524		38		12
Commercial construction	—		—		—		—		—
Residential mortgages	1,873		1,678		1,678		—		—
Home equity	435		368		95		273		85
Consumer	—		—		—		—		—
Total	$	27,958	$	22,771	$	21,446	$	1,325	$	371

	Balance at December 31, 2022
(Dollars in thousands)	Unpaid Contractual Principal Balance		Total Recorded Investment in Collateral Dependent Loans		Recorded Investment without a Specific Reserve		Recorded Investment with a Specific Reserve		Related Specific Reserve
Commercial real estate	$	24,530	$	21,916	$	20,878	$	1,038	$	298
Commercial and industrial	3,210		863		863		—		—
Commercial construction	294		294		294		—		—
Residential mortgages	2,096		1,914		1,914		—		—
Home equity	386		211		211		—		—
Consumer	—		—		—		—		—
Total	$	30,516	$	25,198	$	24,160	$	1,038	$	298

At March 31, 2023 and December 31, 2022, additional funding commitments for collateral dependent loans were not material.

Loan modifications to borrowers experiencing financial difficulty

Effective on January 1, 2023, the Company adopted ASU 2022-02, "Financial Instruments—Credit Losses (Topic 326), Troubled Debt Restructurings ("TDR") and Vintage Disclosures," which eliminated the accounting guidance for TDRs and enhanced the disclosure requirements for loan restructurings made with borrowers experiencing financial difficulty. The adoption did not have a significant impact on the financial statements.

The Company continues to work with loan customers and may enter into loan modifications to the extent deemed to be necessary or appropriate while attempting to achieve the best mutual outcome given the individual financial circumstances and future prospects of the borrower. An assessment of whether a borrower is experiencing financial difficulty is made on the date of the modification. Modifications made to borrowers experiencing financial difficulty may be concessions in the form of principal forgiveness, interest rate reductions, payment deferrals of principal, interest or both, or term extensions, or some combination thereof. When a debt has been previously modified, the Company considers the cumulative effect of modifications made within the prior twelve-month period before the current modification, when determining whether a delay in payment resulting from the current modification is insignificant, or not.

The following table presents the amortized cost basis of loan modifications made to borrowers experiencing financial difficulty by type of concession granted during the period indicated:

	Three months ended
	March 31, 2023
(Dollars in thousands)		Payment Deferrals		% of Loan Class Total
Commercial real estate		$	281	0.01	%
Commercial and industrial		38		0.01	%
Total		$	319	0.01	%

The following table presents the financial effect of loan modifications made to borrowers experiencing financial difficulty during the period indicated:

	Three months ended
	March 31, 2023
		Weighted-Average Payment Deferrals
Commercial real estate		0.5 years
Commercial and industrial		0.5 years

The Company closely monitors the performance of the loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. The following table presents the performance status of loans that had been modified within the preceding twelve months for borrowers experiencing financial difficulty, at the period indicated.

	Balance at March 31, 2023
(Dollars in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		Past Due 90 Days or More		Total Past Due
Commercial real estate	$	406	$	—	$	—	$	1,014	$	1,014
Commercial and industrial	237		—		—		—		—
Commercial construction	—		—		—		—		—
Residential mortgages	—		—		—		—		—
Home equity	—		—		—		—		—
Consumer	—		—		—		—		—
Total	$	643	$	—	$	—	$	1,014	$	1,014

During the three months ended March 31, 2023, there were no subsequent defaults on loans that had been modified within the preceding twelve months for borrowers experiencing financial difficulty, and at March 31, 2023, additional funding commitments to borrowers experiencing financial difficulty who were party to a loan modification were immaterial.

Prior-period troubled debt restructuring disclosures

Prior to adopting the new accounting standard on loan modifications, the Company accounted for modifications of loans to borrowers experiencing financial difficulty as TDRs, when the modification resulted in a concession and specific reserves were charged to the ACL if necessary for the amount of estimated credit loss. The following discussion reflects loans that were considered TDRs prior to January 1, 2023. For further information on the Company's TDR accounting policies, see Note 1, "Summary of Significant Accounting Policies," to the Company's audited consolidated financial statements contained in the 2022 Annual Report on Form 10-K. 

At March 31, 2022, additional funding commitments for TDR loans were immaterial.

The following table presents the number and balance of loans modified as TDRs, by portfolio classification, during the period indicated:

	Three months ended
	March 31, 2022
(Dollars in thousands)	Number of Restructurings	Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment
Commercial real estate	2	$	1,718	$	1,699
Total	2	$	1,718	$	1,699

There were no subsequent charge-offs associated with the TDRs noted in the table above during the three months ended March 31, 2022.

Payment defaults by portfolio classification, during the three months indicated, on loans modified as TDRs within the preceding twelve months are detailed below:

	Three months ended
	March 31, 2022
(Dollars in thousands)	Number of TDRs that Defaulted	Post-modification Outstanding Recorded Investment
Commercial and industrial	1	$	48
Total	1	$	48

The following table sets forth the post modification balances of TDRs listed by type of modification for TDRs that occurred during the three-month period indicated:

	Three months ended
	March 31, 2022
(Dollars in thousands)	Number of Restructurings	Amount
Temporary payment reduction and payment re-amortization of remaining principal over extended term	1	$	1,404
Temporary interest only payment plan	1	295
Total	2	$	1,699
Amount of ACL for loans associated with TDRs listed above		$	—

ACL for loans and provision for credit loss activity

The following table presents changes in the provision for credit losses on loans and unfunded commitments during the three-month periods indicated:

	Three months ended
(Dollars in thousands)	March 31, 2023		March 31, 2022
Provision for credit losses on loans	$	2,318	$	825
Provision for unfunded commitments	418		(295)
Total provision for credit losses	$	2,736	$	530

ACL for loans

The ACL for loans amounted to $55.0 million and $52.6 million at March 31, 2023 and December 31, 2022, respectively. The ACL for loans to total loans ratio was 1.70% and 1.66% at March 31, 2023 and December 31, 2022, respectively.

The following tables present changes in the ACL for loans by portfolio classification, during the three months indicated:

(Dollars in thousands)	Commercial Real Estate		Commercial and Industrial		Commercial Construction		Residential Mortgage		Home Equity		Consumer		Total
Beginning Balance at December 31, 2022	$	36,564	$	8,896	$	3,961	$	2,255	$	633	$	331	$	52,640
Provision for credit losses on loans	1,161		438		492		123		76		28		2,318
Recoveries	—		127		—		—		3		3		133
Less: Charge-offs	—		83		—		—		—		6		89
Ending Balance at March 31, 2023	$	37,725	$	9,378	$	4,453	$	2,378	$	712	$	356	$	55,002

(Dollars in thousands)	Commercial Real Estate		Commercial and Industrial		Commercial Construction		Residential Mortgage		Home Equity		Consumer		Total
Beginning Balance at December 31, 2021	$	31,847	$	9,574	$	4,090	$	1,405	$	465	$	323	$	47,704
Provision for credit losses on loans	2,089		(543)		(572)		(83)		(15)		(51)		825
Recoveries	—		24		—		—		4		5		33
Less: Charge-offs	—		105		—		—		—		33		138
Ending Balance at March 31, 2022	$	33,936	$	8,950	$	3,518	$	1,322	$	454	$	244	$	48,424

Reserve for unfunded commitments

The Company's reserve for unfunded commitments amounted to $4.7 million at March 31, 2023 and $4.3 million at December 31, 2022. Management believes that the Company's ACL for loans and reserve for unfunded commitments were adequate as of March 31, 2023.

Other real estate owned ("OREO")

The Company carried no OREO at March 31, 2023 and December 31, 2022.

At March 31, 2023 and December 31, 2022, the Company had no consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process according to local requirements of the applicable jurisdictions.

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Leases

3 Months Ended

Mar. 31, 2023

Leases [Abstract]

Leases

LeasesAs of March 31, 2023, the Company had 16 facilities contracted under various non-cancelable operating leases, most of which provide options to the Company to extend the lease periods and include periodic rent adjustments.

Lease expense for the three months ended March 31, 2023 and March 31, 2022 were $404 thousand and $416 thousand, respectively. Variable lease costs and short-term lease expenses included in lease expense during these periods were immaterial.

The weighted average remaining lease term for operating leases at March 31, 2023 and March 31, 2022 was 29.2 years and 30.1 years, respectively. The weighted average discount rate was 3.51% at March 31, 2023 and 3.45% at March 31, 2022.

At March 31, 2023, the remaining undiscounted cash flows by year of these lease liabilities were as follows:

(Dollars in thousands)	Operating Leases
2023 (nine remaining months)	$	1,067
2024	1,435
2025	1,441
2026	1,452
2027	1,454
Thereafter	32,346
Total lease payments	39,195
Less: Imputed interest	14,910
Total lease liability	$	24,285

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Deposits

3 Months Ended

Mar. 31, 2023

Deposits [Abstract]

Deposits

Deposits

Deposits are summarized as follows as of the periods indicated:

(Dollars in thousands)	March 31, 2023		December 31, 2022
Non-interest checking	$	1,247,253	$	1,361,588
Interest-bearing checking	641,194		678,715
Savings	297,790		326,666
Money market	1,454,858		1,381,645
CDs $250,000 or less	222,116		187,758
CDs greater than $250,000	152,945		99,434
Deposits	$	4,016,156	$	4,035,806

All of the Company's deposits outstanding at both March 31, 2023 and December 31, 2022 were customer deposits, and the Company had no brokered deposits at either March 31, 2023 or December 31, 2022. Customer deposits include reciprocal balances from checking, money market deposits and CDs received from participating banks in nationwide deposit networks due to our customers electing to participate in Company offered programs which allow for enhanced Federal Deposit Insurance Corporation ("FDIC") deposit insurance. Under this enhanced deposit insurance program, the equivalent of the customers' original deposited funds comes back to the Company and are carried within the appropriate category under deposits. The Company's balances in these reciprocal products were $721.1 million and $589.7 million at March 31, 2023 and December 31, 2022, respectively.

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Borrowed Funds and Subordinated Debt

3 Months Ended

Mar. 31, 2023

Debt Disclosure [Abstract]

Borrowed Funds and Subordinated Debt

Borrowed Funds and Subordinated Debt

The Company's borrowed funds amounted to $3.2 million at both March 31, 2023 and December 31, 2022 and were comprised of FHLB advances related to specific lending projects under the FHLB's community development and affordable housing programs as well as a small portion of borrowed funds from the New Hampshire Business Finance Authority borrowing under a New Hampshire community development program.

Borrowed funds at March 31, 2023 and December 31, 2022 are summarized, as follows:

	March 31, 2023				December 31, 2022
(Dollars in thousands)	Balance		Rate		Balance		Rate
Over 5 years	$	3,199	1.55	%	$	3,216	1.55	%
Total borrowed funds	$	3,199	1.55	%	$	3,216	1.55	%

The Company also had outstanding subordinated debt (net of deferred issuance costs) of $59.3 million at March 31, 2023 and $59.2 million at December 31, 2022. The outstanding subordinated notes are due on July 15, 2030 and callable at the Company's option on or after July 15, 2025.

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Derivatives and Hedging Activities

3 Months Ended

Mar. 31, 2023

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Hedging Activities

Derivatives and Hedging Activities

For further information on the Company's derivatives and hedging activities, see Note 9, "Derivatives and Hedging," to the Company's audited consolidated financial statements contained in the 2022 Annual Report on Form 10-K. 

The tables below present a summary of the Company's derivative financial instruments, notional amounts and fair values at the periods presented:

	March 31, 2023
(Dollars in thousands)	Asset Notional Amount		Asset Derivatives(1)		Liability Notional Amount		Liability Derivatives(1)
Derivatives not subject to hedge accounting
Interest-rate contracts - pay floating, receive fixed	$	—	$	—	$	7,714	$	624
Interest-rate contracts - pay fixed, receive floating	7,714		624		—		—
Risk participation agreements sold	—		—		46,907		98
Total back-to-back interest-rate swaps	$	7,714	$	624	$	54,621	$	722

	December 31, 2022
(Dollars in thousands)	Asset Notional Amount		Asset Derivatives(1)		Liability Notional Amount		Liability Derivatives(1)
Derivatives not subject to hedge accounting
Interest-rate contracts - pay floating, receive fixed	$	—	$	—	$	7,777	$	782
Interest-rate contracts - pay fixed, receive floating	7,777		782		—		—
Risk participation agreements sold	—		—		24,660		73
Total back-to-back interest-rate swaps	$	7,777	$	782	$	32,437	$	855

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(1)     Accrued interest balances related to the Company's interest-rate swaps are not included in the fair values above and are immaterial.

The Company had no derivative fair value or cash flow hedges at either March 31, 2023 or December 31, 2022.

Interest-rate Contracts

Each back-to-back interest-rate swap consists of two interest-rate swaps (a customer swap and offsetting counterparty swap) and amounted to a total number of four interest-rate swaps outstanding at March 31, 2023 and December 31, 2022. As a result of this offsetting relationship, there were no net gains or losses recognized in income on back-to-back swaps during the three months ended March 31, 2023 or March 31, 2022.

Interest-rate swaps with counterparties are subject to master netting agreements, while interest-rate swaps with customers are not. At March 31, 2023 and December 31, 2022, all back-to-back swaps with the counterparty were in asset positions, therefore there was no netting reflected in the Company's Consolidated Balance Sheets as of the respective dates.

Risk Participation Agreements

The Company enters into risk participation agreements ("RPA") for which the Company has assumed credit risk for customers' performance under interest-rate swap agreements related to the customers' commercial loan and receives fee income commensurate with the risk assumed. The RPA and the customers' loan are secured by the same collateral.

Credit Risk

The Company had one active interest-rate swap institutional counterparty that was rated A and A2 by Standard & Poor's and Moody's, respectively, at March 31, 2023. When the Company has credit risk exposure, collateral is posted by the counterparty. Collateral posted by counterparties is restricted and not considered an asset of the Company, therefore, it is not carried on the

Company's Consolidated Balance Sheets. If the Company posts collateral, the restricted cash is carried on the Company's Consolidated Balance Sheets. At March 31, 2023, the Company had no credit risk exposure relating to interest-rate swaps with counterparties and posted no cash collateral. At December 31, 2022, the Company had credit risk exposure relating to interest-rate swaps with counterparties of $708 thousand and cash collateral posted by counterparties amounted to $20 thousand.

Credit-risk-related Contingent Features

There have been no material changes to the credit-risk-related contingent provisions contained within the Company's interest-rate swaps with counterparties since December 31, 2022. As of March 31, 2023, the fair value of derivatives related to these agreements was at a net liability position of $10 thousand, which excludes any adjustment for nonperformance risk. The Company has minimum collateral posting thresholds with certain of its derivative counterparties and as of March 31, 2023, has not posted collateral related to these agreements.

Other Derivative Related Activity

At both March 31, 2023 and December 31, 2022, the Company had one participation loan for which the originating bank utilizes a back-to-back interest-rate swap structure and the Company has assumed a contingent liability commensurate with its participation percentage in the loan. At March 31, 2023, management considers the risk of material swap loss exposure related to this participation loan to be unlikely based on the borrower's financial and collateral strength.

Interest-rate lock commitments related to the origination of mortgage loans that will be sold are considered derivative instruments. The commitments to sell loans are also considered derivative instruments. At March 31, 2023 and December 31, 2022, the estimated fair value of the Company's interest-rate lock commitments and commitments to sell these mortgage loans were deemed immaterial.

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Regulatory Capital Requirements

3 Months Ended

Mar. 31, 2023

Compliance with Regulatory Capital Requirements under Banking Regulations [Abstract]

Regulatory Capital Requirements

Regulatory Capital Requirements

As of March 31, 2023 and December 31, 2022, the Company met the definition of "well-capitalized" under the applicable regulations of the Board of Governors of the Federal Reserve System and the Bank qualified as "well-capitalized" under the prompt corrective action regulations of the FDIC and the Basel III capital guidelines.

The Company's and the Bank's actual capital amounts and ratios are presented as of March 31, 2023 and December 31, 2022 in the tables below:

	Actual				Minimum Capital for Capital Adequacy Purposes(1)				Minimum Capital to be Well Capitalized(2)
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of March 31, 2023
The Company
Total Capital to risk-weighted assets ("RWA")	$	485,903	13.55	%	$	286,953	8.00	%	N/A		N/A
Tier 1 Capital to RWA	381,621		10.64	%	215,215		6.00	%	N/A		N/A
Tier 1 Capital to average assets ("AA") or Leverage Ratio	381,621		8.47	%	180,292		4.00	%	N/A		N/A
Common Equity Tier 1 Capital to RWA	381,621		10.64	%	161,411		4.50	%	N/A		N/A
The Bank
Total Capital to RWA	$	486,014	13.55	%	$	286,953	8.00	%	$	358,692	10.00	%
Tier 1 Capital to RWA	440,993		12.29	%	215,215		6.00	%	286,953		8.00	%
Tier 1 Capital to AA, Leverage Ratio	440,993		9.78	%	180,292		4.00	%	225,365		5.00	%
Common Equity Tier 1 Capital to RWA	440,993		12.29	%	161,411		4.50	%	233,150		6.50	%

	Actual				Minimum Capital for Capital Adequacy Purposes(1)				Minimum Capital to be Well Capitalized(2)
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2022
The Company
Total Capital to RWA	$	476,307	13.49	%	$	282,567	8.00	%	N/A		N/A
Tier 1 Capital to RWA	372,817		10.56	%	211,926		6.00	%	N/A		N/A
Tier 1 Capital to AA, Leverage Ratio	372,817		8.10	%	184,194		4.00	%	N/A		N/A
Common Equity Tier 1 Capital to RWA	372,817		10.56	%	158,944		4.50	%	N/A		N/A
The Bank
Total Capital to RWA	$	475,668	13.47	%	$	282,567	8.00	%	$	353,209	10.00	%
Tier 1 Capital to RWA	431,359		12.21	%	211,926		6.00	%	282,567		8.00	%
Tier 1 Capital to AA, Leverage Ratio	431,359		9.37	%	184,194		4.00	%	230,243		5.00	%
Common Equity Tier 1 Capital to RWA	431,359		12.21	%	158,944		4.50	%	229,586		6.50	%

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(1)Before application of the capital conservation buffer of 2.50% as of March 31, 2023, and December 31, 2022. See discussion      below.

(2)For the Bank to qualify as "well-capitalized," it must maintain at least the minimum ratios listed under the regulatory prompt corrective action framework. This framework does not apply to the Company.

The Company is subject to the Basel III capital ratio requirements which include a "capital conservation buffer" of 2.50% above the regulatory minimum risk-based capital adequacy requirements shown above. If a banking organization dips into its capital conservation buffer it may be restricted in its activities, including its ability to pay dividends and discretionary bonus payments to its executive officers. Both the Company's and the Bank's actual ratios, as outlined in the table above, exceeded the Basel III risk-based capital requirement with the capital conservation buffer as of March 31, 2023. At March 31, 2023, the capital conservation buffer amounted to $89.7 million for both the Company and the Bank.

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Comprehensive Income (Loss)

3 Months Ended

Mar. 31, 2023

Equity [Abstract]

Comprehensive Income (Loss)

Comprehensive Income (Loss)

The following table presents a reconciliation of the changes in the components of other comprehensive income (loss) for the dates indicated, including the amount of income tax (expense) benefit allocated to each component of other comprehensive income (loss):

	Three months ended March 31, 2023						Three months ended March 31, 2022
(Dollars in thousands)	Pre-Tax		Tax Benefit (Expense)		After Tax Amount		Pre-Tax		Tax Benefit (Expense)		After Tax Amount
Change in fair value of debt securities	$	26,160	$	(5,912)	$	20,248	$	(56,974)	$	12,840	$	(44,134)
Less: net security gains reclassified into non-interest income	—		—		—		1,062		(234)		828
Net change in fair value of debt securities	26,160		(5,912)		20,248		(58,036)		13,074		(44,962)
Total other comprehensive income (loss), net	$	26,160	$	(5,912)	$	20,248	$	(58,036)	$	13,074	$	(44,962)

Information on the Company's accumulated other comprehensive income (loss), net of tax, is comprised of the following components as of the periods indicated:

	Three months ended March 31, 2023				Three months ended March 31, 2022
(Dollars in thousands)	Unrealized Gains (Losses) on Debt Securities		Total		Unrealized Gains (Losses) on Debt Securities		Total
Accumulated other comprehensive (loss) income - beginning balance	$	(96,207)	$	(96,207)	$	4,662	$	4,662
Total other comprehensive loss, net	20,248		20,248		(44,962)		(44,962)
Accumulated other comprehensive loss - ending balance	$	(75,959)	$	(75,959)	$	(40,300)	$	(40,300)

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Stock-Based Compensation

3 Months Ended

Mar. 31, 2023

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

Stock-Based Compensation

There have been no material changes to The Enterprise Bancorp, Inc. 2016 Stock Incentive Plan (the "2016 Plan") since December 31, 2022. As of March 31, 2023, 376,429 shares of Company common stock remained available for future grants under the 2016 Plan.

Total stock-based compensation expense was $522 thousand for the three months ended March 31, 2023, compared to $478 thousand for the three months ended March 31, 2022.

Stock Option Awards

The Company issued no stock options during the three months ended March 31, 2023. The table below provides a summary of the options granted, including the weighted average fair value, the fair value as a percentage of the market value of the stock at the date of grant and the average assumptions used in the model for the prior period:

	Three months ended
	March 31, 2022
Options granted	16,797
Term in years	10
Weighted average assumptions used in the fair value model:
Expected volatility	44		%
Expected dividend yield	3.05		%
Expected life in years	6.5
Risk-free interest-rate	2.19		%
Weighted average market price on date of grants	$	38.58
Per share weighted average fair value	$	14.40
Fair value as a percentage of market value at grant date	37		%

Options granted during the first three months of 2022 generally vest 50% in year two and 50% in year four, on or about the anniversary date of the awards.

The Company utilizes the Black-Scholes option valuation model to determine the per share grant date fair value of stock option grants.

The Company recognized stock-based compensation expense related to stock option awards of $50 thousand for the three months ended March 31, 2023, compared to $48 thousand for the three months ended March 31, 2022.

Restricted Stock Awards

Restricted stock awards are granted at the market price of the Company's common stock on the date of the grant. Employee restricted stock awards generally vest over four years in equal portions beginning on or about the first anniversary date of the restricted stock award or are performance-based restricted stock awards that vest upon the Company achieving certain predefined performance objectives. Non-employee director restricted stock awards generally vest over two years in equal portions beginning on or about the first anniversary date of the restricted stock award.

The table below provides a summary of restricted stock awards granted during the periods indicated:

	Three months ended March 31,
Restricted Stock Awards (number of underlying shares)	2023		2022
Two-year vesting	—		8,823
Four-year vesting	32,719		21,554
Performance-based vesting	31,270		22,254
Total restricted stock awards granted	63,989		52,631
Weighted average grant date fair value	$	32.32	$	38.58

Stock-based compensation expense recognized in association with stock awards, mainly restricted stock awards, amounted to $407 thousand for the three months ended March 31, 2023, compared to $360 thousand for the three months ended March 31, 2022.

Stock in Lieu of Directors' Fees

Non-employee members of the Company's Board of Directors (the "Board") may opt to receive newly issued shares of the Company's common stock in lieu of cash compensation for attendance at meetings of the Board and committees of the Board. Stock-based compensation expense related to these directors' fees amounted to $65 thousand for the three months ended March 31, 2023, compared to $70 thousand for the three months ended March 31, 2022.

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Earnings Per Share

3 Months Ended

Mar. 31, 2023

Earnings Per Share [Abstract]

Earnings Per Share

Earnings per Share

The table below presents basic earnings per share and the increase in average shares outstanding, using the treasury stock method, for the diluted earnings per share calculation for the periods indicated:

	Three months ended March 31,
	2023	2022
Basic weighted average common shares outstanding	12,155,320	12,055,991
Dilutive shares	38,436	63,845
Diluted weighted average common shares outstanding	12,193,756	12,119,836

There were 34,164 and 34,210 stock options outstanding for the three months ended March 31, 2023 and March 31, 2022, respectively, that were determined to be anti-dilutive and therefore excluded from the calculation of dilutive shares for those periods. These stock options, which were not dilutive, may potentially dilute earnings per share in the future.

Unvested participating restricted awards amounted to 135,216 shares and 106,658 shares as of March 31, 2023 and December 31, 2022, respectively.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2023

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements The FASB defines the fair value of an asset or liability to be the price which a seller would receive in an orderly transaction between market participants (an exit price) and also establishes a fair value hierarchy segregating fair value measurements using three levels of inputs: (Level 1) quoted market prices in active markets for identical assets or liabilities; (Level 2) significant other observable inputs, including quoted prices for similar items in active markets, quoted prices for identical or similar items in markets that are not active, inputs such as interest rates and yield curves, volatilities, prepayment speeds, credit risks and default rates which provide a reasonable basis for fair value determination or inputs derived principally from observed market data; and (Level 3) significant unobservable inputs for situations in which there is little, if any, market activity for the asset or liability. Unobservable inputs must reflect reasonable assumptions that market participants would use in pricing the asset or liability, which are developed based on the best information available under the circumstances.

The following tables summarize significant assets and liabilities carried at fair value and placement in the fair value hierarchy at the dates specified:

	March 31, 2023
			Fair Value Measurements Using:
(Dollars in thousands)	Fair Value		(Level 1)		(Level 2)		(Level 3)
Assets measured on a recurring basis:
Debt securities	$	825,520	$	—	$	825,520	$	—
Equity securities	—		—		—		—
FHLB stock	2,343		—		2,343		—
Interest-rate swaps	624		—		624		—
Assets measured on a non-recurring basis:
Individually evaluated loans (collateral dependent)	954		—		—		954
Liabilities measured on a recurring basis:
Interest-rate swaps	$	624	$	—	$	624	$	—
RPA sold	98		—		98		—

 

	December 31, 2022
			Fair Value Measurements Using:
(Dollars in thousands)	Fair Value		(Level 1)		(Level 2)		(Level 3)
Assets measured on a recurring basis:
Debt securities	$	816,102	$	—	$	816,102	$	—
Equity securities	4,269		4,269		—		—
FHLB stock	2,343		—		2,343		—
Interest-rate swaps	782		—		782		—
Assets measured on a non-recurring basis:
Individually evaluated loans (collateral dependent)	740		—		—		740
Liabilities measured on a recurring basis:
Interest-rate swaps	$	782	$	—	$	782	$	—
RPA sold	73		—		73		—

The Company utilizes third-party pricing vendors to provide valuations on its debt securities.

The Company's equity portfolio fair value is measured based on quoted market prices for the shares; therefore, these securities are categorized as Level 1 within the fair value hierarchy.

The Bank is required to purchase FHLB stock at par value in association with advances from the FHLB. The stock is issued, redeemed, repurchased and transferred by the FHLB only at their fixed par value. This stock is classified as a restricted investment and carried at FHLB par value which management believes approximates fair value; therefore, these securities are categorized as Level 2 measures. 

The fair values of derivative assets and liabilities, which are comprised of back-to-back swaps and risk participation agreements, represent a FASB Level 2 measurement and are based on settlement values adjusted for credit risks and observable market interest-rate curves. Refer also to Note 8, "Derivatives and Hedging Activities," this Form 10-Q, contained above, for additional information on the Company's interest-rate swaps.

For loans individually assessed and deemed to be collateral dependent management has estimated the value and the probable credit loss by comparing the loan's amortized cost against the expected realizable fair value of the collateral (appraised value, or internal analysis, less estimated cost to sell, adjusted as necessary for changes in relevant valuation factors subsequent to the measurement date). Certain inputs used in these assessments, and possible subsequent adjustments, are not always observable, and therefore, collateral dependent loans carried at realizable fair value are categorized as Level 3 within the fair value

hierarchy. A specific reserve is assigned to the collateral dependent loan for the amount of management's estimated probable credit loss. The specific reserve assigned to individually evaluated loans that are collateral dependent amounted to $371 thousand at March 31, 2023, compared to $298 thousand at December 31, 2022.

The following table presents additional quantitative information about assets measured at fair value on a non-recurring basis for which the Company utilized Level 3 inputs (significant unobservable inputs for situations in which there is little, if any, market activity for the asset or liability) to determine fair value as of March 31, 2023 and December 31, 2022:

	Fair Value
(Dollars in thousands)	March 31, 2023		December 31, 2022		Valuation Technique	Unobservable Input	Unobservable Input Value or Range
Assets measured on a non-recurring basis:
Individually evaluated loans (collateral dependent)	$	954	$	740	Appraisal of collateral	Appraisal adjustments(1)	15% - 50%

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(1)Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses.

Estimated Fair Values of Assets and Liabilities

In addition to disclosures regarding the measurement of assets and liabilities carried at fair value on the Company's Consolidated Balance Sheets, the Company is also required to disclose fair value information about financial instruments for which it is practicable to estimate that value, whether or not recognized on the Company's Consolidated Balance Sheets. 

Financial instruments for which the fair value is disclosed but not recognized on the Company's Consolidated Balance Sheets are summarized below. The table includes the carrying value, estimated fair value and its placement in the fair value hierarchy as follows:

	March 31, 2023
					Fair Value Measurement
(Dollars in thousands)	Carrying Value		Fair Value		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial assets:
Loans held for sale	$	362	$	358	$	—	$	358	$	—
Loans, net	3,175,154		3,017,247		—		—		3,017,247
Financial liabilities:
CDs	375,061		370,316		—		370,316		—
Borrowed funds	3,199		2,191		—		2,191		—
Subordinated debt	59,261		55,671		—		55,671		—

	December 31, 2022
					Fair Value Measurement
(Dollars in thousands)	Carrying Value		Fair Value		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial assets:
Loans, net	$	3,127,878	$	2,952,778	$	—	$	—	$	2,952,778
Financial liabilities:
CDs	287,192		281,800		—		281,800		—
Borrowed funds	3,216		2,006		—		2,006		—
Subordinated debt	59,182		55,407		—		55,407		—

Excluded from the tables above are certain financial instruments with carrying values that approximated their fair value at the dates indicated, as they were short-term in nature or payable on demand. These include cash and cash equivalents, accrued interest and non-term deposit accounts. The respective carrying values of these instruments would all be classified within Level 1 in the fair value hierarchy.

Also excluded from these tables are the fair values of commitments for unused portions of lines of credit and commitments to originate loans that were short-term, at current market rates and estimated to have no significant change in fair value.

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Supplemental Cash Flow Information

3 Months Ended

Mar. 31, 2023

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

Supplemental Cash Flow Information

The supplemental cash flow information for the three months ended March 31, 2023 and March 31, 2022 is as follows:

	Three months ended March 31,
(Dollars in thousands)	2023		2022
Supplemental financial data:
Cash paid for: interest	$	6,931	$	2,222
Cash paid for: income taxes	4,455		5,060
Cash paid for: lease liability	340		331
Supplemental schedule of non-cash activity:
Net purchases of investment securities not yet settled	—		1,500

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2023

Accounting Policies [Abstract]

Organization of the Company and Basis of Presentation

Organization of the Company and Basis of Presentation

The accompanying unaudited consolidated interim financial statements and these notes should be read in conjunction with the December 31, 2022 audited consolidated financial statements and notes thereto contained in the Annual Report on Form 10-K of Enterprise Bancorp, Inc. (the "Company," "Enterprise," "we," or "our") for the year ended December 31, 2022 (the "2022 Annual Report on Form 10-K") as filed with the Securities and Exchange Commission (the "SEC") on March 8, 2023. The Company has not materially changed its significant accounting policies from those disclosed in its 2022 Annual Report on Form 10-K. See Item (d), "Recent Accounting Pronouncements," below in this Note 1.

The accompanying unaudited consolidated interim financial statements of the Company include the accounts of the Company and its wholly owned subsidiary, Enterprise Bank and Trust Company, commonly referred to as Enterprise Bank (the "Bank"). The Bank is a Massachusetts trust company and state chartered commercial bank organized in 1989. Substantially all of the Company's operations are conducted through the Bank and its subsidiaries.

The Bank's subsidiaries include Enterprise Insurance Services, LLC and Enterprise Wealth Services, LLC, both organized under the laws of the State of Delaware, to engage in insurance sales activities and offer non-deposit investment products and services, respectively. In addition, the Bank has the following subsidiaries that are incorporated in the Commonwealth of Massachusetts and classified as security corporations in accordance with applicable Massachusetts General Laws: Enterprise Security Corporation; Enterprise Security Corporation II; and Enterprise Security Corporation III. The security corporations, which hold various types of qualifying securities, are limited to conducting investment activities that the Bank itself would be allowed to conduct under applicable laws. In February 2023, the Bank organized the EBTC NMTC Investment Fund - CHC, LLC (the "NMTC Investment Fund") under the laws of the State of Delaware, in conjunction with the Banks investment in a qualifying New Market Tax Credit ("NMTC") project. The NMTC Investment Fund is the Company's only unconsolidated Variable Interest Entity ("VIE"). The services offered through the Bank and its subsidiaries are managed as one strategic unit and represent the Company's only reportable operating segment.

Organization of the Company and Basis of Presentation - Basis of Accounting

The accompanying unaudited consolidated interim financial statements, and notes thereto, in this Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2023 (this "Form 10-Q"), have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and the SEC instructions for Quarterly Reports on Form 10-Q. In the opinion of management, the accompanying unaudited consolidated interim financial statements reflect all necessary adjustments, consisting of normal recurring accruals and elimination of intercompany balances, for a fair presentation.

Organization of the Company and Basis of Presentation - Reclassifications

Interim results are not necessarily indicative of results to be expected for the entire year, or any future period.

Uses of Estimates

Uses of Estimates

In preparing the unaudited consolidated interim financial statements in conformity with GAAP, management is required to exercise judgment in determining many of the methodologies, assumptions and estimates to be utilized. These assumptions and estimates affect the reported values of assets and liabilities as of the balance sheet dates and income and expenses for the period then ended. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates should the assumptions and estimates used be incorrect or change over time due to changes in circumstances. Changes in those estimates resulting from continuing changes in the economic environment and other factors will be reflected in the consolidated financial statements and results of operations in future periods.

As discussed in the Company's 2022 Annual Report on Form 10-K, the most significant areas in which management applies critical assumptions and estimates are: the estimates of the allowance for credit losses ("ACL") for loans, available for sale securities and reserve for unfunded commitments, and the impairment review of goodwill. Refer to Note 1, "Summary of Significant Accounting Policies," to the Company's audited consolidated financial statements included in the Company's 2022 Annual Report on Form 10-K for accounting policies related to these significant estimates.

Unconsolidated Variable Interest Entity / Proportional Accounting

Unconsolidated Variable Interest Entity / Proportional Accounting

In March 2023, the Bank made an equity contribution to the NMTC Investment Fund a newly formed Limited Liability Company in order to invest in NMTC, a program, which is administered by the U.S. Department of the Treasury's Community Development Financial Institutions Fund and allocated to Community Development Entities ("CDE").

The NMTC program provides federal tax incentives for investments in distressed communities and promotes economic improvements through the development of successful businesses in these communities. The NMTCs are available to investors

over a seven-year period and are subject to recapture if certain events occur during such period. The Bank invested $3.7 million in the Investment Fund and anticipates receiving $4.8 million of federal tax credits over the next seven years (5% in each of the first three years, and 6% in each of the next four years). The underlying project is structured through a qualified CDE, which in turn has made loans to a qualified active low-income business. The Bank has no unfunded commitments associated with its NMTC investment. The Company has elected to account for the tax equity investment, using the proportional amortization method. Under this method the NMTC Investment Fund is not consolidated with the Company and instead, the initial cost of the investment is amortized in proportion to the amount of tax credits and other tax benefits received over the allotment period. The investment is carried within the line "Prepaid expenses and other assets" on the Company's Consolidated Balance Sheet and the investment amortization expense and tax credits are presented on a net basis within the line "Provision for income taxes" on the Company's Consolidated Statements of Income. During the three months ended March 31, 2023, the related amortization expense and tax credits amounted to $44 thousand and $153 thousand, respectively.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Accounting pronouncements adopted by the Company

In March 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2023-02, "Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method." ASU 2023-02 permits reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. The election can be made for each individual qualifying tax credit investment. Under the proportional amortization method, the initial cost of an investment is amortized in proportion to the amount of tax credits and other tax benefits received, with the amortization and tax credits recognized as a component of income tax expense. To qualify for the proportional amortization method, all of the following conditions must be met: (1) It is probable that the income tax credits allocated to the tax equity investor will be available; (2) The tax equity investor does not have the ability to exercise significant influence over the operating and financial policies of the underlying project; (3) Substantially all of the projected benefits are from income tax credits and other income tax benefits; (4) The tax equity investor's projected yield based solely on the cash flows from the income tax credits and other income tax benefits is positive; and (5) The tax equity investor is a limited liability investor in the limited liability entity for both legal and tax purposes, and the tax equity investor's liability is limited to its capital investment. Under the proportional amortization method, the investment shall be tested for impairment when events or changes in circumstances indicate that it is more likely than not that the carrying amount of the investment will not be realized. An impairment loss shall be measured as the amount by which the carrying amount of an investment exceeds its fair value. A previously recognized impairment loss shall not be reversed. ASU 2023-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2023. The Company has elected to early adopt ASU 2022-01 effective on January 1, 2023, applying the new guidance to a new investment in NMTC made in the first quarter of 2023, and the adoption did not have a significant impact on the financial statements.

In March 2022, the FASB issued ASU 2022-01, "Derivatives and Hedging (Topic 815): Fair Value Hedging—Portfolio Layer Method." This ASU clarifies the guidance on fair value hedge accounting of interest rate risk for portfolios of financial assets. The ASU amends the guidance in ASU 2017-12, "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities," that, among other things, established the "last-of-layer" method for making the fair value hedge accounting for these portfolios more accessible. ASU 2022-01 renames that method the "portfolio layer" method and addresses feedback from stakeholders regarding its application. The Company adopted ASU 2022-01 effective on January 1, 2023 and the adoption did not have a significant impact on the financial statements.

In March 2022, the FASB issued ASU 2022-02, "Financial Instruments—Credit Losses (Topic 326), Troubled Debt Restructurings and Vintage Disclosures." This ASU eliminates the accounting guidance for troubled debt restructurings by creditors that have adopted the current expected credit loss ("CECL") methodology for estimating allowances for credit losses and enhances the disclosure requirements for loan restructurings made with borrowers experiencing financial difficulty. In addition, the amendments require a public business entity to disclose current-period gross charge-offs for financing receivables and net investment in leases by year of origination in the vintage disclosures. The Company adopted ASU 2022-02 effective on January 1, 2023, prospectively, and the adoption did not have a significant impact on the financial statements.

Subsequent Events

Subsequent Events The Company has evaluated subsequent events and transactions from March 31, 2023 through the date this Form 10-Q was filed with the SEC for potential recognition or disclosure as required by GAAP and determined there were no material subsequent events requiring recognition or disclosure.

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Investment Securities (Tables)

3 Months Ended

Mar. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Debt Securities, Available-for-Sale Investments Reconciliation

The amortized cost and fair values of debt securities at the dates specified are summarized as follows:

	March 31, 2023
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Federal agency obligations	$	5,012	$	1	$	—	$	5,013
U.S. treasury securities	45,955		—		2,045		43,910
Federal agency collateralized mortgage obligations ("CMO")	461,436		203		54,796		406,843
Federal agency mortgage-backed securities ("MBS")	23,892		64		2,776		21,180
Taxable municipal securities	287,421		36		37,173		250,284
Tax-exempt municipal securities	82,182		246		485		81,943
Corporate bonds	5,636		—		109		5,527
Subordinated corporate bonds	11,951		—		1,131		10,820
Total debt securities, at fair value	$	923,485	$	550	$	98,515	$	825,520

	December 31, 2022
(Dollars in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Federal agency obligations	$	5,014	$	—	$	37	$	4,977
U.S. treasury securities	45,942		—		2,691		43,251
Federal agency CMO	474,777		3		67,798		406,982
Federal agency MBS	24,172		27		3,178		21,021
Taxable municipal securities	287,435		29		48,187		239,277
Tax-exempt municipal securities	84,457		66		870		83,653
Corporate bonds	6,480		—		186		6,294
Subordinated corporate bonds	11,950		—		1,303		10,647
Total debt securities, at fair value	$	940,227	$	125	$	124,250	$	816,102

Schedule of Unrealized Loss on Debt Securities, Available-for-Sale Investments

The following tables summarize the duration of unrealized losses for debt securities at March 31, 2023 and December 31, 2022:

	March 31, 2023
	Less than 12 months				12 months or longer				Total
(Dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		# of Holdings
U.S. treasury securities	$	—	$	—	$	43,910	$	2,045	$	43,910	$	2,045	6
Federal agency CMO	46,380		844		335,270		53,952		381,650		54,796		98
Federal agency MBS	—		—		19,217		2,776		19,217		2,776		11
Taxable municipal securities	20,486		729		226,761		36,444		247,247		37,173		272
Tax-exempt municipal securities	31,239		155		9,801		330		41,040		485		80
Corporate bonds	4,857		82		670		27		5,527		109		25
Subordinated corporate bonds	1,886		66		8,935		1,065		10,821		1,131		6
Total	$	104,848	$	1,876	$	644,564	$	96,639	$	749,412	$	98,515	498

	December 31, 2022
	Less than 12 months				12 months or longer				Total
(Dollars in thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		# of Holdings
Federal agency obligations	$	4,977	$	37	$	—	$	—	$	4,977	$	37	1
U.S. treasury securities	2,878		109		40,374		2,582		43,252		2,691		6
Federal agency CMO	164,391		13,004		233,051		54,794		397,442		67,798		102
Federal agency MBS	9,923		797		9,165		2,381		19,088		3,178		11
Taxable municipal securities	93,345		10,411		144,903		37,776		238,248		48,187		273
Tax-exempt municipal securities	66,277		870		—		—		66,277		870		112
Corporate bonds	6,294		186		—		—		6,294		186		31
Subordinated corporate bonds	6,206		743		4,440		560		10,646		1,303		6
Total	$	354,291	$	26,157	$	431,933	$	98,093	$	786,224	$	124,250	542

Debt Securities, Available-for-Sale Investments Classified by Contractual Maturity Date

The contractual maturity distribution at March 31, 2023 of debt securities was as follows:    

(Dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	43,577	$	42,648
Due after one, but within five years	137,025		133,624
Due after five, but within ten years	304,972		267,490
Due after ten years	437,911		381,758
Total debt securities	$	923,485	$	825,520

Schedule of Realized Gain (Loss) on Sales of Debt Securities, Available-for-Sale Investments

Sales of debt securities for the three months ended March 31, 2023 and March 31, 2022 are summarized as follows:     

	Three months ended March 31,
(Dollars in thousands)	2023		2022
Amortized cost of debt securities sold (1)	$	—	$	31,653
Gross realized gains on sales	—		1,062
Gross realized losses on sales	—		—
Total proceeds from sales of debt securities	$	—	$	32,715

_________________________________________

(1)Amortized cost of investments sold is determined on a specific identification basis and includes pending trades based on trade date, if applicable.

Gain (Loss) on Equity Securities

Gains and losses on equity securities for the three months ended March 31, 2023 and March 31, 2022 are summarized as follows:

	Three months ended March 31,
(Dollars in thousands)	2023		2022
Net losses recognized during the period on equity securities	$	(16)	$	(67)
Less: Net gains recognized on equity securities sold during the period	—		—
Unrealized losses recognized during the reporting period on equity securities still held at the end of the period	$	(16)	$	(67)

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Loans (Tables)

3 Months Ended

Mar. 31, 2023

Receivables [Abstract]

Schedule of Loans by Loan Classification

Major classifications of loans and their amortized cost as of the dates indicated were as follows:

(Dollars in thousands)	March 31, 2023		December 31, 2022
Commercial real estate	$	1,929,544	$	1,921,410
Commercial and industrial	423,864		414,490
Commercial construction	456,735		424,049
Total commercial loans	2,810,143		2,759,949
Residential mortgages	335,834		332,632
Home equity loans and lines	75,809		79,807
Consumer	8,370		8,130
Total retail loans	420,013		420,569
Total loans	3,230,156		3,180,518
ACL for loans	(55,002)		(52,640)
Net loans	$	3,175,154	$	3,127,878

Schedule of Loans Pledged as Collateral

Loans designated as qualified collateral and pledged to the FHLB for borrowing capacity as of the dates indicated are summarized below:

(Dollars in thousands)	March 31, 2023		December 31, 2022
Commercial real estate	$	393,513	$	113,830
Residential mortgages	314,595		309,023
Home equity	33,971		39,724
Total loans pledged to FHLB	$	742,079	$	462,577

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ACL for Loans (Tables)

3 Months Ended

Mar. 31, 2023

Receivables [Abstract]

Financing Receivable Credit Quality Indicators

The following tables present the amortized cost basis of the Company's loan portfolio risk ratings within portfolio classifications, by origination date, or revolving status as of the dates indicated:

	Balance at March 31, 2023
	Term Loans by Origination Year
(Dollars in thousands)	2023		2022		2021		2020		2019		Prior		Revolving Loans		Revolving Loans Converted to Term		Total
Commercial real estate
Pass	$	32,192	$	389,368	$	375,042	$	200,608	$	220,511	$	677,333	$	1,315	$	—	$	1,896,369
Special mention	—		—		—		—		503		19,068		—		—		19,571
Substandard	—		—		280		—		1,014		12,310		—		—		13,604
Total commercial real estate	32,192		389,368		375,322		200,608		222,028		708,711		1,315		—		1,929,544
Current period charge-offs	—		—		—		—		—		—		—		—		—
Commercial and industrial
Pass	18,135		62,802		53,038		31,245		27,351		53,141		170,851		976		417,539
Special mention	—		—		—		—		—		282		2,192		925		3,399
Substandard	—		—		19		—		7		602		2,298		—		2,926
Total commercial and industrial	18,135		62,802		53,057		31,245		27,358		54,025		175,341		1,901		423,864
Current period charge-offs	5		6		—		—		—		72		—		—		83
Commercial construction
Pass	22,313		162,026		182,219		33,775		23,818		7,533		21,053		—		452,737
Special mention	—		—		—		—		3,998		—		—		—		3,998
Total commercial construction	22,313		162,026		182,219		33,775		27,816		7,533		21,053		—		456,735
Current period charge-offs	—		—		—		—		—		—		—		—		—
Residential mortgages
Pass	6,516		113,213		72,701		48,817		19,705		72,358		—		—		333,310
Special mention	—		—		—		—		—		113		—		—		113
Substandard	—		—		—		—		1,055		1,356		—		—		2,411
Total residential mortgages	6,516		113,213		72,701		48,817		20,760		73,827		—		—		335,834
Current period charge-offs	—		—		—		—		—		—		—		—		—
Home equity
Pass	—		421		588		453		338		2,152		71,443		46		75,441
Substandard	—		—		273		—		—		95		—		—		368
Total home equity	—		421		861		453		338		2,247		71,443		46		75,809
Current period charge-offs	—		—		—		—		—		—		—		—		—
Consumer
Pass	652		3,257		1,705		977		933		846		—		—		8,370
Total consumer	652		3,257		1,705		977		933		846		—		—		8,370
Current period charge-offs	1		5		—		—		—		—		—		—		6
Total loans	$	79,808	$	731,087	$	685,865	$	315,875	$	299,233	$	847,189	$	269,152	$	1,947	$	3,230,156
Total current period charge-offs	$	6	$	11	$	—	$	—	$	—	$	72	$	—	$	—	$	89

	Balance at December 31, 2022
	Term Loans by Origination Year
(Dollars in thousands)	2021		2020		2019		2018		2017		Prior		Revolving Loans		Revolving Loans Converted to Term		Total
Commercial real estate
Pass	$	391,515	$	381,771	$	204,125	$	218,664	$	114,175	$	577,354	$	1,347	$	200	$	1,889,151
Special mention	—		—		—		507		2,041		16,248		—		—		18,796
Substandard	—		289		—		1,160		1,404		10,610		—		—		13,463
Total commercial real estate	391,515		382,060		204,125		220,331		117,620		604,212		1,347		200		1,921,410
Commercial and industrial
Pass	59,824		53,059		33,027		29,293		13,364		43,724		171,670		3,235		407,196
Special mention	—		—		—		11		66		278		3,132		—		3,487
Substandard	—		19		—		8		138		325		2,964		353		3,807
Total commercial and industrial	59,824		53,078		33,027		29,312		13,568		44,327		177,766		3,588		414,490
Commercial construction
Pass	151,107		169,549		35,651		31,189		7,729		3,379		19,778		1,473		419,855
Special mention	—		—		—		3,900		—		—		—		—		3,900
Substandard	—		294		—		—		—		—		—		—		294
Total commercial construction	151,107		169,843		35,651		35,089		7,729		3,379		19,778		1,473		424,049
Residential mortgages
Pass	112,804		73,955		49,549		20,140		18,799		54,620		—		—		329,867
Special mention	—		—		—		—		—		325		—		—		325
Substandard	—		—		—		1,060		—		1,380		—		—		2,440
Total residential mortgages	112,804		73,955		49,549		21,200		18,799		56,325		—		—		332,632
Home equity
Pass	328		596		456		345		—		1,220		75,324		1,054		79,323
Substandard	—		273		—		—		—		211		—		—		484
Total home equity	328		869		456		345		—		1,431		75,324		1,054		79,807
Consumer
Pass	3,144		1,852		1,063		1,045		606		420		—		—		8,130
Total consumer	3,144		1,852		1,063		1,045		606		420		—		—		8,130
Total loans	$	718,722	$	681,657	$	323,871	$	307,322	$	158,322	$	710,094	$	274,215	$	6,315	$	3,180,518

Past Due Financing Receivables

The following tables present an age analysis of past due loans by portfolio classification as of the dates indicated:

	Balance at March 31, 2023
(Dollars in thousands)	30-59 Days Past Due		60-89 Days Past Due		Past Due 90 Days or More		Total Past Due Loans(1)		Current  Loans(1)		Total Loans
Commercial real estate	$	2,589	$	384	$	2,091	$	5,064	$	1,924,480	$	1,929,544
Commercial and industrial	206		601		78		885		422,979		423,864
Commercial construction	—		—		—		—		456,735		456,735
Residential mortgages	431		1,055		—		1,486		334,348		335,834
Home equity	119		—		73		192		75,617		75,809
Consumer	14		45		—		59		8,311		8,370
Total loans	$	3,359	$	2,085	$	2,242	$	7,686	$	3,222,470	$	3,230,156

	Balance at December 31, 2022
(Dollars in thousands)	30-59 Days Past Due		60-89 Days Past Due		Past Due 90 Days or More		Total Past Due Loans(1)		Current  Loans(1)		Total Loans
Commercial real estate	$	2,818	$	1,268	$	1,631	$	5,717	$	1,915,693	$	1,921,410
Commercial and industrial	786		39		217		1,042		413,448		414,490
Commercial construction	412		—		294		706		423,343		424,049
Residential mortgages	1,119		55		149		1,323		331,309		332,632
Home equity	163		—		73		236		79,571		79,807
Consumer	21		—		—		21		8,109		8,130
Total loans	$	5,319	$	1,362	$	2,364	$	9,045	$	3,171,473	$	3,180,518

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(1)The loan balances in the tables above include loans designated as non-accrual according to their payment due status.

Financing Receivable, Nonaccrual

The following tables present the amortized cost of non-accrual loans by portfolio classification as of the dates indicated:

	Balance at March 31, 2023
(Dollars in thousands)	Total Non-accrual Loans		Non-accrual Loans without a Specific Reserve		Non-accrual Loans with a Specific Reserve		Related Specific Reserve
Commercial real estate	$	4,926	$	3,912	$	1,014	$	274
Commercial and industrial	673		325		348		309
Commercial construction	—		—		—		—
Residential mortgages	1,565		1,565		—		—
Home equity	368		95		273		85
Consumer	—		—		—		—
Total loans	$	7,532	$	5,897	$	1,635	$	668

	Balance at December 31, 2022
(Dollars in thousands)	Total Non-accrual Loans		Non-accrual Loans without a Specific Reserve		Non-accrual Loans with a Specific Reserve		Related Specific Reserve
Commercial real estate	$	3,355	$	2,317	$	1,038	$	298
Commercial and industrial	730		348		382		382
Commercial construction	294		294		—		—
Residential mortgages	1,532		1,532		—		—
Home equity	211		211		—		—
Consumer	—		—		—		—
Total loans	$	6,122	$	4,702	$	1,420	$	680

Impaired Financing Receivables

The following tables present the recorded investment in collateral dependent loans and the related specific allowance by portfolio allocation as of the dates indicated:

	Balance at March 31, 2023
(Dollars in thousands)	Unpaid Contractual Principal Balance		Total Recorded Investment in Collateral Dependent Loans		Recorded Investment without a Specific Reserve		Recorded Investment with a Specific Reserve		Related Specific Reserve
Commercial real estate	$	22,783	$	20,163	$	19,149	$	1,014	$	274
Commercial and industrial	2,867		562		524		38		12
Commercial construction	—		—		—		—		—
Residential mortgages	1,873		1,678		1,678		—		—
Home equity	435		368		95		273		85
Consumer	—		—		—		—		—
Total	$	27,958	$	22,771	$	21,446	$	1,325	$	371

	Balance at December 31, 2022
(Dollars in thousands)	Unpaid Contractual Principal Balance		Total Recorded Investment in Collateral Dependent Loans		Recorded Investment without a Specific Reserve		Recorded Investment with a Specific Reserve		Related Specific Reserve
Commercial real estate	$	24,530	$	21,916	$	20,878	$	1,038	$	298
Commercial and industrial	3,210		863		863		—		—
Commercial construction	294		294		294		—		—
Residential mortgages	2,096		1,914		1,914		—		—
Home equity	386		211		211		—		—
Consumer	—		—		—		—		—
Total	$	30,516	$	25,198	$	24,160	$	1,038	$	298

Troubled Debt Restructurings on Financing Receivables

The following table presents the amortized cost basis of loan modifications made to borrowers experiencing financial difficulty by type of concession granted during the period indicated:

	Three months ended
	March 31, 2023
(Dollars in thousands)		Payment Deferrals		% of Loan Class Total
Commercial real estate		$	281	0.01	%
Commercial and industrial		38		0.01	%
Total		$	319	0.01	%

The following table presents the financial effect of loan modifications made to borrowers experiencing financial difficulty during the period indicated:

	Three months ended
	March 31, 2023
		Weighted-Average Payment Deferrals
Commercial real estate		0.5 years
Commercial and industrial		0.5 years

The following table presents the performance status of loans that had been modified within the preceding twelve months for borrowers experiencing financial difficulty, at the period indicated.

	Balance at March 31, 2023
(Dollars in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		Past Due 90 Days or More		Total Past Due
Commercial real estate	$	406	$	—	$	—	$	1,014	$	1,014
Commercial and industrial	237		—		—		—		—
Commercial construction	—		—		—		—		—
Residential mortgages	—		—		—		—		—
Home equity	—		—		—		—		—
Consumer	—		—		—		—		—
Total	$	643	$	—	$	—	$	1,014	$	1,014

The following table presents the number and balance of loans modified as TDRs, by portfolio classification, during the period indicated:

	Three months ended
	March 31, 2022
(Dollars in thousands)	Number of Restructurings	Pre-modification Outstanding Recorded Investment		Post-modification Outstanding Recorded Investment
Commercial real estate	2	$	1,718	$	1,699
Total	2	$	1,718	$	1,699

Payment defaults by portfolio classification, during the three months indicated, on loans modified as TDRs within the preceding twelve months are detailed below:

	Three months ended
	March 31, 2022
(Dollars in thousands)	Number of TDRs that Defaulted	Post-modification Outstanding Recorded Investment
Commercial and industrial	1	$	48
Total	1	$	48

The following table sets forth the post modification balances of TDRs listed by type of modification for TDRs that occurred during the three-month period indicated:

	Three months ended
	March 31, 2022
(Dollars in thousands)	Number of Restructurings	Amount
Temporary payment reduction and payment re-amortization of remaining principal over extended term	1	$	1,404
Temporary interest only payment plan	1	295
Total	2	$	1,699
Amount of ACL for loans associated with TDRs listed above		$	—

Change in Provisions for Credit Losses

The following table presents changes in the provision for credit losses on loans and unfunded commitments during the three-month periods indicated:

	Three months ended
(Dollars in thousands)	March 31, 2023		March 31, 2022
Provision for credit losses on loans	$	2,318	$	825
Provision for unfunded commitments	418		(295)
Total provision for credit losses	$	2,736	$	530

Allowance for Credit Losses on Financing Receivables

The following tables present changes in the ACL for loans by portfolio classification, during the three months indicated:

(Dollars in thousands)	Commercial Real Estate		Commercial and Industrial		Commercial Construction		Residential Mortgage		Home Equity		Consumer		Total
Beginning Balance at December 31, 2022	$	36,564	$	8,896	$	3,961	$	2,255	$	633	$	331	$	52,640
Provision for credit losses on loans	1,161		438		492		123		76		28		2,318
Recoveries	—		127		—		—		3		3		133
Less: Charge-offs	—		83		—		—		—		6		89
Ending Balance at March 31, 2023	$	37,725	$	9,378	$	4,453	$	2,378	$	712	$	356	$	55,002

(Dollars in thousands)	Commercial Real Estate		Commercial and Industrial		Commercial Construction		Residential Mortgage		Home Equity		Consumer		Total
Beginning Balance at December 31, 2021	$	31,847	$	9,574	$	4,090	$	1,405	$	465	$	323	$	47,704
Provision for credit losses on loans	2,089		(543)		(572)		(83)		(15)		(51)		825
Recoveries	—		24		—		—		4		5		33
Less: Charge-offs	—		105		—		—		—		33		138
Ending Balance at March 31, 2022	$	33,936	$	8,950	$	3,518	$	1,322	$	454	$	244	$	48,424

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Leases (Tables)

3 Months Ended

Mar. 31, 2023

Leases [Abstract]

Operating Lease Liability Maturity Table as Lessee

At March 31, 2023, the remaining undiscounted cash flows by year of these lease liabilities were as follows:

(Dollars in thousands)	Operating Leases
2023 (nine remaining months)	$	1,067
2024	1,435
2025	1,441
2026	1,452
2027	1,454
Thereafter	32,346
Total lease payments	39,195
Less: Imputed interest	14,910
Total lease liability	$	24,285

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Deposits (Tables)

3 Months Ended

Mar. 31, 2023

Banking and Thrift, Interest [Abstract]

Schedule of Deposit Liabilities

Deposits are summarized as follows as of the periods indicated:

(Dollars in thousands)	March 31, 2023		December 31, 2022
Non-interest checking	$	1,247,253	$	1,361,588
Interest-bearing checking	641,194		678,715
Savings	297,790		326,666
Money market	1,454,858		1,381,645
CDs $250,000 or less	222,116		187,758
CDs greater than $250,000	152,945		99,434
Deposits	$	4,016,156	$	4,035,806

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Borrowed Funds (Tables)

3 Months Ended

Mar. 31, 2023

Debt Disclosure [Abstract]

Schedule of Borrowed Funds Maturity

Borrowed funds at March 31, 2023 and December 31, 2022 are summarized, as follows:

	March 31, 2023				December 31, 2022
(Dollars in thousands)	Balance		Rate		Balance		Rate
Over 5 years	$	3,199	1.55	%	$	3,216	1.55	%
Total borrowed funds	$	3,199	1.55	%	$	3,216	1.55	%

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Derivatives and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2023

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivatives, Fair Value and Classification

The tables below present a summary of the Company's derivative financial instruments, notional amounts and fair values at the periods presented:

	March 31, 2023
(Dollars in thousands)	Asset Notional Amount		Asset Derivatives(1)		Liability Notional Amount		Liability Derivatives(1)
Derivatives not subject to hedge accounting
Interest-rate contracts - pay floating, receive fixed	$	—	$	—	$	7,714	$	624
Interest-rate contracts - pay fixed, receive floating	7,714		624		—		—
Risk participation agreements sold	—		—		46,907		98
Total back-to-back interest-rate swaps	$	7,714	$	624	$	54,621	$	722

	December 31, 2022
(Dollars in thousands)	Asset Notional Amount		Asset Derivatives(1)		Liability Notional Amount		Liability Derivatives(1)
Derivatives not subject to hedge accounting
Interest-rate contracts - pay floating, receive fixed	$	—	$	—	$	7,777	$	782
Interest-rate contracts - pay fixed, receive floating	7,777		782		—		—
Risk participation agreements sold	—		—		24,660		73
Total back-to-back interest-rate swaps	$	7,777	$	782	$	32,437	$	855

__________________________________________

(1)     Accrued interest balances related to the Company's interest-rate swaps are not included in the fair values above and are immaterial.

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Regulatory Capital Requirements (Tables)

3 Months Ended

Mar. 31, 2023

Compliance with Regulatory Capital Requirements under Banking Regulations [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations

The Company's and the Bank's actual capital amounts and ratios are presented as of March 31, 2023 and December 31, 2022 in the tables below:

	Actual				Minimum Capital for Capital Adequacy Purposes(1)				Minimum Capital to be Well Capitalized(2)
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of March 31, 2023
The Company
Total Capital to risk-weighted assets ("RWA")	$	485,903	13.55	%	$	286,953	8.00	%	N/A		N/A
Tier 1 Capital to RWA	381,621		10.64	%	215,215		6.00	%	N/A		N/A
Tier 1 Capital to average assets ("AA") or Leverage Ratio	381,621		8.47	%	180,292		4.00	%	N/A		N/A
Common Equity Tier 1 Capital to RWA	381,621		10.64	%	161,411		4.50	%	N/A		N/A
The Bank
Total Capital to RWA	$	486,014	13.55	%	$	286,953	8.00	%	$	358,692	10.00	%
Tier 1 Capital to RWA	440,993		12.29	%	215,215		6.00	%	286,953		8.00	%
Tier 1 Capital to AA, Leverage Ratio	440,993		9.78	%	180,292		4.00	%	225,365		5.00	%
Common Equity Tier 1 Capital to RWA	440,993		12.29	%	161,411		4.50	%	233,150		6.50	%

	Actual				Minimum Capital for Capital Adequacy Purposes(1)				Minimum Capital to be Well Capitalized(2)
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
As of December 31, 2022
The Company
Total Capital to RWA	$	476,307	13.49	%	$	282,567	8.00	%	N/A		N/A
Tier 1 Capital to RWA	372,817		10.56	%	211,926		6.00	%	N/A		N/A
Tier 1 Capital to AA, Leverage Ratio	372,817		8.10	%	184,194		4.00	%	N/A		N/A
Common Equity Tier 1 Capital to RWA	372,817		10.56	%	158,944		4.50	%	N/A		N/A
The Bank
Total Capital to RWA	$	475,668	13.47	%	$	282,567	8.00	%	$	353,209	10.00	%
Tier 1 Capital to RWA	431,359		12.21	%	211,926		6.00	%	282,567		8.00	%
Tier 1 Capital to AA, Leverage Ratio	431,359		9.37	%	184,194		4.00	%	230,243		5.00	%
Common Equity Tier 1 Capital to RWA	431,359		12.21	%	158,944		4.50	%	229,586		6.50	%

__________________________________________

(1)Before application of the capital conservation buffer of 2.50% as of March 31, 2023, and December 31, 2022. See discussion      below.

(2)For the Bank to qualify as "well-capitalized," it must maintain at least the minimum ratios listed under the regulatory prompt corrective action framework. This framework does not apply to the Company.

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Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2023

Equity [Abstract]

Schedule of Comprehensive Income (Loss) Reconciliation of Changes

The following table presents a reconciliation of the changes in the components of other comprehensive income (loss) for the dates indicated, including the amount of income tax (expense) benefit allocated to each component of other comprehensive income (loss):

	Three months ended March 31, 2023						Three months ended March 31, 2022
(Dollars in thousands)	Pre-Tax		Tax Benefit (Expense)		After Tax Amount		Pre-Tax		Tax Benefit (Expense)		After Tax Amount
Change in fair value of debt securities	$	26,160	$	(5,912)	$	20,248	$	(56,974)	$	12,840	$	(44,134)
Less: net security gains reclassified into non-interest income	—		—		—		1,062		(234)		828
Net change in fair value of debt securities	26,160		(5,912)		20,248		(58,036)		13,074		(44,962)
Total other comprehensive income (loss), net	$	26,160	$	(5,912)	$	20,248	$	(58,036)	$	13,074	$	(44,962)

Schedule of Accumulated Other Comprehensive Income (Loss)

Information on the Company's accumulated other comprehensive income (loss), net of tax, is comprised of the following components as of the periods indicated:

	Three months ended March 31, 2023				Three months ended March 31, 2022
(Dollars in thousands)	Unrealized Gains (Losses) on Debt Securities		Total		Unrealized Gains (Losses) on Debt Securities		Total
Accumulated other comprehensive (loss) income - beginning balance	$	(96,207)	$	(96,207)	$	4,662	$	4,662
Total other comprehensive loss, net	20,248		20,248		(44,962)		(44,962)
Accumulated other comprehensive loss - ending balance	$	(75,959)	$	(75,959)	$	(40,300)	$	(40,300)

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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The table below provides a summary of the options granted, including the weighted average fair value, the fair value as a percentage of the market value of the stock at the date of grant and the average assumptions used in the model for the prior period:

	Three months ended
	March 31, 2022
Options granted	16,797
Term in years	10
Weighted average assumptions used in the fair value model:
Expected volatility	44		%
Expected dividend yield	3.05		%
Expected life in years	6.5
Risk-free interest-rate	2.19		%
Weighted average market price on date of grants	$	38.58
Per share weighted average fair value	$	14.40
Fair value as a percentage of market value at grant date	37		%

Schedule of Restricted Stock Awards Granted

The table below provides a summary of restricted stock awards granted during the periods indicated:

	Three months ended March 31,
Restricted Stock Awards (number of underlying shares)	2023		2022
Two-year vesting	—		8,823
Four-year vesting	32,719		21,554
Performance-based vesting	31,270		22,254
Total restricted stock awards granted	63,989		52,631
Weighted average grant date fair value	$	32.32	$	38.58

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2023

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares

The table below presents basic earnings per share and the increase in average shares outstanding, using the treasury stock method, for the diluted earnings per share calculation for the periods indicated:

	Three months ended March 31,
	2023	2022
Basic weighted average common shares outstanding	12,155,320	12,055,991
Dilutive shares	38,436	63,845
Diluted weighted average common shares outstanding	12,193,756	12,119,836

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2023

Fair Value Disclosures [Abstract]

Fair Value, Assets Measured on Recurring and Nonrecurring Basis

The following tables summarize significant assets and liabilities carried at fair value and placement in the fair value hierarchy at the dates specified:

	March 31, 2023
			Fair Value Measurements Using:
(Dollars in thousands)	Fair Value		(Level 1)		(Level 2)		(Level 3)
Assets measured on a recurring basis:
Debt securities	$	825,520	$	—	$	825,520	$	—
Equity securities	—		—		—		—
FHLB stock	2,343		—		2,343		—
Interest-rate swaps	624		—		624		—
Assets measured on a non-recurring basis:
Individually evaluated loans (collateral dependent)	954		—		—		954
Liabilities measured on a recurring basis:
Interest-rate swaps	$	624	$	—	$	624	$	—
RPA sold	98		—		98		—

 

	December 31, 2022
			Fair Value Measurements Using:
(Dollars in thousands)	Fair Value		(Level 1)		(Level 2)		(Level 3)
Assets measured on a recurring basis:
Debt securities	$	816,102	$	—	$	816,102	$	—
Equity securities	4,269		4,269		—		—
FHLB stock	2,343		—		2,343		—
Interest-rate swaps	782		—		782		—
Assets measured on a non-recurring basis:
Individually evaluated loans (collateral dependent)	740		—		—		740
Liabilities measured on a recurring basis:
Interest-rate swaps	$	782	$	—	$	782	$	—
RPA sold	73		—		73		—

Quantitative Information About Significant Unobservable Inputs for Fair Value Measurements

The following table presents additional quantitative information about assets measured at fair value on a non-recurring basis for which the Company utilized Level 3 inputs (significant unobservable inputs for situations in which there is little, if any, market activity for the asset or liability) to determine fair value as of March 31, 2023 and December 31, 2022:

	Fair Value
(Dollars in thousands)	March 31, 2023		December 31, 2022		Valuation Technique	Unobservable Input	Unobservable Input Value or Range
Assets measured on a non-recurring basis:
Individually evaluated loans (collateral dependent)	$	954	$	740	Appraisal of collateral	Appraisal adjustments(1)	15% - 50%

__________________________________________

(1)Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses.

Fair Value, by Balance Sheet Grouping

Financial instruments for which the fair value is disclosed but not recognized on the Company's Consolidated Balance Sheets are summarized below. The table includes the carrying value, estimated fair value and its placement in the fair value hierarchy as follows:

	March 31, 2023
					Fair Value Measurement
(Dollars in thousands)	Carrying Value		Fair Value		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial assets:
Loans held for sale	$	362	$	358	$	—	$	358	$	—
Loans, net	3,175,154		3,017,247		—		—		3,017,247
Financial liabilities:
CDs	375,061		370,316		—		370,316		—
Borrowed funds	3,199		2,191		—		2,191		—
Subordinated debt	59,261		55,671		—		55,671		—

	December 31, 2022
					Fair Value Measurement
(Dollars in thousands)	Carrying Value		Fair Value		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial assets:
Loans, net	$	3,127,878	$	2,952,778	$	—	$	—	$	2,952,778
Financial liabilities:
CDs	287,192		281,800		—		281,800		—
Borrowed funds	3,216		2,006		—		2,006		—
Subordinated debt	59,182		55,407		—		55,407		—

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Supplemental Cash Flow (Tables)

3 Months Ended

Mar. 31, 2023

Supplemental Cash Flow Elements [Abstract]

Schedule of Cash Flow, Supplemental Disclosures

The supplemental cash flow information for the three months ended March 31, 2023 and March 31, 2022 is as follows:

	Three months ended March 31,
(Dollars in thousands)	2023		2022
Supplemental financial data:
Cash paid for: interest	$	6,931	$	2,222
Cash paid for: income taxes	4,455		5,060
Cash paid for: lease liability	340		331
Supplemental schedule of non-cash activity:
Net purchases of investment securities not yet settled	—		1,500

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Summary of Significant Accounting Policies (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) segment
Tax Credit Carryforward [Line Items]
Reportable operating segments | segment	1
Federal tax credits, first three years, percent	5.00%
Federal tax credits, next four years, percent	6.00%
Consolidated Entity, Excluding Consolidated VIE
Tax Credit Carryforward [Line Items]
Available to investmment	7 years
Amortization	$ 44
Investment tax credit	153
Consolidated Entity, Excluding Consolidated VIE | NMTC Investment Fund
Tax Credit Carryforward [Line Items]
Noncontrolling Interest in Variable Interest Entity	3,700
Federal tax credits	$ 4,800

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Investment Securities - Investments Reconciliation (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 923,485	$ 940,227
Unrealized Gains	550	125
Unrealized Losses	98,515	124,250
Fair Value	825,520	816,102
Federal agency obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,012	5,014
Unrealized Gains	1	0
Unrealized Losses	0	37
Fair Value	5,013	4,977
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	45,955	45,942
Unrealized Gains	0	0
Unrealized Losses	2,045	2,691
Fair Value	43,910	43,251
Federal agency CMO
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	461,436	474,777
Unrealized Gains	203	3
Unrealized Losses	54,796	67,798
Fair Value	406,843	406,982
Federal agency MBS
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	23,892	24,172
Unrealized Gains	64	27
Unrealized Losses	2,776	3,178
Fair Value	21,180	21,021
Taxable municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	287,421	287,435
Unrealized Gains	36	29
Unrealized Losses	37,173	48,187
Fair Value	250,284	239,277
Tax-exempt municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	82,182	84,457
Unrealized Gains	246	66
Unrealized Losses	485	870
Fair Value	81,943	83,653
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,636	6,480
Unrealized Gains	0	0
Unrealized Losses	109	186
Fair Value	5,527	6,294
Subordinated corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	11,951	11,950
Unrealized Gains	0	0
Unrealized Losses	1,131	1,303
Fair Value	$ 10,820	$ 10,647

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Investment Securities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Accrued interest related to AFS debt securities	$ 4,800		$ 4,000
Callable debt securities, fair value	162,100
Sale of debt securities	0	$ 32,715
Equity securities at fair value	5,375		4,269
Collateral Pledged
Debt Securities, Available-for-sale [Line Items]
Debt securities, pledged as collateral	$ 814,700		$ 804,200

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Investment Securities - Debt Securities Continuous Loss Position (Details) $ in Thousands	Mar. 31, 2023 USD ($) investment	Dec. 31, 2022 USD ($) investment
Debt Securities, Available-for-sale [Line Items]
Temporarily impaired debt securities, less than 12 months, fair value	$ 104,848	$ 354,291
Temporarily impaired debt securities, less than 12 months, unrealized losses	1,876	26,157
Temporarily impaired debt securities, 12 months or longer, fair value	644,564	431,933
Temporarily impaired debt securities, 12 months or longer, unrealized losses	96,639	98,093
Temporarily impaired debt securities, fair value	749,412	786,224
Temporarily impaired debt securities, unrealized losses	$ 98,515	$ 124,250
Number of holdings | investment	498	542
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Temporarily impaired debt securities, less than 12 months, fair value	$ 0	$ 2,878
Temporarily impaired debt securities, less than 12 months, unrealized losses	0	109
Temporarily impaired debt securities, 12 months or longer, fair value	43,910	40,374
Temporarily impaired debt securities, 12 months or longer, unrealized losses	2,045	2,582
Temporarily impaired debt securities, fair value	43,910	43,252
Temporarily impaired debt securities, unrealized losses	$ 2,045	$ 2,691
Number of holdings | investment	6	6
Federal agency obligations
Debt Securities, Available-for-sale [Line Items]
Temporarily impaired debt securities, less than 12 months, fair value		$ 4,977
Temporarily impaired debt securities, less than 12 months, unrealized losses		37
Temporarily impaired debt securities, 12 months or longer, fair value		0
Temporarily impaired debt securities, 12 months or longer, unrealized losses		0
Temporarily impaired debt securities, fair value		4,977
Temporarily impaired debt securities, unrealized losses		$ 37
Number of holdings | investment		1
Federal agency CMO
Debt Securities, Available-for-sale [Line Items]
Temporarily impaired debt securities, less than 12 months, fair value	$ 46,380	$ 164,391
Temporarily impaired debt securities, less than 12 months, unrealized losses	844	13,004
Temporarily impaired debt securities, 12 months or longer, fair value	335,270	233,051
Temporarily impaired debt securities, 12 months or longer, unrealized losses	53,952	54,794
Temporarily impaired debt securities, fair value	381,650	397,442
Temporarily impaired debt securities, unrealized losses	$ 54,796	$ 67,798
Number of holdings | investment	98	102
Federal agency MBS
Debt Securities, Available-for-sale [Line Items]
Temporarily impaired debt securities, less than 12 months, fair value	$ 0	$ 9,923
Temporarily impaired debt securities, less than 12 months, unrealized losses	0	797
Temporarily impaired debt securities, 12 months or longer, fair value	19,217	9,165
Temporarily impaired debt securities, 12 months or longer, unrealized losses	2,776	2,381
Temporarily impaired debt securities, fair value	19,217	19,088
Temporarily impaired debt securities, unrealized losses	$ 2,776	$ 3,178
Number of holdings | investment	11	11
Taxable municipal securities
Debt Securities, Available-for-sale [Line Items]
Temporarily impaired debt securities, less than 12 months, fair value	$ 20,486	$ 93,345
Temporarily impaired debt securities, less than 12 months, unrealized losses	729	10,411
Temporarily impaired debt securities, 12 months or longer, fair value	226,761	144,903
Temporarily impaired debt securities, 12 months or longer, unrealized losses	36,444	37,776
Temporarily impaired debt securities, fair value	247,247	238,248
Temporarily impaired debt securities, unrealized losses	$ 37,173	$ 48,187
Number of holdings | investment	272	273
Tax-exempt municipal securities
Debt Securities, Available-for-sale [Line Items]
Temporarily impaired debt securities, less than 12 months, fair value	$ 31,239	$ 66,277
Temporarily impaired debt securities, less than 12 months, unrealized losses	155	870
Temporarily impaired debt securities, 12 months or longer, fair value	9,801	0
Temporarily impaired debt securities, 12 months or longer, unrealized losses	330	0
Temporarily impaired debt securities, fair value	41,040	66,277
Temporarily impaired debt securities, unrealized losses	$ 485	$ 870
Number of holdings | investment	80	112
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Temporarily impaired debt securities, less than 12 months, fair value	$ 4,857	$ 6,294
Temporarily impaired debt securities, less than 12 months, unrealized losses	82	186
Temporarily impaired debt securities, 12 months or longer, fair value	670	0
Temporarily impaired debt securities, 12 months or longer, unrealized losses	27	0
Temporarily impaired debt securities, fair value	5,527	6,294
Temporarily impaired debt securities, unrealized losses	$ 109	$ 186
Number of holdings | investment	25	31
Subordinated corporate bonds
Debt Securities, Available-for-sale [Line Items]
Temporarily impaired debt securities, less than 12 months, fair value	$ 1,886	$ 6,206
Temporarily impaired debt securities, less than 12 months, unrealized losses	66	743
Temporarily impaired debt securities, 12 months or longer, fair value	8,935	4,440
Temporarily impaired debt securities, 12 months or longer, unrealized losses	1,065	560
Temporarily impaired debt securities, fair value	10,821	10,646
Temporarily impaired debt securities, unrealized losses	$ 1,131	$ 1,303
Number of holdings | investment	6	6

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Investment Securities - Debt Securities Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Amortized Cost
Due in one year or less	$ 43,577
Due after one, but within five years	137,025
Due after five, but within ten years	304,972
Due after ten years	437,911
Amortized Cost	923,485	$ 940,227
Fair Value
Due in one year or less	42,648
Due after one, but within five years	133,624
Due after five, but within ten years	267,490
Due after ten years	381,758
Fair Value	$ 825,520	$ 816,102

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Investment Securities - Debt Securities Sales (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Amortized cost of debt securities sold	$ 0	$ 31,653
Gross realized gains on sales	0	1,062
Gross realized losses on sales	0	0
Total proceeds from sales of debt securities	$ 0	$ 32,715

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Investment Securities - Equity Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Net losses recognized during the period on equity securities	$ (16)	$ (67)
Less: Net gains recognized on equity securities sold during the period	0	0
Unrealized losses recognized during the reporting period on equity securities still held at the end of the period	$ (16)	$ (67)

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Loans - Balance by Class of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Loan Portfolio Classifications, Adoption of CECL
Total loans	$ 3,230,156	$ 3,180,518
ACL for loans	(55,002)	(52,640)
Net loans	3,175,154	3,127,878
Commercial
Loan Portfolio Classifications, Adoption of CECL
Total loans	2,810,143	2,759,949
Commercial real estate
Loan Portfolio Classifications, Adoption of CECL
Total loans	1,929,544	1,921,410
Commercial and industrial
Loan Portfolio Classifications, Adoption of CECL
Total loans	423,864	414,490
Commercial construction
Loan Portfolio Classifications, Adoption of CECL
Total loans	456,735	424,049
Retail
Loan Portfolio Classifications, Adoption of CECL
Total loans	420,013	420,569
Residential mortgages
Loan Portfolio Classifications, Adoption of CECL
Total loans	335,834	332,632
Home equity loans and lines
Loan Portfolio Classifications, Adoption of CECL
Total loans	75,809	79,807
Consumer
Loan Portfolio Classifications, Adoption of CECL
Total loans	$ 8,370	$ 8,130

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Loans - Loan Categories Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Schedule of Loans by Loan Classification [Line Items]
Loan origination fees	$ 5.1	$ 5.2
Accrued interest receivable on loans	13.7	13.1
Commercial
Schedule of Loans by Loan Classification [Line Items]
Participation loans amount	101.7	94.8
Participations loans sold that are still serviced amount	58.3	59.1
Residential mortgages
Schedule of Loans by Loan Classification [Line Items]
Amount of loans serviced for others	$ 8.7	$ 8.9

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Loans - Loans Serving as Collateral (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total loans	$ 3,230,156	$ 3,180,518
Asset Pledged as Collateral without Right | Federal Home Loan Bank Advances
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total loans	742,079	462,577
Commercial real estate
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total loans	1,929,544	1,921,410
Commercial real estate | Asset Pledged as Collateral without Right | Federal Home Loan Bank Advances
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total loans	393,513	113,830
Residential mortgages
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total loans	335,834	332,632
Residential mortgages | Asset Pledged as Collateral without Right | Federal Home Loan Bank Advances
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total loans	314,595	309,023
Home equity
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total loans	75,809	79,807
Home equity | Asset Pledged as Collateral without Right | Federal Home Loan Bank Advances
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total loans	$ 33,971	$ 39,724

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ACL for Loans - Credit Risk Indicators (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	$ 79,808	$ 718,722
Year two	731,087	681,657
Year three	685,865	323,871
Year four	315,875	307,322
Year five	299,233	158,322
Prior	847,189	710,094
Revolving Loans	269,152	274,215
Revolving Loans Converted to Term	1,947	6,315
Total loans	3,230,156	3,180,518
Current period charge-offs
Year one	6
Year two	11
Year three	0
Year four	0
Year five	0
Prior	72
Revolving Loans	0
Revolving Loans Converted to Term	0
Total	89
Commercial real estate
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	32,192	391,515
Year two	389,368	382,060
Year three	375,322	204,125
Year four	200,608	220,331
Year five	222,028	117,620
Prior	708,711	604,212
Revolving Loans	1,315	1,347
Revolving Loans Converted to Term	0	200
Total loans	1,929,544	1,921,410
Current period charge-offs
Year one	0
Year two	0
Year three	0
Year four	0
Year five	0
Prior	0
Revolving Loans	0
Revolving Loans Converted to Term	0
Total	0
Commercial real estate | Pass
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	32,192	391,515
Year two	389,368	381,771
Year three	375,042	204,125
Year four	200,608	218,664
Year five	220,511	114,175
Prior	677,333	577,354
Revolving Loans	1,315	1,347
Revolving Loans Converted to Term	0	200
Total loans	1,896,369	1,889,151
Commercial real estate | Special mention
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	507
Year five	503	2,041
Prior	19,068	16,248
Revolving Loans	0	0
Revolving Loans Converted to Term	0	0
Total loans	19,571	18,796
Commercial real estate | Substandard
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	0	0
Year two	0	289
Year three	280	0
Year four	0	1,160
Year five	1,014	1,404
Prior	12,310	10,610
Revolving Loans	0	0
Revolving Loans Converted to Term	0	0
Total loans	13,604	13,463
Commercial and industrial
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	18,135	59,824
Year two	62,802	53,078
Year three	53,057	33,027
Year four	31,245	29,312
Year five	27,358	13,568
Prior	54,025	44,327
Revolving Loans	175,341	177,766
Revolving Loans Converted to Term	1,901	3,588
Total loans	423,864	414,490
Current period charge-offs
Year one	5
Year two	6
Year three	0
Year four	0
Year five	0
Prior	72
Revolving Loans	0
Revolving Loans Converted to Term	0
Total	83
Commercial and industrial | Pass
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	18,135	59,824
Year two	62,802	53,059
Year three	53,038	33,027
Year four	31,245	29,293
Year five	27,351	13,364
Prior	53,141	43,724
Revolving Loans	170,851	171,670
Revolving Loans Converted to Term	976	3,235
Total loans	417,539	407,196
Commercial and industrial | Special mention
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	11
Year five	0	66
Prior	282	278
Revolving Loans	2,192	3,132
Revolving Loans Converted to Term	925	0
Total loans	3,399	3,487
Commercial and industrial | Substandard
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	0	0
Year two	0	19
Year three	19	0
Year four	0	8
Year five	7	138
Prior	602	325
Revolving Loans	2,298	2,964
Revolving Loans Converted to Term	0	353
Total loans	2,926	3,807
Commercial construction
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	22,313	151,107
Year two	162,026	169,843
Year three	182,219	35,651
Year four	33,775	35,089
Year five	27,816	7,729
Prior	7,533	3,379
Revolving Loans	21,053	19,778
Revolving Loans Converted to Term	0	1,473
Total loans	456,735	424,049
Current period charge-offs
Year one	0
Year two	0
Year three	0
Year four	0
Year five	0
Prior	0
Revolving Loans	0
Revolving Loans Converted to Term	0
Total	0
Commercial construction | Pass
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	22,313	151,107
Year two	162,026	169,549
Year three	182,219	35,651
Year four	33,775	31,189
Year five	23,818	7,729
Prior	7,533	3,379
Revolving Loans	21,053	19,778
Revolving Loans Converted to Term	0	1,473
Total loans	452,737	419,855
Commercial construction | Special mention
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	3,900
Year five	3,998	0
Prior	0	0
Revolving Loans	0	0
Revolving Loans Converted to Term	0	0
Total loans	3,998	3,900
Commercial construction | Substandard
Financing Receivable, Credit Quality Indicators [Line Items]
Year one		0
Year two		294
Year three		0
Year four		0
Year five		0
Prior		0
Revolving Loans		0
Revolving Loans Converted to Term		0
Total loans		294
Residential mortgages
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	6,516	112,804
Year two	113,213	73,955
Year three	72,701	49,549
Year four	48,817	21,200
Year five	20,760	18,799
Prior	73,827	56,325
Revolving Loans	0	0
Revolving Loans Converted to Term	0	0
Total loans	335,834	332,632
Current period charge-offs
Year one	0
Year two	0
Year three	0
Year four	0
Year five	0
Prior	0
Revolving Loans	0
Revolving Loans Converted to Term	0
Total	0
Residential mortgages | Pass
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	6,516	112,804
Year two	113,213	73,955
Year three	72,701	49,549
Year four	48,817	20,140
Year five	19,705	18,799
Prior	72,358	54,620
Revolving Loans	0	0
Revolving Loans Converted to Term	0	0
Total loans	333,310	329,867
Residential mortgages | Special mention
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	0
Year five	0	0
Prior	113	325
Revolving Loans	0	0
Revolving Loans Converted to Term	0	0
Total loans	113	325
Residential mortgages | Substandard
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	1,060
Year five	1,055	0
Prior	1,356	1,380
Revolving Loans	0	0
Revolving Loans Converted to Term	0	0
Total loans	2,411	2,440
Home equity loans and lines
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	0	328
Year two	421	869
Year three	861	456
Year four	453	345
Year five	338	0
Prior	2,247	1,431
Revolving Loans	71,443	75,324
Revolving Loans Converted to Term	46	1,054
Total loans	75,809	79,807
Current period charge-offs
Year one	0
Year two	0
Year three	0
Year four	0
Year five	0
Prior	0
Revolving Loans	0
Revolving Loans Converted to Term	0
Total	0
Home equity loans and lines | Pass
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	0	328
Year two	421	596
Year three	588	456
Year four	453	345
Year five	338	0
Prior	2,152	1,220
Revolving Loans	71,443	75,324
Revolving Loans Converted to Term	46	1,054
Total loans	75,441	79,323
Home equity loans and lines | Substandard
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	0	0
Year two	0	273
Year three	273	0
Year four	0	0
Year five	0	0
Prior	95	211
Revolving Loans	0	0
Revolving Loans Converted to Term	0	0
Total loans	368	484
Consumer
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	652	3,144
Year two	3,257	1,852
Year three	1,705	1,063
Year four	977	1,045
Year five	933	606
Prior	846	420
Revolving Loans	0	0
Revolving Loans Converted to Term	0	0
Total loans	8,370	8,130
Current period charge-offs
Year one	1
Year two	5
Year three	0
Year four	0
Year five	0
Prior	0
Revolving Loans	0
Revolving Loans Converted to Term	0
Total	6
Consumer | Pass
Financing Receivable, Credit Quality Indicators [Line Items]
Year one	652	3,144
Year two	3,257	1,852
Year three	1,705	1,063
Year four	977	1,045
Year five	933	606
Prior	846	420
Revolving Loans	0	0
Revolving Loans Converted to Term	0	0
Total loans	$ 8,370	$ 8,130

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ACL for Loans - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 3,230,156,000		$ 3,180,518,000
Adversely classified loans to all loans, ratio	1.44%		1.48%
The ratio of non-accrual loans to total loans	0.23%		0.19%
Total accruing impaired loans	$ 15,600,000		$ 19,500,000
Total non accruing impaired loans	7,200,000		5,700,000
Post- modification Outstanding Recorded Investment	0	$ 48,000
Post-modification outstanding, subsequent charge-offs		$ 0
Allowance for credit losses	$ 55,002,000		$ 52,640,000
Allowance for credit losses to total loans ratio	1.70%		1.66%
Criticized
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 46,400,000		$ 47,000,000
Unfunded Loan Commitment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses	4,700,000		4,300,000
Collateral Pledged
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 22,800,000		$ 25,200,000

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ACL for Loans - Past Due and Non-Accrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Aging of Financing Receivables
Total loans	$ 3,230,156	$ 3,180,518
Total Non-accrual Loans	7,532	6,122
Non-accrual Loans without a Specific Reserve	5,897	4,702
Non-accrual Loans with a Specific Reserve	1,635	1,420
Related Specific Reserve	668	680
Total Past Due Loans
Schedule of Aging of Financing Receivables
Total loans	7,686	9,045
30-59 Days Past Due
Schedule of Aging of Financing Receivables
Total loans	3,359	5,319
60-89 Days Past Due
Schedule of Aging of Financing Receivables
Total loans	2,085	1,362
Past Due 90 Days or More
Schedule of Aging of Financing Receivables
Total loans	2,242	2,364
Current Loans
Schedule of Aging of Financing Receivables
Total loans	3,222,470	3,171,473
Commercial real estate
Schedule of Aging of Financing Receivables
Total loans	1,929,544	1,921,410
Total Non-accrual Loans	4,926	3,355
Non-accrual Loans without a Specific Reserve	3,912	2,317
Non-accrual Loans with a Specific Reserve	1,014	1,038
Related Specific Reserve	274	298
Commercial real estate | Total Past Due Loans
Schedule of Aging of Financing Receivables
Total loans	5,064	5,717
Commercial real estate | 30-59 Days Past Due
Schedule of Aging of Financing Receivables
Total loans	2,589	2,818
Commercial real estate | 60-89 Days Past Due
Schedule of Aging of Financing Receivables
Total loans	384	1,268
Commercial real estate | Past Due 90 Days or More
Schedule of Aging of Financing Receivables
Total loans	2,091	1,631
Commercial real estate | Current Loans
Schedule of Aging of Financing Receivables
Total loans	1,924,480	1,915,693
Commercial and industrial
Schedule of Aging of Financing Receivables
Total loans	423,864	414,490
Total Non-accrual Loans	673	730
Non-accrual Loans without a Specific Reserve	325	348
Non-accrual Loans with a Specific Reserve	348	382
Related Specific Reserve	309	382
Commercial and industrial | Total Past Due Loans
Schedule of Aging of Financing Receivables
Total loans	885	1,042
Commercial and industrial | 30-59 Days Past Due
Schedule of Aging of Financing Receivables
Total loans	206	786
Commercial and industrial | 60-89 Days Past Due
Schedule of Aging of Financing Receivables
Total loans	601	39
Commercial and industrial | Past Due 90 Days or More
Schedule of Aging of Financing Receivables
Total loans	78	217
Commercial and industrial | Current Loans
Schedule of Aging of Financing Receivables
Total loans	422,979	413,448
Commercial construction
Schedule of Aging of Financing Receivables
Total loans	456,735	424,049
Total Non-accrual Loans	0	294
Non-accrual Loans without a Specific Reserve	0	294
Non-accrual Loans with a Specific Reserve	0	0
Related Specific Reserve	0	0
Commercial construction | Total Past Due Loans
Schedule of Aging of Financing Receivables
Total loans	0	706
Commercial construction | 30-59 Days Past Due
Schedule of Aging of Financing Receivables
Total loans	0	412
Commercial construction | 60-89 Days Past Due
Schedule of Aging of Financing Receivables
Total loans	0	0
Commercial construction | Past Due 90 Days or More
Schedule of Aging of Financing Receivables
Total loans	0	294
Commercial construction | Current Loans
Schedule of Aging of Financing Receivables
Total loans	456,735	423,343
Residential mortgages
Schedule of Aging of Financing Receivables
Total loans	335,834	332,632
Total Non-accrual Loans	1,565	1,532
Non-accrual Loans without a Specific Reserve	1,565	1,532
Non-accrual Loans with a Specific Reserve	0	0
Related Specific Reserve	0	0
Residential mortgages | Total Past Due Loans
Schedule of Aging of Financing Receivables
Total loans	1,486	1,323
Residential mortgages | 30-59 Days Past Due
Schedule of Aging of Financing Receivables
Total loans	431	1,119
Residential mortgages | 60-89 Days Past Due
Schedule of Aging of Financing Receivables
Total loans	1,055	55
Residential mortgages | Past Due 90 Days or More
Schedule of Aging of Financing Receivables
Total loans	0	149
Residential mortgages | Current Loans
Schedule of Aging of Financing Receivables
Total loans	334,348	331,309
Home equity loans and lines
Schedule of Aging of Financing Receivables
Total loans	75,809	79,807
Total Non-accrual Loans	368	211
Non-accrual Loans without a Specific Reserve	95	211
Non-accrual Loans with a Specific Reserve	273	0
Related Specific Reserve	85	0
Home equity loans and lines | Total Past Due Loans
Schedule of Aging of Financing Receivables
Total loans	192	236
Home equity loans and lines | 30-59 Days Past Due
Schedule of Aging of Financing Receivables
Total loans	119	163
Home equity loans and lines | 60-89 Days Past Due
Schedule of Aging of Financing Receivables
Total loans	0	0
Home equity loans and lines | Past Due 90 Days or More
Schedule of Aging of Financing Receivables
Total loans	73	73
Home equity loans and lines | Current Loans
Schedule of Aging of Financing Receivables
Total loans	75,617	79,571
Consumer
Schedule of Aging of Financing Receivables
Total loans	8,370	8,130
Total Non-accrual Loans	0	0
Non-accrual Loans without a Specific Reserve	0	0
Non-accrual Loans with a Specific Reserve	0	0
Related Specific Reserve	0	0
Consumer | Total Past Due Loans
Schedule of Aging of Financing Receivables
Total loans	59	21
Consumer | 30-59 Days Past Due
Schedule of Aging of Financing Receivables
Total loans	14	21
Consumer | 60-89 Days Past Due
Schedule of Aging of Financing Receivables
Total loans	45	0
Consumer | Past Due 90 Days or More
Schedule of Aging of Financing Receivables
Total loans	0	0
Consumer | Current Loans
Schedule of Aging of Financing Receivables
Total loans	$ 8,311	$ 8,109

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ACL for Loans - Impaired Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	$ 27,958	$ 30,516
Total Recorded Investment in Collateral Dependent Loans	22,771	25,198
Recorded Investment without a Specific Reserve	21,446	24,160
Recorded Investment with a Specific Reserve	1,325	1,038
Related Specific Reserve	371	298
Commercial real estate
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	22,783	24,530
Total Recorded Investment in Collateral Dependent Loans	20,163	21,916
Recorded Investment without a Specific Reserve	19,149	20,878
Recorded Investment with a Specific Reserve	1,014	1,038
Related Specific Reserve	274	298
Commercial and industrial
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	2,867	3,210
Total Recorded Investment in Collateral Dependent Loans	562	863
Recorded Investment without a Specific Reserve	524	863
Recorded Investment with a Specific Reserve	38	0
Related Specific Reserve	12	0
Commercial construction
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	0	294
Total Recorded Investment in Collateral Dependent Loans	0	294
Recorded Investment without a Specific Reserve	0	294
Recorded Investment with a Specific Reserve	0	0
Related Specific Reserve	0	0
Residential mortgages
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	1,873	2,096
Total Recorded Investment in Collateral Dependent Loans	1,678	1,914
Recorded Investment without a Specific Reserve	1,678	1,914
Recorded Investment with a Specific Reserve	0	0
Related Specific Reserve	0	0
Home equity loans and lines
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	435	386
Total Recorded Investment in Collateral Dependent Loans	368	211
Recorded Investment without a Specific Reserve	95	211
Recorded Investment with a Specific Reserve	273	0
Related Specific Reserve	85	0
Consumer
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	0	0
Total Recorded Investment in Collateral Dependent Loans	0	0
Recorded Investment without a Specific Reserve	0	0
Recorded Investment with a Specific Reserve	0	0
Related Specific Reserve	$ 0	$ 0

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ACL for Loans - Loan Modifications (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Total Past Due Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	$ 1,014
30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Past Due 90 Days or More
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	1,014
Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	643
Payment Deferrals
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	$ 319
% of Loan Class Total	0.01%
Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Payment Deferrals	6 months
Commercial real estate | Total Past Due Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	$ 1,014
Commercial real estate | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Commercial real estate | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Commercial real estate | Past Due 90 Days or More
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	1,014
Commercial real estate | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	406
Commercial real estate | Payment Deferrals
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	$ 281
% of Loan Class Total	0.01%
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted-Average Payment Deferrals	6 months
Commercial and industrial | Total Past Due Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	$ 0
Commercial and industrial | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Commercial and industrial | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Commercial and industrial | Past Due 90 Days or More
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Commercial and industrial | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	237
Commercial and industrial | Payment Deferrals
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	$ 38
% of Loan Class Total	0.01%
Commercial construction | Total Past Due Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	$ 0
Commercial construction | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Commercial construction | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Commercial construction | Past Due 90 Days or More
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Commercial construction | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Residential mortgages | Total Past Due Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Residential mortgages | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Residential mortgages | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Residential mortgages | Past Due 90 Days or More
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Residential mortgages | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Home equity loans and lines | Total Past Due Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Home equity loans and lines | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Home equity loans and lines | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Home equity loans and lines | Past Due 90 Days or More
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Home equity loans and lines | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Consumer | Total Past Due Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Consumer | 30-59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Consumer | 60-89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Consumer | Past Due 90 Days or More
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	0
Consumer | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Interest Rate Reductions	$ 0

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ACL for Loans - Troubled Debt Restructures and Prior Period Trouble Debt Restructures (Details)	3 Months Ended
	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2022 USD ($) restructuring	Mar. 31, 2022 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Restructurings			2	2
Pre-modification Outstanding Recorded Investment		$ 1,718,000
Post-modification Outstanding Recorded Investment		1,699,000
Number of TDRs that Defaulted | loan				1
Post- modification Outstanding Recorded Investment	$ 0	48,000
Amount of ACL for loans associated with TDRs listed above		0	$ 0	$ 0
Temporary payment reduction and payment re-amortization of remaining principal over extended term
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Restructurings | loan				1
Post-modification Outstanding Recorded Investment		1,404,000
Temporary interest only payment plan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Restructurings | loan				1
Post-modification Outstanding Recorded Investment		295,000
Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Restructurings | restructuring			2
Pre-modification Outstanding Recorded Investment		1,718,000
Post-modification Outstanding Recorded Investment		1,699,000
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of TDRs that Defaulted | loan				1
Post- modification Outstanding Recorded Investment		$ 48,000

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ACL for Loans - Change In Provisions For Credits Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses	$ 2,736	$ 530
Provision for credit losses on loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses	2,318	825
Provision for unfunded commitments
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for credit losses	$ 418	$ (295)

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ACL for Loans - ACL Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning balance	$ 52,640
Provision for credit losses on loans	2,736	$ 530
Allowance for credit losses, ending balance	55,002
Loans Excluding Unfunded Commitments
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning balance	52,640	47,704
Provision for credit losses on loans	2,318	825
Recoveries	133	33
Less: Charge-offs	89	138
Allowance for credit losses, ending balance	55,002	48,424
Commercial real estate | Loans Excluding Unfunded Commitments
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning balance	36,564	31,847
Provision for credit losses on loans	1,161	2,089
Recoveries	0	0
Less: Charge-offs	0	0
Allowance for credit losses, ending balance	37,725	33,936
Commercial and industrial | Loans Excluding Unfunded Commitments
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning balance	8,896	9,574
Provision for credit losses on loans	438	(543)
Recoveries	127	24
Less: Charge-offs	83	105
Allowance for credit losses, ending balance	9,378	8,950
Commercial construction | Loans Excluding Unfunded Commitments
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning balance	3,961	4,090
Provision for credit losses on loans	492	(572)
Recoveries	0	0
Less: Charge-offs	0	0
Allowance for credit losses, ending balance	4,453	3,518
Residential mortgages | Loans Excluding Unfunded Commitments
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning balance	2,255	1,405
Provision for credit losses on loans	123	(83)
Recoveries	0	0
Less: Charge-offs	0	0
Allowance for credit losses, ending balance	2,378	1,322
Home equity loans and lines | Loans Excluding Unfunded Commitments
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning balance	633	465
Provision for credit losses on loans	76	(15)
Recoveries	3	4
Less: Charge-offs	0	0
Allowance for credit losses, ending balance	712	454
Consumer | Loans Excluding Unfunded Commitments
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses, beginning balance	331	323
Provision for credit losses on loans	28	(51)
Recoveries	3	5
Less: Charge-offs	6	33
Allowance for credit losses, ending balance	$ 356	$ 244

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ACL for Loans - Other Real Estate Owned (Details)	Mar. 31, 2023 loan property	Dec. 31, 2022 loan property
Receivables [Abstract]
OREO, Number of properties owned | property	0	0
Number of consumer mortgage loans in process of foreclosure | loan	0	0

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Leases - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($) lease	Mar. 31, 2022 USD ($)
Leases [Abstract]
Number of operating leases | lease	16
Operating lease expense | $	$ 404	$ 416
Weighted average remaining lease term on operating leases	29 years 2 months 12 days	30 years 1 month 6 days
Weighted average discount rate for operating leases	3.51%	3.45%

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Leases - Leases Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2023 (nine remaining months)	$ 1,067
2024	1,435
2025	1,441
2026	1,452
2027	1,454
Thereafter	32,346
Total lease payments	39,195
Less: Imputed interest	14,910
Total lease liability	$ 24,285	$ 24,415

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Deposits (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Banking and Thrift, Interest [Abstract]
Non-interest checking	$ 1,247,253	$ 1,361,588
Interest-bearing checking	641,194	678,715
Savings	297,790	326,666
Money market	1,454,858	1,381,645
CDs $250,000 or less	222,116	187,758
CDs greater than $250,000	152,945	99,434
Deposits	4,016,156	4,035,806
Reciprocal deposits	$ 721,100	$ 589,700

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Borrowed Funds and Subordinated Debt - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Disclosure [Abstract]
Borrowed funds	$ 3,199	$ 3,216
Subordinated debt	$ 59,261	$ 59,182

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Borrowed Funds and Subordinated Debt - Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Balance
Over 5 years	$ 3,199	$ 3,216
Total borrowed funds	$ 3,199	$ 3,216
Rate
Over 5 years	1.55%	1.55%
Total borrowed funds	1.55%	1.55%

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Derivative Instruments and Hedging Activities - Fair Value Classification (Details) - Interest-rate swaps - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Asset Notional Amount	$ 7,714	$ 7,777
Asset Derivatives	624	782
Liability Notional Amount	54,621	32,437
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet	722	855
Pay Floating, Receive Fixed
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Asset Notional Amount	0	0
Asset Derivatives	0	0
Liability Notional Amount	7,714	7,777
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet	624	782
Pay Fixed, Receive Floating
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Asset Notional Amount	7,714	7,777
Asset Derivatives	624	782
Liability Notional Amount	0	0
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet	0	0
Risk Participation Agreements Sold
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Asset Notional Amount	0	0
Asset Derivatives	0	0
Liability Notional Amount	46,907	24,660
Net Amounts of Liabilities Presented in the Consolidated Balance Sheet	$ 98	$ 73

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Derivatives and Hedging Activities - Narrative (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2023 USD ($) loan derivativeInstrument counterparty	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) loan derivativeInstrument
Derivative [Line Items]
Number of counterparties | counterparty	1
Fair value of swaps in a net liability position	$ (10,000)
Number of participation loans with swap contingent liabilities | loan	1		1
Interest-rate swaps
Derivative [Line Items]
Number of instruments held in back to back swaps | derivativeInstrument	2
Number of interest rate swaps | derivativeInstrument	4		4
Gain (loss) on interest rate swaps	$ 0	$ 0
Liability notional amount	54,621,000		$ 32,437,000
Counterparty credit risk exposure on interest rate swaps	0		708,000
Collateral posted for interest-rate swaps	0		20,000
Interest-rate swaps | Risk Participation Agreements Sold
Derivative [Line Items]
Liability notional amount	$ 46,907,000		$ 24,660,000

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Regulatory Capital Requirements - Schedule of Regulatory Capital Requirements (Details) $ in Thousands	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital to RWA, actual, amount	$ 485,903	$ 476,307
Total capital to RWA, actual, ratio	0.1355	0.1349
Total capital to RWA, minimum capital for capital adequacy purposes, amount	$ 286,953	$ 282,567
Total capital to RWA, minimum capacity for adequacy purposes	0.0800	0.0800
Tier 1 Capital to RWA, actual, amount	$ 381,621	$ 372,817
Tier 1 capital to RWA, actual, ratio	0.1064	0.1056
Tier 1 capital to RWA, minimum capital for capital adequacy purposes, amount	$ 215,215	$ 211,926
Tier 1 capital to RWA, minimum capacity for capital adequacy purposes, ratio	0.0600	0.0600
Tier 1 capital to AA leverage ratio, actual, amount	$ 381,621	$ 372,817
Tier 1 capital to AA leverage ratio, actual, ratio	0.0847	0.0810
Tier 1 capital to AA leverage ratio, minimum capital for capital adequacy purposes, amount	$ 180,292	$ 184,194
Tier 1 capital to AA leverage ratio, minimum capacity for capital adequacy purposes, ratio	0.0400	0.0400
Common equity tier 1 capital to RWA, actual, amount	$ 381,621	$ 372,817
Common equity tier 1 capital to RWA, actual, ratio	10.64%	10.56%
Common equity tier 1 capital to RWA, minimum capital for capital adequacy purposes, amount	$ 161,411	$ 158,944
Common equity tier 1 capital to RWA, minimum capital for capital adequacy purposes, ratio	4.50%	4.50%
Basel III additional capital conservation buffer at full phase-in	2.50%	2.50%
The Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital to RWA, actual, amount	$ 486,014	$ 475,668
Total capital to RWA, actual, ratio	0.1355	0.1347
Total capital to RWA, minimum capital for capital adequacy purposes, amount	$ 286,953	$ 282,567
Total capital to RWA, minimum capacity for adequacy purposes	0.0800	0.0800
Total capital to RWA, minimum capital to be well capitalized, amount	$ 358,692	$ 353,209
Total Capital to RWA, minimum capital to be well capitalized, ratio	0.1000	0.1000
Tier 1 Capital to RWA, actual, amount	$ 440,993	$ 431,359
Tier 1 capital to RWA, actual, ratio	0.1229	0.1221
Tier 1 capital to RWA, minimum capital for capital adequacy purposes, amount	$ 215,215	$ 211,926
Tier 1 capital to RWA, minimum capacity for capital adequacy purposes, ratio	0.0600	0.0600
Tier 1 capital to RWA, minimum capital to be well capitalized, amount	$ 286,953	$ 282,567
Tier 1 capital to RWA, minimum capital to be well capitalized, ratio	0.0800	0.0800
Tier 1 capital to AA leverage ratio, actual, amount	$ 440,993	$ 431,359
Tier 1 capital to AA leverage ratio, actual, ratio	0.0978	0.0937
Tier 1 capital to AA leverage ratio, minimum capital for capital adequacy purposes, amount	$ 180,292	$ 184,194
Tier 1 capital to AA leverage ratio, minimum capacity for capital adequacy purposes, ratio	0.0400	0.0400
Tier 1 capital to AA leverage ratio, minimum capital to be well capitalized, amount	$ 225,365	$ 230,243
Tier 1 capital to AA leverage ratio, minimum capital to be well capitalized, ratio	0.0500	0.0500
Common equity tier 1 capital to RWA, actual, amount	$ 440,993	$ 431,359
Common equity tier 1 capital to RWA, actual, ratio	12.29%	12.21%
Common equity tier 1 capital to RWA, minimum capital for capital adequacy purposes, amount	$ 161,411	$ 158,944
Common equity tier 1 capital to RWA, minimum capital for capital adequacy purposes, ratio	4.50%	4.50%
Common equity tier 1 capital to RWA, minimum capital to be well capitalized, amount	$ 233,150	$ 229,586
Common equity tier 1 capital to RWA, minimum capital to be well capitalized, ratio	6.50%	6.50%

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Regulatory Capital Requirements - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Compliance with Regulatory Capital Requirements under Banking Regulations [Abstract]
Basel III additional capital conservation buffer at full phase-in	2.50%	2.50%
Capital conservation buffer value	$ 89.7

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Comprehensive Income (Loss) - Reconciliation of Changes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net change in fair value, after reclassifications, pre tax	$ 26,160	$ (58,036)
Net change in fair value , after reclassification, tax benefit (expense)	(5,912)	13,074
Total other comprehensive income (loss), net of tax	20,248	(44,962)
Unrealized Gains (Losses) on Debt Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Change in fair value, before reclassifications, pre tax	26,160	(56,974)
Change in fair value, before reclassifications, tax benefit (expense)	(5,912)	12,840
Change in fair value, before reclassifications, after tax amount	20,248	(44,134)
Reclassifications, pre tax	0	1,062
Reclassifications, tax benefit (expense)	0	(234)
Reclassifications, after tax amount	0	828
Net change in fair value, after reclassifications, pre tax	26,160	(58,036)
Net change in fair value , after reclassification, tax benefit (expense)	(5,912)	13,074
Total other comprehensive income (loss), net of tax	$ 20,248	$ (44,962)

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Comprehensive Income (Loss) - AOCI Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning	$ 282,267	$ 346,895
Total other comprehensive loss, net	20,248	(44,962)
Balance, ending	311,318	310,539
Unrealized Gains (Losses) on Debt Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning	(96,207)	4,662
Total other comprehensive loss, net	20,248	(44,962)
Balance, ending	(75,959)	(40,300)
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning	(96,207)	4,662
Balance, ending	$ (75,959)	$ (40,300)

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Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares remain available for future grants (in shares)	376,429
Stock-based compensation expense	$ 522	$ 478
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 50	48
Restricted stock | Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Restricted stock | Non-Employee Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	2 years
Restricted stock and common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 407	360
Common stock in lieu of cash | Non-Employee Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 65	$ 70
Vesting, Year Two | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, vesting percentage		50.00%
Vesting, Year Four | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, vesting percentage		50.00%

XML

Stock-Based Compensation - Summary Information for Options Granted (Details) - $ / shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)	0	16,797
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term in years		10 years
Weighted average assumptions used in the fair value model:
Expected volatility		44.00%
Weighted average market price on date of grants (in usd per share)		$ 38.58
Per share weighted average fair value (in usd per share)		$ 14.40
Weighted Average | Stock options
Weighted average assumptions used in the fair value model:
Expected dividend yield		3.05%
Expected life in years		6 years 6 months
Risk-free interest-rate		2.19%
Fair value as a percentage of market value at grant date		37.00%

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Stock-Based Compensation - Restricted Stock Grants (Details) - Restricted stock - $ / shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards granted (in shares)	63,989	52,631
Weighted average grant date fair value, stock awards (in usd per share)	$ 32.32	$ 38.58
Non-Employee Director | Two-year vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards granted (in shares)	0	8,823
Employee | Four-year vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards granted (in shares)	32,719	21,554
Employee | Performance-based vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock awards granted (in shares)	31,270	22,254

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Earnings Per Share - Schedule of Weighted Average Number of Shares (Details) - shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Basic weighted average common shares outstanding (in shares)	12,155,320	12,055,991
Dilutive shares (in shares)	38,436	63,845
Diluted weighted average common shares outstanding (in shares)	12,193,756	12,119,836

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Earnings Per Share - Narrative (Details) - shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Antidilutive shares excluded from EPS (in shares)	34,164	34,210
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested participating restricted stock awards (in shares)	135,216		106,658

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Fair Value Measurements - Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Liabilities measured on a recurring basis:
Specific reserve for individually evaluated collateral dependent loans	$ 371	$ 298
Fair Value, Measurements, Recurring | Interest-rate swaps
Liabilities measured on a recurring basis:
Fair value of liabilities	624	782
Fair Value, Measurements, Recurring | RPA sold | Fair Value
Liabilities measured on a recurring basis:
Fair value of liabilities	98	73
Fair Value, Measurements, Recurring | Debt securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	825,520	816,102
Fair Value, Measurements, Recurring | Equity securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	4,269
Fair Value, Measurements, Recurring | FHLB stock
Assets measured on a recurring and non-recurring basis:
Fair value of assets	2,343	2,343
Fair Value, Measurements, Recurring | Interest-rate swaps
Assets measured on a recurring and non-recurring basis:
Fair value of assets	624	782
Fair Value, Measurements, Recurring | Level 1 Inputs | Interest-rate swaps
Liabilities measured on a recurring basis:
Fair value of liabilities	0	0
Fair Value, Measurements, Recurring | Level 1 Inputs | RPA sold
Liabilities measured on a recurring basis:
Fair value of liabilities	0	0
Fair Value, Measurements, Recurring | Level 1 Inputs | Debt securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Level 1 Inputs | Equity securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	4,269
Fair Value, Measurements, Recurring | Level 1 Inputs | FHLB stock
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Level 1 Inputs | Interest-rate swaps
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Level 2 Inputs | Interest-rate swaps
Liabilities measured on a recurring basis:
Fair value of liabilities	624	782
Fair Value, Measurements, Recurring | Level 2 Inputs | RPA sold
Liabilities measured on a recurring basis:
Fair value of liabilities	98	73
Fair Value, Measurements, Recurring | Level 2 Inputs | Debt securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	825,520	816,102
Fair Value, Measurements, Recurring | Level 2 Inputs | Equity securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Level 2 Inputs | FHLB stock
Assets measured on a recurring and non-recurring basis:
Fair value of assets	2,343	2,343
Fair Value, Measurements, Recurring | Level 2 Inputs | Interest-rate swaps
Assets measured on a recurring and non-recurring basis:
Fair value of assets	624	782
Fair Value, Measurements, Recurring | Level 3 Inputs | Interest-rate swaps
Liabilities measured on a recurring basis:
Fair value of liabilities	0	0
Fair Value, Measurements, Recurring | Level 3 Inputs | RPA sold
Liabilities measured on a recurring basis:
Fair value of liabilities	0	0
Fair Value, Measurements, Recurring | Level 3 Inputs | Debt securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Level 3 Inputs | Equity securities
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Level 3 Inputs | FHLB stock
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Recurring | Level 3 Inputs | Interest-rate swaps
Assets measured on a recurring and non-recurring basis:
Fair value of assets	0	0
Fair Value, Measurements, Nonrecurring
Assets measured on a recurring and non-recurring basis:
Individually evaluated loans (collateral dependent)	954	740
Fair Value, Measurements, Nonrecurring | Level 1 Inputs
Assets measured on a recurring and non-recurring basis:
Individually evaluated loans (collateral dependent)	0	0
Fair Value, Measurements, Nonrecurring | Level 2 Inputs
Assets measured on a recurring and non-recurring basis:
Individually evaluated loans (collateral dependent)	0	0
Fair Value, Measurements, Nonrecurring | Level 3 Inputs
Assets measured on a recurring and non-recurring basis:
Individually evaluated loans (collateral dependent)	$ 954	$ 740

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Fair Value Measurements - Quantitative (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans (collateral dependent)	$ 954	$ 740
Level 3 Inputs
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans (collateral dependent)	$ 954	740
Level 3 Inputs | Individually evaluated loans (collateral dependent) | Appraisal adjustments | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans (collateral dependent), unobservable input value or range	15.00%
Level 3 Inputs | Individually evaluated loans (collateral dependent) | Appraisal adjustments | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans (collateral dependent), unobservable input value or range	50.00%
Level 3 Inputs | Individually evaluated loans (collateral dependent) | Appraisal of collateral
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans (collateral dependent)	$ 954	$ 740

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Fair Value Measurements - Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Carrying Value
Financial assets:
Loans held for sale	$ 362
Loans, net	3,175,154	$ 3,127,878
Financial liabilities:
Borrowed funds	3,199	3,216
Subordinated debt	59,261	59,182
Carrying Value | CDs
Financial liabilities:
Deposits	375,061	287,192
Fair Value
Financial assets:
Loans held for sale	358
Loans, net	3,017,247	2,952,778
Financial liabilities:
Borrowed funds	2,191	2,006
Subordinated debt	55,671	55,407
Fair Value | CDs
Financial liabilities:
Deposits	370,316	281,800
Level 1 Inputs
Financial assets:
Loans held for sale	0
Loans, net	0	0
Financial liabilities:
Borrowed funds	0	0
Subordinated debt	0	0
Level 1 Inputs | CDs
Financial liabilities:
Deposits	0	0
Level 2 Inputs
Financial assets:
Loans held for sale	358
Loans, net	0	0
Financial liabilities:
Borrowed funds	2,191	2,006
Subordinated debt	55,671	55,407
Level 2 Inputs | CDs
Financial liabilities:
Deposits	370,316	281,800
Level 3 Inputs
Financial assets:
Loans held for sale	0
Loans, net	3,017,247	2,952,778
Financial liabilities:
Borrowed funds	0	0
Subordinated debt	0	0
Level 3 Inputs | CDs
Financial liabilities:
Deposits	$ 0	$ 0

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Supplemental Cash Flow (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Supplemental financial data:
Cash paid for: interest	$ 6,931	$ 2,222
Cash paid for: income taxes	4,455	5,060
Cash paid for: lease liability	340	331
Supplemental schedule of non-cash activity:
Net purchases of investment securities not yet settled	$ 0	$ 1,500