Nature of Operations: Bank of Marin Bancorp ("Bancorp"), headquartered in Novato, California, conducts business primarily through its wholly-owned subsidiary, Bank of Marin (the "Bank"), a California state-chartered commercial bank that provides a wide range of financial services through 27 retail branches and 8 commercial banking offices across 10 counties, including Alameda, Amador, Contra Costa, Marin, Napa, Placer, Sacramento, San Francisco, San Mateo and Sonoma. Our customer base is made up of business, not-for-profit and personal banking relationships from the communities within our Northern California footprint.

Basis of Presentation: The consolidated financial statements include the accounts of Bancorp, a bank holding company, and its wholly-owned bank subsidiary, Bank of Marin, a California state-chartered commercial bank. References to “we,” “our,” “us” mean Bancorp and the Bank that are consolidated for financial reporting purposes. Our accounting and reporting policies conform to U.S. generally accepted accounting principles ("GAAP"), general practice, and regulatory guidance within the banking industry. A summary of our significant policies follows. All material intercompany transactions have been eliminated. We monitor financial performance and evaluate the revenue streams of the various products, services, locations, and operations on a company-wide basis. Accordingly, all of the community banking and wealth management and trust services are considered by management to be aggregated into one reportable operating segment, community banking. We evaluated subsequent events through the date of filing with the Securities and Exchange Commission (“SEC”) and determined there were no subsequent events that required additional recognition or disclosure.

Accounting Changes and Reclassifications: Certain items in prior financial statements have been reclassified to conform to the current presentation, including the reclassification of the provision for credit losses on unfunded commitments in the second quarter of 2021 from non-interest expense to a separate line item under the provision for credit losses on loans in the consolidated statements of comprehensive income (loss).

Use of Estimates: The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant accounting estimates reflected in the consolidated financial statements include the allowance for credit losses, fair value measurements, and goodwill impairment assessment, as discussed in the Notes herein.

Cash, Cash Equivalents and Restricted Cash: This includes cash, due from banks, federal funds sold and other short-term investments with maturities of less than three months at the time of purchase. Restricted cash includes balances not immediately available for business operations such as Federal Reserve Bank of San Francisco reserve requirements and cash pledged for interest rate swap contracts and local agency deposits.

Investment Securities: Investment securities are classified as "held-to-maturity," "trading securities" or "available-for-sale." Investments classified as held-to-maturity are those that we have the ability and intent to hold until maturity and are reported at cost, adjusted for the amortization or accretion of premiums or discounts. Investments held for resale in anticipation of short-term market movements are classified as trading securities and are reported at fair value, with unrealized gains and losses included in earnings. Investments that are neither held-to-maturity nor trading are classified as available-for-sale and are reported at fair value. Unrealized gains and losses for available-for-sale securities, net of related taxes, are reported as a separate component of comprehensive income (loss) and included in stockholders' equity until realized. For discussion of our methodology in determining fair value, see Note 9, Fair Value of Assets and Liabilities.

at the date of transfer. Unrealized holding gains or losses on the dates of the transfer of securities from available-for-sale to held-to-maturity are included in the balance of accumulated other comprehensive income (loss), net of tax, in the consolidated balance sheets. These unrealized holding gains or losses on the dates of transfer are amortized over the remaining life of the securities as yield adjustments in a manner consistent with the amortization or accretion of the original purchase premium or discount on the associated security.

Non-marketable equity securities include stock held for membership and regulatory purposes, such as Federal Home Loan Bank ("FHLB") stock and other non-marketable equity securities. These securities are accounted for at cost, evaluated for impairment as of each reporting period, and included in interest receivable and other assets on the consolidated statements of condition. During 2023, the Bank sold its remaining investment in Visa Inc. Class B restricted common stock, as discussed in Note 2 - Investment securities. As of December 31, 2023 and 2022 our investment in FHLB stock was carried at cost, as there was no impairment or changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. Both cash and stock dividends from the FHLB are reported as non-interest income.

Allowance for Credit Losses on Investment Securities: The allowance for credit losses on held-to-maturity securities is a contra-asset valuation account determined in accordance with ASC 326, which is deducted from the securities' amortized cost basis at the balance sheet date as a result of management's assessment of the net amount expected to be collected. The allowance is measured on a pooled basis for securities with similar risk characteristics using historical credit loss information, adjusted for current conditions and reasonable and supportable forecasts. Securities that are determined to be uncollectible are written off against the allowance.

For available-for-sale securities in an unrealized loss position ("impaired security"), we assess whether 1) we intend to sell the security, or, 2) it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis. Under either of these conditions, the security's amortized cost is written down to fair value through a charge to previously recognized allowances or earnings, as applicable. For impaired securities that do not meet these conditions, we assess whether the decline in fair value was due to credit loss or other factors. This assessment considers, among other things: 1) the extent to which the fair value is less than amortized cost, 2) the financial condition and near-term prospects of the issuer, 3) any changes to the rating of the security by a rating agency, and 4) our intent and ability to retain the investment for a period of time sufficient to allow for any anticipated recovery in fair value. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss component. Any impairment due to non-credit-related factors that has not been recorded through an allowance for credit losses is recognized in other comprehensive income (loss). The discount rate used in determining the present value of the expected cash flows is based on the effective interest rate implicit in the security at the date of purchase.

Accrued interest receivable is excluded from the amortized costs and fair values of both held-to-maturity and available-for-sale securities and included in interest receivable and other assets on the consolidated statements of condition. Investment securities are placed on non-accrual status when principal or interest is contractually past due more than ninety days, or management does not expect full payment of principal and interest. We do not record an allowance for credit losses for accrued interest on investment securities, as the amounts are written-off when the investment is placed on non-accrual status. There were no non-accrual investment securities in any of the years presented in the consolidated financial statements.

Originated Loans: Loans are reported at amortized cost, which is the principal amount outstanding net of deferred fees (costs), purchase premiums (discounts) and net charge-offs (recoveries). Amortized cost excludes accrued interest, which is reflected in interest receivable and other assets in the consolidated statements of condition. We do not measure an allowance for credit losses on accrued interest receivable balances because these balances are written off in a timely manner as a reduction to interest income when loans are placed on non-accrual status as discussed below. Interest income is accrued daily using the simple interest method. Fees collected upon loan origination and certain direct costs of originating loans are deferred and recognized over the contractual lives of the related loans as yield adjustments using the interest method or straight-line method, as applicable. Upon prepayment or other disposition of the underlying loans before their contractual maturities, any associated unearned fees or unamortized costs are recognized.

Acquired Loans: ASC 326 modified the accounting for purchased loans and requires that an allowance for credit losses be established at the date of acquisition. However, for purchased financial assets with a more-than-insignificant amount of credit deterioration since origination (“PCD assets”) that are measured at amortized cost, the initial allowance for credit losses is added to the purchase price rather than reported as a provision for credit losses. Subsequent changes in the allowance for credit losses on PCD assets are recognized through the provision for credit losses.

Past-Due and Non-Accrual Loan Policy: A loan is considered past due when a payment has not been received by the contractual due date. Loans are placed on non-accrual status when management believes that there is substantial doubt as to the collection of principal or interest, generally when they become contractually past due by 90 days or more with respect to principal or interest, except for loans that are well-secured and in the process of collection. When loans are placed on non-accrual status, any accrued but uncollected interest is reversed from current-period interest income and the amortization of deferred loan origination fees and costs is suspended. Interest payments received on nonaccrual loans are either applied against principal or reported as interest income, according to management’s judgment as to the ultimate collectability of principal. We may return non-accrual loans to accrual status when one of the following occurs:

•The borrower has resumed paying the full amount of the principal and interest and we are satisfied with the borrower's financial position. In order to meet this test, we must have received repayment of all past due principal and interest, unless the amounts contractually due are reasonably assured of repayment within a reasonable period of time, and there has been a sustained period of repayment performance (generally, six consecutive monthly payments), according to the original or modified contractual terms.

Loan Charge-Off Policy: For all loan types excluding overdraft accounts, we generally make a charge-off determination at or before 90 days past due. A collateral-dependent loan is partially charged down to the fair value of collateral securing it if: (1) it is deemed uncollectable, or (2) it has been classified as a loss by either our internal loan review process or external examiners. A non-collateral-dependent loan is partially charged down to its net realizable value under the same circumstances. Overdraft accounts are generally charged off when they exceed 60 days past due.

Collateral Dependent Loans: A loan is collateral dependent when the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the sale or operation of the collateral. For collateral dependent loans, including those for which management determines foreclosure is probable, each loan is individually evaluated and the allowance for credit losses is based on the fair value of the collateral, adjusted for estimated selling costs when repayment is expected from the sale of the collateral, less the loan's amortized cost. In determining the fair value, management considers such information as the appraised value of the collateral, observed and potential future changes in collateral value, and historical loss experience for loans that were secured by similar collateral. Generally, with problem credits that are collateral dependent, we obtain appraisals of the collateral at least annually. We may obtain appraisals more frequently if we believe the collateral value is subject to market volatility, if a specific event has affected the collateral, or if we believe foreclosure is imminent.

Allowance for Credit Losses on Loans ("ACL"): The ACL is a valuation account that is deducted from the amortized cost basis at the balance sheet date to present the net amount of loans expected to be collected. Amortized cost does not include accrued interest, which management elected to exclude from the estimate of expected credit losses (refer to the Past-Due and Non-Accrual Loan Policy section above). Management estimates the allowance quarterly using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Credit loss experience provides the basis for the estimation of expected credit losses.

The ACL model utilizes a discounted cash flow ("DCF") method to measure the expected credit losses on loans collectively evaluated that are sub-segmented by loan pools with similar credit risk characteristics, which are generally comprised of federal regulatory reporting codes (i.e., Call codes). Pooled segments include the following:

The DCF method incorporates assumptions for probability of default ("PD"), loss given default ("LGD"), and prepayments and curtailments over the contractual terms of the loans. Under the DCF method, the ACL reflects the difference between the amortized cost basis and the present value of the expected cash flows using the loan's effective rate. We elected to report the change in present values from one reporting period to the next due to the passage of time and changes in the estimate of future expected cash flows through the provision for credit losses, rather than though interest income.

In determining the PD for each pooled segment, the Bank utilized regression analyses to identify certain economic drivers that were considered highly correlated to historical Bank or peer loan default experience. As a result, management chose the California unemployment rate as the primary economic forecast driver for all segments, except for municipal loans. In addition, the annual percentage change in the California gross domestic product was used in the commercial and industrial loan segment. For municipal loans, the ACL model utilized a constant default rate obtained from a nationally recognized default rate study, which is updated annually. A third party provides LGD estimates for each segment based on a banking industry Frye-Jacobs Risk Index approach. The ACL model incorporates a one-year reasonable and supportable forecast of economic factors, updated quarterly, which is based on Moody's Analytics' Baseline Forecast. For periods beyond the forecast horizon, the economic factors revert to historical averages on a straight-line basis over a one-year period.

Management considers whether adjustments to the quantitative portion of the ACL are needed for differences in segment-specific risk characteristics or to reflect the extent to which it expects current conditions and reasonable and supportable forecasts of economic conditions to differ from the conditions that existed during the historical period included in the development of PD and LGD. Qualitative internal and external risk factors include, but are not limited to, the following:

There were no material changes to the ACL methodology during 2023. However, assumptions that mainly influenced management's current estimate of the expected credit losses were primarily adjustments to qualitative risk factors from continued uncertainty about inflation and recession risks, the potential impact of rapidly increasing interest rates and other external factors on both our non-owner-occupied commercial real estate and construction portfolios, loan and collateral concentration risks in our construction and commercial real estate portfolios, heightened portfolio management in light of current economic conditions, and continued negative trends in adversely graded loans and/or collateral values for our non-owner occupied commercial real estate office and multi-family real estate portfolios. Other elements of the estimated current expected credit losses included increased allowances for individually analyzed loans exhibiting unique credit risk characteristics and a slight increase in Moody's Analytics' Baseline Forecast of California's unemployment rate, partially offset by the impact of an overall decrease in loans. While we believe we use the best information available to determine the allowance for credit losses, our results of operations could be significantly affected if circumstances differ substantially from the assumptions used in determining the allowance. Our ACL model is sensitive to changes in unemployment rate forecasts and certain other assumptions that could result in material fluctuations in the allowance for credit losses and adversely affect our financial condition and results of operations.

As discussed in the Other Recently Adopted Accounting Standards section below, as of January 1 2023, we adopted ASU No. 2022-02 under which the concept of troubled debt restructured loans and its impact on the ACL calculation was eliminated in favor of the disclosure of certain loan modifications made to borrowers experiencing financial difficulty. Such modified loans are now subject to the Bank's standard ACL process, as outlined above.

Allowance for Credit Losses on Unfunded Loan Commitments: We make commitments to extend credit to meet the financing needs of our customers in the form of loans or standby letters of credit. We are exposed to credit losses over a loan's contractual period in the event that a decline in credit quality of the borrower leads to nonperformance. We record an allowance for losses on unfunded loan commitments at the balance sheet date based on estimates of probability that these commitments will be drawn upon according to historical utilization experience of different types of commitments and expected loss severity and loss rates determined for pooled funded loans. The allowance for credit losses on unfunded commitments is a liability account included in interest payable and other liabilities on the consolidated statements of condition. Adjustments to the allowance for unfunded commitments are included in non-interest expense as a provision for (or reversal of) the allowance for unfunded commitments.

Transfers of Financial Assets: We have entered into certain loan participation agreements with other organizations. We account for these transfers of financial assets as sales when control over the transferred financial assets has been surrendered. Control over transferred assets is deemed to be surrendered when 1) the assets and liabilities have been isolated from us, 2) the transferee has the right to pledge or exchange the assets (or beneficial interests) it received, free of conditions that constrain it from taking advantage of that right, beyond a trivial benefit and 3) we do not maintain effective control over the transferred financial assets or third-party beneficial interests related to those transferred assets. Transfers of a portion of a loan must meet the criteria of a participating interest. If it does not meet the criteria of a participating interest, the transfer must be accounted for as a secured borrowing. In order to meet the criteria for a participating interest, all cash flows from the loan must be divided proportionately, the rights of each loan holder must have the same priority, and the loan holders must have no recourse to the transferor other than standard representations and warranties and no loan holder has the right to pledge or exchange the entire loan. We recognized no gains or losses on the sale of these participation interests in 2023, 2022 and 2021.

equipment is generally depreciated over three to twenty years. Bank-owned buildings are depreciated over twenty-five to thirty years. Leasehold improvements are amortized over the lesser of their estimated useful lives or the terms of the leases. When assets are sold or otherwise disposed of, the cost and related accumulated depreciation or amortization are removed from the accounts and any resulting gain or loss is recognized in income for the period. The cost of maintenance and repairs is charged to expense as incurred.

Leases: We lease certain premises under long-term non-cancelable operating leases, most of which include escalation clauses and one or more options to extend the lease term, and some of which contain lease termination clauses. Only those renewal and termination options that management determines are reasonably certain of exercising are included in the calculation of the lease liability. In addition, we lease certain equipment under finance leases. The equipment finance lease terms do not contain renewal options, bargain purchase options or residual value guarantees. We did not have any significant short-term leases during the reported periods.

Lease right-of-use assets represent the right to use the underlying asset while lease liabilities represent the present value of future lease obligations. We elected not to separate non-lease components from lease components and to exclude short-term leases (i.e., lease term of 12 months or less at the commencement date) from right-of-use assets and lease liabilities for all lease classifications. When calculating the lease liability, because most lease contracts do not contain an implicit interest rate, we discount lease payments over a lease's expected term based on the collateralized Federal Home Loan Bank borrowing rate that was commensurate with lease terms and minimum payments at the lease commencement date. Right-of-use assets for operating leases are amortized over the lease term by amounts that represent the difference between periodic straight-line lease expense and periodic interest accretion on the related liability to make lease payments, whereas finance leases are amortized on a straight-line basis over the term of the lease. Expense recognition for operating leases is recorded on a straight-line basis while expense recognition for finance leases represents the sum of periodic amortization of the associated right-of-use asset and the interest accretion on the lease liability. Refer to Note 12, Commitments and Contingencies, for further information.

Business Combinations: Business combinations are accounted for under the acquisition method of accounting in accordance with ASC 805, Business Combinations. A business is defined as a set of activities and assets that is both self-sustaining and managed to provide a return to investors and generally has three elements: inputs, processes and outputs. Under the acquisition method, the acquiring entity in a business combination recognizes the acquired assets and assumed liabilities at their estimated fair values as of the date of acquisition. Any excess of the purchase price over the fair value of net assets and other identifiable intangible assets acquired is recorded as goodwill. To the extent the fair value of net assets acquired, including other identifiable assets, exceed the purchase price, a bargain purchase gain is recognized. Assets acquired and liabilities assumed from a business combination are recognized at fair value. Results of operations of an acquired business are included in the consolidated statements of operations from the date of acquisition. Business acquisition-related costs, including conversion and restructuring charges, are expensed as incurred. If substantially all of an acquisition is made up of one asset or several similar assets, or without a substantive process that together contributes to the ability to create outputs, the acquisition is accounted for as an asset acquisition and acquisition costs will be capitalized as part of the assets acquired, rather than expensed in a business combinations.

Goodwill and Other Intangible Assets: Goodwill arises from the acquisition method of accounting for business combinations and represents the excess of the fair value of the consideration transferred, plus the fair value of any noncontrolling interests in the acquiree, over the fair value of the net assets acquired and liabilities assumed as of the acquisition date. Goodwill is deemed to have an indefinite life, is not subject to amortization, and as such is tested for impairment at least annually or more frequently if events and circumstances lead management to believe the value of goodwill may be impaired. Goodwill is the only intangible asset with an indefinite life recorded in the Company’s consolidated statements of financial condition. Impairment testing is performed at the reporting unit level. Management considered the Company to be its sole reporting unit for the year ended December 31, 2023.

Management’s assessment of goodwill impairment is performed in accordance with ASC 350-20, Intangibles - Goodwill and Other - Goodwill and encompasses a two-step process. First, the Company has the option to perform a qualitative assessment to evaluate relevant events or circumstances to determine whether it is more likely than not the fair value of the Company is less than its carrying amount, including goodwill. The factors considered in the qualitative assessment typically include macroeconomic conditions, industry and market conditions and the overall financial performance of the Company, among other factors. If the Company determines that it is more likely than

not the fair value of the Company may be less than its carrying amounts, then it proceeds to the quantitative impairment test, whereby it calculates the fair value of the Company. Under GAAP, in its performance of impairment testing, management has the unconditional option to proceed directly to the quantitative impairment test, bypassing the qualitative assessment. If the carrying amount of the Company exceeds its fair value, the amount by which the carrying amount exceeds fair value, up to the carrying value of goodwill, is recorded through earnings as an impairment charge recorded in non-interest expense. If the results of the qualitative assessment indicate that it is not more likely than not that an impairment has occurred, or if the quantitative impairment test results in a fair value of the Company that is greater than the carrying amount, then no impairment charge is recorded.

The Company performs its annual goodwill impairment test as of November 30th each year. Due to the market volatility experienced in the banking sector during 2023, the Company elected to bypass a qualitative assessment of goodwill and proceed directly to a quantitative assessment, the results of which indicated that goodwill totaling $72.8 million was not impaired as of December 31, 2023, and there were no changes to our assessment through December 31, 2023. In addition, the Company recorded no goodwill impairment for the years ended December 31, 2022, and 2021.

Core deposit intangibles ("CDI") arising from the acquisition of other financial institutions are considered to have definite useful lives and are amortized on an accelerated method over their estimated useful life of ten years. At December 31, 2023, the future estimated amortization expense for the CDI arising from our past acquisitions was as follows:

Other Real Estate Owned ("OREO"): OREO is comprised of property acquired through a business combination, foreclosure, in substance repossession or acceptance of deeds-in-lieu of foreclosure when the related loan receivable is de-recognized. OREO is recorded at fair value of the collateral less estimated costs to sell, establishing a new cost basis, and subsequently accounted for at the lower of cost or fair value less estimated costs to sell. Any shortfall of collateral value from the recorded investment of the related loan is recognized as loss at the time of foreclosure and is charged against the allowance for loan losses. Fair value of collateral is generally based on an independent appraisal of the property. Revenues and expenses associated with OREO, and subsequent adjustments to the fair value of the property and to the estimated costs of disposal, are realized and reported as a component of non-interest income and expense when incurred. We recorded a $40 thousand and $345 thousand valuation adjustment to OREO in 2023 and 2022, respectively. In July 2023, the Bank completed the sale of its only OREO property.

Bank Owned Life Insurance ("BOLI"): The Bank owns life insurance policies on certain key current and former officers. BOLI is recorded in interest receivable and other assets on the consolidated statements of condition at the amount that can be realized under the insurance contract at period-end, which is the cash surrender value adjusted for other charges or amounts due that are probable at settlement.

Investments in Low Income Housing Tax Credit Funds: We have invested in limited partnerships that were formed to develop and operate affordable housing projects for low or moderate-income tenants throughout California. Our ownership percentage in each limited partnership ranges from 1.0% to 3.5%. We account for the investments in qualified affordable housing tax credit funds using the proportional amortization method, where the initial cost of the investment is amortized in proportion to the tax credits and other tax benefits received. Low income housing tax credits and other tax benefits received, net of the amortization of the investment is recognized as part of income tax benefit. Each of the partnerships must meet the regulatory minimum requirements for affordable housing for a minimum 15-year compliance period to fully utilize the tax credits. If the partnerships cease to qualify during the compliance period, the credit may be denied for any period in which the project is not in compliance and a portion of the credit previously taken is subject to recapture with interest. We record an impairment charge if the value of the future tax credits and other tax benefits is less than the carrying value of the investments.

Employee Stock Ownership Plan (“ESOP”): We recognize compensation cost for ESOP contributions when funds become committed for the purchase of Bancorp's common shares into the ESOP in the year in which the employees render service entitling them to the contribution. If we contribute stock, the compensation cost is the fair value of the shares when they are committed to be released (i.e., when the number of shares becomes known and formally approved). In 2023, 2022 and 2021, Bancorp only made stock contributions to the ESOP.

Income Taxes: Income taxes reported in the consolidated financial statements are computed based on an asset and liability approach. We recognize the amount of taxes payable or refundable for the current year and we record deferred tax assets and liabilities for future tax consequences attributable to differences between the financial statement carrying amount of existing assets and liabilities and their respective tax bases using enacted tax rates in effect for the year in which the temporary differences are expected to reverse. We record net deferred tax assets to the extent it is more likely than not that they will be realized. In evaluating our ability to recover the deferred tax assets and the need to establish a valuation allowance against the deferred tax assets, management considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, and tax planning strategies. In projecting future taxable income, management develops assumptions including the amount of future state and federal pretax operating income, the reversal of temporary differences, and the implementation of feasible and prudent tax planning strategies. These assumptions require significant judgment about the forecasts of future taxable income and are consistent with the plans and estimates being used to manage the underlying business. Bancorp files consolidated federal and combined state income tax returns.

We recognize the financial statement effect of a tax position when it is more likely than not, based on the technical merits and all available evidence, that the position will be sustained upon examination, including the resolution through protests, appeals or litigation processes. For tax positions that meet the more likely than not threshold, we measure and record the largest amount of tax benefit that is greater than fifty percent likely of being realized upon ultimate settlement with the taxing authority. The remainder of the benefits associated with tax positions taken is recorded as unrecognized tax benefits, along with any related interest and penalties. Interest and penalties related to unrecognized tax benefits are recorded in tax expense.

In deciding whether or not our tax positions taken meet the more likely than not recognition threshold, we must make judgments and interpretations about the application of inherently complex state and federal tax laws. To the extent tax authorities disagree with tax positions taken by us, our effective tax rates could be materially affected in the period of settlement with the taxing authorities. Revision of our estimate of accrued income taxes also may result from our own income tax planning, which may affect effective tax rates and results of operations for any reporting period.

We present an unrecognized tax benefit as a reduction of a deferred tax asset for a net operating loss ("NOL") carryforward, or similar tax loss or tax credit carryforward, rather than as a liability, when (1) the uncertain tax position would reduce the NOL or other carryforward under the tax law of the applicable jurisdiction and (2) we intend to and are able to use the deferred tax asset for that purpose. Otherwise, the unrecognized tax benefit is presented as a liability instead of being netted with deferred tax assets.

Earnings per share (“EPS”): EPS is based upon the weighted average number of common shares outstanding during each year. The following table shows: 1) weighted average basic shares, 2) potentially dilutive weighted average common shares related to stock options and unvested restricted stock awards, and 3) weighted average diluted shares. Basic EPS are calculated by dividing net income by the weighted average number of common shares outstanding during each annual period, excluding unvested restricted stock awards. Diluted EPS are calculated using the weighted average number of potentially dilutive common shares. The number of potentially dilutive common shares included in year-to-date diluted EPS is a year-to-date weighted average of potentially dilutive common shares included in each quarterly diluted EPS computation. In computing diluted EPS, we exclude anti-dilutive shares such as options whose exercise prices exceed the current common stock price, as they would not reduce EPS under the treasury stock method. We have two forms of outstanding common stock: common stock and unvested restricted stock awards. Holders of unvested restricted stock awards receive non-forfeitable dividends at the same rate as common shareholders and they both share equally in undistributed earnings. Under the two-class method, the difference in EPS is nominal for these participating securities.


(in thousands, except per share data)	2023		2022		2021
Weighted average basic common shares outstanding	16,012		15,921		14,340
Potentially dilutive common shares related to:
Stock options	3		31		62
Unvested restricted stock awards	11		17		20
Weighted average diluted common shares outstanding	16,026		15,969		14,422
Net income	$	19,895	$	46,586	$	33,228
Basic EPS	$	1.24	$	2.93	$	2.32
Diluted EPS	$	1.24	$	2.92	$	2.30
Weighted average anti-dilutive common shares not included in the calculation of diluted EPS	364		211		97

Share-Based Compensation: All share-based payments, including stock options and restricted stock, are recognized as stock-based compensation expense in the consolidated statements of comprehensive income (loss) based on the grant-date fair value of the award with a corresponding increase in common stock. The grant-date fair value of the award is amortized on a straight-line basis over the requisite service period, which is generally the vesting period. The stock-based compensation expense excludes stock grants to directors as compensation for their services, which are recognized as director expenses separately based on the grant-date value of the stock. We account for forfeitures as they occur. See Note 8, Stockholders' Equity and Stock Option Plans, for further discussion.

We determine the fair value of stock options at the grant date using a Black-Scholes pricing model that takes into account the stock price at the grant date, exercise price, expected life of the option, volatility of the underlying stock, expected dividend yield and risk-free interest rate over the expected life of the option. The expected term of options granted is derived from historical data on employee exercises and post-vesting employment termination behavior. The risk-free rate for periods within the expected life of the option is based on the U.S. Treasury yield curve in effect at the time of the grant. Expected volatility is based on the historical volatility of the common stock over the most recent period that is generally commensurate with the expected life of the options. The Black-Scholes option valuation model requires the input of highly subjective assumptions, including the expected life of the stock-based award and stock price volatility. The assumptions used represent management's best estimates based on historical information, but these estimates involve inherent uncertainties and the application of management's judgment. As a result, if other assumptions had been used, the recorded stock-based compensation expense could have been materially different from that recorded in the consolidated financial statements. The fair value of restricted stock is based on the stock price on the grant date.

We record excess tax benefits resulting from the exercise of non-qualified stock options, the disqualifying disposition of incentive stock options and vesting of restricted stock awards as tax benefits in the consolidated statements of comprehensive income (loss) with a corresponding decrease to current taxes payable. In addition, we reflect excess tax benefits as an operating activity in the consolidated statements of cash flows.

Derivative Financial Instruments and Hedging Activities - Fair Value Hedges: All of our interest rate swap contracts are designated and qualified as fair value hedges. The terms of our loan interest rate swap contracts are closely aligned to the terms of the designated fixed-rate loans. The hedging relationships are tested for effectiveness on a quarterly basis using a qualitative approach. The qualitative analysis includes verification that there are no changes to the derivative's or hedged item's key terms and conditions and no adverse developments regarding risk of counterparty default, and validation that we continue to have fair value hedge designation. Our rate swaps on available-for-sale securities were designated as partial term fair value hedges and structured such that the changes in fair value of the interest rate swaps are expected to be perfectly effective in offsetting the changes in the fair value of the hedged items attributable to changes in the swap rate. Because the hedges met the criteria for using the shortcut method, there is no need to periodically reassess effectiveness during the term of the hedges.

From time to time, we make firm commitments to enter into long-term fixed-rate loans with borrowers backed by yield maintenance agreements and simultaneously enter into forward interest rate swap agreements with correspondent banks to mitigate the change in fair value of the yield maintenance agreement. Prior to loan funding, yield maintenance agreements with net settlement features that meet the definition of a derivative are considered as non-designated hedges and are carried on the consolidated statements of condition at their fair value in other assets (when the fair value is positive) or in other liabilities (when the fair value is negative). The offsetting changes in the fair value of the forward swap and the yield maintenance agreement are recorded in interest income. When the fixed-rate loans are originated, the forward swaps are designated to offset the change in fair value in the loans. Subsequent to the point of the swap designations, the fair value of the related yield maintenance agreements at the designation date that was recorded in other assets is amortized using the effective yield method over the life of the respective designated loans.

Revenue Recognition: We utilize the following five-step model for non-financial instrument related revenue that is in scope for ASC 606, Revenue from Contracts with Customers: 1) identify the contract, 2) identify the performance obligations in the contract, 3) determine the transaction price, 4) allocate the transaction price to the performance obligations in the contract, and, 5) recognize revenue when (or as) the entity satisfies the performance obligation. Our main revenue streams in scope for ASC 606 include:

•Wealth management and trust services ("WMTS") fees - WMTS services include, but are not limited to: customized investment advisory and management; administrative services such as bill pay and tax reporting; trust administration, estate settlement, custody and fiduciary services. Performance obligations for investment advisory and management services are generally satisfied over time. Revenue is recognized monthly according to a tiered fee schedule based on the client's month-end market value of assets under our management. WMTS does not earn revenue based on performance or incentives. Costs associated with WMTS revenue-generating activities, such as payments to sub-advisors, are recorded separately as part of professional service expenses when incurred.

•Deposit account service charges - Service charges on deposit accounts consist of monthly maintenance fees, business account analysis fees, business online banking fees, check order charges, and other deposit account-related fees. Performance obligations for monthly maintenance fees and account analysis fees are satisfied, and the related revenue recognized, when we complete our performance obligation each month. Performance obligations related to transaction-based services (such as check orders) are satisfied, and the related revenue recognized, at a point in time typically when the transaction is completed, except for business accounts subject to analysis where the transaction-based fees are part of the monthly account analysis fees.

•Debit card interchange fees - We issue debit cards to our consumer and small business customers that allow them to purchase goods and services from merchants in person, online, or via mobile devices using funds held in their demand deposit accounts held with us. Debit cards issued to our customers are part of global electronic payment networks (such as Visa) who pass a portion of the merchant interchange fees to debit card-issuing member banks like us when our customers make purchases through their networks. Performance obligations for debit card services are satisfied and revenue is recognized daily as the payment networks process transactions. Because we act in an agent capacity, we recognize network costs on a net basis with interchange fees in non-interest income.

on fair value hedges, reclassification adjustment for realized (gains) losses on available-for-sale securities in net income, and amortization of net unrealized gains or losses on securities transferred from available-for-sale to held-to-maturity, net of related taxes, reported on the consolidated statements of comprehensive income (loss) and as components of stockholders' equity.

Fair Value Measurements: We use fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. We base our fair values on the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (i.e., exit price notion) reflecting factors such as a liquidity premium. Securities available-for-sale and derivatives are recorded at fair value on a recurring basis. Equity investments that do not have readily determinable fair values are recorded at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. FHLB stock was carried at cost as of December 31, 2023, as there was no impairment or changes resulting from observable price changes in orderly transactions for an identical or similar investment of the same issuer. Additionally, from time to time, we may be required to record certain assets and liabilities at fair value on a non-recurring basis, such as purchased loans and acquired deposits recorded at acquisition date, certain collateral dependent loans, other real estate owned and securities held-to-maturity that are other-than-temporarily impaired. These non-recurring fair value adjustments typically involve write-downs of individual assets due to application of lower-of-cost or market accounting.

When we develop our fair value measurement process, we maximize the use of observable inputs. Whenever there is no readily available market data, we use our best estimates and assumptions in determining fair value, but these estimates involve inherent uncertainties and the application of management's judgment. As a result, if other assumptions had been used, our recorded earnings or disclosures could have been materially different from those reflected in these consolidated financial statements.

In March 2022, the FASB issued ASU No. 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures. The amendment eliminated the recognition measurement guidance for troubled debt restructured ("TDR") loans and instead enhanced disclosure requirements for certain loan modifications when a borrower is experiencing financial difficulty. In addition, the amendment required that an entity include in its vintage disclosures the current period gross loan charge-offs by year of origination. We early adopted the current period charge-off disclosures in the first quarter of 2022. We adopted the loan modification provisions as of January 1, 2023 using a modified retrospective method. The cumulative-effect adjustment to retained earnings was considered immaterial. Refer to Note 5, Loans and Allowance for Credit Losses on Loans, for additional information.

In March 2022, the FASB issued ASU No. 2022-01, Derivatives and Hedging (Topic 815): Fair Value Hedging - Portfolio Layer Method. Among other things, the ASU renamed the "last-of-layer" method to the "portfolio layer" method and made fair value hedging more accessible for hedge accounting of interest rate risk for portfolios and financial assets. For example, the guidance permits an entity to apply the same portfolio hedging method to both prepayable and non-prepayable financial assets, thereby providing for consistency between accounting for similar hedges. We adopted the amendments on January 1, 2023, which had no effect on our existing hedge accounting, disclosures, financial condition or results of operations.

In March 2020, the FASB issued Accounting Standards Update ("ASU") No. 2020-04, Reference Rate Reform (Topic 848). The amendments in this ASU are elective and provide optional guidance for a limited period of time to ease the potential burden of accounting for, or recognizing the effects of reference rate reform. The amendments in this ASU provide optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. Topic 848 was further amended in January 2021 with ASU No. 2021-01, which provided additional guidance on certain optional expedients and scope of derivative instruments, and in December 2022 with ASU 2022-06, which extended the sunset date of Topic 848 to December 31, 2024 given the UK Financial Conduct Authority ("FCA") March 2021 announcement that the intended cessation date of certain tenors of USD LIBOR would be June 30, 2023. An entity may elect the amendments in these updates at an interim period with adoption methods varying based on transaction type. As of December 31, 2023, we had three interest rate swap contracts with notional values totaling $8.6 million that were indexed to LIBOR, which transitioned to the Secured Overnight

In June 2022, the FASB issued ASU No. 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions. The amendment reduces diversity in practice by clarifying that a separate contractual restriction on the sale of an equity security is not considered part of the unit of account of the equity security and, therefore, is not considered in measuring fair value. In addition, this ASU provided amended examples to illustrate that a restriction that is a characteristic of the equity security, which market participants would take into account when pricing them, would be considered in measuring fair value. This ASU also introduces new disclosure requirements. The amendments are effective prospectively for years beginning after December 15, 2023. Early adoption is permitted for both interim and annual financial statements. As discussed in Note 2, Investment Securities, in July 2023 we sold our remaining shares of Visa Inc. Class B restricted common stock. As a result of the sale, this update will not impact our financial condition, results of operations or disclosures.

In March 2023, the FASB issued ASU No. 2023-01, Leases (Topic 842): Common Control Arrangements. For public companies, the amendment requires entities to amortize leasehold improvements associated with common control lease arrangements over the useful life of the improvements to the common control group, as opposed to the shorter of the remaining lease term and the useful life of the improvements for all other operating leases. The amendments are effective for years beginning after December 15, 2023, and may be adopted either prospectively or retrospectively. Early adoption is permitted for both interim and annual financial statements. We currently do not have common control lease arrangements, and therefore do not anticipate that the amendments will impact our financial condition and results of operations.

In March 2023, the FASB issued ASU No. 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. Under current GAAP, an entity can only elect to apply the proportional amortization method to investments in low-income housing tax credit ("LIHTC") structures. The proportional amortization method results in the cost of the investment being amortized in proportion to the income tax credits and other income tax benefits received, with the amortization of the investment and the income tax credits being presented net in the consolidated statements of income as a component of income tax expense (benefit). The amendments will allow entities to elect to account for all other equity investments made primarily for the purpose of receiving income tax credits to using the proportional amortization method, regardless of the tax credit program through which the investment earns income tax credits, when certain conditions are met. The amendments are effective for fiscal years beginning after December 15, 2023, and may be adopted either on a modified retrospective basis or retrospectively. Other than investments in LIHTC funds, as disclosed in Note 4, Investment Securities, we currently have no other equity investments made primarily for the purpose of receiving income tax credits, and therefore do not anticipate that the amendments will impact our financial condition and results of operations.

In November 2023, the FASB issued ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The amendments are intended to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses, enhanced interim disclosure requirements, clarifying circumstances in which an entity can disclose multiple segment measures of profit or loss, providing new segment disclosure requirements for entities with a single reportable segment, and requiring other disclosures. The amendments are effective for annual reporting periods beginning after December 15, 2023 (i.e., 2024 Form 10-K) and interim periods within fiscal years beginning after December 31, 2024, and shall be applied retrospectively to all prior periods presented in the financial statements. Early adoption is permitted. We currently have only one reportable segment and are evaluating the impact of the amendments on our financial statement disclosures upon adoption.

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments require disaggregated information about the effective tax rate reconciliation and additional disclosures on reconciling items and taxes paid that meet a quantitative threshold. The amendments are effective for annual reporting periods beginning after December 15, 2024, and may be adopted either prospectively or retrospectively. Early adoption is permitted. We are currently evaluating the impact of the amendments on our financial statement disclosures upon adoption.