FORWARD-LOOKING STATEMENTS

This report on Form 10-Q contains forward-looking statements about Westamerica Bancorporation (the “Company”) for which it claims the protection of the safe harbor provisions contained in the Private Securities Litigation Reform Act of 1995. Examples of forward-looking statements include, but are not limited to: (i) projections of revenues, expenses, future credit quality and performance, the appropriateness of the allowance for credit losses, loan growth or reduction, mitigation of risk in the Company’s loan and investment securities portfolios, income or loss, earnings or loss per share, the payment or nonpayment of dividends, capital structure and other financial items; (ii) statements of plans, objectives and expectations of the Company or its management or board of directors, including those relating to products or services; (iii) statements of future economic performance; and (iv) statements of assumptions underlying such statements. Words such as "believes", "anticipates", "expects", “estimates”, "intends", "targeted", "projected", “forecast”, "continue", "remain", "will", "should", "may" and other similar expressions are intended to identify forward-looking statements but are not the exclusive means of identifying such statements.

These forward-looking statements are based on Management’s current knowledge and belief and include information concerning the Company’s possible or assumed future financial condition and results of operations. A number of factors, some of which are beyond the Company’s ability to predict or control, could cause future results to differ materially from those contemplated. These factors include but are not limited to (1) the length and severity of difficulties in the global, national and California economies and the effects of government efforts to address those difficulties; (2) liquidity levels in capital markets; (3) fluctuations in asset prices including, but not limited to stocks, bonds, real estate, and commodities; (4) the effect of acquisitions and integration of acquired businesses; (5) economic uncertainty created by riots, terrorist threats and attacks on the United States, the actions taken in response, and the uncertain effect of these events on the nationallocal, regional and regionalnational economies; (6) changes in the interest rate environment; (7) changes in the regulatory environment; (8) competitive pressure in the banking industry; (9) operational risks including a failure or breach in data processing or security systems or those of third party vendors and other service providers, including as a result of cyber attacks or fraud; (10) volatility of interest rate sensitive loans, deposits and investments; (11) asset/liability management risks and liquidity risks; (12) the effect of natural disasters, including earthquakes, fire, flood, drought, pandemics and other disasters on the Company, including on the uninsured value of the Company’s assets and of loan collateral, the financial condition of debtors and issuers of investment securities, the economic conditions affecting the Company’s market place, and commodities and asset values; (13) changes in the securities markets; and (14) the duration and severity of the COVID-19 pandemic and governmental responses to the pandemic; and (15) the outcome of contingencies, such as legal proceedings. However, the reader should not consider the above-mentioned factors to be a complete set of all potential risks or uncertainties.

Forward-looking statements speak only as of the date they are made. The Company undertakes no obligation to update any forward-looking statements in this report to reflect circumstances or events that occur after the date forward looking statements are made, except as may be required by law. The reader is directed to the Company's Form 8-K filed on April 16, 2020, and the annual report on Form 10-K for the year ended December 31, 2019, for further discussion of factors which could affect the Company's business and cause actual results to differ materially from those expressed in any forward-looking statement made in this report.

PART I - FINANCIAL INFORMATION

Item 1      Financial Statements

See accompanying notes to unaudited consolidated financial statements.

See accompanying notes to unaudited consolidated financial statements.

See accompanying notes to unaudited consolidated financial statements.

See accompanying notes to unaudited consolidated financial statements.

See accompanying notes to unaudited consolidated financial statements.

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

Note 1: Basis of Presentation

The accompanying unaudited consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America for interim financial information and pursuant to the rules and regulations of the Securities and Exchange Commission and follow general practices within the banking industry. The results of operations reflect interim adjustments, all of which are of a normal recurring nature and which, in the opinion of Management, are necessary for a fair presentation of the results for the interim periods presented. The interim results for the three and sixmonths ended March 31,June 30, 2020 are not necessarily indicative of the results expected for the full year. These unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes as well as other information included in the Company's Annual Report on Form 10-K for the year ended December 31, 2019.

Note 2: Accounting Policies

The most significant accounting policies followed by the Company are presented in Note 1 to the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. These policies, along with the disclosures presented in the other financial statement notes and in this discussion, provide information on how significant assets and liabilities are valued in the financial statements and how those values are determined. Based on the valuation techniques used and the sensitivity of financial statement amounts to the methods, assumptions, and estimates underlying those amounts, it is reasonably possible conditions could change materially affecting results of operations and financial conditions.

Application of these principles requires the Company to make certain estimates, assumptions, and judgments that affect the amounts reported in the financial statements and accompanying notes. These estimates, assumptions, and judgments are based on information available as of the date of the financial statements; accordingly, as this information changes, the financial statements could reflect different estimates, assumptions, and judgments. Certain accounting policies inherently have a greater reliance on the use of estimates, assumptions and judgments and as such have a greater possibility of producing results that could be materially different than originally reported. Estimates, assumptions and judgments are necessary when assets and liabilities are required to be recorded at fair value, when a decline in the value of an asset not carried on the financial statements at fair value warrants a writedown or valuation reserve to be established, or when an asset or liability needs to be recorded contingent upon a future event. Carrying assets and liabilities at fair value inherently results in more financial statement volatility. The fair values and the information used to record valuation adjustments for certain assets and liabilities are based either on quoted market prices or are provided by other third-party sources, when available.

Certain amounts in prior periods have been reclassified to conform to the current presentation.

Recently Adopted Accounting Standards

In the threesix months ended March 31,June 30, 2020, the Company adopted the following new accounting guidance:

FASB ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, was issued on June 16, 2016. The ASU significantly changed estimates for credit losses related to financial assets measured at amortized cost and certain other contracts. For estimating credit losses, the FASB replaced the incurred loss model with the current expected credit loss (CECL) model, which accelerated recognition of credit losses. Additionally, credit losses relating to debt securities available-for-sale are recorded through an allowance for credit losses under the new standard. The Company is also required to provide additional disclosures related to the financial assets within the scope of the new standard.

The Company adopted the ASU provisions on a modified retrospective basis on January 1, 2020. Management evaluated available data, defined portfolio segments of loans with similar attributes, and selected loss estimate models for each identified loan portfolio segment. Management measured historical loss rates for each portfolio segment. Management also segmented debt securities held to maturity, selected methods to estimate losses for each segment, and measured a loss estimate. Agency mortgage-backed securities were assigned no credit loss allowance due to the perceived backing of government sponsored entities. Municipal securities were evaluated for risk of default based on credit rating and remaining term to maturity using Moody’s risk of default factors; Moody’s loss upon default factors were applied to the assumed defaulted principal amounts to estimate the amount for credit loss allowance. The adjustment to the allowance for credit losses was recorded through an offsetting after-tax adjustment to shareholders’ equity. The implementing entry increased allowance for credit losses by $2,017 thousand, reduced allowance for credit losses for unfunded credit commitments by $2,107 thousand and increased retained earnings by $52 thousand.

The following table summarizes the impact of adoption of ASU 2016-13.

Debt Securities. Debt securities consist of the U.S. Treasury, securities of government sponsored entities, states, counties, municipalities, corporations, agency and non-agency mortgage-backed securities, and asset-backed securities.collateralized loan obligations. Securities transactions are recorded on a trade date basis. The Company classifies its debt securities in one of three categories: trading, available for sale or held to maturity. Trading securities are bought and held principally for the purpose of selling them in the near term. Trading securities are recorded at fair value with unrealized gains and losses included in net income. Held to maturity debt securities are those securities which the Company has the ability and intent to hold until maturity. Held to maturity debt securities are recorded at cost, adjusted for the amortization of premiums or accretion of discounts. Securities not included in trading or held to maturity are classified as available for sale debt securities. Available for sale debt securities are recorded at fair value. Unrealized gains and losses, net of the related tax effect, on available for sale debt securities are included in accumulated other comprehensive income. Accrued interest is recorded within other assets and reversed against interest income if it is not received.

The Company utilizes third-party sources to value its investment securities; securities individually valued using quoted prices in active markets are classified as Level 1 assets in the fair value hierarchy, and securities valued using quoted prices in active markets for similar securities (commonly referred to as “matrix” pricing) are classified as Level 2 assets in the fair value hierarchy. The Company validates the reliability of third-party provided values by comparing individual security pricing for securities between more than one third-party source. When third-party information is not available, valuation adjustments are estimated in good faith by Management and classified as Level 3 in the fair value hierarchy.

The Company follows the guidance issued by the Board of Governors of the Federal Reserve System, “Investing in Securities without Reliance on Nationally Recognized Statistical Rating Agencies” (SR 12-15) and other regulatory guidance when performing investment security pre-purchase analysis or evaluating investment securities for credit loss. Credit ratings issued by recognized rating agencies are considered in the Company’s analysis only as a guide to the historical default rate associated with similarly-rated bonds.

To the extent that debt securities in the held-to-maturity portfolio share common risk characteristics, estimated expected credit losses are calculated in a manner like that used for loans held for investment. That is, for pools of such securities with common risk characteristics, the historical lifetime probability of default and severity of loss in the event of default is derived or obtained from external sources and adjusted for the expected effects of reasonable and supportable forecasts over the expected lives of the securities on those historical credit losses. Expected credit loss on each security in the held-to-maturity portfolio that do not share common risk characteristics with any of the pools of debt securities is individually evaluated and a reserve for credit losses is established at the difference between the discounted value of the expected future cash flows, based on the original effective interest rate, and the recorded amortized cost basis of the security. For certain classes of debt securities, the bank considers the history of credit losses, current conditions and reasonable and supportable forecasts, which may indicate that the expectation that nonpayment of the amortized cost basis is or continues to be zero. Therefore, for those securities, the bank does not record expected credit losses.

AFS debt securities in unrealized loss positions are evaluated for credit related loss at least quarterly. For AFS debt securities, a decline in fair value due to credit loss results in recording an allowance for credit losses to the extent the fair value is less than the amortized cost basis. Declines in fair value that have not been recorded through an allowance for credit losses, such as declines due to changes in market interest rates, are recorded through other comprehensive income, net of applicable taxes. Although these evaluations involve significant judgment, an unrealized loss in the fair value of a debt security is generally considered to not be related to credit when the fair value of the security is below the carrying value primarily due to changes in risk-free interest rates, there has not been significant deterioration in the financial condition of the issuer, and the Company does not intend to sell nor does it believe it will be required to sell the security before the recovery of its cost basis.

If the Company intends to sell a debt security or more likely than not will be required to sell the security before recovery of its amortized cost basis, the debt security is written down to its fair value and the write down is charged against the allowance for credit losses with any incremental loss reported in earnings.

Purchase premiums are amortized to the earliest call date and purchase discounts are amortized to maturity as an adjustment to yield using the effective interest method. Unamortized premiums, unaccreted discounts, and early payment premiums are recognized as a component of gain or loss on sale upon disposition of the related security. Interest and dividend income are recognized when earned. Realized gains and losses from the sale of available for sale securities are included in earnings using the specific identification method.

Nonmarketable Equity Securities. Nonmarketable equity securities include securities that are not publicly traded, such as Visa Class B common stock, and securities acquired to meet regulatory requirements, such as Federal Reserve Bank stock, which are restricted. These restricted securities are accounted for under the cost method and are included in other assets. The Company reviews those assets accounted for under the cost method at least quarterly. The Company’s review typically includes an analysis of the facts and circumstances of each investment, the expectations for the investment’s cash flows and capital needs, the viability of its business model and any exit strategy. When the review indicates that impairment exists the asset value is reduced to fair value. The Company recognizes the estimated loss in noninterest income.

Loans. Loans are stated at the principal amount outstanding, net of unearned discount and unamortized deferred fees and costs. Interest is accrued daily on the outstanding principal balances.balances and included in other assets. Loans which are more than 90 days delinquent with respect to interest or principal, unless they are well secured and in the process of collection, and other loans on which full recovery of principal or interest is in doubt, are placed on nonaccrual status. Interest previously accrued on loans placed on nonaccrual status is charged against interest income. In addition, some loans secured by real estate and commercial loans to borrowers experiencing financial difficulties are placed on nonaccrual status even though the borrowers continue to repay the loans as scheduled. When the ability to fully collect nonaccrual loan principal is in doubt, payments received are applied against the principal balance of the loans on a cost-recovery method until such time as full collection of the remaining recorded balance is expected. Any additional interest payments received after that time are recorded as interest income on a cash basis. Nonaccrual loans are reinstated to accrual status when none of the loan’s principal and interest is past due and improvements in credit quality eliminate doubt as to the full collectability of both principal and interest, or the loan otherwise becomes well secured and in the process of collection. Certain consumer loans or auto receivables are charged off against the allowance for credit losses when they become 120 days past due.

Loans that do not share risk characteristics with other loans in the pools are evaluated individually, including certain classified loans and nonaccrual loans with outstanding principal balances in excess of $500 thousand, and “troubled debt restructured” loans. In general, a restructuring constitutes aA troubled debt restructuring (“TDR”) occurs when the Company, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower it would not otherwise consider. The Company follows its general nonaccrual policy for troubled debt restructurings.TDRs. Performing troubled debt restructuringsTDRs are reinstated to accrual status when improvements in credit quality eliminate the doubt as to full collectability of both principal and interest. Under the Coronavirus Aid, Relief, and Economic Security Act, banks may elect to deem that loan modifications do not result in TDRs if they are (1) related to the novel coronavirus disease; (2) executed on a loan that was not more than 30 days past due as of December 31, 2019; and (3) executed between March 1, 2020, and the earlier of (A) 60 days after the date of termination of the National Emergency or (B) December 31, 2020.At March 31, 2020, the Company has not made any such modifications.

Allowance for Credit Losses. The Company extends loans to commercial and consumer customers primarily in Northern and Central California. These lending activities expose the Company to the risk borrowers will default, causing loan losses. The Company’s lending activities are exposed to various qualitative risks. All loan segments are exposed to risks inherent in the economy and market conditions. Significant risk characteristics related to the commercial loan segment include the borrowers’ business performance and financial condition, and the value of collateral for secured loans. Significant risk characteristics related to the commercial real estate segment include the borrowers’ business performance and the value of properties collateralizing the loans. Significant risk characteristics related to the construction loan segment include the borrowers’ performance in successfully developing the real estate into the intended purpose and the value of the property collateralizing the loans. Significant risk characteristics related to the residential real estate segment include the borrowers’ financial wherewithal to service the mortgages and the value of the property collateralizing the loans. Significant risk characteristics related to the consumer loan segment include the financial condition of the borrowers and the value of collateral securing the loans.