Basis of Presentation: The accompanying Unaudited Consolidated Financial Statements of Peoples Bancorp Inc. and its subsidiaries ("Peoples" refers to Peoples Bancorp Inc. and its consolidated subsidiaries collectively, except where the context indicates the reference relates solely to Peoples Bancorp Inc.) have been prepared in accordance with accounting principles generally accepted in the United States ("US GAAP") for interim financial information and the instructions for Form 10-Q and Article 10 of Regulation S-X. Accordingly, these financial statements do not contain all of the information and footnotes required by US GAAP for annual financial statements and should be read in conjunction with Peoples’ Annual Report on Form 10-K for the fiscal year ended December 31, 2019 ("Peoples' 2019 Form 10-K").

The accounting and reporting policies followed in the presentation of the accompanying Unaudited Consolidated Financial Statements are consistent with those described in "Note 1 Summary of Significant Accounting Policies" of the Notes to the Consolidated Financial Statements included in Peoples’ 2019 Form 10-K, as updated by the information contained in this Form 10-Q. Management has evaluated all significant events and transactions that occurred after September 30, 2020 for potential recognition or disclosure in these unaudited consolidated financial statements. In the opinion of management, these unaudited consolidated financial statements reflect all adjustments necessary to present fairly such information for the periods and at the dates indicated. Such adjustments are normal and recurring in nature. Intercompany accounts and transactions have been eliminated. The Consolidated Balance Sheet at December 31, 2019, contained herein, has been derived from the audited Consolidated Balance Sheet included in Peoples’ 2019 Form 10-K.

The preparation of the consolidated financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Results of operations for interim periods are not necessarily indicative of the results to be expected for the full year, due in part to seasonal variations and unusual or infrequently occurring items.

New Accounting Pronouncements: From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board ("FASB") or other standard setting bodies that are adopted by Peoples as of the required effective dates. The following should be read in conjunction with "Note 1 Summary of Significant Accounting Policies" of the Notes to the Consolidated Financial Statements included in Peoples’ 2019 Form 10-K. Unless otherwise discussed, management believes the impact of any recently issued standards, including those issued but not yet effective, will not have a material impact on Peoples' financial statements taken as a whole.

Accounting Standards Update ("ASU") 2020-04 - Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. This guidance provides optional expedients and exceptions for applying US GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. This update is effective as of March 12, 2020 through December 31, 2022. Per the guidance, Peoples is continuing to evaluate the impact of ASU 2020-04 on Peoples' consolidated financial statements.

ASU 2016-13 - Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This accounting guidance replaces the "incurred loss" model for recognizing credit losses with an "expected loss" model, referred to as the Current Expected Credit Loss ("CECL") model. Under the CECL model, Peoples is required to present certain financial assets carried at amortized cost, such as loans held-for-investment and held-to-maturity investment securities, at the net amount expected to be collected. ASU 2018-19 clarified that receivables arising from operating leases are not within the scope of Accounting Standards Codification ("ASC") 326-20, and should be accounted for according to ASC 842.

The measurement of expected credit losses is to be based on information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The measurement is to take place at the time the financial asset is first added to the balance sheet and periodically thereafter. This differs significantly from the "incurred loss" model under previous US GAAP accounting guidance, which delayed recognition until it was probable a loss had been incurred.

Peoples adopted ASU 2016-13 using the modified retrospective method for all financial assets measured at amortized cost on January 1, 2020. Reporting periods beginning after December 31, 2019 are presented as required by ASU 2016-13, while prior period amounts continue to be reported in accordance with previously applicable US GAAP requirements. Peoples is using the prospective transition approach for financial assets purchased with credit deterioration that were previously classified as purchased credit impaired assets and accounted for under ASC 310-30.

As of January 1, 2020, Peoples recorded a one-time cumulative-effect adjustment to reduce retained earnings by $3.7 million, net of statutory corporate federal income taxes, an increase in allowance for credit losses of $5.8 million and an increase in unfunded

commitment liability of $1.5 million. On January 1, 2020, the amortized cost basis of the purchased credit deteriorated assets was adjusted to reflect the addition of $2.6 million to establish the allowance for credit losses. The remaining interest-related discount is being accreted into interest income at the effective interest rate beginning on January 1, 2020. As of January 1, 2020, Peoples did not record an allowance for credit losses for available-for-sale investment securities, as all unrealized losses on these securities were deemed to be non-credit in nature, with no credit deterioration upon review by Peoples. Peoples recorded an allowance for credit losses for held-to-maturity securities of $7,000 as of January 1, 2020.



(Dollars in thousands)	As Reported Under ASC 326 January 1, 2020		Pre-ASC 326 Adoption December 31, 2019		Impact of ASC 326 Adoption
Assets:
Loans, at amortized cost	$	2,876,147	$	2,873,525	$	2,622

Allowance for credit losses on loans:
Construction	651		1,188		(537)
Commercial real estate, other	8,549		6,560		1,989
Commercial and industrial	5,820		8,568		(2,748)
Residential real estate	4,360		1,296		3,064
Home equity lines of credit	1,572		612		960
Consumer, indirect	5,389		2,942		2,447
Consumer, direct	890		296		594
Deposit account overdrafts	94		94		—
Allowance for credit losses on loans	27,325		21,556		5,769
Liabilities:
Allowance for credit losses for unfunded commitments	$	1,495	$	—	$	1,495

Investment Securities: Investment securities are recorded initially at cost, which includes premiums and discounts if purchased at other than par or face value. Peoples amortizes premiums and accretes discounts as an adjustment to interest income on a level yield basis. The cost of investment securities sold, excluding equity investment securities, and any resulting gain or loss, is based on the specific identification method and recognized as of the trade date. The cost of equity investment securities is based on the weighted-average method.

Peoples determines the appropriate classification of investment securities at the time of purchase. Held-to-maturity securities are those securities that Peoples has the positive intent and ability to hold to maturity and are recorded at amortized cost. Available-for-sale securities are those securities that would be available to be sold in the future in response to Peoples' liquidity needs, changes in market interest rates, and asset-liability management strategies, among other considerations. Available-for-sale securities are reported at fair value, with unrealized gains and losses reported in total stockholders' equity as a separate component of accumulated other comprehensive income or loss, net of applicable deferred income taxes.

Certain restricted equity investment securities that do not have readily determinable fair values and for which Peoples does not exercise significant influence, are carried at cost. These cost method securities are reported in other investment securities on the Unaudited Consolidated Balance Sheets and consist primarily of shares of the Federal Home Loan Bank of Cincinnati (the "FHLB") and the Federal Reserve Bank of Cleveland (the "FRB").

Peoples evaluates available-for-sale investment securities on a quarterly basis to determine how much, if any, allowance for credit losses is required. Peoples reviews available-for-sale investment securities at an unrealized loss position, with potential exposure to a credit event (which excludes U.S. government and U.S. government sponsored agency securities) to determine if the unrealized loss was credit-related. An allowance for credit losses is recorded to the extent that the unrealized losses are credit-related and likely to be permanent.

Peoples evaluates held-to-maturity investment securities on a quarterly basis in determining an allowance for credit losses. Peoples has determined that the loss given default for U.S. government sponsored enterprise investment securities is zero, due to the fact that it is unlikely the ultimate guarantor (the U.S. government) would not perform on its implicit guarantee in the event of default. The remaining securities are included in the calculation of the allowance for credit losses for held-to-maturity investment securities.

Loans: Loans originated that Peoples has the positive intent and ability to hold for the foreseeable future or to maturity or payoff are reported at the principal balance outstanding, net of deferred loan fees and costs, purchase premiums and discounts, charge-offs and an allowance for credit losses. The foreseeable future is based upon current market conditions and business strategies, as well as balance sheet management and liquidity. As the conditions change, so may management's view of the foreseeable future.

Peoples considers loans past due if any required principal and interest payments have not been received as of the date such payments were required to be made under the terms of the loan agreement. Upon detection of the reduced ability of a borrower to meet cash flow obligations, consumer and residential real estate loans are typically charged down to the net realizable value, with the residual balance placed on nonaccrual status. Loans deemed to be uncollectable are charged against the allowance for credit losses, while recoveries of previously charged off amounts are credited to the allowance for credit losses.

Loans acquired in a business combination that have evidence of more than insignificant credit deterioration, which includes loans that Peoples believes it is probable that Peoples will be unable to collect all contractually required payments, are considered "purchased credit deteriorated" loans. These loans are recorded at the purchase price, and an allowance for credit losses is determined using the same methodology as for other loans. The initial allowance for credit losses determined on a collective basis is allocated to individual loans. The total of the purchase price and allowance for credit losses is the initial amortized cost basis of these loans. The variance between the initial amortized cost basis and the par value of the loan is considered an interest premium or discount, which is amortized or accreted into interest income on a level yield method over the life of the loan.

Loans acquired in a business combination that are not considered purchased credit deteriorated are recorded at the fair value and the difference between the acquisition date fair value and the contractual amounts due at the acquisition date represents the discount or premium to a loan's cost basis and is accreted or amortized to interest income over the loan's remaining life using the level yield method.

Allowance for Credit Losses: The allowance for credit losses is a valuation reserve established through the provision for credit losses charged against income. The allowance for credit losses is estimated by management using relevant available information, from both internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts.

The allowance for credit losses is measured on a pool basis, with loans collectively evaluated when similar risk characteristics exist. Peoples evaluated risk characteristics, including but not limited to: internal or third-party credit scores or credit ratings, risk ratings or classifications, financial asset type, collateral type, size, effective interest rate, term, geographical location, industry of the borrower, vintage, historical or credit loss patterns and reasonable and supportable forecast periods. Peoples identified 17 segments for which it believes there are similar risk characteristics and utilized a discounted cash flow methodology in determining an allowance for credit losses for each segment.

In estimating credit losses, Peoples uses a loss driver method, which analyzes one or more economic variables to the change in default rate using a regression analysis. Variables that had a strong correlation were selected as economic factors, or variables, for the model. If a single variable was not found to be strongly correlated, additional variables were included. Peoples utilizes the U.S. unemployment, Ohio unemployment, Ohio Gross Domestic Product, and the Ohio Case Shiller Home Price Indices as economic factors in modeling.

Peoples measured loss given default at the segment level due to statistical considerations using historical information. Peoples also utilized peer data due to somewhat volatile loss history in certain segments to normalize default curves, which provided more meaningful results.

Peoples models extensions of contractual terms in the following situations: when a loan is 60 days or more past due, when a partial charge-off has occurred, if the loan is in non-accrual status, if a troubled debt restructuring ("TDR") has occurred, or if the loan is grade 5 or higher. When any of these criteria are met and the loan matures within the next 12 months, the loan will be modeled to extend for an additional 12 months.

In general, Peoples completes a quarterly evaluation based on several qualitative factors to determine if there should be adjustments made to the allowance for credit losses. These factors include economic conditions, collateral, concentrations, troubled assets, Peoples' loss trends, peer loss trends, delinquency trends, portfolio composition and loan growth, underwriting, and certain other risks.

The allowance for credit losses related to specific loans was based on management's estimate of potential losses on impaired loans as determined by (1) the present value of expected future cash flows, (2) the fair value of collateral if the loan is determined to be collateral dependent, or (3) the loan's observable market price.

Peoples categorized loans involving commercial borrowers into risk categories based upon an established grading matrix. This system was used to manage the risk within Peoples' commercial lending activities, evaluate changes in the overall credit quality of the loan portfolio and evaluate the appropriateness of the allowance for credit losses. Loan grades are assigned at the time a new loan or lending commitment is extended by Peoples and may be changed at any time when circumstances warrant. Loans to borrowers with an aggregate unpaid principal balance in excess of $1 million are reviewed at least on an annual basis for possible credit deterioration. Loan relationships whose aggregate credit exposure to Peoples is equal to or less than $1 million are reviewed at least on an event

driven basis. Triggers for review include knowledge of adverse events affecting the borrower's business, receipt of financial statements indicating deteriorating credit quality or other similar events. Adversely classified loans are reviewed on a quarterly basis.

The primary factors considered when assigning a risk grade to a loan include (1) reliability and sustainability of the primary source of repayment, (2) past, present and projected financial condition of the borrower, and (3) current economic and industry conditions. Other factors that could influence the risk grade assigned include the type and quality of collateral and the strength of any guarantors. The primary source of repayment for commercial real estate loans and commercial and industrial loans is normally the operating cash flow of the business available to repay debt. Management's analysis of operating cash flow for commercial real estate loans secured by non-owner occupied properties takes into account factors such as rent rolls and vacancy statistics. Management's analysis of operating cash flow for commercial real estate loans secured by owner occupied properties and all commercial and industrial loans considers the profitability, liquidity and leverage of the business. The evaluation of construction loans includes consideration of the borrower's ability to complete construction within the established budget.

The primary factors considered when classifying residential real estate, home equity lines of credit and consumer loans include the loan's past due status and declaration of bankruptcy by the borrower(s). The classification of residential real estate and home equity lines of credit also takes into consideration the current value of the underlying collateral.

Unfunded Commitments: Peoples also completes a quarterly evaluation for unfunded commitments for loans that are not conditionally cancellable, which includes construction loans, floor plan lines of credit, home equity lines of credit, other credit lines and letters of credit. Peoples performed a study to determine the historical funding rates of unadvanced portions of loans, and applied these funding rates to the unfunded commitments at period end. The loss rates, including qualitative factors, in determining the allowance for credit losses were applied at the segment level to the unfunded commitment amount to determine the allowance for credit loss liability for unfunded commitments.

Troubled Debt Restructuring ("TDR"): The restructuring of a loan is considered a TDR if both (1) the borrower is experiencing financial difficulties and (2) the creditor has granted a concession. Loans acquired that are restructured after acquisition are not considered TDRs if the loans evidenced credit deterioration as of the acquisition date and are accounted for in pools of purchased credit deteriorated loans.

In assessing whether or not a borrower is experiencing financial difficulties, Peoples considers information currently available regarding the financial condition of the borrower. This information includes, but is not limited to, whether (1) the borrower is currently in payment default on any of the borrower's debt; (2) a payment default is probable in the foreseeable future without the modification; (3) the borrower has declared or is in the process of declaring bankruptcy; and (4) the borrower's projected cash flow is insufficient to satisfy contractual payments due under the original terms of the loan without a modification.

Peoples considers all aspects of the modification to loan terms to determine whether or not a concession has been granted to the borrower. Key factors considered by Peoples include the borrower's ability to access funds at a market rate for loans with similar risk characteristics, the significance of the modification relative to the unpaid principal loan balance or collateral value underlying the loan, and the significance of a delay in the timing of payments relative to the original contractual terms of the loan. The most common concessions granted by Peoples generally include one or more modifications to the terms of the loan, such as (1) a reduction in the interest rate for the remaining life of the loan, (2) an extension of the maturity date at an interest rate lower than the current market rate for a new loan with similar risk, (3) a temporary period of interest-only payments, and (4) a reduction in the contractual payment amount for either a short period or the remaining term of the loan. All TDRs are evaluated individually to determine if a write-down is required and if they should be on accrual or nonaccrual status.

On March 22, 2020, federal and state banking regulators issued a joint statement, with which the FASB concurred as to the approach, regarding accounting for loan modifications for borrowers affected by COVID-19. In this guidance, short-term modifications, made on a good faith basis in response to COVID-19, to borrowers who were current prior to any relief, are not considered TDRs. This includes short-term modifications such as payment deferrals, fee waivers, extensions of repayment terms, or other delays in payment which are insignificant. Under the guidance, borrowers that are considered current are those that are less than 30 days past due on their contractual payments at the time a modification program is implemented. In addition, modification or deferral programs mandated by the U.S. federal government or any state government related to COVID-19 are not in the scope of accounting for troubled debt restructurings defined in ASC 310-40. Based on this guidance, Peoples does not classify COVID-19 loan modifications as TDRs.

On August 3, 2020, federal and state banking regulators issued a joint statement, encouraging financial institutions to consider prudent accommodation options to mitigate losses for the borrower and financial institution beyond the initial accommodation period. In this guidance, institutions should also provide consumers with available options for repaying missed payments at the end of their accommodation to avoid delinquencies, as well as options for changes to terms to support sustainable and affordable payments for the long term. These considerations should also include prudent risk management practices at the financial institution based on the credit risk of the borrower. Peoples is actively working with its customers to address any further accommodation needs while carefully evaluating the associated credit risk of the borrowers.

Nonaccrual loans: Peoples discontinues the accrual of interest on a loan when conditions cause management to believe collection of all or any portion of the loan's contractual interest is doubtful. Such conditions may include the borrower being 90 days or more past due on any contractual payments, or current information regarding the borrower's financial condition and repayment ability. All unpaid accrued interest deemed uncollectable is reversed, which reduces Peoples' net interest income. Interest received on nonaccrual loans is included in income only if principal recovery is reasonably assured.

Under the Coronavirus Aid, Relief and Economic Security ("CARES") Act, borrowers who were making payments as required and were not considered past due prior to becoming affected by COVID-19 and then receive payment accommodations as a result of the effects of COVID-19 generally would not be reported as past due. If Peoples agrees to a payment deferral for a borrower under the CARES Act, this may result in no contractual payments being past due, and the loans are not considered past due during the period of the deferral. During the time that Peoples maintains these short-term arrangements with borrowers, under the guidance, it is not to report the loans as nonaccrual.

Interest Income Recognition: Interest income on loans and investment securities is recognized by methods that result in level rates of return on principal amounts outstanding. This includes yield adjustments resulting from the amortization of premiums on investment securities, loan costs and premiums, and accretion of discounts on investment securities, loan fees and discounts. Loans that have been placed on nonaccrual, and are subsequently returned to accruing status, recognize interest income similar to other accruing loans once they return to accruing status. Prior accrued interest that was reversed when the loan was placed on nonaccrual is recognized when received, after all of the principal of the loan outstanding has been paid. Since mortgage-backed securities comprise a sizable portion of Peoples' investment portfolio, a significant increase in principal payments on those securities can impact interest income due to the corresponding acceleration of premium amortization or discount accretion.