Summary of Significant Accounting Policies (Policies)	12 Months Ended
Dec. 31, 2023
Accounting Policies [Abstract]
Nature of Operations	Nature of Operations— Wesbanco, Inc. (“Wesbanco” or the “Company”) is a bank holding company offering a full range of financial services, including trust and investment services, mortgage banking, insurance and brokerage services. Wesbanco’s defined business segments are community banking and trust and investment services. As of December 31, 2023, Wesbanco’s banking subsidiary, Wesbanco Bank, Inc. (“Wesbanco Bank” or the “Bank”), headquartered in Wheeling, West Virginia, operates through 192 branches and 183 ATM machines in West Virginia, Ohio, western Pennsylvania, Kentucky, southern Indiana and Maryland. In addition, Wesbanco operates an insurance brokerage company, Wesbanco Insurance Services, Inc., and a full service broker/dealer, Wesbanco Securities, Inc.
Use of Estimates	Use of Estimates— The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Principles of Consolidation	Principles of Consolidation— The Consolidated Financial Statements include the accounts of Wesbanco and those entities in which Wesbanco has a controlling financial interest. All intercompany balances and transactions have been eliminated in consolidation. Wesbanco determines whether it has a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity. A voting interest entity is an entity in which the total equity investment at risk is sufficient to enable the entity to finance itself independently and provides the equity holders with the obligation to absorb losses, the right to receive residual returns and the right to make financial and operating decisions. Wesbanco consolidates voting interest entities in which it owns all, or at least a majority (generally, greater than 50%) of the voting interest. Variable interest entities (“VIE”) are entities that in general either do not have equity investors with voting rights or that have equity investors that do not provide sufficient financial resources for the entity to support its activities. Wesbanco uses VIEs in various legal forms to conduct normal business activities. Wesbanco reviews the structure and activities of VIEs for possible consolidation. A controlling financial interest in a VIE is present when an enterprise has both the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and the obligation to absorb losses of the VIE that could potentially be significant to the VIE or the right to receive benefits of the VIE that could potentially be significant to the VIE. A VIE often holds financial assets, including loans or receivables, real estate or other property. The company with a controlling financial interest, known as the primary beneficiary, is required to consolidate the VIE. Wesbanco has eleven wholly-owned trust subsidiaries (collectively, the “Trusts”), for which it does not have the power to direct the activities of a VIE that most significantly impact the VIE’s economic performance nor the obligation to absorb losses or the right to receive a benefits from the VIE that could be potentially significant to the VIE. Accordingly, the Trusts and their net assets are not included in the Consolidated Financial Statements. However, the junior subordinated deferrable interest debentures issued by Wesbanco to the Trusts (refer to Note 10, “Subordinated Debt and Junior Subordinated Debt”) and the common stock issued by the Trusts is included in the Consolidated Balance Sheets. Wesbanco also owns non-controlling variable interests in certain limited partnerships for which it does not have the power to direct the activities of a VIE that most significantly impact the VIE’s economic performance nor the obligation to absorb losses or the right to receive a benefit from the VIE that could be potentially significant to the VIE. These VIEs are not consolidated into Wesbanco’s financial statements because Wesbanco is not considered the primary beneficiary. These investments are accounted for using the equity method of accounting and are included in other assets in the Consolidated Balance Sheets. Refer to Note 7, “Investments in Limited Partnerships” for further detail.
Business Combinations	Business Combinations— Business combinations are accounted for by applying the acquisition method. As of acquisition date, the identifiable assets acquired and liabilities assumed are measured at fair value and recognized separately from goodwill. Results of operations of the acquired entities are included in the consolidated statement of income from the date of acquisition.
Revenue Recognition	Revenue Recognition— Interest income, net securities gains (losses) and bank-owned life insurance are not in scope of ASC 606, Revenue from Contracts with Customers. For the revenue streams in scope of ASC 606, which include trust fees, service charges on deposits, net securities brokerage revenue, debit card sponsorship income, payment processing fees, electronic banking fees, net swap fee and valuation income, mortgage banking income and net gain or loss on sale of other real estate owned and other assets, there are no significant judgments related to the amount and timing of revenue recognition. Trust fees: Fees are earned over a period of time between monthly and annually, per the related fee schedule. The fees are earned ratably over the period for investment, safekeeping and other services performed by Wesbanco. The fees are accrued when earned based on the daily asset value on the last day of the quarter. In most cases, the fees are directly debited from the customer account. WesMark fees consist of investment advisory fees and shareholder service fees and are paid to Wesbanco by the WesMark mutual funds on a monthly basis for Wesbanco’s involvement with the management of the funds. Service charges on deposits: There are monthly service charges for both commercial and personal banking customers, which are earned over the month per the related fee schedule based on the customers’ deposits. There are also transaction-based fees, which are earned based on specific transactions or customer activity within the customers’ deposit accounts. These are earned at the time the transaction or customer activity occurs. The fees are debited from the customer account. Net securities brokerage revenue: Commission income is earned based on customer transactions and management of investments. The commission income from customers’ transactions is recognized when the transaction is complete and approved. Annuity commissions are earned based upon the carrier’s commission rate for the annuity product chosen by the investing customer. The commission income from the management of investments over time is earned continuously over a quarterly period. Payment processing fees: Payment processing fees are earned from the bill payment and electronic funds transfer (“EFT”) services provided under the name FirstNet. The fees are derived from both the individual consumer banking transactions and from businesses or service providers through monthly billing for total transactions occurring. These fees are earned at the time the transaction or customer activity occurs. The fees are debited from the customers’ deposit accounts or charged directly to the business or service provider. Payment processing fees are recorded within other non-interest income on the Consolidated Statements of Income. Electronic banking fees: Interchange and ATM fees are earned based on customer and ATM transactions. Revenue is recognized when the transaction is settled. Net swap fee and valuation income: Fee income is earned when Wesbanco executes interest rate swaps and caps with its commercial banking customers. These swaps and caps are economically hedged by offsetting interest rate swaps and caps that Wesbanco executes with a third party, generating the fee income. The fee income is recognized when the swap or cap transaction is complete and approved by all parties. Mortgage banking income: Income is earned when Wesbanco-originated loans are sold to an investor on the secondary market. The investor bids on the loans. If the price is accepted, Wesbanco delivers the loan documents to the investor. Once received and approved by the investor, revenue is recognized and the loans are derecognized from the Consolidated Balance Sheet. Prior to the loans being sold, they are classified as loans held for sale. Additionally, the changes in the fair value of the loans held for sale, loan commitments and related derivatives are included in mortgage banking income and are somewhat offset by any deferred direct origination costs, such as mortgage loan officer commissions. Net gain or loss on sale of other real estate owned and other assets: Net gain or loss on other real estate owned is recorded when the property is sold to a third party and the Bank collects substantially all of the consideration to which it is entitled in exchange for the transfer of the property. Net gain or loss on other assets can include, among other things, the sale of fixed assets, the change in fair value of the underlying investments funded by Wesbanco’s Community Development Corporation (“Wesbanco CDC”) and residual income earned from the sale of Wesbanco’s debit card sponsorship program. Gains or losses are recognized upon receipt of consideration and subsequent transfer of the property for fixed asset sales. The change in fair value of Wesbanco CDC investments occurs upon the change in the underlying investments as these are accounted for utilizing the equity method, and as such, are not within the scope of ASC 606. Residual income from the sale of the debit card sponsorship program is recognized over time as per the signed agreement between Wesbanco and the buyer.
Cash and Cash Equivalents	Cash and Cash Equivalents— Cash and cash equivalents include cash and due from banks, due from banks – interest bearing and federal funds sold. Generally, federal funds are sold for one-day periods.
Securities	Securities— Equity securities: Equity securities, which include investments in various mutual funds held in grantor trusts formed in connection with the Company’s deferred compensation plan, are reported at fair value with the gains and losses included in non-interest income. Available-for-sale debt securities: Debt securities not classified as held-to-maturity are classified as available-for-sale. These securities may be sold at any time based upon management’s assessment of changes in economic or financial market conditions, interest rate or prepayment risks, liquidity considerations and other factors. These securities are stated at fair value, with the fair value adjustment, net of tax, reported as a separate component of accumulated other comprehensive income. Held-to-maturity debt securities: Securities that are purchased with the positive intent and ability to be held until their maturity are stated at cost and adjusted for amortization of premiums and accretion of discounts. Transfers of debt securities into the held-to-maturity category from the available-for-sale category are made at fair value at the date of transfer. The unrealized gain or loss at the date of transfer is retained in other comprehensive income and in the carrying value of the held-to-maturity securities. Such amounts are amortized over the remaining life of the security. Certain securities with less than 15% of their original purchase price remaining or that have experienced measurable credit deterioration may be sold. Cost method investments: Securities that do not have readily determinable fair values and for which Wesbanco does not exercise significant influence are carried at cost. Cost method investments consist primarily of Federal Home Loan Bank (“FHLB”) stock and are included in other assets in the Consolidated Balance Sheets. Cost method investments are evaluated for impairment whenever events or circumstances suggest that their carrying value may not be recoverable. Securities acquired in acquisitions are recorded at fair value with the premium or discount derived from the fair market value adjustment recognized into interest income on a level yield basis over the remaining life of the security. Gains and losses: Net realized gains and losses on sales of securities are included in non-interest income. The cost of securities sold is based on the specific identification method. The gain or loss is determined as of the trade date. Unrealized gains and losses on available-for-sale securities are recorded through other comprehensive income. Amortization and accretion: Generally, premiums are amortized to call date and discounts are accreted to maturity, on a level yield basis. Current expected credit losses (“CECL”): The corporate and municipal bonds in Wesbanco’s held-to-maturity debt portfolio are analyzed quarterly for CECL. Wesbanco uses a database of historical financials of all corporate and municipal issuers and actual historic default and recovery rates on rated and non-rated transactions to estimate CECL on an individual security basis. The CECL calculated amount is adjusted quarterly and is recorded in an allowance for expected credit losses on the balance sheet that is deducted from the amortized cost basis of the held-to-maturity portfolio as a contra asset, with the losses recorded on the income statement within the provision for credit losses. Because Wesbanco’s held-to-maturity investments in mortgage-backed securities and collateralized mortgage obligations are all either issued by a direct governmental entity or a government-sponsored entity, there is no historical evidence supporting the establishment of a CECL reserve; therefore, Wesbanco has estimated these losses at zero, and will monitor this assumption in the future for any economical or governmental policies that could affect this assumption. Available-for-sale debt security impairment: An available-for-sale debt security is considered impaired if its fair value is less than its amortized cost basis. If Wesbanco intends to sell or will be required to sell the investment prior to recovery of cost, the entire impairment will be recognized immediately in the Consolidated Statements of Income. If Wesbanco does not intend to sell, nor is it more likely than not that it will be required to sell impaired securities prior to the recovery of their cost, a review is conducted each quarter to determine if any portion of the impairment is due to credit losses. In estimating credit losses, Wesbanco first considers the financial condition and near-term prospects of the issuer, evaluating any credit downgrades or other indicators of a potential credit problem, the type of security, either fixed or equity, and the receipt of principal and interest according to the contractual terms. If there are no indications that the impairment is credit-related, the impairment is recognized in other comprehensive income in the Consolidated Balance Sheet. If the impairment is considered to be credit-related based on management’s review of the various factors that indicate credit impairment, the amount of credit impairment is calculated using the present value of future expected cash flows. If the present value of future expected cash flows is less than the amortized cost basis of the security, a credit loss exists and an allowance for expected credit losses is recorded, limited by the total unrealized loss on the security, and is recognized in the Consolidated Statements of Income. The non-credit portion is calculated as the difference between the total unrealized loss and the credit portion of that loss and is recognized in other comprehensive income.
Loans and Loans Held for Sale	Loans and Loans Held for Sale — Loans originated by Wesbanco are reported at the principal amount outstanding, net of unearned income including credit valuation adjustments, unamortized deferred loan fee income and loan origination costs. Interest is accrued as earned on loans except where doubt exists as to collectability, in which case accrual of income is discontinued. Loans originated and intended for sale are carried, in aggregate, at fair value. The use of a valuation model using quoted prices of similar instruments are significant observable inputs in arriving at the fair value of loans held for sale. Loan origination fees and direct costs are deferred and accreted or amortized into interest income, as an adjustment to the yield, over the life of the loan using the level yield method, or an approximation thereof. When a loan is paid off, the remaining unaccreted or unamortized net origination fees or costs are immediately recognized into income. Loans are generally placed on non-accrual when they are 90 days past due, unless the loan is well-secured and in the process of collection. Loans may be returned to accrual status when a borrower has resumed paying principal and interest for a sustained period of at least six months and Wesbanco is reasonably assured of collecting the remaining contractual principal and interest. Loans are returned to accrual status at an amount equal to the principal balance of the loan at the time of non-accrual status less any payments applied to principal during the non-accrual period. A loan is considered non-performing, based on current information and events, if it is probable that Wesbanco will be unable to collect the payments of principal and interest when due according to the original contractual terms of the loan agreement. Wesbanco recognizes interest income on non-accrual loans on the cash basis only if recovery of principal is reasonably assured. All non-accrual loans are considered non-performing loans. Consumer loans are charged down to the net realizable value at 120 days past due for closed-end loans and 180 days past due for open-end revolving lines of credit. Residential real estate loans are charged down to the net realizable value of the collateral at 180 days past due. Commercial loans are charged down to the net realizable value when it is determined that Wesbanco will be unable to collect the principal amount in full. Loans are reclassified to other assets at the net realizable value when foreclosure or repossession of the collateral occurs. Refer to the “Other Real Estate Owned and Repossessed Assets” policy below for additional detail.
Modifications for Borrowers Experiencing Financial Difficulty ("MBEFD")	Modifications for Borrowers Experiencing Financial Difficulty (“MBEFD”) — A modification of a loan for borrowers experiencing financial difficulty is applicable when the loan modification results in a direct change in the timing or amount of contractual cash flows. The most common modifications provided to borrowers experiencing financial difficulty are expected to occur in the form of principal forgiveness, interest rate reductions, other-than-insignificant-payment delays, or term extensions under ASC 310-10-50-39. Upon Wesbanco's adoption of Accounting Standards Update (“ASU”) 2022-02 on January 1, 2023, Troubled Debt Restructuring ("TDR") accounting was prospectively discontinued and economic concessions for modifications occurring on or after the adoption date are no longer measured. This accounting also results in the elimination of any existing economic concession related to a loan that was previously designated as a TDR if such loan is restructured on or after January 1, 2023. Due to the elimination of economic concessions under ASU 2022-02, the standard may result in modified loans being subject to the new disclosures that would have not been considered concessions and not treated as TDRs. When determining whether a debtor is experiencing financial difficulties, consideration is given to any known default on any of its debt or whether it is probable that the debtor would be in payment default in the foreseeable future without the modification. Other indicators of financial difficulty include whether the debtor has declared or is in the process of declaring bankruptcy, the debtor’s ability to continue as a going concern, or the debtor’s projected cash flow to service its debt (including principal & interest) in accordance with the contractual terms for the foreseeable future, without a modification. If the payment of principal at original maturity is primarily dependent on the value of collateral, the current value of that collateral is considered in determining whether the principal will be paid. The modification of a loan does not increase the allowance or provision for credit losses unless the loan is extended, or the loans are commercial loans that are individually evaluated for impairment, in which case a specific reserve is established pursuant to GAAP. Portfolio segment loss history is the primary factor for establishing the allowance for residential real estate, home equity and consumer MBEFDs. Non-accrual loans that are restructured remain on non-accrual, but may move to accrual status after they have performed according to the restructured terms for a period of time. MBEFDs on accrual status generally remain on accrual as long as they continue to perform in accordance with their modified terms. MBEFDs may also be placed on non-accrual if they do not perform in accordance with the restructured terms. Loans may be removed from MBEFD status after they have performed according to the renegotiated terms for a period of time.
Troubled Debt Restructurings ("TDR")	Troubled Debt Restructurings (prior to the adoption of ASU 2022-02) — A restructuring of a loan constitutes a TDR if the creditor, for economic or legal reasons related to the debtor's financial difficulties, grants a concession to the debtor that it would not otherwise consider. The determination of whether a concession has been granted includes an evaluation of the debtor’s ability to access funds at a market rate for debt with similar risk characteristics and among other things, the significance of the modification relative to unpaid principal or collateral value of the debt, and/or the significance of a delay in the timing of payments relative to the frequency of payments, original maturity date, or the expected duration of the loan. The most common concessions granted generally include one or more modifications to the terms of the debt such as a reduction in the interest rate below the prevailing market rate for the remaining life of the debt, an extension of the maturity date at an interest rate lower than the prevailing market rate for new debt with similar risk, or reduction of the unpaid principal or interest. Additionally, all consumer bankruptcies are considered TDR; all TDRs are considered nonperforming loans. When determining whether a debtor is experiencing financial difficulties, consideration is given to any known default on any of its debt or whether it is probable that the debtor would be in payment default in the foreseeable future without the modification. Other indicators of financial difficulty include whether the debtor has declared or is in the process of declaring bankruptcy, the debtor’s ability to continue as a going concern, or the debtor’s projected cash flow to service its debt (including principal & interest) in accordance with the contractual terms for the foreseeable future, without a modification. If the payment of principal at original maturity is primarily dependent on the value of collateral, the current value of that collateral is considered in determining whether the principal will be paid. The restructuring of a loan does not increase the allowance or provision for credit losses unless the loan is extended or the loans are commercial loans that are individually evaluated for impairment, in which case a specific reserve is established pursuant to GAAP. Portfolio segment loss history is the primary factor for establishing the allowance for residential real estate, home equity and consumer TDRs. Non-accrual loans that are restructured remain on non-accrual, but may move to accrual status after they have performed according to the restructured terms for a period of time. TDRs on accrual status generally remain on accrual as long as they continue to perform in accordance with their modified terms. TDRs may also be placed on non-accrual if they do not perform in accordance with the restructured terms. Loans may be removed from TDR status after they have performed according to the renegotiated terms for a period of time if the interest rate under the modified terms is at or above market, is restructured or refinanced at market or if the loan returns to its original terms.
Acquired Loans	Acquired Loans— Loans acquired in connection with acquisitions are recorded at their acquisition-date fair value and are classified into two categories; purchased financial instruments with more than insignificant credit deterioration (“PCD”) loans, and loans with insignificant credit deterioration (“non-PCD”). PCD loans are defined as a loan or group of loans that have experienced more than insignificant credit deterioration since origination. Non-PCD loans will have an allowance established on acquisition date, which is recognized in the current period provision for credit losses. For PCD loans, an allowance is recognized on day 1 by adding it to the fair value of the loan, which is the “Day 1 amortized cost”. There is no credit loss expense recognized on PCD loans because the initial allowance is established by grossing-up the amortized cost of the PCD loan. Determining the fair value of the acquired loans involves estimating the principal and interest cash flows expected to be collected on the loans and discounting those cash flows at a market rate of interest. Management considers a number of factors in evaluating the acquisition-date fair value including the remaining life of the acquired loans, delinquency status, estimated prepayments, payment options and other loan features, internal risk grade, estimated value of the underlying collateral and interest rate environment. PCD loans are accounted for in accordance with Accounting Standards Codification (“ASC”) 326-20, Financial Instruments – Credit Losses – Measure at Amortized Cost, if, at acquisition, the loan or pool of loans has experienced more-than-insignificant credit deterioration since origination. At acquisition, Wesbanco considers several factors as indicators that an acquired loan or pool of loans has experienced more-than-insignificant credit deterioration. These factors include, but are not limited to, loans 30 days or more past due, loans with an internal risk grade of below average or lower, loans classified as non-accrual by the acquired institution, the materiality of the credit and loans that have been previously modified in a troubled debt restructuring. Under ASC 326-20, a group of loans with similar risk characteristics can be assessed to determine if the pool of loans is PCD. However, if a loan does not have similar risk characteristics as any other acquired loan, the loan is individually assessed to determine if it is PCD. In addition, the initial allowance related to acquired loans can be estimated for a pool of loans if the loans have similar risk characteristics. Even if the loans were individually assessed to determine if they were PCD, they can be grouped together in the initial allowance calculation if they share similar risk characteristics. Since Wesbanco uses the discounted cash flow (DCF) approach, the initial allowance calculation for PCD loans is calculated as the expected contractual cash shortfalls, discounted at the rate that equals the net present value of estimated future cash flows expected to be collected with the purchase price of the loan(s). If a PCD loan has an unfunded commitment at acquisition, the initial allowance for credit losses calculation reflects only the expected credit losses associated with the funded portion of the PCD loan. Expected credit losses associated with the unfunded commitment are included in the initial measurement of the commitment. For PCD loans, the non-credit discount or premium is allocated to individual loans as determined by the difference between the loan’s amortized cost basis and the unpaid principal balance. The non-credit premium or discount is recognized into interest income on a level yield basis over the remaining expected life of the loan. For non-PCD loans, the interest and credit discount or premium is allocated to individual loans as determined by the difference between the loan’s amortized cost basis and the unpaid principal balance. The premium or discount is recognized into interest income on a level yield basis over the remaining expected life of the loan.
Allowance for Credit Losses	Allowance for Credit Losses— The allowance for credit losses specific to loans reduces the loan portfolio to the net amount expected to be collected, representing the lifetime expected losses at the initial origination date. Similarly, an allowance for unfunded loan commitments, which is recorded in other liabilities, represents expected losses on unfunded commitments. Fluctuations in the allowance for credit losses specific to loans, the allowance for unfunded loan commitments, and the allowance for held-to-maturity debt securities are recognized in the provision for credit losses on the consolidated statement of operations. The allowance incorporates forward-looking information and applies a reversion methodology beyond the reasonable and supportable forecast. The allowance is increased by a provision charged to operating expense and reduced by charge-offs, net of recoveries. Management evaluates the appropriateness of the allowance at least quarterly. This evaluation is inherently subjective as it requires material estimates that may be susceptible to significant change from period to period. The allowance for credit loss calculation specific to loans is based on the loan’s amortized cost basis, which is comprised of the unpaid principal balance of the loan, deferred loan fees (costs) and acquired premium (discount) minus any write-downs. Wesbanco made an accounting policy election to exclude accrued interest from the measurement of the allowance for credit losses because the Company has a policy in place to reverse or write-off accrued interest when a loan is placed on non-accrual, and also Wesbanco made an accounting policy election to reverse accrued interest deemed uncollectible as a reversal of interest income. However, Wesbanco is reserving, as part of the allowance for credit losses, for accrued interest on loan modifications under the CARES Act due to the nature and timing of these deferrals. The allowance for credit losses reflects the risk of loss on the loan portfolio. To appropriately measure expected credit losses, management disaggregates the loan portfolio into pools of similar risk characteristics. The Company utilizes the probability of default (“PD”) / loss given default (“LGD”) approach to calculate the expected loss for each segment, which is then discounted to net present value. PD is the probability the asset will default within a given timeframe and LGD is the percentage of the assets not expected to be collected due to default. The primary macroeconomic drivers of the quantitative model include forecasts of national unemployment and interest rate spreads. Management relies on macroeconomic forecasts obtained from various reputable sources, which may include the Federal Open Market Committee (FOMC) forecast and other publicly available forecasts from well recognized, leading economists. These forecasts can range from one to two years, depending upon the facts and circumstances of the current state of the economy, portfolio segment and management’s judgment of what can be reasonably supported. The model reversion period can range from immediate to three years. The allowance for credit losses is calculated over the loan’s contractual life. For term loans, the contractual life is calculated based on the maturity date. For commercial and industrial (“C&I”) revolving loans with no stated maturity date, the contractual life is calculated based on the internal review date. For all other revolving loans, the contractual life is based on either the estimated maturity date or a default date. The contractual term does not include expected extensions, renewals or modifications. The loan portfolio is segmented based on the risk profiles of the loans. Commercial loans are segmented between commercial real estate (“CRE”), which are collateralized by real estate, and C&I, which are typically utilized for general business purposes. CRE is further segmented between land and construction (“LCD”) and improved property, which are generally loans to purchase or refinance owner occupied or non-owner occupied investment properties. LCD loans have a unique risk that the developer or builder may not complete the project or not complete it on time or within budget. Improved property loans are reviewed for risk based on the underlying real estate property such as rental or owner income, appraisal value and other current lease terms, which affect debt service coverage and loan to value. Retail loans are a homogenous group, generally consisting of standardized products that are smaller in amount and distributed over a large number of individual borrowers. The group is segmented into three categories – residential real estate, HELOC and consumer. Contractual terms are adjusted for estimated prepayments to arrive at expected cash flows. Wesbanco models term loans with an annualized “prepayment” rate. When Wesbanco has a specific expectation of differing payment behavior for a given loan, the loan may be evaluated individually. For revolving loans that do not have a principal payment schedule, a curtailment rate is factored into the cash flow. The evaluation also considers qualitative factors such as economic trends and conditions, which includes levels of regional unemployment, real estate values and the impact on specific industries and geographical markets, changes in lending policies and underwriting standards, delinquency and other credit quality trends, concentrations of credit risk, if any, the results of internal loan reviews and examinations by bank regulatory agencies pertaining to the allowance for credit losses. Management relies on observable data from internal and external sources to the extent it is available to evaluate each of these factors and adjusts the model’s quantitative results to reflect the impact these factors may have on probable losses in the portfolio. Commercial loans, including CRE and C&I that have unique characteristics, are tested individually for estimated credit losses. Specific reserves are established when appropriate for such loans based on the net present value of expected future cash flows of the loan or the estimated realizable value of the collateral, if any. The present value of expected future cash flows are discounted at the loan’s effective interest rate. The effective interest rate on a loan is the rate of return implicit in the loan, the loan’s observable market price, or the fair value of the collateral discounted by the estimated selling expenses, if the loan is collateral dependent. Wesbanco chooses the appropriate measurement method on a loan by loan basis for an individually evaluated loan, except for collateral dependent loans for which foreclosure of the collateral is probable. A loan is collateral dependent if repayment of the loan is to be provided solely by the underlying collateral. If the Bank determines that foreclosure of the collateral is probable, ASC 326-20 requires that the expected credit loss be based on the difference between the current fair value of the collateral and the amortized cost basis of the financial asset. At this point, the loan would either be charged down or adequately reserved. Management may also adjust its assumptions to account for differences between expected and actual losses from period to period. The variability of management’s assumptions could alter the level of the allowance for credit losses and may have a material impact on future results of operations and financial condition. The loss estimation models and methods used to determine the allowance for credit losses are continually refined and enhanced.
Premises and Equipment	Premises and Equipment— Premises and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is computed using the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized over the shorter of the estimated economic useful lives of the leased assets or the remaining terms of the underlying leases. Useful lives range from 3 to 10 years for furniture and equipment, 15 to 39 years for buildings and building improvements, and 15 years for land improvements. Maintenance and repairs are expensed as incurred while major improvements that extend the useful life of an asset are capitalized and depreciated over the estimated remaining useful life of the asset. Operating leases are recorded as a right of use (“ROU”) asset and operating lease liability, included in premises and equipment, net and other liabilities, respectively. Operating lease ROU assets represent the right to use an underlying asset during the lease term and operating lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and operating lease liabilities are recognized at lease commencement based on the present value of the remaining lease payments using a discount rate that represents our incremental borrowing rate at the lease commencement date. Operating lease expense, which is comprised of amortization of the ROU asset and the implicit interest accreted on the operating lease liability, is recognized on a straight-line basis over the lease term, and is recorded primarily in net occupancy expense in the consolidated statements of income.
Other Real Estate Owned and Repossessed Assets	Other Real Estate Owned and Repossessed Assets— Other real estate owned and repossessed assets, which are considered available-for-sale and are reported in other assets, are carried at the lower of cost or their estimated current fair value, less estimated costs to sell. Other real estate owned consists primarily of properties acquired through, or in lieu of, foreclosure. Repossessed collateral primarily consists of automobiles and other types of collateral acquired to satisfy defaulted consumer loans. Subsequent declines in fair value, if any, income and expense associated with the management of the collateral, and gains or losses on the disposition of these assets are recognized in the Consolidated Statements of Income in non-interest income. Refer to Note 13, “Revenue Recognition” for further detail.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets— Wesbanco accounts for business combinations using the acquisition method of accounting. Accordingly, the identifiable assets acquired, the liabilities assumed, and any non-controlling interest of an acquired business are recorded at their estimated fair values as of the date of acquisition with any excess of the cost of the acquisition over the fair value recorded as goodwill. Other intangible assets represent purchased assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or because the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset, or liability. Goodwill is not amortized but is evaluated for impairment annually, or more often if events or circumstances indicate it may be impaired. Finite-lived intangible assets, which consist primarily of core deposit and customer list intangibles (long-term customer-relationship intangible assets) are amortized using straight-line and accelerated methods over their weighted-average estimated useful lives, ranging from ten to sixteen years in total, and are tested for impairment whenever events or circumstances indicate that their carrying amount may not be recoverable. Non-compete agreements are recognized in other assets on the balance sheet and are amortized on a straight-line basis over the life of the respective agreements, ranging from one to four years. Goodwill is evaluated for impairment by either assessing qualitative factors to determine whether it is necessary to perform the goodwill impairment test, or Wesbanco may elect to perform a quantitative goodwill impairment test. Under the qualitative assessment, Wesbanco assesses qualitative factors to determine whether it is more likely than not that the fair value of its reporting units are less than their carrying amounts, including goodwill. If it is more likely than not, the goodwill impairment test is used to identify potential goodwill impairment and measure the amount of a goodwill impairment loss to be recognized, if any. The estimated fair value of each reporting unit is compared to its carrying value, including goodwill. If the estimated fair value of a reporting unit exceeds its carrying amount, the goodwill of that reporting unit is not considered impaired, and no impairment loss is recognized. However, if the carrying amount of the reporting unit exceeds its fair value, an impairment loss is recognized based on the excess of a reporting unit’s carrying value over its fair value. Intangible assets with finite useful lives are evaluated for impairment whenever events or changes in circumstances indicate that their carrying amount may not be recoverable. An impairment loss is recognized when the carrying amount of an intangible asset with a finite useful life is not recoverable from its undiscounted cash flows and is measured as the difference between the carrying amount and the fair value of the asset. Wesbanco does not have any indefinite-lived intangible assets.
Bank-Owned Life Insurance	Bank-Owned Life Insurance— Wesbanco has purchased life insurance policies on certain executive and other officers. Wesbanco receives the cash surrender value of each policy upon its termination or benefits are payable upon the death of the insured. These policies are recorded in the Consolidated Balance Sheets at their net cash surrender value. Changes in net cash surrender value are recognized in non-interest income in the Consolidated Statements of Income. Adjustments to cash surrender value and death benefits received, if recognized as income, are currently tax-exempt.
Interest Rate Lock Commitments	Interest Rate Lock Commitments— In order to attract potential home borrowers, Wesbanco offers interest rate lock commitments (“IRLC”) to such potential borrowers. IRLC are generally for sixty days and guarantee a specified interest rate for a loan if underwriting standards are met, but the commitment does not obligate the potential borrower to close on the loan. Accordingly, some IRLC expire prior to the funding of the related loan. For IRLC issued in connection with potential loans intended for sale, which consist primarily of originated longer-term fixed rate residential home mortgage loans that qualify for secondary market sale, the Bank enters into positions of forward month mortgage-backed securities to be announced (“TBA”) contracts on a mandatory basis or on a one-to-one forward sales contract on a best efforts basis. A mortgage loan sold on a mandatory basis to the secondary market is considered sold when the mortgage loan is funded. Wesbanco enters into TBA contracts in order to control interest rate risk during the period between the IRLC and the sale of the mortgage loan. The IRLC is executed between the mortgagee and Wesbanco, and the forward TBA contract is executed between Wesbanco and a counterparty. Both the IRLC and the forward TBA contract are considered derivatives. A mortgage loan sold on a best efforts basis is locked into a forward sales contract on the same day as the IRLC to control interest rate risk during the period between the IRLC and the sale of the mortgage loan. The IRLC is executed between the mortgagee and Wesbanco, and the forward sales contract is executed between Wesbanco and a counterparty. Both the IRLC and the forward sales contract are considered derivatives. Both types of derivatives are recorded at fair value and are not designated in a qualified hedged accounting program. The changes in fair value are recorded in current earnings within mortgage banking income in the Consolidated Statements of Income. The fair value of IRLC is the gain or loss that would be realized on the underlying loans assuming exercise of the commitments under current market rates versus the rate incorporated in the commitments, taking into consideration loans cancelled prior to closing. The fair value of forward sales contracts is based on quoted market prices. Since loans typically close before receipt of funding from an investor, they are accounted for at fair value as “Loans Held for Sale” in the Consolidated Balance Sheets.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities— Wesbanco records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether Wesbanco has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Wesbanco enters into back-to-back interest rate swaps and caps with commercial banking customers and then with counterparties for the offsetting interest rate swap or cap. Currently, none of Wesbanco’s derivatives are designated in qualifying hedging relationships, as the derivatives are not used to manage risks within Wesbanco’s assets or liabilities. As such, all changes in fair value of Wesbanco’s derivatives are recognized directly in earnings.
Income Taxes	Income Taxes— The provision for income taxes included in the Consolidated Statements of Income includes both federal and state income taxes and is based on income in the financial statements, rather than amounts reported on Wesbanco’s income tax returns. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases at which rates they are expected to turnaround. A test of the anticipated realizability of deferred tax assets is performed at least annually.
Fair Value	Fair Value— Fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. Fair value measurements are not adjusted for transaction costs. The ASC also establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). The three levels of the fair value hierarchy are described below: Level 1—Quoted prices in active markets for the same security that are accessible at the measurement date for identical, unrestricted assets or liabilities; Level 2—Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, or model-based valuation techniques where all significant assumptions are observable, either directly or indirectly, in the market; Level 3—Valuation is generated from model-based techniques where one or more significant assumptions are not observable, either directly or indirectly, in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques may include use of discounted cash flow models and similar techniques. A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.
Earnings Per Common Share	Earnings Per Common Share— Basic earnings per common share (“EPS”) is calculated by dividing net income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period. For diluted EPS, the weighted-average number of shares for the period is increased by the number of shares, which would be issued assuming the exercise of in-the-money common stock options and any outstanding warrants. Time-based restricted stock shares are recorded as issued and outstanding upon their grant, rather than upon vesting, and therefore are included in the weighted-average shares outstanding due to voting rights granted at the time restricted stock is granted. Performance and market-based restricted stock shares are recorded as issued and outstanding upon their achieving the required performance or market factors. These restricted shares are included in the number of shares outstanding for diluted EPS if their performance or market factors are expected to be achieved as of the reporting date.
Trust Assets	Trust Assets— Assets held by the Bank in fiduciary or agency capacities for its customers are not included as assets in the Consolidated Balance Sheets. Certain money market trust assets are held on deposit at the Bank and are accounted for as such.
Stock-Based Compensation	Stock-Based Compensation— Stock-based compensation awards granted, comprised of stock options, performance and time-based restricted stock, and total shareholder return (“TSR”) awards are valued at fair value and compensation cost is recognized on a straight-line basis over the requisite service or performance period of each award. For service-based awards with graded vesting schedules, compensation expense is divided among the vesting periods with each separately vested portion of the award recognized in compensation expense on a straight-line basis over the requisite service period. For performance-based awards and TSR awards, compensation expense is recognized evenly over the performance period, based on the probability of the achievements of the performance or market conditions set forth in the plans. Upon adoption of Accounting Standards Update (“ASU”) 2016-09, “Compensation-Stock Compensation (Topic 718)”, Wesbanco recognizes forfeitures as they occur rather than estimating them over the life of the award.
Defined Benefit Pension Plan	Defined Benefit Pension Plan— Wesbanco recognizes in the statement of financial position an asset for the plan’s overfunded status or a liability for the plan’s underfunded status. Wesbanco recognizes fluctuations in the funded status in the year in which the changes occur through other comprehensive income. Plan assets are determined based on fair value generally representing observable market prices. The projected benefit obligation is determined based on the present value of projected benefit distributions at an assumed discount rate. The discount rate utilized is based on a fitted yield curve approach whereby the yield curve compares the expected stream of future benefit payments for the plan to high quality corporate bonds available in the marketplace to determine an equivalent discount rate. Periodic pension expense includes service costs, interest costs based on an assumed discount rate, an expected return on plan assets based on an actuarially-derived market-related value, an assumed rate of annual compensation increase, and amortization or accretion of actuarial gains and losses as well as other actuarial assumptions. The service cost component is recognized in salaries and wages and the remaining costs are recognized in employee benefits within the Company’s Consolidated Statement of Income. Wesbanco utilizes a full yield curve approach in the estimation of service and interest components by applying the specific spot rates along the yield curve used in the determination of the benefit obligation to the relevant projected cash flows. The plan has been closed to new entrants since August 2007; however, benefits are still earned for those plan participants with continuing employment after August 2007. Refer to Note 12, “Employee Benefit Plans” for further detail.
Post-retirement Medical Benefit Plan	Post-retirement Medical Benefit Plan— Wesbanco acquired a non-qualified supplemental retirement plan for certain key employees from Farmers Capital Bank Corp. (“FFKT”). The Plan provides lifetime medical and dental benefits upon retirement for certain employees meeting the eligibility requirement, which were amended by Wesbanco upon acquisition. Wesbanco recognizes a liability for the projected benefit obligation in the Consolidated Balance Sheets in other liabilities as this plan is unfunded until period payments are made. Wesbanco recognizes fluctuations in the projected benefit obligation through other comprehensive income. The projected benefit obligation is based on the present value of projected medical and dental obligations at an assumed discount rate. Periodic benefit expense includes service cost, interest cost based on an assumed discount rate, and amortization or accretion of actuarial gains and losses, as well as other actuarial assumptions. Refer to Note 12, “Employee Benefit Plans” for further detail.
Recent accounting pronouncements	Recent accounting pronouncements—The Financial Accounting Standards Board (“FASB”) issued Accounting Standards Updates (“ASU”) as noted below. ASU 2023-09 – Income Taxes (Topic 740): Improvements to Income Tax Disclosures In December 2023, the FASB issued ASU 2023-09, "Income Taxes (Topic 740)." The amendments in this Update related to the rate reconciliation and income taxes paid disclosures and are designed to improve the transparency of income tax disclosures by requiring (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) income taxes paid disaggregated by jurisdiction. For Wesbanco, the amendments are effective for annual periods beginning after December 15, 2024. Early adoption is permitted for annual financial statements that have not yet been issued or made available for issuance. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements. ASU 2023-08 – Intangibles-Goodwill and Other Crypto Assets (Subtopic 350-60): Accounting for and Disclosure of a Crypto Asset In December 2023, the FASB issued ASU 2023-08, "Intangibles-Goodwill and Other Crypto Assets (Subtopic 350-60)." The amendments in this Update require that an entity measure crypto assets at fair value in the statement of financial position each reporting period and recognize changes from remeasurement in net income. The amendments also require that an entity provide enhanced disclosures for both annual and interim reporting periods to provide investors with relevant information to analyze and assess the exposure and risk of significant individual crypto asset holdings. In addition, fair value measurement aligns the accounting required for holders of crypto assets with the accounting for entities that are subject to certain industry-specific guidance (such as investment companies) and eliminates the requirement to test those assets for impairment, thereby reducing the associated cost and complexity of applying the current guidance. For Wesbanco, the amendments are effective beginning after December 15, 2024, including interim periods within those fiscal years. Early adoption is permitted. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements, as Wesbanco holds no crypto assets. ASU 2023-07—Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures In November 2023, the FASB issued ASU 2023-07, “Improvements to Reportable Segment Disclosures (Topic 280).” The amendments in this Update improve financial reporting by requiring disclosure of incremental segment information on an annual and interim basis for all public entities to enable investors to develop more decision-useful financial analyses. The amendments in this Update do not change how a public entity identifies its operating segments, aggregates those operating segments, or applies the quantitative thresholds to determine its reportable segments. For Wesbanco, the amendments are effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements. ASU 2023-06 - Disclosure Improvements: Codification Amendments in Response to the SEC’s Disclosure Update and Simplification Initiative In October 2023, the FASB issued ASU 2023-06, "Disclosure Improvements." For entities subject to the SEC’s existing disclosure requirements and for entities required to file or furnish financial statements with or to the SEC in preparation for the sale of or for purposes of issuing securities that are not subject to contractual restrictions on transfer, the effective date for each amendment will be the date on which the SEC’s removal of that related disclosure from Regulation S-X or Regulation S-K becomes effective. If by June 30, 2027, the SEC has not removed the applicable requirement from Regulation S-X or Regulation S-K, the pending content of the related amendment will be removed from the Codification and will not become effective for any entity. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements. ASU 2023-05 – Business Combinations—Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement In August 2023, the FASB issued ASU 2023-05, "Business Combinations - Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement," under which an entity that qualifies as either a joint venture or a corporate joint venture as defined in the FASB Accounting Standards Codification ("ASC") master glossary is required to apply a new basis of accounting upon the formation of the joint venture. Specifically, the ASU provides that a joint venture or a corporate joint venture (collectively, “joint ventures”) must initially measure its assets and liabilities at fair value on the formation date. For Wesbanco, the amendments are effective for all joint ventures within the ASU’s scope that are formed on or after January 1, 2025. Early adoption is permitted in any annual or interim period as of the beginning of the related fiscal year. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements. ASU 2023-04 - Liabilities (Topic 405): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 121 (SEC Update) In August 2023, the FASB issued ASU 2023-04, "Liabilities (Topic 405): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No.121." ASU 2023-04 adds various SEC paragraphs to the Codification to reflect guidance included in SEC Staff Accounting Bulletin No. 121 on safeguarding crypto assets. As of December 31, 2023, this ASU does not apply to Wesbanco as Wesbanco does not safeguard crypto assets. ASU 2023-03 - Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 120 In July 2023, FASB issued ASU 2023-03, which amends or supersedes various SEC paragraphs within the Codification to conform to past SEC announcements and guidance issued by the SEC. The ASU does not provide any new guidance. Therefore, there is no transition or effective date associated with this update. ASU 2023-02 – Investments Equity Method and Joint Ventures (Topic 323) In March 2023, the FASB issued ASU 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. ASU 2023-02 allows reporting entities to elect to account for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. The ASU’s amendments “remove the specialized guidance for [low-income-housing tax credit] investments that are not accounted for using the proportional amortization method and instead require that those LIHTC investments be accounted for using the guidance in other [GAAP].” For Wesbanco, this update was effective on January 1, 2024. The adoption of this pronouncement did not have a material impact on the Consolidated Financial Statements. ASU 2023-01 - Leases (Topic 842): Common Control Arrangements In March 2023, the FASB issued ASU 2023-01, Leases (Topic 842): Common Control Arrangements. ASU 2023-01 amends certain provisions of ASC 842 that apply to arrangements between related parties under common control. Additionally, ASU 2023-01 amends the accounting for leasehold improvements in common-control arrangements for all entities. For Wesbanco, this update was effective on January 1, 2024. The adoption of this pronouncement did not have a material impact on the Consolidated Financial Statements. ASU 2022-04 - Liabilities – Supplier Finance Programs (Sub-topic 405-50) In September 2022, the FASB issued ASU 2022-04, “Liabilities—Supplier Finance Programs (Subtopic 405-50).” The amendments in this ASU require that a buyer in a supplier finance program disclose sufficient information about the program to allow a user of financial statements to understand the program’s nature, activity during the period, changes from period to period, and potential magnitude. To achieve that objective, the buyer should disclose qualitative and quantitative information about its supplier finance programs. For Wesbanco, this update was effective on January 1, 2023, except for the amendment on rollforward information, which was effective on January 1, 2024. The adoption of this full pronouncement did not have a material impact on the Consolidated Financial Statements. ASU 2022-03 - Fair Value Measurement (Topic 820) In June 2022, the FASB issued ASU 2022-03, "Fair Value Measurement (Topic 820).” The amendments in this ASU clarify that a 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. Furthermore, the amendments to this ASU clarify that an entity cannot, as a separate unit of account, recognize and measure a contractual sale restriction. The update to this ASU requires the following disclosures for equity securities: (1) the fair value of equity securities subject to contractual sale restrictions reflected in the balance sheet; (2) the nature and remaining duration of the restriction(s) and; (3) the circumstances that could cause a lapse in the restriction(s). For Wesbanco, this update was effective on January 1, 2024. The adoption of this pronouncement did not have a material impact on the Consolidated Financial Statements. ASU 2022-02 - Financial Instruments - Credit Losses (Topic 326) In March 2022, the FASB issued ASU 2022-02, "Financial Instruments - Credit Losses (Topic 326)." The amendments in this ASU eliminate the accounting guidance for TDRs by creditors in Subtopic 310-40, "Receivables - Troubled Debt Restructurings by Creditors," while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty. Specifically, rather than applying the recognition and measurement guidance for TDRs, an entity must apply the loan refinancing and restructuring guidance in paragraphs 310-20-35-9 through 35-11 to determine whether a modification results in a new loan or a continuation of an existing loan. In addition, for public business entities, the amendments in this Update require that an entity disclose current-period gross writeoffs by year of origination for financing receivables and net investments in leases within the scope of Subtopic 326-20, "Financial Instruments - Credit Losses - Measured at Amortized Cost." For Wesbanco, this update was effective beginning on January 1, 2023. The adoption of this pronouncement did not have a material impact on the Consolidated Financial Statements. For the additional disclosure requirements in this ASU, please refer to the MBEFD policy above and Note 4, "Loans and the Allowance for Credit Losses." ASU 2020-04, ASU 2021-01 and ASU 2022-06 - Reference Rate Reform (Topic 848) In March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform (Topic 848).” This ASU provided temporary, optional guidance to ease the potential burden in accounting for, or recognizing the effects of, the transition away from the London Interbank Offered Rate ("LIBOR") or other reference rate expected to be discontinued on financial reporting. The ASU also provides optional expedients for contract modifications that replace a reference rate affected by reference rate reform. The guidance is effective as of March 12, 2020 through December 31, 2022, and can be adopted at any time during this period. In January 2021, the FASB issued ASU 2021-01, “Reference Rate Reform (Topic 848): Scope.” This ASU refines the scope of Topic 848 and addresses questions about whether Topic 848 can be applied to derivative instruments that do not reference a rate that is expected to be discontinued, but that use an interest rate for margining, discounting or contract price alignment that is expected to be modified as a result of reference rate reform. ASU 2021-01 is effective upon issuance through December 31, 2024, and can be adopted at any time during this period. Wesbanco has not offered LIBOR for any new contracts after December 31, 2021. Wesbanco has chosen the One Month Term Secured Overnight Financing Rate ("1M Term SOFR") as its alternative replacement rate for LIBOR on both back-to-back swaps and on one-month variable loans. A transition plan was implemented in 2021 to identify and modify Wesbanco's loans and other financial instruments with attributes that are either directly or indirectly influenced by LIBOR. In December 2022, the FASB issued ASU 2022-06, “Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848.” In the Update, the Board decided to defer the sunset date of Topic 848 to December 31, 2024, to permit entities to apply the guidance in Topic 848 through the expected cessation date of USD LIBOR. In the Board’s view, that time frame would have been sufficient to provide flexibility for additional unforeseen changes to the timeline of USD LIBOR cessation and to accommodate global interbank offered rate (IBOR) transition. The update did not have a material impact on Wesbanco’s Consolidated Financial Statements. At December 31, 2023, Wesbanco has completed its transition away from LIBOR.

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2023

Nature of Operations— Wesbanco, Inc. (“Wesbanco” or the “Company”) is a bank holding company offering a full range of financial services, including trust and investment services, mortgage banking, insurance and brokerage services. Wesbanco’s defined business segments are community banking and trust and investment services. As of December 31, 2023, Wesbanco’s banking subsidiary, Wesbanco Bank, Inc. (“Wesbanco Bank” or the “Bank”), headquartered in Wheeling, West Virginia, operates through 192 branches and 183 ATM machines in West Virginia, Ohio, western Pennsylvania, Kentucky, southern Indiana and Maryland. In addition, Wesbanco operates an insurance brokerage company, Wesbanco Insurance Services, Inc., and a full service broker/dealer, Wesbanco Securities, Inc.

Use of Estimates

Use of Estimates— The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Principles of Consolidation

Principles of Consolidation— The Consolidated Financial Statements include the accounts of Wesbanco and those entities in which Wesbanco has a controlling financial interest. All intercompany balances and transactions have been eliminated in consolidation.

Wesbanco determines whether it has a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity. A voting interest entity is an entity in which the total equity investment at risk is sufficient to enable the entity to finance itself independently and provides the equity holders with the obligation to absorb losses, the right to receive residual returns and the right to make financial and operating decisions. Wesbanco consolidates voting interest entities in which it owns all, or at least a majority (generally, greater than 50%) of the voting interest.

Variable interest entities (“VIE”) are entities that in general either do not have equity investors with voting rights or that have equity investors that do not provide sufficient financial resources for the entity to support its activities. Wesbanco uses VIEs in various legal forms to conduct normal business activities. Wesbanco reviews the structure and activities of VIEs for possible consolidation.

A controlling financial interest in a VIE is present when an enterprise has both the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and the obligation to absorb losses of the VIE that could potentially be significant to the VIE or the right to receive benefits of the VIE that could potentially be significant to the VIE. A VIE often holds financial assets, including loans or receivables, real estate or other property. The company with a controlling financial interest, known as the primary beneficiary, is required to consolidate the VIE. Wesbanco has eleven wholly-owned trust subsidiaries (collectively, the “Trusts”), for which it does not have the power to direct the activities of a VIE that most significantly impact the VIE’s economic performance nor the obligation to absorb losses or the right to receive a benefits from the VIE that could be potentially significant to the VIE. Accordingly, the Trusts and their net assets are not included in the Consolidated Financial Statements. However, the junior subordinated deferrable interest debentures issued by Wesbanco to the Trusts (refer to Note 10, “Subordinated Debt and Junior Subordinated Debt”) and the common stock issued by the Trusts is included in the Consolidated Balance Sheets. Wesbanco also owns non-controlling variable interests in certain limited partnerships for which it does not have the power to direct the activities of a VIE that most significantly impact the VIE’s economic performance nor the obligation to absorb losses or the right to receive a benefit from the VIE that could be potentially significant to the VIE. These VIEs are not consolidated into Wesbanco’s financial statements because Wesbanco is not considered the primary beneficiary. These investments are accounted for using the equity method of accounting and are included in other assets in the Consolidated Balance Sheets. Refer to Note 7, “Investments in Limited Partnerships” for further detail.

Business Combinations

Business Combinations— Business combinations are accounted for by applying the acquisition method. As of acquisition date, the identifiable assets acquired and liabilities assumed are measured at fair value and recognized separately from goodwill. Results of operations of the acquired entities are included in the consolidated statement of income from the date of acquisition.

Revenue Recognition

Revenue Recognition— Interest income, net securities gains (losses) and bank-owned life insurance are not in scope of ASC 606, Revenue from Contracts with Customers. For the revenue streams in scope of ASC 606, which include trust fees, service charges on deposits, net securities brokerage revenue, debit card sponsorship income, payment processing fees, electronic banking fees, net swap fee and valuation income, mortgage banking income and net gain or loss on sale of other real estate owned and other assets, there are no significant judgments related to the amount and timing of revenue recognition.

Trust fees: Fees are earned over a period of time between monthly and annually, per the related fee schedule. The fees are earned ratably over the period for investment, safekeeping and other services performed by Wesbanco. The fees are accrued when earned based on the daily asset value on the last day of the quarter. In most cases, the fees are directly debited from the customer account. WesMark fees consist of investment advisory fees and shareholder service fees and are paid to Wesbanco by the WesMark mutual funds on a monthly basis for Wesbanco’s involvement with the management of the funds.

Service charges on deposits: There are monthly service charges for both commercial and personal banking customers, which are earned over the month per the related fee schedule based on the customers’ deposits. There are also transaction-based fees, which are earned based on specific transactions or customer activity within the customers’ deposit accounts. These are earned at the time the transaction or customer activity occurs. The fees are debited from the customer account.

Net securities brokerage revenue: Commission income is earned based on customer transactions and management of investments. The commission income from customers’ transactions is recognized when the transaction is complete and approved. Annuity commissions are earned based upon the carrier’s commission rate for the annuity product chosen by the investing customer. The commission income from the management of investments over time is earned continuously over a quarterly period.

Payment processing fees: Payment processing fees are earned from the bill payment and electronic funds transfer (“EFT”) services provided under the name FirstNet. The fees are derived from both the individual consumer banking transactions and from businesses or service providers through monthly billing for total transactions occurring. These fees are earned at the time the transaction or customer activity occurs. The fees are debited from the customers’ deposit accounts or charged directly to the business or service provider. Payment processing fees are recorded within other non-interest income on the Consolidated Statements of Income.

Electronic banking fees: Interchange and ATM fees are earned based on customer and ATM transactions. Revenue is recognized when the transaction is settled.

Net swap fee and valuation income: Fee income is earned when Wesbanco executes interest rate swaps and caps with its commercial banking customers. These swaps and caps are economically hedged by offsetting interest rate swaps and caps that Wesbanco executes with a third party, generating the fee income. The fee income is recognized when the swap or cap transaction is complete and approved by all parties.

Mortgage banking income: Income is earned when Wesbanco-originated loans are sold to an investor on the secondary market. The investor bids on the loans. If the price is accepted, Wesbanco delivers the loan documents to the investor. Once received and approved by the investor, revenue is recognized and the loans are derecognized from the Consolidated Balance Sheet. Prior to the loans being sold, they are classified as loans held for sale. Additionally, the changes in the fair value of the loans held for sale, loan commitments and related derivatives are included in mortgage banking income and are somewhat offset by any deferred direct origination costs, such as mortgage loan officer commissions.

Net gain or loss on sale of other real estate owned and other assets: Net gain or loss on other real estate owned is recorded when the property is sold to a third party and the Bank collects substantially all of the consideration to which it is entitled in exchange for the transfer of the property. Net gain or loss on other assets can include, among other things, the sale of fixed assets, the change in fair value of the underlying investments funded by Wesbanco’s Community Development Corporation (“Wesbanco CDC”) and residual income earned from the sale of Wesbanco’s debit card sponsorship program. Gains or losses are recognized upon receipt of consideration and subsequent transfer of the property for fixed asset sales. The change in fair value of Wesbanco CDC investments occurs upon the change in the underlying investments as these are accounted for utilizing the equity method, and as such, are not within the scope of ASC 606. Residual income from the sale of the debit card sponsorship program is recognized over time as per the signed agreement between Wesbanco and the buyer.

Cash and Cash Equivalents

Cash and Cash Equivalents— Cash and cash equivalents include cash and due from banks, due from banks – interest bearing and federal funds sold. Generally, federal funds are sold for one-day periods.

Securities

Securities— Equity securities: Equity securities, which include investments in various mutual funds held in grantor trusts formed in connection with the Company’s deferred compensation plan, are reported at fair value with the gains and losses included in non-interest income.

Available-for-sale debt securities: Debt securities not classified as held-to-maturity are classified as available-for-sale. These securities may be sold at any time based upon management’s assessment of changes in economic or financial market conditions, interest rate or prepayment risks, liquidity considerations and other factors. These securities are stated at fair value, with the fair value adjustment, net of tax, reported as a separate component of accumulated other comprehensive income.

Held-to-maturity debt securities: Securities that are purchased with the positive intent and ability to be held until their maturity are stated at cost and adjusted for amortization of premiums and accretion of discounts. Transfers of debt securities into the held-to-maturity category from the available-for-sale category are made at fair value at the date of transfer. The unrealized gain or loss at the date of transfer is retained in other comprehensive income and in the carrying value of the held-to-maturity securities. Such amounts are amortized over the remaining life of the security. Certain securities with less than 15% of their original purchase price remaining or that have experienced measurable credit deterioration may be sold.

Cost method investments: Securities that do not have readily determinable fair values and for which Wesbanco does not exercise significant influence are carried at cost. Cost method investments consist primarily of Federal Home Loan Bank (“FHLB”) stock and are included in other assets in the Consolidated Balance Sheets. Cost method investments are evaluated for impairment whenever events or circumstances suggest that their carrying value may not be recoverable.

Securities acquired in acquisitions are recorded at fair value with the premium or discount derived from the fair market value adjustment recognized into interest income on a level yield basis over the remaining life of the security.

Gains and losses: Net realized gains and losses on sales of securities are included in non-interest income. The cost of securities sold is based on the specific identification method. The gain or loss is determined as of the trade date. Unrealized gains and losses on available-for-sale securities are recorded through other comprehensive income.

Amortization and accretion: Generally, premiums are amortized to call date and discounts are accreted to maturity, on a level yield basis.

Current expected credit losses (“CECL”): The corporate and municipal bonds in Wesbanco’s held-to-maturity debt portfolio are analyzed quarterly for CECL. Wesbanco uses a database of historical financials of all corporate and municipal issuers and actual historic default and recovery rates on rated and non-rated transactions to estimate CECL on an individual security basis. The CECL calculated amount is adjusted quarterly and is recorded in an allowance for expected credit losses on the balance sheet that is deducted from the amortized cost basis of the held-to-maturity portfolio as a contra asset, with the losses recorded on the income statement within the provision for credit losses. Because Wesbanco’s held-to-maturity investments in mortgage-backed securities and collateralized mortgage obligations are all either issued by a direct governmental entity or a government-sponsored entity, there is no historical evidence supporting the establishment of a CECL reserve; therefore, Wesbanco has estimated these losses at zero, and will monitor this assumption in the future for any economical or governmental policies that could affect this assumption.

Available-for-sale debt security impairment: An available-for-sale debt security is considered impaired if its fair value is less than its amortized cost basis. If Wesbanco intends to sell or will be required to sell the investment prior to recovery of cost, the entire impairment will be recognized immediately in the Consolidated Statements of Income. If Wesbanco does not intend to sell, nor is it more likely than not that it will be required to sell impaired securities prior to the recovery of their cost, a review is conducted each quarter to determine if any portion of the impairment is due to credit losses. In estimating credit losses, Wesbanco first considers the financial condition and near-term prospects of the issuer, evaluating any credit downgrades or other indicators of a potential credit problem, the type of security, either fixed or equity, and the receipt of principal and interest according to the contractual terms. If there are no indications that the impairment is credit-related, the impairment is recognized in other comprehensive income in the Consolidated Balance Sheet. If the impairment is considered to be credit-related based on management’s review of the various factors that indicate credit impairment, the amount of credit impairment is calculated using the present value of future expected cash flows. If the present value of future expected cash flows is less than the amortized cost basis of the security, a credit loss exists and an allowance for expected credit losses is recorded, limited by the total unrealized loss on the security, and is recognized in the Consolidated Statements of Income. The non-credit portion is calculated as the difference between the total unrealized loss and the credit portion of that loss and is recognized in other comprehensive income.

Loans and Loans Held for Sale

Loans and Loans Held for Sale — Loans originated by Wesbanco are reported at the principal amount outstanding, net of unearned income including credit valuation adjustments, unamortized deferred loan fee income and loan origination costs. Interest is accrued as earned on loans except where doubt exists as to collectability, in which case accrual of income is discontinued. Loans originated and intended for sale are carried, in aggregate, at fair value. The use of a valuation model using quoted prices of similar instruments are significant observable inputs in arriving at the fair value of loans held for sale.

Loan origination fees and direct costs are deferred and accreted or amortized into interest income, as an adjustment to the yield, over the life of the loan using the level yield method, or an approximation thereof. When a loan is paid off, the remaining unaccreted or unamortized net origination fees or costs are immediately recognized into income.

Loans are generally placed on non-accrual when they are 90 days past due, unless the loan is well-secured and in the process of collection. Loans may be returned to accrual status when a borrower has resumed paying principal and interest for a sustained period of at least six months and Wesbanco is reasonably assured of collecting the remaining contractual principal and interest. Loans are returned to accrual status at an amount equal to the principal balance of the loan at the time of non-accrual status less any payments applied to principal during the non-accrual period.

A loan is considered non-performing, based on current information and events, if it is probable that Wesbanco will be unable to collect the payments of principal and interest when due according to the original contractual terms of the loan agreement. Wesbanco recognizes interest income on non-accrual loans on the cash basis only if recovery of principal is reasonably assured. All non-accrual loans are considered non-performing loans.

Consumer loans are charged down to the net realizable value at 120 days past due for closed-end loans and 180 days past due for open-end revolving lines of credit. Residential real estate loans are charged down to the net realizable value of the collateral at 180 days past due. Commercial loans are charged down to the net realizable value when it is determined that Wesbanco will be unable to collect the principal amount in full. Loans are reclassified to other assets at the net realizable value when foreclosure or repossession of the collateral occurs. Refer to the “Other Real Estate Owned and Repossessed Assets” policy below for additional detail.

Modifications for Borrowers Experiencing Financial Difficulty ("MBEFD")

Modifications for Borrowers Experiencing Financial Difficulty (“MBEFD”) — A modification of a loan for borrowers experiencing financial difficulty is applicable when the loan modification results in a direct change in the timing or amount of contractual cash flows. The most common modifications provided to borrowers experiencing financial difficulty are expected to occur in the form of principal forgiveness, interest rate reductions, other-than-insignificant-payment delays, or term extensions under ASC 310-10-50-39. Upon Wesbanco's adoption of Accounting Standards Update (“ASU”) 2022-02 on January 1, 2023, Troubled Debt Restructuring ("TDR") accounting was prospectively discontinued and economic concessions for modifications occurring on or after the adoption date are no longer measured. This accounting also results in the elimination of any existing economic concession related to a loan that was previously designated as a TDR if such loan is restructured on or after January 1, 2023. Due to the elimination of economic concessions

under ASU 2022-02, the standard may result in modified loans being subject to the new disclosures that would have not been considered concessions and not treated as TDRs.

When determining whether a debtor is experiencing financial difficulties, consideration is given to any known default on any of its debt or whether it is probable that the debtor would be in payment default in the foreseeable future without the modification. Other indicators of financial difficulty include whether the debtor has declared or is in the process of declaring bankruptcy, the debtor’s ability to continue as a going concern, or the debtor’s projected cash flow to service its debt (including principal & interest) in accordance with the contractual terms for the foreseeable future, without a modification. If the payment of principal at original maturity is primarily dependent on the value of collateral, the current value of that collateral is considered in determining whether the principal will be paid.

The modification of a loan does not increase the allowance or provision for credit losses unless the loan is extended, or the loans are commercial loans that are individually evaluated for impairment, in which case a specific reserve is established pursuant to GAAP. Portfolio segment loss history is the primary factor for establishing the allowance for residential real estate, home equity and consumer MBEFDs.

Non-accrual loans that are restructured remain on non-accrual, but may move to accrual status after they have performed according to the restructured terms for a period of time. MBEFDs on accrual status generally remain on accrual as long as they continue to perform in accordance with their modified terms. MBEFDs may also be placed on non-accrual if they do not perform in accordance with the restructured terms. Loans may be removed from MBEFD status after they have performed according to the renegotiated terms for a period of time.

Troubled Debt Restructurings ("TDR")

Troubled Debt Restructurings (prior to the adoption of ASU 2022-02) — A restructuring of a loan constitutes a TDR if the creditor, for economic or legal reasons related to the debtor's financial difficulties, grants a concession to the debtor that it would not otherwise consider. The determination of whether a concession has been granted includes an evaluation of the debtor’s ability to access funds at a market rate for debt with similar risk characteristics and among other things, the significance of the modification relative to unpaid principal or collateral value of the debt, and/or the significance of a delay in the timing of payments relative to the frequency of payments, original maturity date, or the expected duration of the loan. The most common concessions granted generally include one or more modifications to the terms of the debt such as a reduction in the interest rate below the prevailing market rate for the remaining life of the debt, an extension of the maturity date at an interest rate lower than the prevailing market rate for new debt with similar risk, or reduction of the unpaid principal or interest. Additionally, all consumer bankruptcies are considered TDR; all TDRs are considered nonperforming loans.

The restructuring of a loan does not increase the allowance or provision for credit losses unless the loan is extended or the loans are commercial loans that are individually evaluated for impairment, in which case a specific reserve is established pursuant to GAAP. Portfolio segment loss history is the primary factor for establishing the allowance for residential real estate, home equity and consumer TDRs.

Non-accrual loans that are restructured remain on non-accrual, but may move to accrual status after they have performed according to the restructured terms for a period of time. TDRs on accrual status generally remain on accrual as long as they continue to perform in accordance with their modified terms. TDRs may also be placed on non-accrual if they do not perform in accordance with the restructured terms. Loans may be removed from TDR status after they have performed according to the renegotiated terms for a period of time if the interest rate under the modified terms is at or above market, is restructured or refinanced at market or if the loan returns to its original terms.

Acquired Loans

Acquired Loans— Loans acquired in connection with acquisitions are recorded at their acquisition-date fair value and are classified into two categories; purchased financial instruments with more than insignificant credit deterioration (“PCD”) loans, and loans with insignificant credit deterioration (“non-PCD”). PCD loans are defined as a loan or group of loans that have experienced more than insignificant credit deterioration since origination. Non-PCD loans will have an allowance established on acquisition date, which is recognized in the current period provision for credit losses. For PCD loans, an allowance is recognized on day 1 by adding it to the fair value of the loan, which is the “Day 1 amortized cost”. There is no credit loss expense recognized on PCD loans because the initial allowance is established by grossing-up the amortized cost of the PCD loan. Determining the fair value of the acquired loans involves estimating the principal and interest cash flows expected to be collected on the loans and discounting those cash flows at a market rate of interest. Management considers a number of factors in evaluating the acquisition-date fair value including the remaining life of the acquired loans, delinquency status, estimated prepayments, payment options and other loan features, internal risk grade, estimated value of the underlying collateral and interest rate environment.

PCD loans are accounted for in accordance with Accounting Standards Codification (“ASC”) 326-20, Financial Instruments – Credit Losses – Measure at Amortized Cost, if, at acquisition, the loan or pool of loans has experienced more-than-insignificant credit

deterioration since origination. At acquisition, Wesbanco considers several factors as indicators that an acquired loan or pool of loans has experienced more-than-insignificant credit deterioration. These factors include, but are not limited to, loans 30 days or more past due, loans with an internal risk grade of below average or lower, loans classified as non-accrual by the acquired institution, the materiality of the credit and loans that have been previously modified in a troubled debt restructuring.

Under ASC 326-20, a group of loans with similar risk characteristics can be assessed to determine if the pool of loans is PCD. However, if a loan does not have similar risk characteristics as any other acquired loan, the loan is individually assessed to determine if it is PCD. In addition, the initial allowance related to acquired loans can be estimated for a pool of loans if the loans have similar risk characteristics. Even if the loans were individually assessed to determine if they were PCD, they can be grouped together in the initial allowance calculation if they share similar risk characteristics. Since Wesbanco uses the discounted cash flow (DCF) approach, the initial allowance calculation for PCD loans is calculated as the expected contractual cash shortfalls, discounted at the rate that equals the net present value of estimated future cash flows expected to be collected with the purchase price of the loan(s). If a PCD loan has an unfunded commitment at acquisition, the initial allowance for credit losses calculation reflects only the expected credit losses associated with the funded portion of the PCD loan. Expected credit losses associated with the unfunded commitment are included in the initial measurement of the commitment.

For PCD loans, the non-credit discount or premium is allocated to individual loans as determined by the difference between the loan’s amortized cost basis and the unpaid principal balance. The non-credit premium or discount is recognized into interest income on a level yield basis over the remaining expected life of the loan. For non-PCD loans, the interest and credit discount or premium is allocated to individual loans as determined by the difference between the loan’s amortized cost basis and the unpaid principal balance. The premium or discount is recognized into interest income on a level yield basis over the remaining expected life of the loan.

Allowance for Credit Losses

Allowance for Credit Losses— The allowance for credit losses specific to loans reduces the loan portfolio to the net amount expected to be collected, representing the lifetime expected losses at the initial origination date. Similarly, an allowance for unfunded loan commitments, which is recorded in other liabilities, represents expected losses on unfunded commitments. Fluctuations in the allowance for credit losses specific to loans, the allowance for unfunded loan commitments, and the allowance for held-to-maturity debt securities are recognized in the provision for credit losses on the consolidated statement of operations. The allowance incorporates forward-looking information and applies a reversion methodology beyond the reasonable and supportable forecast. The allowance is increased by a provision charged to operating expense and reduced by charge-offs, net of recoveries. Management evaluates the appropriateness of the allowance at least quarterly. This evaluation is inherently subjective as it requires material estimates that may be susceptible to significant change from period to period.

The allowance for credit loss calculation specific to loans is based on the loan’s amortized cost basis, which is comprised of the unpaid principal balance of the loan, deferred loan fees (costs) and acquired premium (discount) minus any write-downs. Wesbanco made an accounting policy election to exclude accrued interest from the measurement of the allowance for credit losses because the Company has a policy in place to reverse or write-off accrued interest when a loan is placed on non-accrual, and also Wesbanco made an accounting policy election to reverse accrued interest deemed uncollectible as a reversal of interest income. However, Wesbanco is reserving, as part of the allowance for credit losses, for accrued interest on loan modifications under the CARES Act due to the nature and timing of these deferrals.

The allowance for credit losses reflects the risk of loss on the loan portfolio. To appropriately measure expected credit losses, management disaggregates the loan portfolio into pools of similar risk characteristics. The Company utilizes the probability of default (“PD”) / loss given default (“LGD”) approach to calculate the expected loss for each segment, which is then discounted to net present value. PD is the probability the asset will default within a given timeframe and LGD is the percentage of the assets not expected to be collected due to default. The primary macroeconomic drivers of the quantitative model include forecasts of national unemployment and interest rate spreads. Management relies on macroeconomic forecasts obtained from various reputable sources, which may include the Federal Open Market Committee (FOMC) forecast and other publicly available forecasts from well recognized, leading economists. These forecasts can range from one to two years, depending upon the facts and circumstances of the current state of the economy, portfolio segment and management’s judgment of what can be reasonably supported. The model reversion period can range from immediate to three years.

The allowance for credit losses is calculated over the loan’s contractual life. For term loans, the contractual life is calculated based on the maturity date. For commercial and industrial (“C&I”) revolving loans with no stated maturity date, the contractual life is calculated based on the internal review date. For all other revolving loans, the contractual life is based on either the estimated maturity date or a default date. The contractual term does not include expected extensions, renewals or modifications.

The loan portfolio is segmented based on the risk profiles of the loans. Commercial loans are segmented between commercial real estate (“CRE”), which are collateralized by real estate, and C&I, which are typically utilized for general business purposes. CRE is further segmented between land and construction (“LCD”) and improved property, which are generally loans to purchase or refinance owner occupied or non-owner occupied investment properties. LCD loans have a unique risk that the developer or builder may not complete the project or not complete it on time or within budget. Improved property loans are reviewed for risk based on the underlying real estate property such as rental or owner income, appraisal value and other current lease terms, which affect debt service coverage and loan to value. Retail loans are a homogenous group, generally consisting of standardized products that are smaller in amount and

distributed over a large number of individual borrowers. The group is segmented into three categories – residential real estate, HELOC and consumer.

Contractual terms are adjusted for estimated prepayments to arrive at expected cash flows. Wesbanco models term loans with an annualized “prepayment” rate. When Wesbanco has a specific expectation of differing payment behavior for a given loan, the loan may be evaluated individually. For revolving loans that do not have a principal payment schedule, a curtailment rate is factored into the cash flow.

The evaluation also considers qualitative factors such as economic trends and conditions, which includes levels of regional unemployment, real estate values and the impact on specific industries and geographical markets, changes in lending policies and underwriting standards, delinquency and other credit quality trends, concentrations of credit risk, if any, the results of internal loan reviews and examinations by bank regulatory agencies pertaining to the allowance for credit losses. Management relies on observable data from internal and external sources to the extent it is available to evaluate each of these factors and adjusts the model’s quantitative results to reflect the impact these factors may have on probable losses in the portfolio.

Commercial loans, including CRE and C&I that have unique characteristics, are tested individually for estimated credit losses. Specific reserves are established when appropriate for such loans based on the net present value of expected future cash flows of the loan or the estimated realizable value of the collateral, if any. The present value of expected future cash flows are discounted at the loan’s effective interest rate. The effective interest rate on a loan is the rate of return implicit in the loan, the loan’s observable market price, or the fair value of the collateral discounted by the estimated selling expenses, if the loan is collateral dependent. Wesbanco chooses the appropriate measurement method on a loan by loan basis for an individually evaluated loan, except for collateral dependent loans for which foreclosure of the collateral is probable. A loan is collateral dependent if repayment of the loan is to be provided solely by the underlying collateral. If the Bank determines that foreclosure of the collateral is probable, ASC 326-20 requires that the expected credit loss be based on the difference between the current fair value of the collateral and the amortized cost basis of the financial asset. At this point, the loan would either be charged down or adequately reserved.

Management may also adjust its assumptions to account for differences between expected and actual losses from period to period. The variability of management’s assumptions could alter the level of the allowance for credit losses and may have a material impact on future results of operations and financial condition. The loss estimation models and methods used to determine the allowance for credit losses are continually refined and enhanced.

Premises and Equipment

Premises and Equipment— Premises and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is computed using the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized over the shorter of the estimated economic useful lives of the leased assets or the remaining terms of the underlying leases. Useful lives range from 3 to 10 years for furniture and equipment, 15 to 39 years for buildings and building improvements, and 15 years for land improvements. Maintenance and repairs are expensed as incurred while major improvements that extend the useful life of an asset are capitalized and depreciated over the estimated remaining useful life of the asset.

Operating leases are recorded as a right of use (“ROU”) asset and operating lease liability, included in premises and equipment, net and other liabilities, respectively. Operating lease ROU assets represent the right to use an underlying asset during the lease term and operating lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and operating lease liabilities are recognized at lease commencement based on the present value of the remaining lease payments using a discount rate that represents our incremental borrowing rate at the lease commencement date. Operating lease expense, which is comprised of amortization of the ROU asset and the implicit interest accreted on the operating lease liability, is recognized on a straight-line basis over the lease term, and is recorded primarily in net occupancy expense in the consolidated statements of income.

Other Real Estate Owned and Repossessed Assets

Other Real Estate Owned and Repossessed Assets— Other real estate owned and repossessed assets, which are considered available-for-sale and are reported in other assets, are carried at the lower of cost or their estimated current fair value, less estimated costs to sell. Other real estate owned consists primarily of properties acquired through, or in lieu of, foreclosure. Repossessed collateral primarily consists of automobiles and other types of collateral acquired to satisfy defaulted consumer loans. Subsequent declines in fair value, if any, income and expense associated with the management of the collateral, and gains or losses on the disposition of these assets are recognized in the Consolidated Statements of Income in non-interest income. Refer to Note 13, “Revenue Recognition” for further detail.

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets— Wesbanco accounts for business combinations using the acquisition method of accounting. Accordingly, the identifiable assets acquired, the liabilities assumed, and any non-controlling interest of an acquired business are recorded at their estimated fair values as of the date of acquisition with any excess of the cost of the acquisition over the fair value recorded as goodwill. Other intangible assets represent purchased assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or because the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset, or liability.

Goodwill is not amortized but is evaluated for impairment annually, or more often if events or circumstances indicate it may be impaired. Finite-lived intangible assets, which consist primarily of core deposit and customer list intangibles (long-term customer-relationship intangible assets) are amortized using straight-line and accelerated methods over their weighted-average estimated useful lives, ranging from ten to sixteen years in total, and are tested for impairment whenever events or circumstances indicate that their

carrying amount may not be recoverable. Non-compete agreements are recognized in other assets on the balance sheet and are amortized on a straight-line basis over the life of the respective agreements, ranging from one to four years.

Goodwill is evaluated for impairment by either assessing qualitative factors to determine whether it is necessary to perform the goodwill impairment test, or Wesbanco may elect to perform a quantitative goodwill impairment test. Under the qualitative assessment, Wesbanco assesses qualitative factors to determine whether it is more likely than not that the fair value of its reporting units are less than their carrying amounts, including goodwill. If it is more likely than not, the goodwill impairment test is used to identify potential goodwill impairment and measure the amount of a goodwill impairment loss to be recognized, if any. The estimated fair value of each reporting unit is compared to its carrying value, including goodwill. If the estimated fair value of a reporting unit exceeds its carrying amount, the goodwill of that reporting unit is not considered impaired, and no impairment loss is recognized. However, if the carrying amount of the reporting unit exceeds its fair value, an impairment loss is recognized based on the excess of a reporting unit’s carrying value over its fair value.

Intangible assets with finite useful lives are evaluated for impairment whenever events or changes in circumstances indicate that their carrying amount may not be recoverable. An impairment loss is recognized when the carrying amount of an intangible asset with a finite useful life is not recoverable from its undiscounted cash flows and is measured as the difference between the carrying amount and the fair value of the asset. Wesbanco does not have any indefinite-lived intangible assets.

Bank-Owned Life Insurance

Bank-Owned Life Insurance— Wesbanco has purchased life insurance policies on certain executive and other officers. Wesbanco receives the cash surrender value of each policy upon its termination or benefits are payable upon the death of the insured. These policies are recorded in the Consolidated Balance Sheets at their net cash surrender value. Changes in net cash surrender value are recognized in non-interest income in the Consolidated Statements of Income. Adjustments to cash surrender value and death benefits received, if recognized as income, are currently tax-exempt.

Interest Rate Lock Commitments

Interest Rate Lock Commitments— In order to attract potential home borrowers, Wesbanco offers interest rate lock commitments (“IRLC”) to such potential borrowers. IRLC are generally for sixty days and guarantee a specified interest rate for a loan if underwriting standards are met, but the commitment does not obligate the potential borrower to close on the loan. Accordingly, some IRLC expire prior to the funding of the related loan. For IRLC issued in connection with potential loans intended for sale, which consist primarily of originated longer-term fixed rate residential home mortgage loans that qualify for secondary market sale, the Bank enters into positions of forward month mortgage-backed securities to be announced (“TBA”) contracts on a mandatory basis or on a one-to-one forward sales contract on a best efforts basis.

A mortgage loan sold on a mandatory basis to the secondary market is considered sold when the mortgage loan is funded. Wesbanco enters into TBA contracts in order to control interest rate risk during the period between the IRLC and the sale of the mortgage loan. The IRLC is executed between the mortgagee and Wesbanco, and the forward TBA contract is executed between Wesbanco and a counterparty. Both the IRLC and the forward TBA contract are considered derivatives. A mortgage loan sold on a best efforts basis is locked into a forward sales contract on the same day as the IRLC to control interest rate risk during the period between the IRLC and the sale of the mortgage loan. The IRLC is executed between the mortgagee and Wesbanco, and the forward sales contract is executed between Wesbanco and a counterparty. Both the IRLC and the forward sales contract are considered derivatives. Both types of derivatives are recorded at fair value and are not designated in a qualified hedged accounting program. The changes in fair value are recorded in current earnings within mortgage banking income in the Consolidated Statements of Income. The fair value of IRLC is the gain or loss that would be realized on the underlying loans assuming exercise of the commitments under current market rates versus the rate incorporated in the commitments, taking into consideration loans cancelled prior to closing. The fair value of forward sales contracts is based on quoted market prices. Since loans typically close before receipt of funding from an investor, they are accounted for at fair value as “Loans Held for Sale” in the Consolidated Balance Sheets.

Derivative Instruments and Hedging Activities

Derivative Instruments and Hedging Activities— Wesbanco records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether Wesbanco has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Wesbanco enters into back-to-back interest rate swaps and caps with commercial banking customers and then with counterparties for the offsetting interest rate swap or cap. Currently, none of Wesbanco’s derivatives are designated in qualifying hedging relationships, as the derivatives are not used to manage risks within Wesbanco’s assets or liabilities. As such, all changes in fair value of Wesbanco’s derivatives are recognized directly in earnings.

Income Taxes

Income Taxes— The provision for income taxes included in the Consolidated Statements of Income includes both federal and state income taxes and is based on income in the financial statements, rather than amounts reported on Wesbanco’s income tax returns. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases at which rates they are expected to turnaround. A test of the anticipated realizability of deferred tax assets is performed at least annually.

Fair Value

Fair Value— Fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. Fair value measurements are not adjusted for transaction costs. The ASC also establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives

the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). The three levels of the fair value hierarchy are described below:

Level 1—Quoted prices in active markets for the same security that are accessible at the measurement date for identical, unrestricted assets or liabilities;

Level 2—Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, or model-based valuation techniques where all significant assumptions are observable, either directly or indirectly, in the market;

Level 3—Valuation is generated from model-based techniques where one or more significant assumptions are not observable, either directly or indirectly, in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques may include use of discounted cash flow models and similar techniques.

A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.

Earnings Per Common Share

Earnings Per Common Share— Basic earnings per common share (“EPS”) is calculated by dividing net income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period. For diluted EPS, the weighted-average number of shares for the period is increased by the number of shares, which would be issued assuming the exercise of in-the-money common stock options and any outstanding warrants. Time-based restricted stock shares are recorded as issued and outstanding upon their grant, rather than upon vesting, and therefore are included in the weighted-average shares outstanding due to voting rights granted at the time restricted stock is granted. Performance and market-based restricted stock shares are recorded as issued and outstanding upon their achieving the required performance or market factors. These restricted shares are included in the number of shares outstanding for diluted EPS if their performance or market factors are expected to be achieved as of the reporting date.

Trust Assets

Trust Assets— Assets held by the Bank in fiduciary or agency capacities for its customers are not included as assets in the Consolidated Balance Sheets. Certain money market trust assets are held on deposit at the Bank and are accounted for as such.

Stock-Based Compensation

Stock-Based Compensation— Stock-based compensation awards granted, comprised of stock options, performance and time-based restricted stock, and total shareholder return (“TSR”) awards are valued at fair value and compensation cost is recognized on a straight-line basis over the requisite service or performance period of each award. For service-based awards with graded vesting schedules, compensation expense is divided among the vesting periods with each separately vested portion of the award recognized in compensation expense on a straight-line basis over the requisite service period. For performance-based awards and TSR awards, compensation expense is recognized evenly over the performance period, based on the probability of the achievements of the performance or market conditions set forth in the plans. Upon adoption of Accounting Standards Update (“ASU”) 2016-09, “Compensation-Stock Compensation (Topic 718)”, Wesbanco recognizes forfeitures as they occur rather than estimating them over the life of the award.

Defined Benefit Pension Plan

Defined Benefit Pension Plan— Wesbanco recognizes in the statement of financial position an asset for the plan’s overfunded status or a liability for the plan’s underfunded status. Wesbanco recognizes fluctuations in the funded status in the year in which the changes occur through other comprehensive income. Plan assets are determined based on fair value generally representing observable market prices. The projected benefit obligation is determined based on the present value of projected benefit distributions at an assumed discount rate. The discount rate utilized is based on a fitted yield curve approach whereby the yield curve compares the expected stream of future benefit payments for the plan to high quality corporate bonds available in the marketplace to determine an equivalent discount rate. Periodic pension expense includes service costs, interest costs based on an assumed discount rate, an expected return on plan assets based on an actuarially-derived market-related value, an assumed rate of annual compensation increase, and amortization or accretion of actuarial gains and losses as well as other actuarial assumptions. The service cost component is recognized in salaries and wages and the remaining costs are recognized in employee benefits within the Company’s Consolidated Statement of Income. Wesbanco utilizes a full yield curve approach in the estimation of service and interest components by applying the specific spot rates along the yield curve used in the determination of the benefit obligation to the relevant projected cash flows. The plan has been closed to new entrants since August 2007; however, benefits are still earned for those plan participants with continuing employment after August 2007. Refer to Note 12, “Employee Benefit Plans” for further detail.

Post-retirement Medical Benefit Plan

Post-retirement Medical Benefit Plan— Wesbanco acquired a non-qualified supplemental retirement plan for certain key employees from Farmers Capital Bank Corp. (“FFKT”). The Plan provides lifetime medical and dental benefits upon retirement for certain employees meeting the eligibility requirement, which were amended by Wesbanco upon acquisition. Wesbanco recognizes a liability for the projected benefit obligation in the Consolidated Balance Sheets in other liabilities as this plan is unfunded until period payments are made. Wesbanco recognizes fluctuations in the projected benefit obligation through other comprehensive income. The projected benefit obligation is based on the present value of projected medical and dental obligations at an assumed discount rate. Periodic benefit expense includes service cost, interest cost based on an assumed discount rate, and amortization or accretion of actuarial gains and losses, as well as other actuarial assumptions. Refer to Note 12, “Employee Benefit Plans” for further detail.

Recent accounting pronouncements

Recent accounting pronouncements—The Financial Accounting Standards Board (“FASB”) issued Accounting Standards Updates (“ASU”) as noted below.

ASU 2023-09 – Income Taxes (Topic 740): Improvements to Income Tax Disclosures

In December 2023, the FASB issued ASU 2023-09, "Income Taxes (Topic 740)." The amendments in this Update related to the rate reconciliation and income taxes paid disclosures and are designed to improve the transparency of income tax disclosures by requiring (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) income taxes paid disaggregated by jurisdiction. For Wesbanco, the amendments are effective for annual periods beginning after December 15, 2024. Early adoption is permitted for annual financial statements that have not yet been issued or made available for issuance. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements.

ASU 2023-08 – Intangibles-Goodwill and Other Crypto Assets (Subtopic 350-60): Accounting for and Disclosure of a Crypto Asset

In December 2023, the FASB issued ASU 2023-08, "Intangibles-Goodwill and Other Crypto Assets (Subtopic 350-60)." The amendments in this Update require that an entity measure crypto assets at fair value in the statement of financial position each reporting period and recognize changes from remeasurement in net income. The amendments also require that an entity provide enhanced disclosures for both annual and interim reporting periods to provide investors with relevant information to analyze and assess the exposure and risk of significant individual crypto asset holdings. In addition, fair value measurement aligns the accounting required for holders of crypto assets with the accounting for entities that are subject to certain industry-specific guidance (such as investment companies) and eliminates the requirement to test those assets for impairment, thereby reducing the associated cost and complexity of applying the current guidance. For Wesbanco, the amendments are effective beginning after December 15, 2024, including interim periods within those fiscal years. Early adoption is permitted. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements, as Wesbanco holds no crypto assets.

ASU 2023-07—Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures

In November 2023, the FASB issued ASU 2023-07, “Improvements to Reportable Segment Disclosures (Topic 280).” The amendments in this Update improve financial reporting by requiring disclosure of incremental segment information on an annual and interim basis for all public entities to enable investors to develop more decision-useful financial analyses. The amendments in this Update do not change how a public entity identifies its operating segments, aggregates those operating segments, or applies the quantitative thresholds to determine its reportable segments. For Wesbanco, the amendments are effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements.

ASU 2023-06 - Disclosure Improvements: Codification Amendments in Response to the SEC’s Disclosure Update and Simplification Initiative

In October 2023, the FASB issued ASU 2023-06, "Disclosure Improvements." For entities subject to the SEC’s existing disclosure requirements and for entities required to file or furnish financial statements with or to the SEC in preparation for the sale of or for purposes of issuing securities that are not subject to contractual restrictions on transfer, the effective date for each amendment will be the date on which the SEC’s removal of that related disclosure from Regulation S-X or Regulation S-K becomes effective. If by June 30, 2027, the SEC has not removed the applicable requirement from Regulation S-X or Regulation S-K, the pending content of the related amendment will be removed from the Codification and will not become effective for any entity. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements.

ASU 2023-05 – Business Combinations—Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement

In August 2023, the FASB issued ASU 2023-05, "Business Combinations - Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement," under which an entity that qualifies as either a joint venture or a corporate joint venture as defined in the FASB Accounting Standards Codification ("ASC") master glossary is required to apply a new basis of accounting upon the formation of the joint venture. Specifically, the ASU provides that a joint venture or a corporate joint venture (collectively, “joint ventures”) must initially measure its assets and liabilities at fair value on the formation date. For Wesbanco, the amendments are effective for all joint ventures within the ASU’s scope that are formed on or after January 1, 2025. Early adoption is permitted in any annual or interim period as of the beginning of the related fiscal year. The adoption of this pronouncement is not expected to have a material impact on the Consolidated Financial Statements.

ASU 2023-04 - Liabilities (Topic 405): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 121 (SEC Update)

In August 2023, the FASB issued ASU 2023-04, "Liabilities (Topic 405): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No.121." ASU 2023-04 adds various SEC paragraphs to the Codification to reflect guidance included in SEC Staff Accounting Bulletin No. 121 on safeguarding crypto assets. As of December 31, 2023, this ASU does not apply to Wesbanco as Wesbanco does not safeguard crypto assets.

ASU 2023-03 - Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 120

In July 2023, FASB issued ASU 2023-03, which amends or supersedes various SEC paragraphs within the Codification to conform to past SEC announcements and guidance issued by the SEC. The ASU does not provide any new guidance. Therefore, there is no transition or effective date associated with this update.

ASU 2023-02 – Investments Equity Method and Joint Ventures (Topic 323)

In March 2023, the FASB issued ASU 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method. ASU 2023-02 allows reporting entities to elect to account for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. The ASU’s amendments “remove the specialized guidance for [low-income-housing tax credit] investments that are not accounted for using the proportional amortization method and instead require that those LIHTC investments be accounted for using the guidance in other [GAAP].” For Wesbanco, this update was effective on January 1, 2024. The adoption of this pronouncement did not have a material impact on the Consolidated Financial Statements.

ASU 2023-01 - Leases (Topic 842): Common Control Arrangements

In March 2023, the FASB issued ASU 2023-01, Leases (Topic 842): Common Control Arrangements. ASU 2023-01 amends certain provisions of ASC 842 that apply to arrangements between related parties under common control. Additionally, ASU 2023-01 amends the accounting for leasehold improvements in common-control arrangements for all entities. For Wesbanco, this update was effective on January 1, 2024. The adoption of this pronouncement did not have a material impact on the Consolidated Financial Statements.

ASU 2022-04 - Liabilities – Supplier Finance Programs (Sub-topic 405-50)

In September 2022, the FASB issued ASU 2022-04, “Liabilities—Supplier Finance Programs (Subtopic 405-50).” The amendments in this ASU require that a buyer in a supplier finance program disclose sufficient information about the program to allow a user of financial statements to understand the program’s nature, activity during the period, changes from period to period, and potential magnitude. To achieve that objective, the buyer should disclose qualitative and quantitative information about its supplier finance programs. For Wesbanco, this update was effective on January 1, 2023, except for the amendment on rollforward information, which was effective on January 1, 2024. The adoption of this full pronouncement did not have a material impact on the Consolidated Financial Statements.

ASU 2022-03 - Fair Value Measurement (Topic 820)

In June 2022, the FASB issued ASU 2022-03, "Fair Value Measurement (Topic 820).” The amendments in this ASU clarify that a 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. Furthermore, the amendments to this ASU clarify that an entity cannot, as a separate unit of account, recognize and measure a contractual sale restriction. The update to this ASU requires the following disclosures for equity securities: (1) the fair value of equity securities subject to contractual sale restrictions reflected in the balance sheet; (2) the nature and remaining duration of the restriction(s) and; (3) the circumstances that could cause a lapse in the restriction(s). For Wesbanco, this update was effective on January 1, 2024. The adoption of this pronouncement did not have a material impact on the Consolidated Financial Statements.

ASU 2022-02 - Financial Instruments - Credit Losses (Topic 326)

In March 2022, the FASB issued ASU 2022-02, "Financial Instruments - Credit Losses (Topic 326)." The amendments in this ASU eliminate the accounting guidance for TDRs by creditors in Subtopic 310-40, "Receivables - Troubled Debt Restructurings by Creditors," while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty. Specifically, rather than applying the recognition and measurement guidance for TDRs, an entity must apply the loan refinancing and restructuring guidance in paragraphs 310-20-35-9 through 35-11 to determine whether a modification results in a new loan or a continuation of an existing loan. In addition, for public business entities, the amendments in this Update require that an entity disclose current-period gross writeoffs by year of origination for financing receivables and net investments in leases within the scope of Subtopic 326-20, "Financial Instruments - Credit Losses - Measured at Amortized Cost." For Wesbanco, this update was effective beginning on January 1, 2023. The adoption of this pronouncement did not have a material impact on the Consolidated Financial Statements. For the additional disclosure requirements in this ASU, please refer to the MBEFD policy above and Note 4, "Loans and the Allowance for Credit Losses."

ASU 2020-04, ASU 2021-01 and ASU 2022-06 - Reference Rate Reform (Topic 848)

In March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform (Topic 848).” This ASU provided temporary, optional guidance to ease the potential burden in accounting for, or recognizing the effects of, the transition away from the London Interbank Offered Rate ("LIBOR") or other reference rate expected to be discontinued on financial reporting. The ASU also provides optional expedients for contract modifications that replace a reference rate affected by reference rate reform. The guidance is effective as of March 12, 2020 through December 31, 2022, and can be adopted at any time during this period. In January 2021, the FASB issued ASU 2021-01, “Reference Rate Reform (Topic 848): Scope.” This ASU refines the scope of Topic 848 and addresses questions about whether

Topic 848 can be applied to derivative instruments that do not reference a rate that is expected to be discontinued, but that use an interest rate for margining, discounting or contract price alignment that is expected to be modified as a result of reference rate reform. ASU 2021-01 is effective upon issuance through December 31, 2024, and can be adopted at any time during this period. Wesbanco has not offered LIBOR for any new contracts after December 31, 2021. Wesbanco has chosen the One Month Term Secured Overnight Financing Rate ("1M Term SOFR") as its alternative replacement rate for LIBOR on both back-to-back swaps and on one-month variable loans. A transition plan was implemented in 2021 to identify and modify Wesbanco's loans and other financial instruments with attributes that are either directly or indirectly influenced by LIBOR. In December 2022, the FASB issued ASU 2022-06, “Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848.” In the Update, the Board decided to defer the sunset date of Topic 848 to December 31, 2024, to permit entities to apply the guidance in Topic 848 through the expected cessation date of USD LIBOR. In the Board’s view, that time frame would have been sufficient to provide flexibility for additional unforeseen changes to the timeline of USD LIBOR cessation and to accommodate global interbank offered rate (IBOR) transition. The update did not have a material impact on Wesbanco’s Consolidated Financial Statements. At December 31, 2023, Wesbanco has completed its transition away from LIBOR.