See accompanying Notes to Consolidated Financial Statements (unaudited)

The terms “FNB,” “the Corporation,” “we,” “us” and “our” throughout this Report mean F.N.B. Corporation and our consolidated subsidiaries, unless the context indicates that we refer only to the parent company, F.N.B. Corporation. When we refer to "FNBPA" in this Report, we mean our bank subsidiary, First National Bank of Pennsylvania, and its subsidiaries.

F.N.B. Corporation, headquartered in Pittsburgh, Pennsylvania, is a diversified financial services company operating in seven7 states and the District of Columbia. Our market coverage spans several major metropolitan areas including: Pittsburgh, Pennsylvania; Baltimore, Maryland; Cleveland, Ohio; Washington, D.C.; and Charlotte, Raleigh, Durham and the Piedmont Triad (Winston-Salem, Greensboro and High Point) in North Carolina. As of June 30, 2019,2020, we had 378353 banking offices throughout Pennsylvania, Ohio, Maryland, West Virginia, North Carolina, South Carolina and South Carolina.Virginia.

We provide a full range of commercial banking, consumer banking and wealth management solutions through our subsidiary network which is led by our largest affiliate, FNBPA, founded in 1864. Commercial banking solutions include corporate banking, small business banking, investment real estate financing, government banking, business credit, capital markets and lease financing. Consumer banking provides a full line of consumer banking products and services, including deposit products, mortgage lending, consumer lending and a complete suite of mobile and online banking services. Wealth management services include asset management, private banking and insurance.

Our accompanying Consolidated Financial Statements and these Notes to Consolidated Financial Statements (unaudited) include subsidiaries in which we have a controlling financial interest. We own and operate FNBPA, First National Trust Company, First National Investment Services Company, LLC, F.N.B. Investment Advisors, Inc., First National Insurance Agency, LLC, Bank Capital Services, LLC and F.N.B. Capital Corporation, LLC, and include results for each of these entities in the accompanying Consolidated Financial Statements.

Companies in which we hold more than a 50% voting equity interest, or a controlling financial interest, or are a variable interest entity (VIE)VIE in which we have the power to direct the activities of an entity that most significantly impact the entity’s economic performance and hashave an obligation to absorb losses or the right to receive benefits from the VIE which could potentially be significant to the VIE, are consolidated. For a voting interest entity, a controlling financial interest is generally where we hold more than 50% of the outstanding voting shares. VIEs in which we do not hold the power to direct the activities of the entity that most significantly impact the entity’s economic performance or does not have an obligation to absorb losses or the right to receive benefits from the VIE which could potentially be significant to the VIE are not consolidated. Investments in companies that are not consolidated are accounted for using the equity method when we have the ability to exert significant influence. Investments in private investment partnerships that are accounted for under the equity method or the cost method are included in other assets and our proportional interest in the equity investments’ earnings are included in other non-interest income. Investment interests accounted for under the cost and equity methods are periodically evaluated for impairment.

The accompanying interim unaudited Consolidated Financial Statements include all adjustments that are necessary, in the opinion of management, to fairly reflect our financial position and results of operations in accordance with GAAP. All significant intercompany balances and transactions have been eliminated. Certain prior period amounts have been reclassified to conform to the current period presentation. Such reclassifications had no impact on our net income and stockholders’ equity. Events occurring subsequent to June 30, 20192020 have been evaluated for potential recognition or disclosure in the Consolidated Financial Statements through the date of the filing of the Consolidated Financial Statements with the Securities and Exchange Commission.

Our accounting and reporting policies conform with GAAP. The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the amounts reported in the Consolidated Financial Statements and accompanying Notes to Consolidated Financial Statements (unaudited). Actual results could materially differ from those estimates. Material estimates that are particularly susceptible to significant changes include the allowance for credit losses,ACL, accounting for loans acquired in a business combination prior to January 1, 2020, fair value of financial instruments, goodwill and other intangible assets, litigation, income taxes and deferred tax assets.

On January 1, 2020, we adopted ASU 2016-13, Financial Instruments-Credit Losses (Topic 326), which replaces the incurred credit loss impairment methodology with a methodology that reflects lifetime current expected credit losses (commonly referred to as CECL) for most financial assets measured at amortized cost, including loans, HTM debt securities, net investment in leases and Hedging Activitiescertain off-balance sheet credit exposure. We adopted CECL using the modified retrospective method for financial assets measured at amortized cost, net investments in leases and off-balance sheet credit exposures. As a result, we recorded a reduction of $50.6 million in retained earnings as of January 1, 2020 for the cumulative effect of the adoption. The transition adjustment was primarily driven by longer duration commercial and consumer real estate loans. Results for reporting periods prior to January 1, 2020 continue to be reported in accordance with previously applicable GAAP.

From timeWe used the prospective transition method for PCD financial assets that were previously classified as PCI and accounted for under ASC 310-30, including loans accounted for by analogy under ASC 310-30. In accordance with the transition guidance, we did not reassess whether PCI assets met the criteria for PCD assets nor did we reassess whether modifications to time,individual acquired financial assets previously accounted for in pools were TDRs as of the date of adoption. We discontinued the use of pools beyond transition accounting and account for these loans on an individual loan basis. After transition, loans previously accounted for in pools are grouped with other loans with similar risk characteristics for purposes of estimating expected credit losses. As a result, beginning in 2020 certain credit metrics and ratios which previously excluded PCI loans now include PCD loans. On January 1, 2020, the amortized cost basis of the PCD assets was adjusted to reflect the addition of an ACL for $50.3 million. The net noncredit discount, after the adjustment for the ACL, will be accreted into interest income at the loan’s effective interest rate over the remaining contractual life.

HTM debt securities are securities that management has the positive intent and ability to hold until their maturity. Such securities are carried at amortized cost. Beginning in 2020, for certain HTM securities we have an expectation of zero expected credit losses. Based on a long history with no credit losses, high credit ratings, guarantees, and/or implied risk-free characteristics, we expect the nonpayment of our UST, Fannie Mae, Freddie Mac, FHLB, Ginnie Mae, and the SBA securities to be zero, and accordingly, have no ACL on those securities. We believe that these qualitative factors are indicators that historical credit loss information should be nominally impacted, if at all, by current conditions and reasonable and supportable forecasts. As such, we believe that without a change in these indicators, we may entercontinue to assume zero credit losses on securities concluded to exhibit those factors. We also have a portfolio of HTM debt securities where we do not expect credit losses to be zero. This portfolio consists of high-grade municipal securities. To calculate the expected credit losses on these securities we group securities by major security type, rating and maturity and apply respective cumulative default rates from a third party data provider. The baseline credit loss estimate is adjusted using a qualitative approach to account for potential variability in probabilities of default data for current conditions and reasonable and supportable forecasts. Where available, expected credit losses take into derivative transactions principally to protect against the risk of adverse priceconsideration any enhancement a security has such as insurance or interest rate movements on the value of certain assetsstate aid.

Debt securities that are not classified as trading or HTM are classified as AFS and liabilities and on future cash flows. All derivative instruments are carried at fair value. AFS debt securities in unrealized loss positions are evaluated for impairment related to credit losses at least quarterly. Impairment may result from credit deterioration of the issuer or collateral underlying the security. In performing an assessment of whether any decline in fair value is due to a credit loss, all relevant information is considered at the individual security level.

Beginning in 2020, for AFS debt securities in an unrealized loss position, we first determine whether we have the intent to sell, or it is more likely than not that we will be required to sell, the security before recovery of its amortized cost basis. If the criteria for intent or requirement to sell is met, the security’s amortized cost is written down to fair value and the write down is charged against the ACL with any incremental impairment reported in earnings in the Provision for Credit Losses line on the Consolidated Balance Sheets as either an assetStatements of Income. For AFS debt securities that do not meet the criteria for intent or liability. Accounting forrequirement to sell, we evaluate whether the changesdecline in fair value has resulted from credit losses or other factors. We first qualitatively evaluate each security to assess whether a potential credit loss exists. If as a result of this qualitative analysis we expect to get all of our principal back, then we conclude that the present value of expected cash flows equals or exceeds its amortized cost and no credit loss exists. If it was determined a potential credit loss exists, we compare the present value of cash flows expected to be collected with our amortized cost basis to measure its value. The credit loss is recorded through ACL, limited to the amount the fair value is less than the amortized cost basis. We have made an accounting policy election for each major security type of AFS debt securities to adjust the effective interest rate used to discount expected cash flows to consider the timing of expected cash flows resulting from expected prepayments. Impairment for noncredit-related factors is recorded in OCI, net of income taxes.

Debt restructurings or loan modifications for a borrower occur in the normal course of business and do not necessarily constitute TDRs. In general, the modification or restructuring of a derivativedebt constitutes a TDR, including reasonably expected TDR, if we for economic or legal reasons related to the borrower’s financial difficulties grant a concession to the borrower that we would not otherwise consider under current market conditions or once we have determined that a loan modification for a financially troubled borrower is dependent upon whether it has beenthe most appropriate strategy. Additionally, a loan designated as a TDR does not necessarily result in the automatic placement of the loan on non-accrual status. When the full collection of principal and interest is reasonably assured on a loan designated as a TDR and where the borrower would not otherwise meet the criteria for non-accrual status, we will continue to accrue interest on the loan. Prior to 2020, we did not consider a restructured acquired loan as a TDR if the loan was accounted for as a component of a pool.

TDR classification does not include short-term assistance to borrowers who are current at the time of a natural disaster or other extreme event (e.g. floods, hurricanes and pandemics). These borrowers are considered to not be experiencing financial difficulty at the time of modification, therefore not meeting the criteria for determining TDR status. For modifications of leases related to the effects of the COVID-19 pandemic that do not result in a formal, qualifying hedging relationship. For derivativessubstantial increase in qualifying hedging relationships,our rights as lessor or the obligations of the lessee, we formally document all relationships between hedging instrumentselected to account for these lease concessions as though enforceable rights and hedged items,obligations for those concessions existed in the original contracts. We will account for these concessions as if no changes were made to the lease contract.