FASB ASC 842 – In February 2016, the FASB issued its new lease accounting guidance in ASU No. 2016-02, Leases (Topic 842). Under the new guidance, lessees will be required to recognize the following for all leases, with the exception of short-term leases, at the commencement date: (1) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged.

In July 2018, the FASB issued ASU No. 2018-10, Codification Improvements to Topic 842, Leases and ASU No. 2018-11, Leases (Topic 842): Targeted Improvements. ASU No. 2018-10 provides improvements related to ASU No. 2016-02 to increase stakeholders’ awareness of the amendments and to expedite the improvements. The amendments affect narrow aspects of the guidance issued in ASU No. 2016-02. ASU No. 2018-11 allows entities adopting ASU No. 2016-02 to choose an additional (and optional) transition method, under which an entity initially applies the new leases standard at the adoption date and recognizes a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. ASU No. 2018-11 also allows lessors to not separate non-lease components from the associated lease component if certain conditions are met. The amendments in these updates became effective for annual periods and interim periods within those annual periods beginning after December 15, 2018.

Old National elected the optional transition method permitted by ASU No. 2018-11. Under this method, an entity shall recognize and measure leases that exist at the application date and prior comparative periods are not adjusted. In addition, Old National elected the package of practical expedients to leases that commenced before the effective date:

An entity need not reassess whether any expired or existing contracts contain leases.

An entity need not reassess the lease classification for any expired or existing leases.

An entity need not reassess initial direct costs for any existing leases.

Old National also elected the practical expedient, which must be applied consistently to all leases, to use hindsight in determining the lease term and in assessing impairment of our right-of-use assets. We also elected a practical expedient to not assess whether existing or expired land easements that were not previously accounted for as leases under Topic 840 contain a lease under this Topic. Both of these practical expedients may be elected separately or in conjunction with each other or the package noted above.

Based on both operating and finance leases outstanding at December 31, 2018, the impact of adoption on January 1, 2019 was recording a lease liability of $122.9 million, a right-of-use asset of $118.7 million, and a cumulative-effect adjustment of $6.3 million to increase retained earnings.

FASB ASC 310 – In March 2017, the FASB issued ASU No. 2017-08, Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities. This update amends the amortization period for certain purchased callable debt securities held at a premium. FASB is shortening the amortization period for the premium to the earliest call date. Under current GAAP, entities generally amortize the premium as an adjustment of yield over the contractual life of the instrument. Concerns were raised that current GAAP excludes certain callable debt securities from consideration of early repayment of principal even if the holder is certain that the call will be exercised. As a result, upon the exercise of a call on a callable debt security held at a premium, the unamortized premium is recorded as a loss in earnings. There is diversity in practice (1) in the amortization period for premiums of callable debt securities and (2) in how the potential for exercise of a call is factored into current impairment assessments. The amendments in this update became effective for annual reporting periods beginning after December 15, 2018, including interim reporting periods within those annual reporting periods and did not have a material impact on the consolidated financial statements.

FASB ASC 718 – In June 2018, the FASB issued ASU No. 2018-07, Compensation – Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting. The amendments in this update expand the scope of Topic 718, Compensation—Stock Compensation (which currently only includes share-based payments to employees) to include share-based payments issued to nonemployees for goods or services. Consequently, the accounting for share-based payments to nonemployees and employees will be substantially aligned. The ASU supersedes Subtopic 505-50, Equity—Equity-Based Payments to Non-Employees. The amendments in this update became effective for annual periods beginning after December 15, 2018, including interim periods within that fiscal year and did not have a material impact on the consolidated financial statements.

FASB ASC 958 – In June 2018, the FASB issued ASU No. 2018-08, Not-for-Profit Entities (Topic 958): Clarifying the Scope and the Accounting Guidance for Contributions Received and Contributions Made. The amendments in this update clarify and improve the scope and accounting guidance around contributions of cash and other assets received and made by not-for-profit organizations and business enterprises. The ASU clarifies and improves current guidance about whether a transfer of assets, or the reduction, settlement, or cancellation of liabilities, is a contribution or an exchange transaction. It provides criteria for determining whether the resource provider is receiving commensurate value in return for the resources transferred which, depending on the outcome, determines whether the organization follows contribution guidance or exchange transaction guidance in the revenue recognition and other applicable standards. It also provides a more robust framework for determining whether a contribution is conditional or unconditional, and for distinguishing a donor-imposed condition from a donor-imposed restriction. This is important because such classification affects the timing of contribution revenue and expense recognition. The new ASU does not apply to transfers of assets from governments to businesses. The amendments in this update became effective for a public business entity for transactions in which the entity serves as a resource recipient to annual periods beginning after June 15, 2018, including interim periods within those annual periods. The amendments in this update became effective for a public business entity for transactions in which the entity serves as a resource provider to annual periods beginning after December 15, 2018, including interim periods within those annual periods and there was no impact.

FASB ASC 815 – In October 2018, the FASB issued ASU No. 2018-16, Derivatives and Hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting. In the United States, eligible benchmark interest rates under Topic 815 are interest rates on direct Treasury obligations of the U.S. government (“UST”), the London Interbank Offered Rate (“LIBOR”) swap rate, and the Overnight Index Swap (“OIS”) Rate based on the Fed Funds Effective Rate. When the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, in August 2017, it introduced the Securities Industry and Financial Markets Association (“SIFMA”) Municipal Swap Rate as the fourth permissible U.S. benchmark rate.

The new ASU adds the OIS rate based on SOFR as a U.S. benchmark interest rate to facilitate the LIBOR to SOFR transition and provide sufficient lead time for entities to prepare for changes to interest rate risk hedging strategies for both risk management and hedge accounting purposes. The amendments in this update became effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years and the financial statement impact immediately upon adoption was immaterial. The future financial statement impact will depend on

any new contracts entered into using new benchmark rates, as well as any existing contracts that get migrated from LIBOR to new benchmark interest rates. The Company has formed a working group who is developing a transition plan for all exposed contracts migrating from LIBOR to SOFR. The Company has identified contracts that reflect exposure associated with LIBOR-indexed financial instruments that mature beyond 2021 in an aggregate notional amount of $4.8 billion. Additionally, the working group is monitoring industry specific transition guidance around a LIBOR contract’s “fallback” language with the industry goal to minimize or eliminate value transfers resulting from the transition. The associated risks identified include dependence on third parties for critical decisions regarding SOFR index calculations, spread adjustments, term rate development, and product development, which may impact the bank’s ability to establish more detailed timelines for action.

Codification Updates to SEC Sections – In July 2019, the FASB issued ASU No. 2019-07, Codification Updates to SEC Sections, which amends certain SEC sections or paragraphs within the Accounting Standards Codification to reflect changes in SEC Final Rule Releases No. 33-10532, “Disclosure Update and Simplification,” and 33-10231 and 33-10442, “Investment Company Reporting Modernization.” Other revisions in ASU No. 2019-07 update language in the codification to match the electronic Code of Federal Regulations. The amendments became effective upon addition to the FASB Codification and there is no impact on the consolidated financial statements.

FASB ASC 326 – In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“CECL”). The main objective of this amendment is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The amendment requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to enhance their credit loss estimates. The amendment requires enhanced disclosures to help investors and other financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. The current expected credit loss measurement will be used to estimate the allowance for credit losses (“ACL”) over the life of the financial assets. The amendments in this update become effective for annual periods and interim periods within those annual periods beginning after December 15, 2019. Early adoption will be permitted beginning after December 15, 2018.

As previously disclosed, Old National formed a cross functional committee to oversee the adoption of the ASU at the effective date. A working group was also formed and has developed a project plan focused on understanding the ASU, researching issues, identifying data needs for modeling inputs, technology requirements, modeling considerations, and ensuring overarching governance has been achieved for each objective and milestone. Currently, the working group has identified seven distinct loan portfolios for which a model has been developed. For all seven loan portfolios, the data sets have been identified, populated, and internally validated. Old National has completed data and model validation testing. During the remainder of 2019, the project plan is targeting multiple parallel processing of our existing allowance for loan losses model compared to the CECL model, as well as model sensitivity analysis, determination of qualitative adjustments, supporting analytics, and execution of the governance and approval process.

Currently, our measurements for estimating the current expected life-time credit losses for loans and debt securities (as well as certain beneficial interests classified as held-to-maturity) includes the following major items:

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Initial forecast – using a period of one year for all portfolio segments and off-balance-sheet credit exposures, using forward-looking economic scenarios of expected losses.

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Historical loss forecast – for a period incorporating the remaining contractual life, adjusted for prepayments, and the changes in various economic variables during representative historical and recessionary periods.

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Reversion period – using two years, which links the initial loss forecast to the historical loss forecast based on economic conditions at the measurement date.

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Discounted cash flow (“DCF”) aggregator – using the items above to estimate the life-time credit losses for all portfolios and losses for loans modified as a TDR.

During the remainder of 2019, Old National will continue researching and resolving interpretive accounting issues in the ASU, evaluating and refining processes and related controls, finalizing various related accounting policies, and reporting disclosures.

As of the beginning of the first reporting period in which the new standard is effective, Old National expects to recognize a one-time cumulative effect adjustment increasing the allowance for loan losses, since the ASU covers credit losses over the expected life of a loan as well as considering future changes in macroeconomic conditions. Old National currently estimates an increase to the allowance for credit losses of approximately $35 million to $45 million upon adoption, which includes a range of $3 million to $8 million for off-balance sheet exposures. At this point in time, the vast majority of this increase is related to the acquired loan portfolio. Under the current accounting guidance, any remaining unamortized loan discount on an individual loan can be used to offset a charge-off for that loan, so the allowance for loan losses needed for the acquired loans is reduced by the remaining loan discounts. The new accounting under the ASU removes the ability to offset a charge-off against the remaining loan discount and requires an allowance for credit losses to be recognized in addition to the loan discount. The ultimate impact of adopting the ASU will be highly dependent on credit quality, macroeconomic forecasts and conditions, composition of our loans and securities portfolios, and other management judgements at the time of adoption. The transition adjustment to record the allowance for credit losses may fall outside of management’s estimated increase based on material changes in these dependencies, specifically the macroeconomic forecast and conditions, used in calculating the allowance for credit losses upon the adoption of CECL.

Old National does not expect a material allowance for credit losses to be recorded on held-to-maturity securities under the CECL credit impairment model, as the composition of these securities are government agency-backed securities for which the risk the risk of loss is minimal. Additionally, Old National does not expect a material allowance for credit losses to be recorded on its available-for-sale debt securities under the available-for-sale debt security impairment model, as the majority of these securities are government agency-backed securities for which the risk of loss is minimal.

In December 2018, the OCC, the Board of Governors of the Federal Reserve System, and the FDIC approved a final rule to address changes to credit loss accounting under GAAP, including banking organizations’ implementation of CECL. The final rule provides banking organizations the option to phase in over a three-year period the day-one adverse effects on regulatory capital that may result from the adoption of the new accounting standard. Old National is planning on adopting the capital transition relief over the permissible three-year period.

FASB ASC 350 – In January 2017, the FASB issued ASU No. 2017-04, Intangibles: Goodwill and Other: Simplifying the Test for Goodwill Impairment. To simplify the subsequent measurement of goodwill, the amendments eliminate Step 2 from the goodwill impairment test. The annual, or interim, goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount. An impairment charge should be recognized for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. In addition, the income tax effects of tax deductible goodwill on the carrying amount of the reporting unit should be considered when measuring the goodwill impairment loss, if applicable. The amendments also eliminate the requirements for any reporting unit with a zero or negative carrying amount to perform Step 2 of the goodwill impairment test. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the qualitative impairment test is necessary. The amendments should be applied on a prospective basis. The nature of and reason for the change in accounting principle should be disclosed upon transition. The amendments in this update should be adopted for annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted on testing dates after January 1, 2017. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact.

FASB ASC 820 – In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement. The updated guidance improves the disclosure requirements on fair value measurements. The ASU removes certain disclosures required by Topic 820 related to transfers between Level 1 and Level 2 of the fair value hierarchy; the policy for timing of transfers between levels; the valuation processes for Level 3 fair value measurements; and for nonpublic entities, the changes in unrealized gains and losses for the period included in earnings for recurring Level 3 fair value measurements held at the end of the reporting period. The ASU modifies certain disclosures required by Topic 820 related to disclosure of transfers into and out of Level 3 of the fair value hierarchy and purchases and

issues of Level 3 assets and liabilities for nonpublic entities; the requirement to disclose the timing of liquidation of an investee’s assets and the date when restrictions from redemption might lapse only if the investee has communicated the timing to the entity or announced the timing publicly for investments in certain entities that calculate net asset value; and clarification that the measurement uncertainty disclosure is to communicate information about the uncertainty in measurement as of the reporting date. The ASU adds certain disclosure requirements related to changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period and the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. For certain unobservable inputs, an entity may disclose other quantitative information in lieu of the weighted average if the entity determines that other quantitative information would be a more reasonable and rational method to reflect the distribution of unobservable inputs used to develop Level 3 fair value measurements. The amendments in this update become effective for fiscal years, and interim periods within those fiscal years beginning after December 15, 2019. Early adoption is permitted. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact.

FASB ASC 715 – In August 2018, the FASB issued ASU No. 2018-14, Compensation – Retirement Benefits – Defined Benefit Plans – General (Subtopic 715-20): Disclosure Framework – Changes to the Disclosure Requirements for Defined Benefit Plans. The amendments in this update modify the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The amendments in this update become effective for fiscal years ending after December 15, 2020 and will not have a material impact on the consolidated financial statements.

FASB ASC 350 – In August 2018, the FASB issued ASU No. 2018-15, Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract. The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The amendments in this update become effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements.

FASB ASC 842 – In March 2019, the FASB issued ASU No. 2019-01, Leases (Topic 842): Codification Improvements. The amendments in ASU No. 2019-01 align the guidance for fair value of the underlying asset by lessors that are not manufacturers or dealers in Topic 842 with that of existing guidance. As a result, the fair value of the underlying asset at lease commencement is its cost, reflecting any volume or trade discounts that may apply. However, if there has been a significant lapse of time between when the underlying asset is acquired and when the lease commences, the definition of fair value in Topic 820, Fair Value Measurement should be applied. ASU No. 2019-01 also requires lessors within the scope of Topic 942, Financial Services—Depository and Lending, to present all “principal payments received under leases” within investing activities. The amendments in this update become effective for annual periods and interim periods within those annual periods beginning after December 15, 2019. Early adoption is permitted. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact.

FASB ASC 326, 815, and 825 – In April 2019, the FASB issued ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments—Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments. The amendments related to Topic 326 address accrued interest, transfers between classifications or categories for loans and debt securities, recoveries, vintage disclosures, and contractual extensions and renewal options and will become effective for annual periods and interim periods within those annual periods beginning after December 15, 2019. The improvements and clarifications related to Topic 815 address partial-term fair value hedges of interest-rate risk, amortization, and disclosure of fair value hedge basis adjustments and consideration of hedged contractually specified interest rate under the hypothetical method and will become effective for the annual reporting period beginning January 1, 2020. The amendments related to Topic 825 contain various improvements to ASU 2016-01, including scope; held-to-maturity debt securities fair value disclosures; and remeasurement of equity securities at historical exchange rates and will become effective for fiscal years and interim periods beginning after December 15, 2019. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact.

FASB ASC 326 – In May 2019, the FASB issued ASU No. 2019-05, Financial Instruments—Credit Losses (Topic 326): Targeted Transition Relief. These amendments provide targeted transition relief allowing entities to irrevocably elect the fair value option, on an instrument-by-instrument basis, for certain financial assets (excluding held-to-maturity debt securities) previously measured at amortized cost. The amendments in this update become effective for annual periods and interim periods within those annual periods beginning after December 15, 2019. Old National is currently evaluating the impact of adopting the new guidance on the consolidated financial statements, but it is not expected to have a material impact.