HANCOCK WHITNEY CORP New Standards Disclosure

RECENT ACCOUNTING PRONOUNCEMENTS

Accounting Standards Adopted in 2025

In December 2023, the FASB issued ASU 2023-09 "Income Taxes (Topic 740): Improvements to Income Tax Disclosures," to enhance the transparency and decision usefulness of income tax disclosures by requiring additional categories of information about federal, state, and foreign income taxes to be included in the rate reconciliation and by requiring more detail to be disclosed on certain reconciling item categories that meet a quantitative threshold. Additionally, the amendment requires all entities to annually disclose disaggregated information about income taxes paid using specific quantitative thresholds and income tax expense (or benefit) from continuing operations. The amendments in this update are effective for annual periods beginning after December 15, 2024. Entities should apply the amendments on a prospective basis and retrospective application is permitted. The Company has adopted the standard and elected to apply retrospective application. Refer to Note 15 – Income Taxes for the required disclosures. As the update contains only amendments to disclosure requirements, adoption of this standard had no impact to the Company’s consolidated results of operations or financial condition.

Accounting Standards Issued But Not Yet Adopted

In November 2024, the FASB issued ASU 2024-03, “Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40),” to improve the disclosures about a public business entity’s expenses in commonly presented expense captions. The amendments in this update require disclosure of specified information about certain costs and expenses in the notes to financial statements. Disclosure requirements also include a qualitative description of the amounts remaining in relevant expense captions that are not separately disaggregated quantitatively, among other items. An entity is not precluded from providing additional voluntary disclosures that may provide investors with additional decision-useful information. This update, as amended, is effective for annual reporting periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027. Early adoption is permitted. The amendments in this update should be applied either prospectively to financial statements issued for reporting periods after the effective date of this update, or retrospectively to any or all prior periods presented in the financial statements. The Company is currently assessing the provisions of

this guidance. As the update contains only amendments to disclosure requirements, adoption will have no impact to the Company’s consolidated results of operations or financial condition.

In September 2025, the FASB issued ASU 2025-06, “Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software,” to modernize the accounting for software costs that are accounted for under Subtopic 350-40. The amendments in this update remove all references to prescriptive and sequential software development stages in Subtopic 350-40 and instead require an entity to begin capitalizing software costs when both of the following occur: (1) management has authorized and committed to funding the software project, and (2) it is probable that the project will be completed and the software will be used to perform the function. The amendment also provides factors to consider when evaluating probable-to-complete recognition thresholds and specifies that the disclosures in Subtopic 360-10, “Property, Plant and Equipment,” are required for all capitalized internal-use software. Further, the amendment supersedes website development costs guidance and incorporates the recognition requirements in this subtopic. The amendments in this update are effective for all entities for annual reporting periods beginning after December 15, 2027, and interim reporting periods within those annual reporting periods. Early adoption is permitted as of the beginning of an annual reporting period. Entities may apply a prospective transition approach, a modified transition approach or a retrospective approach. The Company is currently assessing the provisions of this guidance, but does not expect adoption to have a material impact to the Company’s consolidated results of operations or financial condition.

In November 2025, the FASB issued ASU 2025-08, “Financial Instruments – Credit Losses (Topic 326): Purchased Loans,” to expand the population of acquired assets subject to the gross-up approach in Topic 326. Under the amendments in this update, loans (excluding credit cards) acquired without credit deterioration that are deemed “seasoned” are considered purchased seasoned loans and accounted for using the gross-up approach at acquisition. Non-purchased credit deteriorated loans (excluding credit cards) are seasoned if they are acquired in a business combination or were purchased at least 90 days after origination and the acquirer was not involved in the origination of the loans. Under the gross-up approach, the fair value discount is bifurcated between the credit and noncredit components, and the credit portion of the fair value discount is added to the initial amortized cost basis with a corresponding increase in the allowance for credit losses at the date of acquisition. Any noncredit premium or discount resulting from acquiring these seasoned loans is allocated to each individual asset and accreted or amortized to interest income using the effective yield method. Prior to this amendment, all non-purchased credit deteriorated loans acquired were recorded at the estimated fair value of the loan at acquisition, with the estimated allowance for credit loss recorded as a provision for credit losses through earnings in the period in which the acquisition occurred. The amendments in this update are effective for all entities for annual reporting periods beginning after December 15, 2026, and interim reporting periods within those annual reporting periods. The amendments should be applied prospectively to loans that are acquired on or after the initial application date. Early adoption is permitted in an interim or annual reporting period in which financial statements have not yet been issued or made available for issuance. The Company has elected to early adopt this standard as of January 1, 2026. As of the date of this filing there are no pending acquisitions, and therefore, the early adoption of this standard is not expected to have an impact on the Company’s consolidated results of operations or financial condition.

In November 2025, the FASB issued ASU 2025-09, “Derivative and Hedging (Topic 815): Hedge Accounting Improvements,” to clarify certain aspects of the guidance on hedge accounting and to address several incremental hedge accounting issues arising from the global reference rate reform initiative. The update addresses five issues: (1) the ability to group individual forecasted transactions in a cash flow hedge, modifying the term “shared risk exposure” to “similar risk exposure;” (2) the ability to apply cash flow hedge accounting to “choose your rate” debt instruments; (3) the application of cash flow hedge accounting to forecasted purchases and sales of nonfinancial assets; (4) the use of net written options has hedging instruments; and (5) the mechanics of assessing hedge effectiveness for foreign-currency-denominated dual hedge strategies. This update is effective for public business entities in the interim and annual reporting periods beginning after December 15, 2026, with early adoptions permitted. Entities should apply the amendments on a prospective basis for all hedging relationships. An entity may elect to adopt the amendments for hedging relationships that exist as of the date of adoption. Upon adoption, entities are permitted to modify certain critical terms of certain existing hedging relationships without dedesignating the hedge. The Company is currently assessing the provisions of this guidance but does not expect adoption to have a material impact to the Company’s consolidated results of operations or financial condition.

In December 2025, the FASB issued ASU 2025-11, “Interim Reporting (Topic 270): Narrow Scope Improvements," to improve interim reporting guidance in Topic 270 by improving the navigability of the required interim disclosures, clarifying when that guidance is applicable, and providing additional guidance on what disclosures should be provided in interim reporting periods. This update reorganizes and clarifies interim reporting guidance without expanding disclosure requirements. Key provisions include clarification of entities in scope of ASC 270, updates to the form and content requirements for condensed interim financial statements, and a new disclosure principle requiring disclosure of material events since year-end. This update is effective for public entities for interim reporting periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. The amendments in this update can be applied either prospectively or retrospectively to any or all prior periods presented in the financial statements. The Company is currently assessing the provisions of this guidance. As the update contains only

clarification of disclosure requirements, adoption will have no impact to the Company’s consolidated results of operations or financial condition.