SUSTAINABILITY ACCOUNTING STANDARDS BOARD INDEX 36 In the index below, we are reporting certain SASB metrics that are relevant to our commercial banking activities, which constitute refer to our quarterly earnings materials as well as our quarterly and annual reports on Form 10-Q and Form 10-K, respectively. our principal line of business. Where information relating to a specific metric was not readily available, we have, to the extent Certain information may not be disclosed within the index below if it is not considered material or if it is privileged or confidential, practicable, referenced existing disclosures that we believe are most responsive to that metric. Unless otherwise noted, all data and could cause a competitive disadvantage to our business if publicly disseminated, or is not currently collected in a manner wholly descriptions are as of or for the year ended December 31, 2022. For additional information about our financial performance, please correlative with the related SASB metric. Metric Response Data Security 1) Number of data breaches, (2) percentage involving personally identifiable information (PII), (3) To the extent that Hancock Whitney has material cybersecurity incidents, those incidents would be number of account holders affected FN-CB-230a.1 reported in our 2022 annual report. Description of approach to identifying and addressing data security risks FN-CB-230a.2 Refer to the “Operational Risk Management” section on page 73 of our 2022 annual report; the “Board’s Role in Oversight of Cyber Risk” section on page 32 of our 2022 proxy statement; and the “Information Security and Privacy” section beginning on page 27 of our 2022 ESG Report. Financial Inclusion & Capacity Building (1) Number and (2) amount of loans outstanding qualified to programs designed to promote small Refer to the “Reinvesting in Our Communities” section beginning on page 13 of our 2022 ESG Report business and community development FN-CB-240a.1 for certain information relating to this item. (1) Number and (2) amount of past due and nonaccrual loans qualified to programs designed to See introduction for reasons for nondisclosure. promote small business and community development FN-CB-240a.2 Number of no-cost retail checking accounts provided to previously unbanked or underbanked See introduction for reasons for nondisclosure. customers FN-CB-240a.3 Number of participants in financial literacy initiatives for unbanked, underbanked, or underserved Refer to the “Financial Education,” “Hancock Whitney Financial Cents” and “Hancock Whitney customers FN-CB-240a.4 Financial Education Month and Founders Month” sections on page 11 of our 2022 ESG Report. Incorporation of Environmental, Social & Governance Factors in Credit Analysis Commercial and industrial credit exposure, by industry FN-CB-410a.1 Refer to Table 11, “Commercial & Industrial Loans by Industry Concentration” on page 58 of our 2022 annual report. Description of approach to incorporation of environmental, social and governance (ESG) factors in Refer to the “Loan Production, Underwriting Standards and Credit Review” section on page 6 of our credit analysis FN-CB-410a.2 2022 annual report for certain information relating to this item. Business Ethics Total amount of monetary losses as a result of legal proceedings associated with fraud, insider Our material legal proceedings and legal contingencies disclosures are included in Note 19 – trading, anti-trust, anti-competitive behavior, market manipulation, malpractice, or other related Commitments and Contingencies, to the consolidated financial statements on page 134 of our 2022 financial industry laws or regulations FN-CB-510a.1 annual report. Description of whistleblower policies and procedures FN-CB-510a.2 Refer to the “Whistleblower Policy” included on the investor relations page of our website. Systemic Risk Management Global Systemically Important Bank (G-SIB) score, by category FN-CB-550a.1 According to the Basel Committee on Banking Supervision’s assessment methodology, Hancock Whitney is not considered to be a Global Systemically Important Bank and, accordingly, does not have a G-SIB score. Description of approach to incorporation of results of mandatory and voluntary stress tests into capital Refer to the “Risk Committee Governance Structure” section on page 69 of our 2022 annual report for adequacy planning, long-term corporate strategy and other business activities FN-CB-550a.2 certain information relating to this item. Activity Metrics (1) Number and (2) value of checking and savings accounts by segment: (a) personal and (b) small See introduction for reasons for nondisclosure. business FN-CB-000.A (1) Number and (2) value of loans by segment: (a) personal, (b) small business and (c) corporate See introduction for reasons for nondisclosure. FN-CB-000.B