Company: SFNC
Filing Date: 2025-04-03
Form Type: DEFR14A
Source: 0001174947-25-000480
Chunk: 24

Company: SIMMONS FIRST NATIONAL CORP
Filing Date: 2025-04-03
Form: DEFR14A
Chunk 24
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 to promote conducting the business of the Company in accordance with the highest ethical standards of conduct and to promote the ethical handling of conflicts of interest, full and fair disclosure, and compliance with laws, rules, and regulations. All associates are required to read and acknowledge the code each year. •We maintain a whistleblower policy that is designed to provide associates with a way to report to the Company activity that is considered to be illegal, dishonest, or fraudulent. The whistleblower program includes telephone and web -basedreporting channels. The whistleblower policy addresses protections for whistleblowers, including maintaining, to the extent possible, confidentiality and restrictions concerning retaliation. The policy also provides for certain Board reporting and oversight. •We also maintain a Related Party Transactions Policy to address matters with respect to related party business dealings. 16

Policy Regarding Employee, Officer and Director Hedging and Pledging We have a policy that prohibits directors of the Company or any of its affiliates, as well as officers of those entities who are at least senior vice presidents, from engaging in transactions (including, without limitation, prepaid variable forward contracts, short sales, call or put options, equity swaps, collars, units of exchange funds, and other derivatives) that are designed to hedge or offset, or that may reasonably be expected to have the effect of hedging or offsetting, a decrease in the market value of any Company securities. In addition, such persons are prohibited from pledging, hypothecating, or otherwise encumbering Company securities as collateral for indebtedness. Any exception to the policy requires the prior approval of the NCGC. Communication with Directors Shareholders may communicate directly with the Board by sending correspondence to the address shown below. If the shareholder desires to communicate with a specific director, the correspondence should be addressed to such director. Correspondence addressed to the Board will be forwarded to the Chairman of the Board for review. The receipt of the correspondence and the nature of its content will be reported at the next Board (or appropriate committee of the Board) meeting and appropriate action, if any, will be taken. Correspondence addressed to a specific director will be delivered to such director promptly after receipt by the Company. Each such director shall review the correspondence received and, if appropriate, report the receipt of the correspondence and the nature of its content to the Board at its next meeting so that the appropriate action, if any, may be taken.

| Correspondence should be addressed to: |     | Simmons First National Corporation         |
|                                        |     | Board of Directors                         |
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