Company: SFNC
Filing Date: 2025-07-23
Form Type: 424B5
Source: 0001193125-25-162761
Chunk: 19

Company: SIMMONS FIRST NATIONAL CORP
Filing Date: 2025-07-23
Form: 424B5
Chunk 19
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 on our common stock. We cannot assure you of our ability to continue to pay dividends. Our ability to pay dividends depends on the following factors, among others:

| • |     | We may not have sufficient earnings since our primary source of income, the payment of dividends to us by the                                                                                                                                       
 Bank, is subject to federal and state laws that limit the ability of Simmons Bank to pay dividends, and recently we have had to apply for state regulatory approval for certain dividends paid by Simmons Bank to the Company, as further discussed 
 below;                                                                                                                                                                                                                                              |

| • |     | Federal Reserve policy requires bank holding companies to pay cash dividends on common stock only out of net                                                            
 income available over the past year and only if prospective earnings retention is consistent with the organization’s expected future needs and financial condition; and |

| • |     | Our Board of Directors may determine that, even though funds are available for dividend payments, retaining the 
 funds for internal uses, such as expansion of our operations, is a better strategy.                             |

The approval of the Arkansas Bank Commissioner is required if the total of all dividends declared by an Arkansas state bank in any calendar year exceeds seventy-five percent (75%) of the total of its net profits, as defined, for that year combined with seventy-five percent (75%) of its retained net profits of the preceding year. Under the foregoing dividend restrictions, and while maintaining its “well capitalized” status, at March 31, 2025 and June 30, 2025, Simmons Bank had paid to the Company all available dividends. Past dividends are not necessarily indicative of amounts that may be paid or available to be paid in future periods, and future dividends are subject to the sufficiency of net profits of Simmons Bank and cash balances at the Company after payment of interest and principal on the Company’s debt as well as meeting other liquidity needs. If we fail to pay dividends, capital appreciation, if any, of our common stock may be the sole opportunity for gains on an investment in our common stock. In addition, in the event Simmons Bank becomes unable to pay dividends to us, we may not be able to service our debt or pay our other obligations or pay dividends on our common stock. Accordingly, our inability to receive dividends from Simmons Bank could also have a material S-17

adverse effect on our business, financial condition and results of operations and the value of your investment in our common stock. Simmons Bank’s ability to pay dividends or make other
payments to us, as well as our ability to