Company: SFNC
Filing Date: 2025-09-10
Form Type: 424B5
Source: 0001193125-25-200113
Chunk: 25

Company: SIMMONS FIRST NATIONAL CORP
Filing Date: 2025-09-10
Form: 424B5
Chunk 25
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 reduction in the amount of interest that accrues on the Notes during the floating rate period, which may adversely affect the trading prices of the Notes. In addition, the interest rate on the SOFR-linked subordinated notes for any day
will not be adjusted for any modification or amendment to SOFR for that day that FRBNY may publish if the interest rate for that day has already been determined prior to such publication. Further, if the Benchmark rate on the Notes during the
floating rate period for any interest period declines to zero or becomes negative, interest will only accrue on the Notes at a rate equal to the spread of 3.02% per annum with respect to that interest period. Changes in SOFR could have a material
adverse effect on the yield on, value of and market for the Notes.

A decrease in SOFR would reduce the rate of interest on the Notes.

The interest rate to be borne by the Notes is based on a spread over SOFR or, if the calculation agent determines prior to the relevant
reference time that a Benchmark Transition Event and its related Benchmark Replacement Date have occurred with respect to Three-Month Term SOFR, upon the applicable Benchmark

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Replacement. Changes in SOFR or such Benchmark Replacement will affect the rate at which the Notes accrue interest and the amount of interest payments on the Notes. Any decrease in SOFR or such
Benchmark Replacement will lead to a decrease in the Notes’ interest rate.

Any Benchmark Replacement may not be the economic equivalent of Three-Month Term SOFR.

Under the benchmark transition provisions of the Notes, if the calculation agent determines that a Benchmark
Transition Event and its related Benchmark Replacement Date have occurred with respect to Three-Month Term SOFR, then the interest rate on the Notes during the floating rate period will be determined using the next-available Benchmark Replacement
(which may include a related Benchmark Replacement Adjustment (as defined under “Description of the Notes — Interest”)). However, the Benchmark Replacement may not be the economic equivalent of Three-Month Term SOFR. For example,
Compounded SOFR (as defined under “Description of the Notes — Effect of Benchmark Transition Event”), the first available Benchmark Replacement, is the compounded average of SOFRs for the applicable Corresponding Tenor (as defined
under “Description of the Notes — Interest”), with the rate, or methodology for this rate, and conventions for this rate being established by the calculation agent as described in the section titled “Description of the
Notes,” while Three-Month Term SOFR is