SouthState Bank Corp

On December 9, 2025, David R. Brooks, amember of the Company’s Board of Directors, terminated a 10b5-1 trading plan that had been adopted on August 26, 2025. The termination was not related to any material nonpublic information and no transactions occurred under this plan.

On December 10, 2025, David R. Brooks adopted a new Rule 10b-51 trading plan inaccordance with Rule 10b5-1(c)(1) under the Securities Exchange Act of 1934. The plan provides for the potential sale of up to 300,109 shares of the Company’s common stock, subject to specified price, volume, and timing conditions. Transactions under the plan may begin after the expiration of the applicable cooling-off period and will terminatethe earlier of November 30, 2026 or the completion of all planned transactions. As of the date of this report, no transactions have occurred under the new plan.

During the year ended December 31, 2025, no other directors or officers adopted or terminated a “Rule 10b5­-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement”, as each term is defined in Item 408(a) of Regulation S-K.