On July 30, 2025, George A. Makris, Jr. announced his retirement as CEO of Simmons First National Corp, effective December 31, 2025, with James 'Jay' M. Brogdon appointed as his successor starting January 1, 2026. The company also elected Marty D. Casteel as chairman effective January 1, 2026, with a public announcement made on August 4, 2025.