X0306 4 2018-01-23 0 0000090498 SIMMONS FIRST NATIONAL CORP SFNC 0001381734 West Malynda K 264 RAINWATER ROAD EL DORADO AR 71730 1 0 0 0 SFNC 2018-01-23 4 M 0 84 59.45 A 819 D Restricted Stock Unit 2018-01-23 4 A 0 337 0.00 A Common 337 337 D Restricted Stock Unit 59.45 2018-01-23 4 M 0 84 59.45 D Common 84 253 D Each Restricted Stock Unit represents a contingent right to receive one share of Simmons First National Corporation common stock. 84 Restricted Stock Units vest on January 23, 2018; 84 Restricted Stock Units vest on April 02, 2018; 84 Restricted Stock Units vest on July 02, 2018 and 85 Restricted Stock Units vest on October 01, 2018. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability and other specified events in the agreement may result in earlier vesting. The Restricted Stock Unit vested on January 23, 2018. 84 Restricted Stock Units vest on April 02, 2018; 84 Restricted Stock Units vest on July 02, 2018 and 85 Restricted Stock Units vest on October 01, 2018. SFNC shares will be delivered within 30 days of vesting. Events such as retirement, death, disability and other specified events in the agreement may result in earlier vesting. /s/Malynda K. West by Danielle Hasty 2018-01-25