X0609 4 2026-08-12 0001090009 SOUTHERN FIRST BANCSHARES INC SFST 0001243370 SEAVER R ARTHUR JR false P.O. BOX 17465 GREENVILLE SC 29606 1 1 Chief Executive Officer 0 Common Stock 2026-08-12 4 S 0 5000 63.00 D 97597 D Common Stock 2026-08-12 4 S 0 5000 63.50 D 92597 D Common Stock 2026-08-12 4 S 0 6000 64.00 D 86597 D Common Stock 2026-08-12 4 S 0 500 64.00 D 86097 D Common Stock 2026-08-12 4 S 0 4500 63.75 D 81597 D Common Stock 2026-08-12 4 M 0 2903 39.45 A 84500 D Common Stock 2026-08-12 4 M 0 2827 42.72 A 87327 D Common Stock 2026-08-12 4 M 0 2254 42.80 A 89581 D Common Stock 2026-08-12 4 M 0 2445 32.32 A 92026 D Stock Options (Right to Buy) 39.45 2026-08-12 4 M 0 2903 0 D 2022-01-19 2031-01-19 Common Stock 2903 12097 D Stock Options (Right to Buy) 42.72 2026-08-12 4 M 0 2827 0 D 2021-01-21 2030-01-21 Common Stock 2827 5173 D Stock Options (Right to Buy) 42.80 2026-08-12 4 M 0 2254 0 D 2019-01-16 2028-01-16 Common Stock 2254 5746 D Stock Options (Right to Buy) 32.32 2026-08-12 4 M 0 2445 0 D 2020-01-15 2029-01-15 Common Stock 2445 5555 D Stock options vest equally over four years. Stock Options vest equally over four years. R. Arthur Seaver, Jr. /s/Julie A. Fairchild, POA 2026-08-13