X0609 4 2026-05-06 0 0000730708 SEACOAST BANKING CORP OF FLORIDA SBCF 0001916396 STALLINGS JAMES C III false P.O. BOX 9012 STUART FL 34995 0 1 0 0 EVP, Chief Credit Officer 0 Common Stock 2026-05-06 4 S 0 7552 31.16 D 7247 D Common Stock 3647 D Common Stock 2299 D Common Stock 3100 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from 31.16 to 31.18. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price for this transaction. Represents an unvested time-based restricted stock award granted on April 1, 2024, which shall vest over 3 years in one-third increments, beginning on April 1, 2025, and on each anniversary thereafter, subject to continued employment. Represents an unvested time based restricted stock award grated on April 1, 2025, which vests over 3 years in one-third increments, beginning April 1, 2026, and on each anniversary thereafter subject to continued employment Represents unvested time based restricted stock units granted on April 15, 2026, which vests over 3 years in one-third increments, beginning on April 15, 2027, and on each anniversary thereafter subject to continued employment /s/ Kathy L. Hsu as Power of Attorney for James C. Stallings, III 2026-05-07