X0306 4 2019-04-01 0 0000730708 SEACOAST BANKING CORP OF FLORIDA SBCF 0001494418 HOUDESHELL DAVID D P. O. BOX 9012 STUART FL 34995 0 1 0 0 EVP & Chief Risk Officer Common Stock 2019-04-02 4 F 0 841 26.97 D 4336 D Common Stock 2019-04-01 4 F 0 768 26.93 D 1951 D Common Stock 30560 D Commonn Stock Right to Buy 31.15 2028-04-02 Common Stock 12635 12635 D Commonn Stock Right to Buy 28.69 2027-04-03 Common Stock 16650 16650 D Commonn Stock Right to Buy 14.82 2024-02-28 Common Stock 13225 13225 D Common Stock Right to Buy 12.63 2023-01-28 Common Stock 6475 6475 D Common Stock Right to Buy 10.54 2015-04-29 2024-04-29 Common Stock 25000 25000 D Common Stock Right to Buy 11.00 2014-06-28 2023-06-27 Common Stock 4200 4200 D Represents shares of restricted stock units ("RSUs") granted on April 2, 2018. One-third of the shares vest on each of April 2, 2019, 2020 and 2021, provided the recipient remains in continuous service with the Company on each such vesting date and the Company's banking subsidiary meets certain capital requirements. Represents shares of restricted stock units ("RSUs") granted on April 3, 2017. One-third of the shares vest on each of April 3, 2018, 2019 and 2020, provided the recipient remains in continuous service with the Company on each such vesting date and the Company's banking subsidiary meets certain capital requirements. Granted pursuant to the Company's Amended and Restated 2013 Incentive Plan. Vests over 3 years in one-third increments each anniversary of the date of grant beginning on the first anniversary of the date of grant (the date indicated), subject to continuous employment on each vesting and the Company's banking subsidiary meets certain capital requirements. Originally had two tiered vesting. Performance criteria was met and time-based vesting began on 12/1/2016. Option vests in equal installments at the end of each month over the next 48 months, provided that Optionee remains in continuous service on each applicable vesting date. Originally had two tiered vesting. Performance criteria was met and time-based vesting began on 7/1/15. Option vests in equal installments at the end of each month over the next 48 months, provided that Optionee remains in continuous service on each applicable vesting date. Vests over 3 years in one-third increments each anniversary of the date of grant beginning on the first anniversary of the date of grant (the date indicated), subject to continued employment. Vests over 5 years at the rate of 20% on the first anniversary of the date of grant and then at the rate of 20% on each of the following four anniversaries thereafter, subject to continue employment. /s/ Dennis S. Hudson, III as Power of Attorney for David D. Houdeshell 2019-04-03