X0508 4 2023-08-17 1 0001530249 FS Bancorp, Inc. FSBW 0001368780 FULLER ROBERT B C/O FS BANCORP, INC. 6920 220TH STREET SW MOUNTLAKE TERRACE WA 99201 0 1 0 0 Retried Chief Credit Officer 0 Common Stock 2023-08-17 4 D 0 4712 0 D 3368 D Common Stock 2023-08-24 4 M 0 1920 29.3 A 5288 D Common Stock 2023-08-24 4 M 0 1328 24.37 A 6616 D Common Stock 2023-08-24 4 M 0 1648 21.35 A 8264 D Common Stock 2023-08-24 4 F 0 4896 30.68 D 3368 D Common Stock 5816 I By ESOP Stock Option (Right to Buy) 0 2023-08-17 4 D 0 11824 0 D Common Stock 11824 10596 D Stock Option (Right to Buy) 29.3 2023-08-24 4 M 0 1920 0 D 2019-08-15 2028-08-15 Common Stock 1920 8676 D Stock Option (Right to Buy) 24.37 2023-08-24 4 M 0 1328 0 D 2020-08-15 2029-08-15 Common Stock 1328 7348 D Stock Option (Right to Buy) 21.35 2023-08-24 4 M 0 1648 0 D 2021-08-15 2030-08-15 Common Stock 1648 5700 D The shares disposed are unvested restricted shares forfeited as a result of the reporting person's retirement as Chief Credit Officer on 08/17/2023. Of the total shares forfeited, 664 shares arc from the 08/15/2019 restricted stock grant award, 1,648 shares arc from the 08/15/2020 restricted stock grant award, 1,500 shares arc from the 08/15/2021 restricted stock grant award and 900 shares are from the 08/15/2022 restricted stock grant award. The options disposed are unvested non-qualified stock options forfeited as a result of the reporting person's retirement on 08/17/2023. Of the total options forfeited, 1,328 options are from the 08/15/2019 non-qualified stock option grant award, 3,296 options are from the 08/15/2020 non-qualified stock option grant award, 4,500 options are from the 08/15/2021 non-qualified stock option grant award and 2,700 options are from the 08/15/2022 non-qualified stock option grant award. /s/Robert B. Fuller 2023-08-24