X0508 4 2024-03-06 0001569994 Waterstone Financial, Inc. WSBF 0001601016 Gerke Mark Raymond 11200 WEST PLANK CT. WAUWATOSA WI 53226 1 CFO / Sr. Vice President 0 Common Stock 2024-03-06 4 A 0 1568 0 A 28631 D Common Stock 2024-03-06 4 F 0 559 12.15 D 28072 D Common Stock 32604 I By ESOP Common Stock 1761 I By 401(k) Stock Options 12.7500 2016-03-04 2025-03-04 Common Stock 5000 5000 D Stock Options 14.9800 2016-06-21 2025-06-21 Common Stock 10000 10000 D Reflects transactions not required to be reported pursuant to Section 16 of the Securities Exchange Act of 1934, as amended. On March 6, 2021 the reporting person was granted 1,807 shares of restricted stock subject to a three-year cliff vesting schedule and subject to the satisfaction of certain performance criteria. On March 6, 2024, 1,568 shares vested and were transferred to the executive. /s/ William F. Bruss , pursuant to power of attorney 2024-03-08