X0508 4 2026-02-06 0001569994 Waterstone Financial, Inc. WSBF 0001343499 Gordon Douglas S 11200 WEST PLANK CT. WAUWATOSA WI 53226 1 0 Common Stock 2026-02-06 4 S 0 6765 18.265 D 559653 D Common Stock 53495 I By IRA Common Stock 22503 I By Trust The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at different prices. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4. /s/ William F. Bruss, Attorney-in-fact 2026-02-10