X0609 4 2026-04-23 false 0002059653 Lake Shore Bancorp, Inc. /MD/ LSBK 0001282955 LIDDELL KIM C false 31 EAST FOURTH STREET DUNKIRK NY 14048 false false false true Dir., Pres. and CEO of Bank false Common Stock 2026-04-23 4 F false 631 15.85 D 70367 D Common Stock 10000 I By Spouse Common Stock 41661 I By IRA Common Stock 1949 I By ESOP The reporting person elected to pay for a tax liability by withholding securities incident to the vesting of a security (restricted stock) based on a market price of $15.85. Includes 6,363 remaining shares of unvested restricted stock that were granted on March 12, 2025 and were scheduled to vest in four equal annual installments beginning on the first anniversary of the grant. Includes 3,499 remaining shares of unvested restricted stock that were granted on April 23, 2024 and were scheduled to vest in four equal annual installments beginning on the first anniversary of the grant. 1,748 shares vested on April 23, 2026. Includes 6,285 shares of unvested restricted stock that were granted on March 18, 2026 and vest in four equal annual installments beginning on the first anniversary of the grant. These shares were acquired pursuant to an Employee Stock Ownership Plan Allocation. /s/ Taylor M. Gilden, pursuant to power of attorney 2026-04-24