United States Securities and Exchange Commission Washington, D.C. 20549 FORM 10-Q (Mark One) ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File No.: 000-51821 LAKE SHORE BANCORP, INC. (Exact name of registrant as specified in its charter) United States 20-4729288 (State or other jurisdiction of incorporation or organ ...