United States Securities and Exchange Commission Washington, D.C. 20549 FORM 10-Q (Mark One) (cid:0) QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 (cid:0) 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 incorporati ...

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 ...

United States Securities and Exchange Commission Washington, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 ¨ 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 (State or Other Jurisdiction 20-4729288 of Incorporation or Organizati ...