UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 000-04065 Lancaster Colony Corporation (Exact name of registrant as specified in its charter) Ohio 13-1955943 (State or other jur ...