Exhibit 99.1 FOR IMMEDIATE RELEASE SYMBOL: LANC May 2, 2024 TRADED: Nasdaq LANCASTER COLONY REPORTS THIRD QUARTER SALES AND EARNINGS WESTERVILLE, Ohio, May 2 - Lancaster Colony Corporation (Nasdaq: LANC) today reported results for the company’s fiscal third quarter ended March 31, 2024. Summary • Consolidated net sales increased 1.4% to a third quarter record $471.4 million versus$464.9 million last year. Retail net sales improved 0.3% to $248.1 million while Foodservice net sales grew 2.6$223.4 milli ...