Company Update

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act Date of Report (Date of Earliest Event Reported): June 2, 2025 Cal-Maine Foods, Inc. (Exact name of registrant as specified in its charter)   Delaware 001-38695 64-0500378 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.)     1052 Highland Colony Pkwy , Suite 200 , Ridgeland , MS 39157 (Address of principal executive offices (zip code))   601 - 948-6813 (Registrant’s telephone number, including area code) Check the appropriate box below if the Form 8-K filing is intended   to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2 below): ☐   Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)   ☐   Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐   Pre-commencement communications pursuant to Rule 14d-2(b) under   the Exchange Act (17 CFR 240.14d-2(b)) ☐   Pre-commencement communications pursuant to Rule 13e-4(c) under   the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the   Act: Title of each class Trading Symbol(s) Name of each exchange on which registered Common Stock, $0.01 par value per share CALM The NASDAQ   Global Select Market Indicate by check mark whether the registrant is an emerging growth company   as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).   Emerging growth company ☐   If an emerging growth company, indicate by check mark if the registrant has elected not   to use the extended transition period for complying with any new or revised financial accounting standards provided   pursuant to Section 13(a) of the Exchange Act. ☐       Item 8.01 Other Events On June 2,   2025, Cal-Maine Foods, Inc.   (the “Company”) issued a   press release announcing it   has closed the   previously announced   acquisition   of   Echo   Lake   Foods,   LLC   (formerly   Echo   Lake   Foods,   Inc.)   and   certain   related   companies (collectively “Echo   Lake Foods”).   Echo Lake   Foods produces,   packages, markets   and distributes   ready-to-eat egg   products and breakfast foods,   including waffles, pancakes,   scrambled eggs,   frozen cooked omelets,   egg patties, toast   and diced eggs. A copy of the Company’s press release is attached hereto as Exhibit 99.1 to   this Current Report. Item 9.01.   Financial Statements and Exhibits (d)   Exhibits Exhibit Number Description 99.1 Press Release issued by the Company on June 2, 2025 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) SIGNATURES   Pursuant to the   requirements for the   Securities Exchange Act of 1934,   the registrant has   duly caused this   report to be   signed on its behalf by the undersigned hereunto duly authorized.           CAL-MAINE FOODS, INC. Date: June 2, 2025 By:   /s/ Max P. Bowman   Max P. Bowman   Director, Vice President, and Chief Financial Officer