Reg FD Disclosure

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): August 14, 2023 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 7.01.   Regulation FD Disclosure On August 14, 2023, Cal-Maine Foods, Inc. (the “Company”) issued a press release announcing that the Company has published its 2022 Sustainability   Overview.   The full report may   be found on the   Company’s website   at www.calmainefoods.com.   A copy of the Company’s press release is attached   hereto as Exhibit 99.1 to this Current Report. In accordance with General Instruction B.2 of Form 8-K, the information   in this Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1 hereto, which are furnished herewith pursuant   to and relate to this Item 2.02, shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended   (the "Exchange Act"), or otherwise be subject to the liabilities of Section 18 of the Exchange Act. The information in   this Item 2.02 of this Current Report on Form 8-K and Exhibit 99.1 hereto shall not be incorporated by reference into any filing   or other document filed by the Company with the SEC pursuant to the Securities Act of 1933, as amended, the rules and regulations of the   SEC thereunder, the Exchange Act, or the rules and regulations of the SEC thereunder except as shall be expressly set forth by   specific reference to this Form 8-K in such filing or document. Item 9.01.   Financial Statements and Exhibits (d)   Exhibits Exhibit Number Description 99.1 Press Release issued by the Company on August 14, 2023 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: August 14, 2023 By:   /s/ Max P. Bowman   Max P. Bowman   Director, Vice President, and Chief Financial Officer