UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 29, 2024 SAB BIOTHERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-39871 85-3899721 (State or Other Jurisdiction (Commission File Number) (IRS Employer of Incorporation) Identification No .) 2100 East 54th Street North Sioux Falls, South Dakota 57104 (A ...