UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K REPORT OF FOREIGN ISSUER PURSUANT TO RULE 13a-16 OR 15d-1 6 OF THE SECURITIES EXCHANGE ACT OF 1934 For the month of April 2024 Commission file number: 001-38423 SUNLANDS TECHNOLOGY GROUP (Exact Name of Registrant as Specified in Its Charter) Building 6, Chaolai Science Park, No. 36 Chuangyuan Road, Chaoyang District Beijing, 100012, the People’s Republic of China +86-10-52413738 (Address of Principal Executive Offices) Indicate ...