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6-K

Sunlands Technology Group (STG)

6-K 2025-04-25 For: 2025-04-25
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Added on April 10, 2026

UNITEDSTATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN ISSUERPURSUANT TO RULE 13a-16 OR 15d-16 OFTHE SECURITIES EXCHANGE ACT OF 1934

For the month of April 2025

Commission file number: 001-38423

SUNLANDSTECHNOLOGY GROUP

(Exact Name of Registrant as Specified in Its Charter)

Building 6, Chaolai Science Park, No. 36

Chuangyuan Road, ChaoyangDistrict

Beijing, 100012, thePeople’s Republic of China

+86-10-52413738

****(Address of Principal Executive Offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.    Form 20-F  ☒       Form 40-F  ☐

EXHIBIT INDEX

Exhibit No. Description
99.1 Press Release

Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Sunlands Technology Group
Date: April 25, 2025 By: /s/ Tongbo Liu
Name: Tongbo Liu
Title: Chief Executive Officer

Exhibit 99.1


****


SunlandsTechnology Group Files its Annual Report on Form 20-F

BEIJING, April 25, 2025 -- Sunlands Technology Group (NYSE: STG) (“Sunlands” or the “Company”), a leader in China’s adult online education market and China’s adult personal interest learning market, today announced that it has filed its annual report on Form 20-F for the fiscal year ended December 31, 2024 with the U.S. Securities and Exchange Commission (the “SEC”) on April 25, 2025, U.S. Eastern Time.

The annual report can be accessed on the Company’s investor relations website at https://ir.sunlands.com and on the SEC’s website at www.sec.gov. The Company will provide a hard copy of the annual report containing the audited consolidated financial statements, free of charge, to its shareholders and ADS holders upon request. Requests should be directed to sl-ir@sunlands.com.

About Sunlands

Sunlands Technology Group (NYSE: STG) (“Sunlands” or the “Company”), formerly known as Sunlands Online Education Group, is a leader in China’s adult online education market and China’s adult personal interest learning market. With a one to many live streaming platform, Sunlands offers various degree- or diploma-oriented post-secondary courses as well as professional certification preparation, professional skills and interest courses. Students can access the Company’s services either through PC or mobile applications. The Company’s online platform cultivates a personalized, interactive learning environment by featuring a virtual learning community and a vast library of educational content offerings that adapt to the learning habits of its students. Sunlands offers a unique approach to education research and development that organizes subject content into Learning Outcome Trees, the Company’s proprietary knowledge management system. Sunlands has a deep understanding of the educational needs of its prospective students and offers solutions that help them achieve their goals.

For more information, please visit https://ir.sunlands.com.

For investorand media inquiries, please contact:

Sunlands Technology Group

Investor Relations

Email: sl-ir@sunlands.com

SOURCE: Sunlands Technology Group