Sunlands Technology Group SEC filings STG
Sunlands Technology Group has 144 filings in SEC EDGAR's recent list, going back to Dec 13, 2017. Its latest annual report, Form 20-F, was filed on Apr 24, 2026 for the period ended Dec 31, 2025. The most recent current report (Form 6-K) was filed on Aug 20, 2026. The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 28, 2026 | — |
| 3 | Initial insider ownership | Apr 2, 2026 | Apr 1, 2026 |
| 3 | Initial insider ownership | Apr 1, 2026 | Apr 1, 2026 |
| 3 | Initial insider ownership | Apr 1, 2026 | Apr 1, 2026 |
| 3 | Initial insider ownership | Apr 1, 2026 | Apr 1, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 15, 2025 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Mar 7, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Mar 7, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 24, 2024 | — |
| 144 | Notice of proposed sale | Mar 10, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 3, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 3, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Mar 4, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Mar 4, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Jan 6, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Aug 14, 2019 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2019 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2019 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 28, 2019 | — |
| SC 13G | Ownership over 5% (passive) | May 3, 2018 | — |
Showing 32 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Services-Educational Services (SIC 8200)
- Listed as
- STG (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- Cayman Islands
- Headquarters
- Beijing
- SEC filer status
- Non-accelerated filer
- SEC CIK
- 1723935
- Former names
- Sunlands Online Education Group (until Nov 23, 2018)
Other Services-Educational Services companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.