CDT Environmental Technology Investment Holdings Ltd SEC filings CDTG
CDT Environmental Technology Investment Holdings Ltd has 103 filings in SEC EDGAR's recent list, going back to Nov 15, 2019. Its latest annual report, Form 20-F, was filed on May 15, 2026 for the period ended Dec 31, 2025. The most recent current report (Form 6-K) was filed on Jul 28, 2026. The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Aug 25, 2026 | Aug 20, 2026 |
| 3 | Initial insider ownership | Aug 25, 2026 | Aug 20, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 21, 2026 | — |
| 6-K | Current report (foreign issuer) | Jul 28, 2026 | Jul 28, 2026 |
| 6-K | Current report (foreign issuer) | Jul 7, 2026 | Jul 7, 2026 |
| 6-K | Current report (foreign issuer) | Jul 6, 2026 | Jul 6, 2026 |
| 3 | Initial insider ownership | Jun 15, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Jun 15, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Jun 15, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Jun 15, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Jun 15, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Jun 15, 2026 | Mar 18, 2026 |
| 6-K | Current report (foreign issuer) | May 28, 2026 | May 28, 2026 |
| 6-K | Current report (foreign issuer) | May 15, 2026 | May 15, 2026 |
| 20-F | Annual report (foreign issuer) | May 15, 2026 | Dec 31, 2025 |
| NT 20-F | Form nt 20-f | May 1, 2026 | Dec 31, 2025 |
| 424B3 | Prospectus | Apr 17, 2026 | — |
| 3 | Initial insider ownership | Apr 10, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Apr 9, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Apr 3, 2026 | Mar 18, 2026 |
| EFFECT | Filing | Mar 10, 2026 | — |
| CORRESP | Letter to the SEC | Mar 6, 2026 | — |
| F-1 | Registration statement (foreign issuer) | Mar 4, 2026 | — |
| UPLOAD | Letter from the SEC | Feb 23, 2026 | — |
| DRS | Filing | Feb 13, 2026 | — |
| 6-K | Current report (foreign issuer) | Jan 5, 2026 | Jan 5, 2026 |
| 6-K | Current report (foreign issuer) | Dec 23, 2025 | Dec 23, 2025 |
| 6-K | Current report (foreign issuer) | Nov 28, 2025 | Nov 28, 2025 |
| 6-K | Current report (foreign issuer) | Nov 13, 2025 | Nov 13, 2025 |
| 6-K | Current report (foreign issuer) | Sep 29, 2025 | Sep 26, 2025 |
| UPLOAD | Letter from the SEC | Sep 10, 2025 | — |
| CORRESP | Letter to the SEC | Sep 9, 2025 | — |
| 20-F/A | Amended annual report (foreign issuer) | Sep 9, 2025 | Dec 31, 2024 |
| 6-K | Current report (foreign issuer) | Sep 9, 2025 | Sep 9, 2025 |
| CORRESP | Letter to the SEC | Aug 26, 2025 | — |
| CORRESP | Letter to the SEC | Aug 7, 2025 | — |
| UPLOAD | Letter from the SEC | Jul 30, 2025 | — |
| 6-K | Current report (foreign issuer) | May 15, 2025 | May 15, 2025 |
| 20-F | Annual report (foreign issuer) | May 15, 2025 | Dec 31, 2024 |
| NT 20-F | Filing | May 1, 2025 | Dec 31, 2024 |
| S-8 | Employee stock plan registration | Feb 14, 2025 | — |
| 6-K | Current report (foreign issuer) | Dec 27, 2024 | Dec 27, 2024 |
| SC 13G | Ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 14, 2024 | — |
| 6-K | Current report (foreign issuer) | May 20, 2024 | May 20, 2024 |
| 20-F | Annual report (foreign issuer) | May 15, 2024 | Dec 31, 2023 |
| NT 20-F | Form nt 20-f | Apr 26, 2024 | Dec 31, 2023 |
| 6-K | Current report (foreign issuer) | Apr 26, 2024 | Apr 26, 2024 |
| 6-K | Current report (foreign issuer) | Apr 23, 2024 | Apr 23, 2024 |
| 424B4 | Prospectus | Apr 18, 2024 | — |
| CERT | Filing | Apr 18, 2024 | — |
| 8-A12B | Form 8-a12b | Apr 5, 2024 | — |
| EFFECT | Filing | Mar 29, 2024 | — |
| CORRESP | Letter to the SEC | Mar 27, 2024 | — |
| CORRESP | Letter to the SEC | Mar 27, 2024 | — |
| F-1/A | Form f-1/a16 | Mar 22, 2024 | — |
| F-1/A | Form f-1/a15 | Feb 8, 2024 | — |
| CORRESP | Letter to the SEC | Jan 26, 2024 | — |
| F-1/A | Form f-1/a14 | Jan 26, 2024 | — |
| UPLOAD | Letter from the SEC | Jan 24, 2024 | — |
| FWP | Free writing prospectus | Jan 24, 2024 | — |
| CORRESP | Letter to the SEC | Jan 11, 2024 | — |
| F-1/A | Form f-1/a13 | Jan 11, 2024 | — |
| UPLOAD | Letter from the SEC | Jan 8, 2024 | — |
| CORRESP | Letter to the SEC | Dec 20, 2023 | — |
| F-1/A | Form f-1/a12 | Dec 20, 2023 | — |
| F-1/A | Form f-1/a11 | Nov 20, 2023 | — |
| F-1/A | Form f-1/a10 | Mar 29, 2023 | — |
| F-1/A | Form f-1/a9 | Mar 27, 2023 | — |
| CORRESP | Letter to the SEC | Mar 13, 2023 | — |
| UPLOAD | Letter from the SEC | Mar 10, 2023 | — |
| CORRESP | Letter to the SEC | Feb 24, 2023 | — |
| F-1/A | Form f-1/a8 | Feb 24, 2023 | — |
| UPLOAD | Letter from the SEC | Jan 19, 2023 | — |
| CORRESP | Letter to the SEC | Dec 23, 2022 | — |
| F-1/A | Form f-1/a7 | Dec 23, 2022 | — |
| UPLOAD | Letter from the SEC | Apr 11, 2022 | — |
| CORRESP | Letter to the SEC | Mar 25, 2022 | — |
| F-1/A | Form f-1/a | Mar 25, 2022 | — |
| UPLOAD | Letter from the SEC | Mar 17, 2022 | — |
| CORRESP | Letter to the SEC | Mar 1, 2022 | — |
| F-1/A | Form f-1/a5 | Mar 1, 2022 | — |
| UPLOAD | Letter from the SEC | Feb 15, 2022 | — |
| F-1/A | Form f-1/a4 | Jan 19, 2022 | — |
| UPLOAD | Letter from the SEC | Oct 8, 2021 | — |
| CORRESP | Letter to the SEC | Sep 24, 2021 | — |
| CORRESP | Letter to the SEC | Sep 24, 2021 | — |
| F-1/A | Form f-1/a3 | Sep 24, 2021 | — |
| UPLOAD | Letter from the SEC | Sep 10, 2021 | — |
| CORRESP | Letter to the SEC | Aug 26, 2021 | — |
| UPLOAD | Letter from the SEC | Jul 29, 2021 | — |
| F-1/A | Form f-1/a | Jun 25, 2021 | — |
| F-1/A | Form f-1/a | Feb 12, 2021 | — |
| F-1 | Registration statement (foreign issuer) | Jan 15, 2021 | — |
| CORRESP | Letter to the SEC | Nov 27, 2020 | — |
| DRS/A | Filing | Nov 27, 2020 | — |
| UPLOAD | Letter from the SEC | Oct 20, 2020 | — |
| DRS/A | Filing | Sep 23, 2020 | — |
| UPLOAD | Letter from the SEC | Jan 24, 2020 | — |
| DRS/A | Filing | Jan 13, 2020 | — |
| UPLOAD | Letter from the SEC | Dec 13, 2019 | — |
| DRS | Filing | Nov 15, 2019 | — |
Showing 103 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
- Sanitary Services (SIC 4950)
- Listed as
- CDTG (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- Cayman Islands
- Headquarters
- Nanshan District, China
- SEC filer status
- Non-accelerated filer, Emerging growth company
- SEC CIK
- 1793895
- Former names
- CDT Enviromental Technology Investment Holdings Ltd (until Nov 15, 2019)
Other Sanitary Services companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.