Connect Biopharma Holdings Ltd SEC filings CNTB
Connect Biopharma Holdings Ltd has 196 filings in SEC EDGAR's recent list, going back to Dec 17, 2020. Its latest annual report, Form 10-K, was filed on Mar 31, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 12, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 30, 2026 (regulation fd disclosure, other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 3, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 6, 2026 | — |
| 4 | Insider transaction | Oct 1, 2026 | Sep 30, 2026 |
| 4 | Insider transaction | Oct 1, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 30, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 15, 2026 | Sep 15, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| 10-Q | Quarterly report | Aug 12, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2026 | Aug 12, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jun 2, 2026 | May 29, 2026 |
| EFFECT | Filing | Jun 1, 2026 | — |
| CORRESP | Letter to the SEC | May 28, 2026 | — |
| UPLOAD | Letter from the SEC | May 22, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| F-3 | Shelf registration (foreign issuer) | May 15, 2026 | — |
| 10-Q | Quarterly report | May 12, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 12, 2026 | May 12, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Apr 23, 2026 | Apr 23, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 14, 2026 | — |
| 4 | Insider transaction | Apr 2, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | Apr 1, 2026 | Mar 31, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Apr 1, 2026 | — |
| 10-K | Annual report | Mar 31, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 31, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure, Other events
|
Mar 30, 2026 | Mar 29, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 16, 2026 | Mar 16, 2026 |
| 3 | Initial insider ownership | Mar 16, 2026 | Mar 16, 2026 |
| 3 | Initial insider ownership | Mar 16, 2026 | Mar 16, 2026 |
| 3 | Initial insider ownership | Mar 16, 2026 | Mar 16, 2026 |
| 3 | Initial insider ownership | Mar 16, 2026 | Mar 16, 2026 |
| 3 | Initial insider ownership | Mar 16, 2026 | Mar 16, 2026 |
| 3 | Initial insider ownership | Mar 16, 2026 | Mar 16, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| 8-K |
Current report
Officer or director change
|
Dec 23, 2025 | Dec 17, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 28, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Nov 26, 2025 | — |
| 144 | Notice of proposed sale | Nov 24, 2025 | — |
| 144 | Notice of proposed sale | Nov 21, 2025 | — |
| 144 | Notice of proposed sale | Nov 18, 2025 | — |
| 10-Q | Quarterly report | Nov 12, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2025 | Nov 12, 2025 |
| 144 | Notice of proposed sale | Oct 1, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 16, 2025 | Sep 16, 2025 |
| EFFECT | Filing | Sep 12, 2025 | — |
| POS AM | Filing | Sep 10, 2025 | — |
| 10-Q | Quarterly report | Aug 13, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 13, 2025 | Aug 13, 2025 |
| 8-K |
Current report
Officer or director change
|
Jul 22, 2025 | Jul 22, 2025 |
| 8-K |
Current report
Agreement ended
|
Jul 21, 2025 | Jul 18, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 21, 2025 | — |
| F-6 POS | Filing | Jul 18, 2025 | — |
| 8-K |
Current report
Other events
|
Jul 17, 2025 | Jul 16, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Jul 9, 2025 | Jul 9, 2025 |
| EFFECT | Filing | Jun 26, 2025 | — |
| CORRESP | Letter to the SEC | Jun 24, 2025 | — |
| UPLOAD | Letter from the SEC | Jun 12, 2025 | — |
| 144 | Notice of proposed sale | Jun 11, 2025 | — |
| S-8 | Employee stock plan registration | Jun 10, 2025 | — |
| F-3 | Shelf registration (foreign issuer) | Jun 10, 2025 | — |
| 10-Q | Quarterly report | May 15, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 15, 2025 | May 15, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
May 14, 2025 | May 14, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
May 13, 2025 | May 13, 2025 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Apr 1, 2025 | Apr 1, 2025 |
| 10-K | Annual report | Mar 31, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 31, 2025 | Mar 31, 2025 |
| 6-K | Current report (foreign issuer) | Mar 28, 2025 | Mar 28, 2025 |
| 6-K | Current report (foreign issuer) | Dec 23, 2024 | Dec 10, 2024 |
| 6-K | Current report (foreign issuer) | Sep 6, 2024 | Sep 6, 2024 |
| 6-K | Current report (foreign issuer) | Sep 5, 2024 | Jun 30, 2024 |
| 6-K | Current report (foreign issuer) | Aug 2, 2024 | Aug 2, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Jul 1, 2024 | — |
| 6-K | Current report (foreign issuer) | Jun 12, 2024 | Jun 12, 2024 |
| 20-F | Annual report (foreign issuer) | Apr 16, 2024 | Dec 31, 2023 |
| 6-K | Current report (foreign issuer) | Apr 16, 2024 | Apr 16, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 27, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Feb 27, 2024 | — |
| SC 13D | Ownership over 5% (active) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| 6-K | Current report (foreign issuer) | Feb 12, 2024 | Feb 12, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 20, 2023 | — |
| 144 | Notice of proposed sale | Dec 18, 2023 | — |
| 144 | Notice of proposed sale | Dec 18, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Dec 14, 2023 | — |
| 144 | Notice of proposed sale | Dec 12, 2023 | — |
| 144 | Notice of proposed sale | Dec 12, 2023 | — |
| 6-K | Current report (foreign issuer) | Dec 12, 2023 | Dec 12, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 4, 2023 | — |
| 144 | Notice of proposed sale | Nov 27, 2023 | — |
| 144 | Notice of proposed sale | Nov 27, 2023 | — |
| 144 | Notice of proposed sale | Nov 21, 2023 | — |
| 144 | Notice of proposed sale | Nov 21, 2023 | — |
| 6-K | Current report (foreign issuer) | Nov 21, 2023 | Nov 21, 2023 |
| 6-K | Current report (foreign issuer) | Nov 1, 2023 | Nov 1, 2023 |
| 6-K | Current report (foreign issuer) | Oct 20, 2023 | Oct 20, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 4, 2023 | — |
| 6-K | Current report (foreign issuer) | Sep 12, 2023 | Jun 30, 2023 |
| 6-K | Current report (foreign issuer) | Sep 12, 2023 | Sep 12, 2023 |
| UPLOAD | Letter from the SEC | Aug 10, 2023 | — |
| CORRESP | Letter to the SEC | Jul 24, 2023 | — |
| 6-K | Current report (foreign issuer) | Jul 14, 2023 | Jul 14, 2023 |
| UPLOAD | Letter from the SEC | Jul 11, 2023 | — |
| 6-K | Current report (foreign issuer) | Jun 23, 2023 | Jun 23, 2023 |
| 6-K | Current report (foreign issuer) | Jun 5, 2023 | Jun 5, 2023 |
| 6-K | Current report (foreign issuer) | Jun 1, 2023 | Jun 1, 2023 |
| 6-K | Current report (foreign issuer) | Apr 11, 2023 | Apr 11, 2023 |
| 20-F | Annual report (foreign issuer) | Apr 11, 2023 | Dec 31, 2022 |
| 6-K | Current report (foreign issuer) | Mar 21, 2023 | Mar 21, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Feb 13, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| 6-K | Current report (foreign issuer) | Feb 9, 2023 | Feb 9, 2023 |
| 6-K | Current report (foreign issuer) | Feb 3, 2023 | Feb 2, 2023 |
| SC 13G | Ownership over 5% (passive) | Jan 3, 2023 | — |
| 6-K | Current report (foreign issuer) | Dec 30, 2022 | Dec 30, 2022 |
| 6-K | Current report (foreign issuer) | Dec 2, 2022 | Dec 2, 2022 |
| 6-K | Current report (foreign issuer) | Oct 4, 2022 | Oct 4, 2022 |
| 6-K | Current report (foreign issuer) | Sep 13, 2022 | Jun 30, 2022 |
| 6-K | Current report (foreign issuer) | Aug 30, 2022 | Aug 30, 2022 |
| 6-K | Current report (foreign issuer) | Aug 19, 2022 | Aug 19, 2022 |
| 6-K | Current report (foreign issuer) | Jul 11, 2022 | Jul 11, 2022 |
| EFFECT | Filing | Jul 6, 2022 | — |
| S-8 | Employee stock plan registration | Jul 1, 2022 | — |
| CORRESP | Letter to the SEC | Jul 1, 2022 | — |
| CORRESP | Letter to the SEC | Jun 17, 2022 | — |
| F-3/A | Filing | Jun 17, 2022 | — |
| 6-K | Current report (foreign issuer) | Jun 17, 2022 | Jun 17, 2022 |
| 6-K | Current report (foreign issuer) | Jun 10, 2022 | Jun 10, 2022 |
| UPLOAD | Letter from the SEC | Jun 3, 2022 | — |
| F-3/A | Filing | May 23, 2022 | — |
| CORRESP | Letter to the SEC | May 20, 2022 | — |
| 6-K | Current report (foreign issuer) | May 9, 2022 | May 9, 2022 |
| 6-K | Current report (foreign issuer) | May 5, 2022 | May 4, 2022 |
| 6-K | Current report (foreign issuer) | May 3, 2022 | May 3, 2022 |
| UPLOAD | Letter from the SEC | Apr 27, 2022 | — |
| F-3 | Shelf registration (foreign issuer) | Apr 15, 2022 | — |
| 6-K | Current report (foreign issuer) | Mar 31, 2022 | Mar 31, 2022 |
| 20-F | Annual report (foreign issuer) | Mar 31, 2022 | Dec 31, 2021 |
| 6-K | Current report (foreign issuer) | Mar 1, 2022 | Mar 1, 2022 |
| SC 13G | Ownership over 5% (passive) | Feb 25, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 25, 2022 | — |
| 6-K | Current report (foreign issuer) | Feb 16, 2022 | Feb 16, 2022 |
| SC 13G | Ownership over 5% (passive) | Feb 15, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 9, 2022 | — |
| 6-K | Current report (foreign issuer) | Jan 5, 2022 | Jan 5, 2022 |
| 6-K | Current report (foreign issuer) | Nov 22, 2021 | Nov 22, 2021 |
| 6-K | Current report (foreign issuer) | Nov 19, 2021 | Nov 19, 2021 |
| 6-K | Current report (foreign issuer) | Nov 19, 2021 | Nov 18, 2021 |
| 6-K | Current report (foreign issuer) | Sep 8, 2021 | Sep 8, 2021 |
| 6-K | Current report (foreign issuer) | Sep 2, 2021 | Sep 2, 2021 |
| 6-K | Current report (foreign issuer) | Aug 31, 2021 | Aug 31, 2021 |
| 6-K | Current report (foreign issuer) | Aug 27, 2021 | Aug 27, 2021 |
| 6-K | Current report (foreign issuer) | Jun 16, 2021 | Jun 16, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Jun 7, 2021 | — |
| 6-K | Current report (foreign issuer) | Jun 3, 2021 | Jun 3, 2021 |
| 6-K | Current report (foreign issuer) | May 17, 2021 | May 17, 2021 |
| 6-K | Current report (foreign issuer) | May 11, 2021 | May 11, 2021 |
| SC 13D | Ownership over 5% (active) | Mar 29, 2021 | — |
| S-8 | Employee stock plan registration | Mar 19, 2021 | — |
| 424B4 | Prospectus | Mar 19, 2021 | — |
| CERT | Filing | Mar 19, 2021 | — |
| EFFECT | Filing | Mar 18, 2021 | — |
| EFFECT | Filing | Mar 18, 2021 | — |
| F-1MEF | Filing | Mar 18, 2021 | — |
| F-1/A | Filing | Mar 18, 2021 | — |
| CORRESP | Letter to the SEC | Mar 17, 2021 | — |
| F-1/A | Filing | Mar 17, 2021 | — |
| UPLOAD | Letter from the SEC | Mar 16, 2021 | — |
| CORRESP | Letter to the SEC | Mar 16, 2021 | — |
| CORRESP | Letter to the SEC | Mar 16, 2021 | — |
| 8-A12B | Filing | Mar 12, 2021 | — |
| F-1/A | Filing | Mar 12, 2021 | — |
| F-6 | Filing | Mar 12, 2021 | — |
| CORRESP | Letter to the SEC | Mar 9, 2021 | — |
| CORRESP | Letter to the SEC | Mar 8, 2021 | — |
| UPLOAD | Letter from the SEC | Mar 5, 2021 | — |
| F-1 | Registration statement (foreign issuer) | Feb 26, 2021 | — |
| DRSLTR | Filing | Feb 16, 2021 | — |
| DRS/A | Filing | Feb 16, 2021 | — |
| UPLOAD | Letter from the SEC | Feb 10, 2021 | — |
| DRSLTR | Filing | Jan 26, 2021 | — |
| DRS/A | Filing | Jan 26, 2021 | — |
| UPLOAD | Letter from the SEC | Jan 13, 2021 | — |
| DRSLTR | Filing | Dec 17, 2020 | — |
| DRS | Filing | Dec 17, 2020 | — |
Showing 196 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
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- CNTB (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- Cayman Islands
- Headquarters
- San Diego, CA
- SEC filer status
- , Emerging growth company
- SEC CIK
- 1835268
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.