Adaptimmune Therapeutics PLC SEC filings ADAPY
Adaptimmune Therapeutics PLC has 808 filings in SEC EDGAR's recent list, going back to Oct 2, 2014. Its latest annual report, Form ARS, was filed on Apr 25, 2025 for the period ended Dec 31, 2024. The latest quarterly report (Form 10-Q) was filed on Aug 13, 2025, covering the quarter ended Jun 30, 2025. The most recent current report (Form 8-K) was filed on Oct 20, 2025 (listing notice, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| 3 | Initial insider ownership | Oct 8, 2025 | Sep 10, 2025 |
| 4 | Insider transaction | Sep 3, 2025 | Sep 2, 2025 |
| 144 | Notice of proposed sale | Sep 2, 2025 | — |
| 4 | Insider transaction | Aug 29, 2025 | Aug 28, 2025 |
| 144 | Notice of proposed sale | Aug 29, 2025 | — |
| 4 | Insider transaction | Aug 19, 2025 | Aug 15, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Aug 19, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 19, 2025 | — |
| 144 | Notice of proposed sale | Aug 15, 2025 | — |
| 144 | Notice of proposed sale | Aug 15, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2025 | — |
| 4 | Insider transaction | Jul 30, 2025 | Jul 28, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| 4 | Insider transaction | Feb 20, 2025 | Feb 20, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 20, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 20, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 20, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 20, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 20, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 12, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 11, 2025 | — |
| 4 | Insider transaction | Jan 17, 2025 | Jan 17, 2025 |
| 4 | Insider transaction | Jan 17, 2025 | Jan 17, 2025 |
| 4 | Insider transaction | Jan 17, 2025 | Jan 17, 2025 |
| 4 | Insider transaction | Jan 17, 2025 | Jan 17, 2025 |
| 144 | Notice of proposed sale | Jan 17, 2025 | — |
| 144 | Notice of proposed sale | Jan 17, 2025 | — |
| 144 | Notice of proposed sale | Jan 17, 2025 | — |
| 144 | Notice of proposed sale | Jan 17, 2025 | — |
| 4 | Insider transaction | Jan 15, 2025 | Jan 13, 2025 |
| 4 | Insider transaction | Jan 15, 2025 | Jan 15, 2025 |
| 4 | Insider transaction | Jan 15, 2025 | Jan 13, 2025 |
| 4 | Insider transaction | Jan 15, 2025 | Jan 13, 2025 |
| 4 | Insider transaction | Jan 15, 2025 | Jan 13, 2025 |
| 144 | Notice of proposed sale | Jan 15, 2025 | — |
| 144 | Notice of proposed sale | Jan 15, 2025 | — |
| 144 | Notice of proposed sale | Jan 15, 2025 | — |
| 144 | Notice of proposed sale | Jan 15, 2025 | — |
| 144 | Notice of proposed sale | Jan 15, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 8, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Dec 5, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 13, 2024 | — |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 18, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Apr 2, 2024 | — |
| 3 | Initial insider ownership | Mar 26, 2024 | Mar 8, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Mar 26, 2024 | — |
| 4 | Insider transaction | Mar 18, 2024 | Mar 18, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Jan 30, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 29, 2024 | — |
| 4 | Insider transaction | Jan 17, 2024 | Jan 16, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 16, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 16, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 16, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 12, 2024 | Jan 11, 2024 |
| 4 | Insider transaction | Jan 12, 2024 | Jan 11, 2024 |
| 4 | Insider transaction | Jan 12, 2024 | Jan 11, 2024 |
| 4 | Insider transaction | Jan 12, 2024 | Jan 11, 2024 |
| SC 13G | Ownership over 5% (passive) | Nov 8, 2023 | — |
| 3 | Initial insider ownership | Nov 1, 2023 | Nov 1, 2023 |
| 4 | Insider transaction | Sep 1, 2023 | Sep 1, 2023 |
| 4 | Insider transaction | Aug 1, 2023 | Aug 1, 2023 |
| 4 | Insider transaction | Jul 10, 2023 | Jul 10, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 10, 2023 | — |
| 4 | Insider transaction | Jul 5, 2023 | Jul 5, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 5, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jul 5, 2023 |
| 4 | Insider transaction | Jul 3, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 3, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 3, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 3, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 3, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 3, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 3, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jul 3, 2023 | Jul 3, 2023 |
| 4 | Insider transaction | Jun 27, 2023 | Jun 27, 2023 |
| 4 | Insider transaction | Jun 1, 2023 | Jun 1, 2023 |
| 3 | Initial insider ownership | Jun 1, 2023 | Jun 1, 2023 |
| 3 | Initial insider ownership | Jun 1, 2023 | Jun 1, 2023 |
| 3 | Initial insider ownership | Jun 1, 2023 | Jun 1, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 30, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2023 | — |
| 4 | Insider transaction | Jan 31, 2023 | Jan 31, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 18, 2023 | — |
| 4 | Insider transaction | Jan 17, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 17, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 17, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 17, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 17, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 17, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 17, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 17, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 17, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 17, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 17, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 17, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 12, 2023 | Jan 11, 2023 |
| 4 | Insider transaction | Jan 12, 2023 | Jan 11, 2023 |
| 4 | Insider transaction | Jan 12, 2023 | Jan 11, 2023 |
| 4 | Insider transaction | Jan 12, 2023 | Jan 11, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 4, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 4, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 4, 2023 |
| 4 | Insider transaction | Jan 4, 2023 | Jan 4, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Dec 2, 2022 | — |
| 4 | Insider transaction | Sep 1, 2022 | Sep 1, 2022 |
| 4 | Insider transaction | Aug 1, 2022 | Aug 1, 2022 |
| 4 | Insider transaction | Aug 1, 2022 | Aug 1, 2022 |
| 4 | Insider transaction | Jul 5, 2022 | Jul 5, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jul 1, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | Jun 27, 2022 | Jun 27, 2022 |
| 4 | Insider transaction | May 23, 2022 | May 20, 2022 |
| SC 13G | Ownership over 5% (passive) | May 9, 2022 | — |
| 4 | Insider transaction | May 4, 2022 | May 4, 2022 |
| 3 | Initial insider ownership | May 4, 2022 | May 4, 2022 |
| 4 | Insider transaction | Jan 31, 2022 | Jan 31, 2022 |
| 3 | Initial insider ownership | Jan 31, 2022 | Jan 31, 2022 |
| 4 | Insider transaction | Jan 18, 2022 | Jan 18, 2022 |
| 4 | Insider transaction | Jan 18, 2022 | Jan 18, 2022 |
| 4 | Insider transaction | Jan 18, 2022 | Jan 18, 2022 |
| 4 | Insider transaction | Jan 18, 2022 | Jan 18, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 18, 2022 | — |
| 4 | Insider transaction | Jan 13, 2022 | Jan 12, 2022 |
| 4 | Insider transaction | Jan 13, 2022 | Jan 12, 2022 |
| 4 | Insider transaction | Jan 13, 2022 | Jan 12, 2022 |
| 4 | Insider transaction | Jan 13, 2022 | Jan 11, 2022 |
| 4 | Insider transaction | Jan 13, 2022 | Jan 11, 2022 |
| 4 | Insider transaction | Jan 13, 2022 | Jan 12, 2022 |
| 4 | Insider transaction | Jan 13, 2022 | Jan 11, 2022 |
| 4 | Insider transaction | Jan 13, 2022 | Jan 11, 2022 |
| 4 | Insider transaction | Jan 13, 2022 | Jan 12, 2022 |
| 4 | Insider transaction | Jan 13, 2022 | Jan 12, 2022 |
| 4 | Insider transaction | Jan 5, 2022 | Jan 4, 2022 |
| 4 | Insider transaction | Jan 5, 2022 | Jan 4, 2022 |
| 4 | Insider transaction | Jan 5, 2022 | Jan 4, 2022 |
| 4 | Insider transaction | Jan 5, 2022 | Jan 4, 2022 |
| 4 | Insider transaction | Sep 1, 2021 | Sep 1, 2021 |
| 4 | Insider transaction | Aug 2, 2021 | Aug 2, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jul 2, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jul 2, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jul 2, 2021 | Jul 1, 2021 |
| 4 | Insider transaction | Jun 28, 2021 | Jun 28, 2021 |
| 4 | Insider transaction | Jun 3, 2021 | Jun 1, 2021 |
| 4 | Insider transaction | Mar 3, 2021 | Mar 3, 2021 |
| SC 13G | Ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Jan 28, 2021 | — |
| 4 | Insider transaction | Jan 19, 2021 | Jan 19, 2021 |
| 4 | Insider transaction | Jan 19, 2021 | Jan 19, 2021 |
| 4 | Insider transaction | Jan 19, 2021 | Jan 19, 2021 |
| 4 | Insider transaction | Jan 12, 2021 | Jan 12, 2021 |
| 4 | Insider transaction | Jan 12, 2021 | Jan 12, 2021 |
| 4 | Insider transaction | Jan 12, 2021 | Jan 12, 2021 |
| 4 | Insider transaction | Jan 12, 2021 | Jan 12, 2021 |
| 4 | Insider transaction | Jan 11, 2021 | Jan 11, 2021 |
| 4 | Insider transaction | Jan 11, 2021 | Jan 11, 2021 |
| 4 | Insider transaction | Jan 11, 2021 | Jan 11, 2021 |
| 4 | Insider transaction | Jan 11, 2021 | Jan 11, 2021 |
| 4 | Insider transaction | Jan 11, 2021 | Jan 11, 2021 |
| 4 | Insider transaction | Jan 11, 2021 | Jan 11, 2021 |
| 4 | Insider transaction | Jan 5, 2021 | Jan 4, 2021 |
| 4 | Insider transaction | Jan 5, 2021 | Jan 4, 2021 |
| 4 | Insider transaction | Jan 5, 2021 | Jan 4, 2021 |
Showing 200 filings, the most recent 200. 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
- Biological Products, (No Diagnostic Substances) (SIC 2836)
- Listed as
- ADAPY (OTC)
- Fiscal year ends
- December 31
- Incorporated in
- United Kingdom
- Headquarters
- Abingdon, Oxfordshire
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1621227
- Former names
- Adaptimmune Ltd (until Mar 17, 2015)
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All 182 Biological Products, (No Diagnostic Substances) companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.