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 |
|---|---|---|---|
| RW | Filing | Apr 22, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| EFFECT | Filing | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| 424B3 | Prospectus | Nov 13, 2025 | — |
| 15-12G | Deregistration | Nov 13, 2025 | — |
| S-8 POS | Filing | Oct 28, 2025 | — |
| S-8 POS | Filing | Oct 28, 2025 | — |
| S-8 POS | Filing | Oct 28, 2025 | — |
| POS AM | Filing | Oct 28, 2025 | — |
| 25 | Form 25 | Oct 28, 2025 | — |
| 8-K |
Current report
Listing notice, Regulation FD disclosure
|
Oct 20, 2025 | Oct 15, 2025 |
| 3 | Initial insider ownership | Oct 8, 2025 | Sep 10, 2025 |
| 8-K |
Current report
Listing notice
|
Sep 26, 2025 | Sep 22, 2025 |
| 8-K |
Current report
Listing notice
|
Sep 12, 2025 | Sep 11, 2025 |
| 8-K |
Current report
Officer or director change
|
Sep 8, 2025 | Sep 6, 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 | — |
| 8-K |
Current report
Officer or director change
|
Aug 29, 2025 | 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 | — |
| 8-K |
Current report
Officer or director change
|
Aug 15, 2025 | Aug 15, 2025 |
| 144 | Notice of proposed sale | Aug 15, 2025 | — |
| 144 | Notice of proposed sale | Aug 15, 2025 | — |
| 8-K |
Current report
Listing notice
|
Aug 14, 2025 | Aug 14, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 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
|
Aug 7, 2025 | Aug 7, 2025 |
| 8-K |
Current report
Agreement ended, Acquisition or sale of assets
|
Jul 31, 2025 | Jul 31, 2025 |
| 4 | Insider transaction | Jul 30, 2025 | Jul 28, 2025 |
| 8-K |
Current report
Material agreement, Exit or restructuring costs, Officer or director change, Regulation FD disclosure
|
Jul 28, 2025 | Jul 27, 2025 |
| 8-K |
Current report
Other events
|
Jul 17, 2025 | Jul 16, 2025 |
| 8-K |
Current report
Shareholder vote results
|
May 29, 2025 | May 29, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| 10-Q | Quarterly report | May 13, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 13, 2025 | May 13, 2025 |
| 8-K |
Current report
Listing notice
|
May 1, 2025 | May 1, 2025 |
| ARS | Annual report to shareholders | Apr 25, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Apr 25, 2025 | May 29, 2025 |
| S-3 | Shelf registration | Apr 18, 2025 | — |
| PRE 14A | Preliminary proxy statement | Apr 15, 2025 | May 29, 2025 |
| 8-K |
Current report
Officer or director change
|
Apr 14, 2025 | Apr 14, 2025 |
| 10-K | Annual report | Mar 24, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Material agreement
|
Mar 24, 2025 | Mar 24, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 20, 2025 | Mar 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 |
| 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 | — |
| 8-K |
Current report
Officer or director change, Other events
|
Dec 19, 2024 | Dec 18, 2024 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Dec 5, 2024 | — |
| 10-Q | Quarterly report | Nov 13, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations, Exit or restructuring costs
|
Nov 13, 2024 | Nov 13, 2024 |
| 8-K |
Current report
Other events
|
Nov 13, 2024 | Nov 13, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 13, 2024 | — |
| 8-K |
Current report
Listing notice
|
Nov 1, 2024 | Nov 1, 2024 |
| 8-K |
Current report
Material agreement
|
Sep 23, 2024 | Sep 23, 2024 |
| 10-Q | Quarterly report | Aug 12, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2024 | Aug 12, 2024 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Aug 2, 2024 | Aug 1, 2024 |
| 8-K |
Current report
Officer or director change
|
Jul 16, 2024 | Jul 16, 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 |
| 8-K |
Current report
Officer or director change
|
Jun 11, 2024 | Jun 11, 2024 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
May 30, 2024 | May 30, 2024 |
| 10-Q | Quarterly report | May 15, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 15, 2024 | May 15, 2024 |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure
|
May 15, 2024 | May 14, 2024 |
| 8-K |
Current report
Shareholder vote results
|
May 14, 2024 | May 14, 2024 |
| ARS | Annual report to shareholders | Apr 22, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Agreement ended
|
Apr 12, 2024 | Apr 10, 2024 |
| DEF 14A | Proxy statement | Apr 11, 2024 | May 14, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Apr 2, 2024 | — |
| PRE 14A | Preliminary proxy statement | Apr 1, 2024 | May 14, 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 |
| 10-K | Annual report | Mar 6, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 6, 2024 | Mar 6, 2024 |
| 8-K |
Current report
Officer or director change
|
Feb 27, 2024 | Feb 26, 2024 |
| 8-K |
Current report
Listing notice
|
Feb 16, 2024 | Feb 16, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| 8-K |
Current report
Other events
|
Jan 31, 2024 | Jan 31, 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 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 4, 2024 | Jan 4, 2024 |
| 8-K |
Current report
Other events
|
Dec 6, 2023 | Dec 6, 2023 |
| S-8 | Employee stock plan registration | Nov 30, 2023 | — |
| 8-K |
Current report
Other events
|
Nov 14, 2023 | Nov 14, 2023 |
| 10-Q | Quarterly report | Nov 8, 2023 | Sep 30, 2023 |
| SC 13G | Ownership over 5% (passive) | Nov 8, 2023 | — |
| 8-K |
Current report
Results of operations
|
Nov 8, 2023 | Nov 8, 2023 |
| 8-K |
Current report
Officer or director change
|
Nov 3, 2023 | Nov 1, 2023 |
| 3 | Initial insider ownership | Nov 1, 2023 | Nov 1, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 31, 2023 | Oct 31, 2023 |
| 4 | Insider transaction | Sep 1, 2023 | Sep 1, 2023 |
| 8-K |
Current report
Listing notice
|
Aug 31, 2023 | Aug 31, 2023 |
| 8-K/A | Amended current report | Aug 10, 2023 | Jun 1, 2023 |
| 10-Q | Quarterly report | Aug 9, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 9, 2023 | Aug 9, 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 |
| S-8 POS | Filing | Jun 29, 2023 | — |
| S-8 POS | Filing | Jun 29, 2023 | — |
| 8-K |
Current report
Officer or director change
|
Jun 29, 2023 | Jun 29, 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 |
| 8-K |
Current report
Acquisition or sale of assets, Officer or director change, Regulation FD disclosure
|
Jun 1, 2023 | Jun 1, 2023 |
| 425 | Filing | May 30, 2023 | — |
| 8-K |
Current report
Shareholder vote results
|
May 30, 2023 | May 30, 2023 |
| 425 | Filing | May 22, 2023 | — |
| 8-K |
Current report
Other events
|
May 22, 2023 | May 22, 2023 |
| 8-K |
Current report
Shareholder vote results
|
May 16, 2023 | May 16, 2023 |
| 10-Q | Quarterly report | May 12, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 12, 2023 | May 12, 2023 |
| EFFECT | Filing | Apr 20, 2023 | — |
| 424B3 | Prospectus | Apr 20, 2023 | — |
| CORRESP | Letter to the SEC | Apr 18, 2023 | — |
| S-4/A | Filing | Apr 18, 2023 | — |
| DEF 14A | Proxy statement | Apr 13, 2023 | — |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Apr 11, 2023 | Apr 6, 2023 |
| UPLOAD | Letter from the SEC | Apr 6, 2023 | — |
| S-4 | Registration for a merger or exchange | Apr 5, 2023 | — |
| PRE 14A | Preliminary proxy statement | Apr 3, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Mar 30, 2023 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 10, 2023 | Mar 10, 2023 |
| 425 | Filing | Mar 9, 2023 | — |
| 425 | Filing | Mar 9, 2023 | — |
| 10-K | Annual report | Mar 6, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Agreement ended, Results of operations, Officer or director change
|
Mar 6, 2023 | Mar 2, 2023 |
| 425 | Filing | Mar 6, 2023 | — |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Mar 6, 2023 | Mar 5, 2023 |
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.