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.

Adaptimmune Therapeutics PLC SEC filings
Form Description Filed Period
RW Filing Apr 22, 2026 —
EFFECT Filing Nov 14, 2025 —
15-12G Deregistration Nov 13, 2025 —
25 Form 25 Oct 28, 2025 —
425 Filing May 30, 2023 —
425 Filing May 22, 2023 —
EFFECT Filing Apr 20, 2023 —
CORRESP Letter to the SEC Apr 18, 2023 —
UPLOAD Letter from the SEC Apr 6, 2023 —
425 Filing Mar 9, 2023 —
425 Filing Mar 9, 2023 —
425 Filing Mar 6, 2023 —
EFFECT Filing Apr 22, 2022 —
CORRESP Letter to the SEC Apr 21, 2022 —
UPLOAD Letter from the SEC Apr 15, 2022 —
NT 10-K Filing Mar 1, 2022 Dec 31, 2021
CT ORDER Filing Nov 4, 2020 —
EFFECT Filing Sep 10, 2019 —
CORRESP Letter to the SEC Sep 6, 2019 —
UPLOAD Letter from the SEC Sep 6, 2019 —
UPLOAD Letter from the SEC Dec 20, 2018 —
CORRESP Letter to the SEC Dec 3, 2018 —
UPLOAD Letter from the SEC Nov 16, 2018 —
CORRESP Letter to the SEC Oct 18, 2018 —
CORRESP Letter to the SEC Oct 3, 2018 —
UPLOAD Letter from the SEC Oct 1, 2018 —
CT ORDER Filing Sep 4, 2018 —
CT ORDER Filing Apr 30, 2018 —
CT ORDER Filing Nov 28, 2017 —
CT ORDER Filing May 15, 2017 —
CT ORDER Filing Apr 20, 2017 —
EFFECT Filing Sep 12, 2016 —
CORRESP Letter to the SEC Sep 8, 2016 —
UPLOAD Letter from the SEC Sep 6, 2016 —
CORRESP Letter to the SEC Sep 6, 2016 —
UPLOAD Letter from the SEC Sep 2, 2016 —
CORRESP Letter to the SEC Aug 16, 2016 —
CT ORDER Filing Aug 16, 2016 —
CORRESP Letter to the SEC Aug 10, 2016 —
UPLOAD Letter from the SEC Aug 8, 2016 —
UPLOAD Letter from the SEC Aug 5, 2016 —
CT ORDER Filing Mar 28, 2016 —
EFFECT Filing May 6, 2015 —
CT ORDER Filing May 6, 2015 —
CERTNAS Auto-generated paper document May 6, 2015 —
EFFECT Filing May 5, 2015 —
CORRESP Letter to the SEC May 1, 2015 —
CORRESP Letter to the SEC May 1, 2015 —
8-A12B Filing Apr 30, 2015 —
CORRESP Letter to the SEC Apr 27, 2015 —
CORRESP Letter to the SEC Apr 22, 2015 —
CORRESP Letter to the SEC Apr 17, 2015 —
UPLOAD Letter from the SEC Apr 17, 2015 —
CORRESP Letter to the SEC Apr 6, 2015 —
UPLOAD Letter from the SEC Apr 1, 2015 —
DRSLTR Filing Mar 17, 2015 —
DRS/A Filing Mar 17, 2015 —
UPLOAD Letter from the SEC Mar 4, 2015 —
DRS Filing Feb 5, 2015 —
D Filing Oct 2, 2014 —

Showing 60 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.

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)

Other Biological Products, (No Diagnostic Substances) companies

Source: SEC EDGAR filings. This is company-reported data, not investment advice.