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Adaptimmune Therapeutics PLC — Investor Relations & Filings

Ticker · ADAP ISIN · US00653A1079 LEI · 549300UUNWK8TRT5EW12 US Manufacturing
Open in API
Filings indexed 807 across all filing types
Latest filing 2026-02-17 Major Shareholding Noti…
Country GB United Kingdom
Listing US ADAP

About Adaptimmune Therapeutics PLC

https://www.adaptimmune.com/

Adaptimmune Therapeutics is a commercial-stage biopharmaceutical company specializing in the development of novel T-cell receptor (TCR) T-cell therapies for cancer. The company utilizes a proprietary platform to engineer a patient's own T-cells to recognize and fight solid tumors. Its first FDA-approved therapy, Tecelra (afami-cel), is a treatment for advanced synovial sarcoma. Adaptimmune is advancing a robust pipeline of cell therapies, including preclinical programs targeting PRAME and CD70, as well as an allogeneic platform. The company's mission is to deliver transformative, potentially single-infusion treatments to reshape cancer care for patients with difficult-to-treat solid tumors.

Recent filings

Filing Released Lang Actions
SCHEDULE 13G Filing
Major Shareholding Notification
2026-02-17 English
Regulatory Filings 2025
Regulatory Filings
2025-11-17 English
Major Shareholding Notification 2025
Major Shareholding Notification
2025-11-14 English
Regulatory Filings 2025
Regulatory Filings Classification · 95% confidence The document is a Form 424B3 filed pursuant to Rule 424(b)(3), which is a prospectus supplement related to securities offerings. It specifically relates to American Depositary Receipts (ADRs) for Adaptimmune Therapeutics plc, detailing the terms and conditions of the ADRs, deposit agreements, transfer, withdrawal, and other administrative provisions. There is no indication of financial results, management discussion, voting results, or other report types. This is a regulatory filing related to securities registration and depositary receipt terms, not a financial report or announcement of voting or management changes. Therefore, the most appropriate classification is Regulatory Filings (RNS), which is the fallback category for miscellaneous regulatory documents that do not fit other specific categories.
2025-11-13 English
15-12G
Regulatory Filings Classification · 100% confidence The document is a Form 15 filed with the SEC, which is a certification and notice of termination of registration or suspension of duty to file reports under the Securities Exchange Act of 1934. It is not a financial report, earnings release, or management discussion. The document is a regulatory filing notifying the SEC and the public about the termination of reporting obligations. It is short (1901 characters) and contains certification by the CEO. This fits the definition of a Regulatory Filing (RNS) as it is a compliance document and does not contain financial statements or detailed report content.
2025-11-13 English
S-8 POS
Transaction in Own Shares Classification · 95% confidence The document is a Post-Effective Amendment to Form S-8 Registration Statements filed with the SEC. It details the deregistration of unsold or unissued shares under multiple previously filed Form S-8 registration statements. The document references the voluntary delisting of the company's American Depositary Shares from Nasdaq and deregistration from reporting requirements under the Exchange Act. The content is focused on share registration and deregistration, share option schemes, and termination of offerings under these registration statements. This is a regulatory filing related to share registration and deregistration, not a financial report, earnings release, or management discussion. It is not a report publication announcement since it contains substantive information about the deregistration and delisting process. The document fits best under the category of Transaction in Own Shares (POS), as it involves deregistration of shares and termination of share offerings, which is related to changes in the company's share capital and share issuance status.
2025-10-28 English

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