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Filing Details

Accession Number:: 0000935836-25-000476
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2025-07-30 18:20:32
Reporting Period:: 2025-07-28

Filing Date:: 2025-07-30
Accepted Time:: 2025-07-30 18:20:32
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1621227	Adaptimmune Therapeutics Plc	ADAP	()	DE

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1587114	Ecor1 Capital, Llc	357 Tehama Street #3 San Francisco CA 94103		No	No	Yes	No

Transaction Summary

Sold:	64,052,538 shares	Avg. Price: $0.11	Total Value: $6,890,235.51
Number of Shares After Transactions:	100,371,882 shares

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Ordinary Shares	Disposition	2025-07-28	33,931,740	$0.11	130,492,680	No	4	S	Indirect	See Note
Ordinary Shares	Disposition	2025-07-29	2,687,460	$0.10	127,805,220	No	4	S	Indirect	See Note
Ordinary Shares	Disposition	2025-07-30	27,433,338	$0.10	100,371,882	No	4	S	Indirect	See Note

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	See Note
No	4	S	Indirect	See Note
No	4	S	Indirect	See Note

Footnotes

These Ordinary Shares are held through American Depositary Shares ("ADS") of the Issuer. Each ADS represents 6 Ordinary Shares.
The reporting persons are EcoR1 Capital, LLC ("Ecor1"), Oleg Nodelman and EcoR1 Capital Fund Qualified, L.P. ("Qualified Fund"). EcoR1 is the general partner and investment adviser of private funds, including Qualified Fund (the "Fund"). Mr. Nodelman is the manager and controlling owner of EcoR1. EcoR1 is filing this Form 4 for itself, Mr. Nodelman and Qualified Fund. The filers are filing this Form 4 jointly, but not as a group, and each expressly disclaims membership in a group within the meaning of Rule 13d-5(b) under the Securities Exchange Act of 1934. The Funds hold these securities directly for the benefit of their investors. EcoR1 may be deemed to indirectly beneficially own them as the investment adviser to the Funds. Mr. Nodelman may be deemed to indirectly beneficially own them as the control person of EcoR1. The filers disclaim beneficial ownership of the securities except to the extent of their respective pecuniary interests therein.
The reporting persons sold 5,655,290 ADSs representing 33,931,740 Ordinary Shares. Qualified Fund sold 5,281,476 of those ADSs, representing 31,688,856 Ordinary Shares.
The price reported in Column 4 is the price per ADS sold by the reporting persons. This price is a weighted average price. These ADSs were sold in multiple transactions at prices ranging from $0.1086 to $0.1184, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission upon request, full information regarding the number of ADSs sold at each separate price within the ranges set forth in this footnote.
After this transaction, the reporting persons beneficially owned 21,748,780 ADSs, including 20,569,634 ADS held by Qualified Fund representing 123,417,804 Ordinary Shares.
The reporting persons sold 447,910 ADSs representing 2,687,460 Ordinary Shares. Qualified Fund sold 418,303 of those ADSs, representing 2,509,818 Ordinary Shares.
The price reported in Column 4 is the price per ADS sold by the reporting persons.
After this transaction, the reporting persons beneficially owned 21,300,870 ADSs, including 20,151,331 ADSs held by Qualified Fund representing 120,907,986 Ordinary Shares.
The reporting persons sold 4,572,223 ADSs representing 27,433,338 Ordinary Shares. Qualified Fund sold 4,270,000 of those ADSs, representing 25,620,000 Ordinary Shares.
After this transaction, the reporting persons beneficially owned 16,728,647 ADSs, including 15,881,331 ADSs held by Qualified Fund representing 95,287,986 Ordinary Shares.