Key facts
- This page summarizes EcoR1 Capital, LLC's Form 4 filing for Adaptimmune Therapeutics PLC (ADAP).
- 3 reported transactions and 0 derivative rows are listed below.
- Accepted by SEC: 30 Jul 2025, 18:20.
EcoR1 Capital, LLC - 28 Jul 2025 Form 4 Insider Report for Adaptimmune Therapeutics PLC (ADAP)
- Reporting relationship
- 10%+ Owner
- Issuer ticker
- ADAP
- Reported as of
- 28 Jul 2025
- Net transaction value
- -$6,890,236
- SEC form
- 4
- Accepted by SEC
- 30 Jul 2025, 18:20:32 UTC
- Prior SEC filing
- 27 Jun 2025
- Next SEC filing
- 08 Jan 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Oleg Nodelman
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
EcoR1 Capital, LLC filed Form 4 for Adaptimmune Therapeutics PLC (ADAP) on 30 Jul 2025.
Change
- Previous filing in this sequence was filed on 27 Jun 2025.
- Current net transaction value: -$6,890,236.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001587114
Primary reporting owner
EcoR1 Capital, LLC
- Relationship
- 10%+ Owner
- Address
- 357 TEHAMA STREET #3, SAN FRANCISCO
- Signature
- /s/ Oleg Nodelman
- Signature date
- 30 Jul 2025
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
ADAP
transaction
Ordinary Shares
Sale
- Transaction value
- $3,817,321
- Shares
- -33,931,740
- Change %
- -21%
- Price
- $0.1125
- Shares after
- 130,492,680
- Date
- 28 Jul 2025
- Ownership
- See Note
- Footnotes
- F1, F2, F3, F4, F5
ADAP
transaction
Ordinary Shares
Sale
- Transaction value
- $271,971
- Shares
- -2,687,460
- Change %
- -2.1%
- Price
- $0.1012
- Shares after
- 127,805,220
- Date
- 29 Jul 2025
- Ownership
- See Note
- Footnotes
- F1, F2, F6, F7, F8
ADAP
transaction
Ordinary Shares
Sale
- Transaction value
- $2,800,944
- Shares
- -27,433,338
- Change %
- -21%
- Price
- $0.1021
- Shares after
- 100,371,882
- Date
- 30 Jul 2025
- Ownership
- See Note
- Footnotes
- F1, F2, F7, F9, F10
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Section 16 status
EcoR1 Capital, LLC is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.
Explanation of responses 10 footnotes
Footnote F1
These Ordinary Shares are held through American Depositary Shares ("ADS") of the Issuer. Each ADS represents 6 Ordinary Shares.
Footnote F2
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.
Footnote F3
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.
Footnote F4
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.
Footnote F5
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.
Footnote F6
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.
Footnote F7
The price reported in Column 4 is the price per ADS sold by the reporting persons.
Footnote F8
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.
Footnote F9
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.
Footnote F10
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.