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Adaptimmune Therapeutics plc (ADAP) institutional ownership

Market cap$21M SectorHealthcare
Funds holding · Q1 2026
9
reported ADAP position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
0 buyers · 9 sellers

Adaptimmune Therapeutics plc (ADAP) price and institutional activity

Dates

Q1 2026

$0 bought by 0 investors
$0 sold by 9 investors
Empirical Finance, LLCRathbones Group PLC +7 more
Bought Sold Totals per quarter; hover a bar for the names.

Adaptimmune Therapeutics plc (ADAP) institutional activity · 9

Investor Type Est. change Change Δ Own Date
Empirical Finance, LLC · Exited
Change −800K Δ Own −100.0% Date Q1 2026
Empirical Finance, LLC Exited· Q1 2026 −800K −100.0% Q1 2026
Rathbones Group PLC · Exited
Change −433K Δ Own −100.0% Date Q1 2026
Rathbones Group PLC Exited· Q1 2026 −433K −100.0% Q1 2026
Xtx Topco Ltd · Exited
Change −354K Δ Own −100.0% Date Q1 2026
Xtx Topco Ltd Exited· Q1 2026 −354K −100.0% Q1 2026
Josh Arnold Investment Consultant, LLC · Exited
Change −20K Δ Own −100.0% Date Q1 2026
Josh Arnold Investment Consultant, LLC Exited· Q1 2026 −20K −100.0% Q1 2026
Simplex Trading, LLC · Exited
Change −19K Δ Own −100.0% Date Q1 2026
Simplex Trading, LLC Exited· Q1 2026 −19K −100.0% Q1 2026
Acadian Asset Management LLC · Exited
Change −17K Δ Own −100.0% Date Q1 2026
Acadian Asset Management LLC Exited· Q1 2026 −17K −100.0% Q1 2026
X-Square Capital, LLC · Exited
Change −11K Δ Own −100.0% Date Q1 2026
X-Square Capital, LLC Exited· Q1 2026 −11K −100.0% Q1 2026
Barclays PLC · Exited
Change −3K Δ Own −100.0% Date Q1 2026
Barclays PLC Exited· Q1 2026 −3K −100.0% Q1 2026
Td Waterhouse Canada Inc. · Exited
Change −14 Δ Own −100.0% Date Q1 2026
Td Waterhouse Canada Inc. Exited· Q1 2026 −14 −100.0% Q1 2026
Data through Q1 2026 · filed Jun 9, 2026
9 of 9

Famous investor activity in Adaptimmune Therapeutics plc (ADAP)

Adaptimmune Therapeutics plc (ADAP) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Wood Gavin · Officer Sell −$960
Price $0.01 Qty −96K Owned 0 Trade date Sep 2, 2025 Filed date Sep 3, 2025
Wood Gavin Officer Sell $0.01 −96K −$960 0 Sep 2, 2025 Sep 3, 2025
Bertrand William C. Jr · Officer Sell −$2K
Price $0.01 Qty −207K Owned 986K Trade date Aug 28, 2025 Filed date Aug 29, 2025
Bertrand William C. Jr Officer Sell $0.01 −207K −$2K 986K Aug 28, 2025 Aug 29, 2025
Behbahani Ali · Director Sell −$147K
Price $0.01 Qty −14.7M Owned 0 Trade date Aug 18, 2025 Filed date Aug 19, 2025
Behbahani Ali Director Sell $0.01 −14.7M −$147K 0 Aug 18, 2025 Aug 19, 2025
Behbahani Ali · Director Sell −$48K
Price $0.01 Qty −4.8M Owned 14.7M Trade date Aug 15, 2025 Filed date Aug 19, 2025
Behbahani Ali Director Sell $0.01 −4.8M −$48K 14.7M Aug 15, 2025 Aug 19, 2025
Ecor1 Capital, LLC · 10% Owner Sell −$2.7M
Price $0.10 Qty −27.4M Owned 100.4M Trade date Jul 30, 2025 Filed date Jul 30, 2025
Ecor1 Capital, LLC 10% Owner Sell $0.10 −27.4M −$2.7M 100.4M Jul 30, 2025 Jul 30, 2025
Ecor1 Capital, LLC · 10% Owner Sell −$269K
Price $0.10 Qty −2.7M Owned 127.8M Trade date Jul 29, 2025 Filed date Jul 30, 2025
Ecor1 Capital, LLC 10% Owner Sell $0.10 −2.7M −$269K 127.8M Jul 29, 2025 Jul 30, 2025
Ecor1 Capital, LLC · 10% Owner Sell −$3.7M
Price $0.11 Qty −33.9M Owned 130.5M Trade date Jul 28, 2025 Filed date Jul 30, 2025
Ecor1 Capital, LLC 10% Owner Sell $0.11 −33.9M −$3.7M 130.5M Jul 28, 2025 Jul 30, 2025
7 of 7

Adaptimmune Therapeutics plc (ADAP) activist and large shareholders

Dates
No Schedule 13D or 13G filing is available for ADAP in this range.

Adaptimmune Therapeutics plc (ADAP) ownership FAQ

Who owns ADAP?

9 reporting institutions disclosed ADAP position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.