Per Business Quant data, Adaptimmune Therapeutics insiders hold 101.36Mn shares in total based on their latest Form 4 filings, unchanged from 101.36Mn shares at the end of Q2 2026 and down 1.81% from 103.23Mn shares at the end of Q3 2025.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Capital, Llc Ecor1 | TenPercentOwner | 0 | 100,371,882 | 100,371,882 | 98.9% | 30 Jul, 2025 |
| 2 | William C Jr Bertrand | Chief Operating Officer | 993,862 | 0 | 993,862 | 1.0% | 29 Aug, 2025 |
| 3 | Garry E Menzel | Director | 75,056 | 0 | 75,056 | 0.1% | 10 Jul, 2023 |
| 4 | Adrian Rawcliffe | Chief Executive Officer | 44,327 | 0 | 44,327 | 0.0% | 17 Jan, 2025 |
| 5 | Cintia Piccina | Chief Commercial Officer | 18,421 | 0 | 18,421 | 0.0% | 15 Jan, 2025 |
| 6 | John Lunger | Chief Patient Supply Officer | 7,510 | 0 | 7,510 | 0.0% | 17 Jan, 2025 |
| 7 | Elliot Norry | Chief Medical Officer | 7,510 | 0 | 7,510 | 0.0% | 17 Jan, 2025 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 02 Sep, 2025 | Gavin Wood | Chief Financial Officer | Disposed S | 96,000 | $0.01 | $950 | 0 | Direct |
| 28 Aug, 2025 | William C Jr Bertrand | Chief Operating Officer | Disposed S | 207,000 | $0.01 | $2.09K | 986,352 | Direct |
| 15 Aug, 2025 | Ali Behbahani | Director | Disposed S | 4,828,206 | $0.01 | $53.11K | 14,671,794 | Indirect |
| 18 Aug, 2025 | Ali Behbahani | Director | Disposed S | 14,671,794 | $0.01 | $176.06K | 0 | Indirect |
| 28 Jul, 2025 | Capital, Llc Ecor1 | TenPercentOwner | Disposed S | 33,931,740 | $0.11 | $3.82Mn | 130,492,680 | Indirect |
| 29 Jul, 2025 | Capital, Llc Ecor1 | TenPercentOwner | Disposed S | 2,687,460 | $0.10 | $271.97K | 127,805,220 | Indirect |
| 30 Jul, 2025 | Capital, Llc Ecor1 | TenPercentOwner | Disposed S | 27,433,338 | $0.10 | $2.80Mn | 100,371,882 | Indirect |
| 20 Feb, 2025 | Adrian Rawcliffe | Chief Executive Officer | Acquired A | 5,143,248 | $0.00 | $0 | 5,143,248 | Direct |
| 20 Feb, 2025 | Cintia Piccina | Chief Commercial Officer | Acquired A | 1,612,032 | $0.00 | $0 | 1,612,032 | Direct |
| 20 Feb, 2025 | John Lunger | Chief Patient Supply Officer | Acquired A | 1,612,032 | $0.00 | $0 | 1,612,032 | Direct |
| 20 Feb, 2025 | Joanna Elizabeth Brewer | Chief Scientific Officer | Acquired A | 1,612,032 | $0.00 | $0 | 1,612,032 | Direct |
| 20 Feb, 2025 | Elliot Norry | Chief Medical Officer | Acquired A | 1,612,032 | $0.00 | $0 | 1,612,032 | Direct |
| 20 Feb, 2025 | William C Jr Bertrand | Chief Operating Officer | Acquired A | 1,612,032 | $0.00 | $0 | 1,612,032 | Direct |
| 20 Feb, 2025 | Adrian Rawcliffe | Chief Executive Officer | Acquired A | 3,428,832 | $0.00 | $0 | 3,428,832 | Direct |
| 20 Feb, 2025 | Elliot Norry | Chief Medical Officer | Acquired A | 1,074,696 | $0.00 | $0 | 1,074,696 | Direct |
| 20 Feb, 2025 | John Lunger | Chief Patient Supply Officer | Acquired A | 1,074,696 | $0.00 | $0 | 1,074,696 | Direct |
| 20 Feb, 2025 | William C Jr Bertrand | Chief Operating Officer | Acquired A | 1,074,696 | $0.00 | $0 | 1,074,696 | Direct |
| 20 Feb, 2025 | Cintia Piccina | Chief Commercial Officer | Acquired A | 1,074,696 | $0.00 | $0 | 1,074,696 | Direct |
| 20 Feb, 2025 | Joanna Elizabeth Brewer | Chief Scientific Officer | Acquired A | 1,074,696 | $0.00 | $0 | 1,074,696 | Direct |
| 17 Jan, 2025 | Elliot Norry | Chief Medical Officer | Disposed S | 5,584 | $0.58 | $3.24K | 7,510 | Direct |