According to recent filings covering the 90 days ending January 10, 2026, the three most significant insider holders at Lyell Immunopharma are TenPercentOwner Plc Glaxosmithkline (1.51Mn shares), TenPercentOwner Venture Partners Ix, Llc Arch (910.32K shares), Director Robert Nelsen (910.32K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Plc Glaxosmithkline | 1,512,659 | 23 Jun, 2021 | |
| Venture Partners Ix, Llc Arch | 910,318 | 23 Jun, 2021 | |
| Robert Nelsen | 910,318 | 23 Jun, 2021 | |
| Hans Edgar Bishop | 234,281 | 09 Sep, 2022 | |
| Richard Klausner | 42,168 | 18 Mar, 2025 | |
| Cathy Friedman | 11,819 | 14 Dec, 2021 | |
| Charles W. Newton | Chief Financial Officer | 25,306 | 22 Aug, 2025 |
| Sumant Ramachandra | 10,000 | 25 Mar, 2025 | |
| Matthew Lang | Chief Business Officer | 8,125 | 26 Feb, 2025 |
| Lynn Seely | President And Ceo | 67,159 | 12 Nov, 2025 |
| Otis W Brawley | 1,782 | 02 Apr, 2025 | |
| David Shook | Chief Medical Officer | 21,900 | 11 Jun, 2025 |
| Stephen J. Hill | Chief Operating Officer | 15,750 | 12 Nov, 2025 |
| Gary K. Lee | Chief Scientific Officer | 15,366 | 12 Nov, 2025 |
| Veronica Sanchez Bulis | Vp And Corporate Controller | 7,141 | 06 Jan, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 30 Dec, 2025 | Veronica Sanchez Bulis | Common Stock | D | 936 | $32.32 | 7,141 | D | S |
| 24 Dec, 2025 | Veronica Sanchez Bulis | Common Stock | D | 1,136 | $38.67 | 8,077 | D | S |
| 10 Nov, 2025 | Lynn Seely | Common Stock | D | 412 | $16.11 | 67,159 | D | S |
| 10 Nov, 2025 | Stephen J. Hill | Common Stock | D | 95 | $16.12 | 15,750 | D | S |
| 10 Nov, 2025 | Gary K. Lee | Common Stock | D | 138 | $16.16 | 15,366 | D | S |
| 10 Nov, 2025 | Veronica Sanchez Bulis | Common Stock | D | 239 | $16.10 | 9,213 | D | S |
| 21 Aug, 2025 | Lynn Seely | Common Stock | D | 7,257 | $10.54 | 67,571 | D | S |
| 21 Aug, 2025 | Stephen J. Hill | Common Stock | D | 1,004 | $10.54 | 15,845 | D | S |
| 21 Aug, 2025 | Charles W. Newton | Common Stock | D | 1,453 | $10.54 | 15,306 | D | S |
| 21 Aug, 2025 | Gary K. Lee | Common Stock | D | 1,453 | $10.54 | 15,504 | D | S |
| 20 Aug, 2025 | Lynn Seely | Common Stock | A | 40,000 | $0.00 | 74,828 | D | A |
| 20 Aug, 2025 | Stephen J. Hill | Common Stock | A | 8,000 | $0.00 | 16,849 | D | A |
| 20 Aug, 2025 | Charles W. Newton | Common Stock | A | 8,000 | $0.00 | 16,759 | D | A |
| 20 Aug, 2025 | Gary K. Lee | Common Stock | A | 8,000 | $0.00 | 16,957 | D | A |
| 12 Aug, 2025 | Lynn Seely | Common Stock | D | 406 | $10.34 | 34,828 | D | S |
| 12 Aug, 2025 | Stephen J. Hill | Common Stock | D | 94 | $10.34 | 8,849 | D | S |
| 12 Aug, 2025 | Charles W. Newton | Common Stock | D | 136 | $10.34 | 8,759 | D | S |
| 12 Aug, 2025 | Charles W. Newton | - | - | 8,759 | D | |||
| 12 Aug, 2025 | Gary K. Lee | Common Stock | D | 136 | $10.34 | 8,957 | D | S |
| 11 Aug, 2025 | Lynn Seely | Common Stock | D | 391 | $10.53 | 35,234 | D | S |