As of May 04, 2026, the three largest insider holders of LYEL are Hans Edgar Bishop (Director, 4.69Mn shares), Venture Partners Ix, Llc Arch (TenPercentOwner, 1.43Mn shares), Venture Fund Xiii, L.P. Arch (TenPercentOwner, 1.43Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Hans Edgar Bishop | - | 4,685,614 | 0 | 09 Sep, 2022 |
| Venture Fund Xiii, L.P. Arch | - | 0 | 1,426,528 | 09 Mar, 2026 |
| Venture Partners Ix, Llc Arch | - | 0 | 1,426,528 | 09 Mar, 2026 |
| Venture Partners Ix, Llc Arch | - | 0 | 1,426,528 | 09 Mar, 2026 |
| Richard Klausner | - | 0 | 930,880 | 17 Aug, 2023 |
| Richard Klausner | - | 0 | 843,365 | 18 Mar, 2025 |
| Cathy Friedman | - | 0 | 236,370 | 14 Dec, 2021 |
| Charles W. Newton | Chief Financial Officer | 0 | 200,000 | 18 Mar, 2025 |
| Sumant Ramachandra | - | 0 | 200,000 | 25 Mar, 2025 |
| Matthew Lang | Chief Business Officer | 162,500 | 0 | 26 Feb, 2025 |
| Lynn Seely | President And Ceo | 74,266 | 0 | 12 Feb, 2026 |
| Otis W Brawley | - | 35,640 | 0 | 02 Apr, 2025 |
| David Shook | Chief Medical Officer | 21,900 | 0 | 11 Jun, 2025 |
| Stephen J. Hill | Chief Operating Officer | 17,795 | 0 | 12 Feb, 2026 |
| Gary K. Lee | Chief Scientific Officer | 16,938 | 0 | 12 Feb, 2026 |
| Veronica Sanchez Bulis | Vp, Corporate Controller | 15,637 | 0 | 11 Feb, 2026 |
| Charles W. Newton | Chief Financial Officer | 15,306 | 0 | 22 Aug, 2025 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 09 Mar, 2026 | Smital Shah | Option (right to buy) | A | 140,000 | $0.00 | 140,000 | D | A |
| 06 Mar, 2026 | Venture Partners Ix, Llc Arch | Common Stock | A | 488,090 | $25.61 | 1,426,528 | I | P |
| 06 Mar, 2026 | Venture Partners Ix, Llc Arch | Common Stock | A | 488,090 | $25.61 | 1,426,528 | I | P |
| 06 Mar, 2026 | Venture Fund Xiii, L.P. Arch | Common Stock | A | 488,090 | $25.61 | 1,426,528 | I | P |
| 11 Feb, 2026 | Stephen J. Hill | Common Stock | D | 1,236 | $23.39 | 17,795 | D | S |
| 11 Feb, 2026 | Gary K. Lee | Common Stock | D | 1,671 | $23.39 | 16,938 | D | S |
| 11 Feb, 2026 | Lynn Seely | Common Stock | D | 7,455 | $23.39 | 74,266 | D | S |
| 10 Feb, 2026 | Mark A Meltz | Option (right to buy) | A | 50,000 | $0.00 | 50,000 | D | A |
| 09 Feb, 2026 | Gary K. Lee | Common Stock | A | 4,000 | $0.00 | 18,756 | D | A |
| 10 Feb, 2026 | Veronica Sanchez Bulis | Common Stock | A | 8,750 | $0.00 | 15,891 | D | A |
| 09 Feb, 2026 | Stephen J. Hill | Common Stock | A | 4,000 | $0.00 | 19,140 | D | A |
| 09 Feb, 2026 | Lynn Seely | Common Stock | A | 20,000 | $0.00 | 82,159 | D | A |
| 10 Feb, 2026 | Veronica Sanchez Bulis | Common Stock | D | 254 | $23.12 | 15,637 | D | S |
| 10 Feb, 2026 | Gary K. Lee | Common Stock | D | 147 | $23.12 | 18,609 | D | S |
| 10 Feb, 2026 | David Shook | Option (right to buy) | A | 50,000 | $0.00 | 50,000 | D | A |
| 10 Feb, 2026 | Stephen J. Hill | Common Stock | D | 109 | $23.12 | 19,031 | D | S |
| 10 Feb, 2026 | Lynn Seely | Common Stock | D | 438 | $23.12 | 81,721 | D | S |
| 10 Feb, 2026 | Lynn Seely | Option (right to buy) | A | 155,000 | $0.00 | 155,000 | D | A |
| 10 Feb, 2026 | Gary K. Lee | Option (right to buy) | A | 50,000 | $0.00 | 50,000 | D | A |
| 10 Feb, 2026 | Stephen J. Hill | Option (right to buy) | A | 65,000 | $0.00 | 65,000 | D | A |