Insider Trading
Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.
| Ticker | Insider | Title | Date | Transaction | Price ($) | Shares | Value ($) | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|
| LYEL | Bulis Veronica Sanchez | VP, Corporate Controller | 11/10/2026 | Verkauf | 15.93 | 416 | 6,627 | Form 4 |
| LYEL | Lee Gary K. | Chief Scientific Officer | 11/10/2026 | Verkauf | 15.93 | 129 | 2,055 | Form 4 |
| LYEL | Hill Stephen J. | Chief Operating Officer | 11/10/2026 | Verkauf | 15.93 | 88 | 1,402 | Form 4 |
| LYEL | Seely Lynn | President and CEO | 11/10/2026 | Verkauf | 15.93 | 545 | 8,682 | Form 4 |
| LYEL | ARCH Venture Partners IX, LLC | 10% Owner | 11/04/2026 | Kauf | 10.77 | 2,321,262 | 24,999,992 | Form 4 |
| LYEL | ARCH Venture Fund XIII, L.P. | 10% Owner | 11/04/2026 | Kauf | 10.77 | 2,321,262 | 24,999,992 | Form 4 |
| LYEL | Aguirre Jarrad Mattieu | Chief Medical Officer | 10/12/2026 | Verkauf | 8.63 | 422 | 3,642 | Form 4 |
| LYEL | Shook David | Chief Medical Officer | 09/10/2026 | Verkauf | 12.70 | 500 | 6,350 | Form 4 |
| LYEL | Lee Gary K. | Chief Scientific Officer | 08/21/2026 | Verkauf | 15.54 | 1,457 | 22,642 | Form 4 |
| LYEL | Hill Stephen J. | Chief Operating Officer | 08/21/2026 | Verkauf | 15.54 | 989 | 15,369 | Form 4 |
| LYEL | Seely Lynn | President and CEO | 08/21/2026 | Verkauf | 15.54 | 9,589 | 149,013 | Form 4 |
A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).