| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Bulis Veronica Sanchez | VP, Corporate Controller | C/O LYELL IMMUNOPHARMA, INC., 201 HASKINS WAY, SUITE 101, SOUTH SAN FRANCISCO | /s/ Mark Meltz, Attorney-in-Fact | 11 Feb 2026 | 0002095702 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | LYEL | Common Stock | Award | $0 | +8,750 | +123% | $0.000000 | 15,891 | 10 Feb 2026 | Direct | F1 |
| transaction | LYEL | Common Stock | Sale | $5,872 | -254 | -1.6% | $23.12 | 15,637 | 10 Feb 2026 | Direct | F2 |
| Id | Content |
|---|---|
| F1 | Represents restricted stock units granted under the Issuer's 2021 Equity Incentive Plan. 12.5% of the total number of restricted stock units will vest on August 9, 2026, and thereafter an additional 1/16th of the total number of restricted stock units will vest quarterly thereafter, subject to the reporting person providing service through the applicable vesting date. |
| F2 | Shares automatically sold to cover tax withholding obligation from settlement of vested restricted stock units. |