| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Lee Sung | EVP, Chief Financial Officer | 350 OYSTER POINT BLVD, SOUTH SAN FRANCISCO | /s/ John O. Faurescu, attorney-in-fact for Mr. Lee | 05 Dec 2025 | 0001793200 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CYTK | Common Stock | Tax liability | $101,431 | -1,560 | -2.2% | $65.02 | 67,917 | 03 Dec 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Sell to cover transaction for tax withholding upon vesting of Performance Stock Units granted earned on December 2, 2024. |