| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| HENDERSON JOHN T | Director | 350 OYSTER POINT BLVD, SOUTH SAN FRANCISCO | /s/ John O. Faurescu, attorney-in-fact for Dr. Henderson | 16 Jan 2026 | 0001226488 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CYTK | Common Stock | Award | $21,189 | +334 | +0.45% | $63.44 | 74,912 | 15 Jan 2026 | Direct | F1 |
| holding | CYTK | Common Stock | 83 | 15 Jan 2026 | by Spouse |
| Id | Content |
|---|---|
| F1 | Fully vested shares of common stock received in lieu of cash retainer pursuant to Equity in Lieu of Cash Retainer Option available to members of our Board of Directors. |