Harrington Robert Arthur (CIK 1923988) reported 10 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-04-15). Recent activity: Buy CYTK (191 shares), Buy CYTK (197 shares), Sell CYTK (2,150 shares), Buy CYTK (199 shares), Sell CYTK (2,150 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-15 | CYTOKINETICS INC (CYTK) | Director | Buy | 191 | $12,486 |
| 2026-01-16 | CYTOKINETICS INC (CYTK) | Director | Buy | 197 | $12,498 |
| 2025-12-02 | CYTOKINETICS INC (CYTK) | Director | Sell | 2,150 | $143,620 |
| 2025-10-16 | CYTOKINETICS INC (CYTK) | Director | Buy | 199 | $12,497 |
| 2025-09-02 | CYTOKINETICS INC (CYTK) | Director | Sell | 2,150 | $104,640 |
| 2025-07-16 | CYTOKINETICS INC (CYTK) | Director | Buy | 328 | $12,467 |
| 2025-05-19 | CYTOKINETICS INC (CYTK) | Director | Buy | 7,333 | $0 |
| 2025-04-16 | CYTOKINETICS INC (CYTK) | Director | Buy | 324 | $12,493 |
| 2025-04-04 | CYTOKINETICS INC (CYTK) | Director | Sell | 450 | $17,744 |
| 2025-03-04 | CYTOKINETICS INC (CYTK) | Director | Sell | 900 | $38,250 |
Source: SEC Form 4 filings · as of 2026-04-15