SEC Form 4 · Updated Daily
CYTK
— CYTOKINETICS, INCORPORATED OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Blum Robert I | Director · Officer | 377,820 | 2026-08-31 | S |
| Malik Fady Ibraham | Officer | 153,902 | 2026-09-08 | S |
| HENDERSON JOHN T | Director | 78,360 | 2026-07-15 | A |
| Lee Sung | Officer | 63,221 | 2026-07-01 | S |
| Callos Andrew | Officer | 58,555 | 2026-08-31 | S |
| WIERENGA WENDELL | Director | 35,563 | 2026-07-15 | A |
| Wysenski Nancy | Director | 33,992 | 2026-07-15 | A |
| Bhanji Muna | Director | 26,361 | 2026-05-27 | A |
| Harrington Robert Arthur | Director | 21,932 | 2026-07-15 | A |
| PARSHALL B LYNNE | Director | 10,784 | 2026-09-01 | S |
| Kaye Edward M. MD | Director | 10,434 | 2026-07-15 | A |
| Landry Robert E | Director | 9,184 | 2026-09-11 | S |
| Daly James M | Director | 3,390 | 2026-07-15 | A |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-11 | Landry Robert E | Open-market sale | 1,000 | $74.66 | 9,184 |
| 2026-09-08 | Malik Fady Ibraham | Option exercise (derivative) | 3,500 | $0.00 | 26,886 |
| 2026-09-08 | Malik Fady Ibraham | Open-market sale | 3,500 | $75.46 | 153,902 |
| 2026-09-08 | Malik Fady Ibraham | Option exercise | 3,500 | $7.80 | 157,402 |
| 2026-09-01 | PARSHALL B LYNNE | Open-market sale | 5,000 | $71.48 | 10,784 |
| 2026-08-31 | Blum Robert I | Option exercise (derivative) | 7,500 | $0.00 | 164,245 |
| 2026-08-31 | Blum Robert I | Open-market sale | 7,500 | $70.24 | 377,820 |
| 2026-08-31 | Blum Robert I | Option exercise | 7,500 | $10.60 | 385,320 |
| 2026-08-31 | Callos Andrew | Option exercise (derivative) | 10,000 | $0.00 | 0 |
| 2026-08-31 | Callos Andrew | Open-market sale | 10,000 | $70.24 | 58,555 |
| 2026-08-31 | Callos Andrew | Option exercise | 10,000 | $23.26 | 68,555 |
| 2026-08-18 | Malik Fady Ibraham | Option exercise (derivative) | 3,500 | $0.00 | 30,386 |
| 2026-08-18 | Malik Fady Ibraham | Open-market sale | 3,500 | $75.82 | 153,902 |
| 2026-08-18 | Malik Fady Ibraham | Option exercise | 3,500 | $7.80 | 157,402 |
| 2026-08-10 | Blum Robert I | Option exercise (derivative) | 7,500 | $0.00 | 171,745 |
| 2026-08-10 | Blum Robert I | Open-market sale | 7,500 | $76.76 | 377,820 |
| 2026-08-10 | Blum Robert I | Option exercise | 7,500 | $10.60 | 385,320 |
| 2026-07-30 | Callos Andrew | Option exercise (derivative) | 14,000 | $0.00 | 10,000 |
| 2026-07-30 | Callos Andrew | Open-market sale | 14,000 | $79.88 | 58,555 |
| 2026-07-30 | Callos Andrew | Option exercise | 14,000 | $23.26 | 72,555 |
| 2026-07-27 | Blum Robert I | Option exercise (derivative) | 7,500 | $0.00 | 179,245 |
| 2026-07-27 | Blum Robert I | Open-market sale | 7,500 | $80.87 | 377,820 |
| 2026-07-27 | Blum Robert I | Option exercise | 7,500 | $10.60 | 385,320 |
| 2026-07-21 | Malik Fady Ibraham | Option exercise (derivative) | 3,500 | $0.00 | 33,886 |
| 2026-07-21 | Malik Fady Ibraham | Open-market sale | 3,500 | $80.59 | 153,902 |
| 2026-07-21 | Malik Fady Ibraham | Option exercise | 3,500 | $7.80 | 157,402 |
| 2026-07-15 | Daly James M | Grant / award | 151 | $82.62 | 3,390 |
| 2026-07-15 | Harrington Robert Arthur | Grant / award | 151 | $82.62 | 21,932 |
| 2026-07-15 | HENDERSON JOHN T | Grant / award | 272 | $82.62 | 78,360 |
| 2026-07-15 | Kaye Edward M. MD | Grant / award | 151 | $82.62 | 10,434 |
| 2026-07-15 | WIERENGA WENDELL | Grant / award | 75 | $82.62 | 35,563 |
| 2026-07-15 | Wysenski Nancy | Grant / award | 75 | $82.62 | 33,992 |
| 2026-07-13 | Blum Robert I | Option exercise (derivative) | 7,490 | $0.00 | 186,745 |
| 2026-07-13 | Blum Robert I | Option exercise | 7,490 | $10.60 | 385,310 |
| 2026-07-13 | Blum Robert I | Open-market sale | 10 | $82.02 | 377,820 |
| 2026-07-07 | Malik Fady Ibraham | Option exercise (derivative) | 3,500 | $0.00 | 37,386 |
| 2026-07-07 | Malik Fady Ibraham | Open-market sale | 3,500 | $86.62 | 153,902 |
| 2026-07-07 | Malik Fady Ibraham | Option exercise | 3,500 | $7.80 | 157,402 |
| 2026-07-01 | Lee Sung | Option exercise (derivative) | 1,112 | $0.00 | 26,709 |
| 2026-07-01 | Lee Sung | Open-market sale | 1,112 | $87.79 | 63,221 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.