Cytokinetics, Incorporated (CYTK) ownership: insiders 1% · institutions 107% (13F 2026-03-31). Insider activity, 90 days: Routine (21 sales, 0 open-market buys). 4 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| T. Rowe Price | 17523840.00 | $1.15B | 12.6% | 2026-03-31 |
| BlackRock | 16548011.00 | $1.09B | 11.9% | 2026-03-31 |
| Vanguard | 12347013.00 | $813.79M | 8.9% | 2026-03-31 |
| FMR (Fidelity) | 10723140.00 | $706.76M | 7.7% | 2026-03-31 |
| Wellington Management | 8009489.00 | $527.91M | 5.8% | 2026-03-31 |
| State Street | 5745193.00 | $378.67M | 4.1% | 2026-03-31 |
| Avoro Capital Advisors LLC | 3333333.00 | $219.70M | 2.4% | 2026-03-31 |
| Geode Capital Management | 3215415.00 | $211.97M | 2.3% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-08-18 | |
| Sell | null | 2026-08-18 | |
| Sell | null | 2026-08-18 | |
| Sell | null | 2026-08-10 | |
| Sell | null | 2026-08-10 | |
| Sell | null | 2026-08-10 | |
| Sell | null | 2026-07-30 | |
| Sell | null | 2026-07-30 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.