Cytokinetics, Incorporated (CYTK) ownership: Top institutional holder: T. Rowe Price Investment Management, Inc. ($1.15B). Insider activity: Net Seller (0 buys, 20 sells). 3 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| T. Rowe Price Investment Management, Inc. | 17523840.00 | $1.15B | 2026-03-31 |
| BlackRock, Inc. | 16548011.00 | $1.09B | 2026-03-31 |
| VANGUARD GROUP INC | 12048131.00 | $765.54M | 2025-12-31 |
| FMR LLC | 10723140.00 | $706.76M | 2026-03-31 |
| WELLINGTON MANAGEMENT GROUP LLP | 8009489.00 | $527.91M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5843782.00 | $385.16M | 2026-03-31 |
| STATE STREET CORP | 5745193.00 | $378.67M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 5488634.00 | $361.76M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-09 | |
| Sell | null | 2026-06-09 | |
| Sell | null | 2026-06-09 | |
| Sell | null | 2026-06-01 | |
| Sell | null | 2026-06-01 | |
| Sell | null | 2026-06-01 | |
| Sell | null | 2026-06-01 |
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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.