Cytokinetics, Incorporated (CYTK) Insider Trading
Over the last 3 months, CYTK insiders made 0 open-market buys and 18 sales, a net sale of -$11.9M (SEC Form 4). Over the last 6 months, 423 institutions increased and 249 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
18
Net (3m)
-$11.9M
Insider trades by month Buys Sells
Apr
May
Jun
Jul
Aug
Sep
Context3-month price -0.2%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Sep 1, 2026 | PARSHALL B LYNNEdirector | Sell | 5,000 | $71.48 |
| Aug 31, 2026 | Callos Andrewofficer: EVP, Chief Commercial Officer | Sell | 10,000 | $70.24 |
| Aug 31, 2026 | Callos Andrewofficer: EVP, Chief Commercial Officer | Option | 10,000 | $23.26 |
| Aug 31, 2026 | Blum Robert Idirector, officer: President & CEO | Sell | 7,500 | $70.24 |
| Aug 31, 2026 | Blum Robert Idirector, officer: President & CEO | Option | 7,500 | $10.60 |
| Aug 18, 2026 | Malik Fady Ibrahamofficer: EVP Research & Development | Sell | 3,500 | $75.82 |
| Aug 18, 2026 | Malik Fady Ibrahamofficer: EVP Research & Development | Option | 3,500 | $7.80 |
| Aug 10, 2026 | Blum Robert Idirector, officer: President & CEO | Option | 7,500 | $10.60 |
| Aug 10, 2026 | Blum Robert Idirector, officer: President & CEO | Sell | 7,500 | $76.76 |
| Jul 30, 2026 | Callos Andrewofficer: EVP, Chief Commercial Officer | Option | 14,000 | $23.26 |
| Jul 30, 2026 | Callos Andrewofficer: EVP, Chief Commercial Officer | Sell | 14,000 | $79.88 |
| Jul 27, 2026 | Blum Robert Idirector, officer: President & CEO | Sell | 7,500 | $80.87 |
| Jul 27, 2026 | Blum Robert Idirector, officer: President & CEO | Option | 7,500 | $10.60 |
| Jul 23, 2026 | Malik Fady Ibrahamofficer: EVP Research & Development | Option | 3,500 | $7.80 |
| Jul 23, 2026 | Malik Fady Ibrahamofficer: EVP Research & Development | Sell | 3,500 | $80.59 |
| Jul 16, 2026 | WIERENGA WENDELLdirector | Grant | 75 | $82.62 |
| Jul 16, 2026 | Harrington Robert Arthurdirector | Grant | 151 | $82.62 |
| Jul 16, 2026 | Kaye Edward M. MDdirector | Grant | 151 | $82.62 |
| Jul 16, 2026 | Daly James Mdirector | Grant | 151 | $82.62 |
| Jul 16, 2026 | HENDERSON JOHN Tdirector | Grant | 272 | $82.62 |
| Jul 16, 2026 | Wysenski Nancydirector | Grant | 75 | $82.62 |
| Jul 14, 2026 | Blum Robert Idirector, officer: President & CEO | Option | 7,490 | $10.60 |
| Jul 14, 2026 | Blum Robert Idirector, officer: President & CEO | Sell | 7,490 | $82.02 |
| Jul 7, 2026 | Malik Fady Ibrahamofficer: EVP Research & Development | Option | 3,500 | $7.80 |
| Jul 7, 2026 | Malik Fady Ibrahamofficer: EVP Research & Development | Sell | 3,500 | $86.62 |
| Jul 2, 2026 | Lee Sungofficer: EVP, Chief Financial Officer | Sell | 1,112 | $87.79 |
| Jul 2, 2026 | Blum Robert Idirector, officer: President & CEO | Sell | 7,500 | $84.92 |
| Jul 2, 2026 | Callos Andrewofficer: EVP, Chief Commercial Officer | Option | 15,000 | $23.26 |
| Jul 2, 2026 | Callos Andrewofficer: EVP, Chief Commercial Officer | Sell | 15,000 | $85.80 |
| Jul 2, 2026 | Lee Sungofficer: EVP, Chief Financial Officer | Option | 1,112 | $48.51 |
Source: CYTK SEC Form 4 filings, latest Sep 1, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their CYTK positions over the last 6 months (SEC Form 13F).
Increased
423
New positions
174
Reduced
249
Sold out
53
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 20.1M | Aug 7, 2026 |
| T. Rowe Price Investment Management, Inc. | Increased | 18.7M | Aug 14, 2026 |
| T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | Reduced | 17.5M | May 15, 2026 |
| BLACKROCK, INC. | Increased | 16.5M | May 13, 2026 |
| FMR LLC | Reduced | 10.7M | May 15, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 8.0M | May 15, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 6.9M | Aug 14, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 6.7M | Aug 13, 2026 |
| STATE STREET CORP | Increased | 6.5M | Aug 7, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 6.1M | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 5.8M | May 8, 2026 |
| STATE STREET CORP | Reduced | 5.7M | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 5.5M | May 15, 2026 |
| FMR LLC | Reduced | 5.0M | Aug 13, 2026 |
| Avoro Capital Advisors LLC | Increased | 5.0M | Aug 14, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.