CYTOKINETICS INC Insider Trading Activity
Every SEC Form 4 insider transaction reported for CYTOKINETICS INC (CYTK), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are CYTK insiders buying or selling?
In the last 12 months, CYTOKINETICS INC insiders reported 0 open-market purchases ($0) and 76 sales ($49.5M) — net selling of $49.5M. Since January 2018, Trabud has recorded 419 Form 4 filings for CYTK: 2 buys ($3.3M) and 417 sells ($183.9M).
Source: SEC EDGAR Form 4
What stands out
- No CYTOKINETICS INC insider made an open-market purchase in the last 12 months; the 76 reported open-market sales totaled $49.5M.
Key Statistics (January 2018 – Oct 13, 2026)
Total Form 4 filings
419
SEC EDGAR
Insider filers
21
Insider buys (2)
$3.3M
Insider sells (417)
$183.9M
Insider sentiment
Net sellingNet insider flow of $180.6M in net selling since January 2018, and $49.5M in net selling over the last 12 months.
Recent CYTK insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Oct 13, 2026 | Robert I Blum | President & CEO | Sale | 7.5K | $62.88 | $471.6K | SEC ↗ |
| Oct 6, 2026 | Fady Ibraham Malik | EVP Research & Development | Sale | 3.5K | $61.38 | $214.8K | SEC ↗ |
| Sep 28, 2026 | Robert I Blum | President & CEO | Sale | 7.5K | $65.46 | $490.9K | SEC ↗ |
| Sep 22, 2026 | Fady Ibraham Malik | EVP Research & Development | Sale | 3.5K | $68.29 | $239.0K | SEC ↗ |
| Sep 15, 2026 | Robert E Landry | Director | Sale | 1.0K | $72.13 | $72.1K | SEC ↗ |
| Sep 15, 2026 | Robert I Blum | President & CEO | Sale | 105.4K | $69.62 | $7.3M | SEC ↗ |
| Sep 11, 2026 | Robert E Landry | Director | Sale | 1.0K | $74.66 | $74.7K | SEC ↗ |
| Sep 8, 2026 | Fady Ibraham Malik | EVP Research & Development | Sale | 3.5K | $75.46 | $264.1K | SEC ↗ |
| Sep 1, 2026 | Lynne B Parshall | Director | Sale | 5.0K | $71.48 | $357.4K | SEC ↗ |
| Aug 31, 2026 | Andrew Callos | EVP, Chief Commercial Officer | Sale | 10.0K | $70.24 | $702.4K | SEC ↗ |
| Aug 31, 2026 | Robert I Blum | President & CEO | Sale | 7.5K | $70.24 | $526.8K | SEC ↗ |
| Aug 18, 2026 | Fady Ibraham Malik | EVP Research & Development | Sale | 3.5K | $75.82 | $265.4K | SEC ↗ |
| Aug 10, 2026 | Robert I Blum | President & CEO | Sale | 7.5K | $76.76 | $575.7K | SEC ↗ |
| Jul 30, 2026 | Andrew Callos | EVP, Chief Commercial Officer | Sale | 14.0K | $79.88 | $1.1M | SEC ↗ |
| Jul 27, 2026 | Robert I Blum | President & CEO | Sale | 7.5K | $80.87 | $606.5K | SEC ↗ |
| Jul 23, 2026 | Fady Ibraham Malik | EVP Research & Development | Sale | 3.5K | $80.59 | $282.1K | SEC ↗ |
| Jul 14, 2026 | Robert I Blum | President & CEO | Sale | 7.5K | $82.02 | $615.1K | SEC ↗ |
| Jul 7, 2026 | Fady Ibraham Malik | EVP Research & Development | Sale | 3.5K | $86.62 | $303.2K | SEC ↗ |
| Jul 2, 2026 | Robert I Blum | President & CEO | Sale | 7.5K | $84.92 | $636.9K | SEC ↗ |
| Jul 2, 2026 | Andrew Callos | EVP, Chief Commercial Officer | Sale | 15.0K | $85.80 | $1.3M | SEC ↗ |
| Jul 2, 2026 | Sung Lee | EVP, Chief Financial Officer | Sale | 1.1K | $87.79 | $97.6K | SEC ↗ |
| Jun 29, 2026 | Sung Lee | EVP, Chief Financial Officer | Sale | 38.7K | $82.30 | $3.2M | SEC ↗ |
| Jun 29, 2026 | Sung Lee | EVP, Chief Financial Officer | Sale | 3.1K | $85.00 | $266.4K | SEC ↗ |
| Jun 23, 2026 | Fady Ibraham Malik | EVP Research & Development | Sale | 3.5K | $79.51 | $278.3K | SEC ↗ |
| Jun 15, 2026 | Robert I Blum | President & CEO | Sale | 7.5K | $70.46 | $528.5K | SEC ↗ |
Showing the 25 most recent of 419 Form 4 filings for CYTOKINETICS INC.
Most active CYTK insiders
- Robert I Blum148 filings
- Fady Ibraham Malik118 filings
- Andrew Callos29 filings
- Lynne B Parshall17 filings
- Sandford D Smith17 filings
Ask anything about CYTK insider activity
Use Trabud's AI agent to query CYTOKINETICS INC's Form 4 history in plain English — "Show me CYTK CEO purchases this year" or compare it against any other ticker.
Open the AI agentCYTK insider trading FAQ
Are CYTOKINETICS INC insiders buying or selling?
In the last 12 months, CYTOKINETICS INC insiders reported 0 open-market purchases ($0) and 76 sales ($49.5M) — net selling of $49.5M. Since January 2018, Trabud has recorded 419 Form 4 filings for CYTK: 2 buys ($3.3M) and 417 sells ($183.9M). Over the full record that is net selling of $180.6M.
How many insiders trade CYTK stock?
21 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for CYTOKINETICS INC. The most recent filing was accepted on Oct 13, 2026.
Where does Trabud get CYTK insider trading data?
All CYTK insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.