John T Henderson insider trades: Cytokinetics (CYTK) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where John reports to the SEC
Open-market buys and sales
27 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| May 5, 2026 | CYTK | ↓ Sell | 20,000 | $75.97 | $1.5M | Direct | May 5, 2026 (0d) |
| Dec 2, 2025 | CYTK | ↓ Sell | 8,750 | $63.90 | $559K | Direct | Dec 2, 2025 (0d) |
| Apr 15, 2025 | CYTK | ↓ Sell | 3,190 | $38.66 | $123K | Direct | Apr 16, 2025 (1d) |
| Dec 11, 2024 | CYTK | ↓ Sell | 1,780 | $50.42 | $90K | Direct | Dec 12, 2024 (1d) |
| Apr 25, 2024 | CYTK | ↓ Sell | 10,562 | $64.54 | $682K | Direct | Apr 25, 2024 (0d) |
| Feb 14, 2024 | CYTK | ↓ Sell | 5,000 | $76.48 | $382K | Direct | Feb 14, 2024 (0d) |
| Jan 12, 2024 | CYTK | ↓ Sell | 5,000 | $85.14 | $426K | Direct | Jan 12, 2024 (0d) |
| Dec 18, 2023 | CYTK | ↓ Sell | 2,458 | $36.34 | $89K | Direct | Dec 19, 2023 (1d) |
| May 15, 2023 | CYTK | ↓ Sell | 4,166 | $37.77 | $157K | Direct | May 15, 2023 (0d) |
| Sep 12, 2022 | CYTK | ↓ Sell | 21,759 | $54.94 | $1.2M | Direct | Sep 12, 2022 (0d) |
| Nov 5, 2021 | CYTK | ↓ Sell | 8,503 | $40.00 | $340K | Direct | Nov 5, 2021 (0d) |
| Apr 1, 2021 | CYTK | ↓ Sell | 2,233 | $23.66 | $53K | Direct | Apr 5, 2021 (4d) |
| Dec 31, 2020 | CYTK | ↓ Sell | 858 | $20.31 | $17K | Direct | Dec 31, 2020 (0d) |
| Oct 5, 2020 | CYTK | ↓ Sell | 3,000 | $29.00 | $87K | Direct | Oct 5, 2020 (0d) |
| Nov 19, 2019 | CYTK | ↑ Buy | 6,000 | $8.57 | $51K | Direct | Jan 2, 2020 (44d) |
| Nov 7, 2019 | MYGN | ↑ Buy | 5,250 | $23.46 | $123K | Direct | Nov 7, 2019 (0d) |
| Nov 7, 2019 | MYGN | ↑ Buy | 1,750 | $23.46 | $41K | by Spouse | Nov 7, 2019 (0d) |
| Jul 11, 2018 | MYGN | ↓ Sell | 30,000 | $42.06 | $1.3M | Direct | Jul 13, 2018 (2d) |
| Sep 1, 2017 | MYGN | ↓ Sell | 30,000 | $30.30 | $909K | Direct | Sep 5, 2017 (4d) |
| Feb 23, 2017 | MYGN | ↑ Buy | 6,000 | $18.66 | $112K | Direct | Feb 23, 2017 (0d) |
| Sep 12, 2016 | MYGN | ↓ Sell | 30,000 | $20.49 | $615K | Direct | Sep 13, 2016 (1d) |
| Jun 5, 2014 | MYGN | ↓ Sell | 5,000 | $35.70 | $179K | Direct | Jun 6, 2014 (1d) |
| Mar 7, 2014 | MYGN | ↓ Sell | 20,000 | $37.86 | $757K | Direct | Mar 11, 2014 (4d) |
| Mar 5, 2014 | MYGN | ↓ Sell | 5,000 | $37.59 | $188K | Direct | Mar 7, 2014 (2d) |
| Dec 10, 2012 | MYGN | ↓ Sell | 40,000 | $27.65 | $1.1M | Direct | Dec 11, 2012 (1d) |
| May 13, 2009 | MYGN | ↑ Buy | 300 | $32.73 | $10K | by Spouse | May 14, 2009 (1d) |
| Feb 5, 2009 | MYGN | ↓ Sell | 10,000 | $82.46 | $825K | Direct | Feb 5, 2009 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other CYTK insiders
Open-market trades in the last 12 months
About John T Henderson's insider trades
John T Henderson is a director at Cytokinetics (CYTK). Since Feb 5, 2009, John has reported 5 open-market purchases worth $337K and 22 sales worth $11.6M on SEC Form 4. In the last 12 months: 2 sales ($2.1M).
Their filings also include grants and awards (73 filings), option exercises (24 filings), shares withheld for taxes (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every CYTK insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.