Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Cytokinetics Incorporated, 3 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
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Cytokinetics Incorporated May 14, 202585.5%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Oct 16, 2026 | Cytokinetics Incorporated | Grant or award | +352 | $63.92 | $22,500 |
| Jul 15, 2026 | Cytokinetics Incorporated | Grant or award | +272 | $82.62 | $22,473 |
| May 27, 2026 | Cytokinetics Incorporated | Grant or award | +2,851 | — | — |
| May 5, 2026 | Cytokinetics Incorporated | Option exercise | +20,000 | $7.61 | $152,200 |
| May 5, 2026 | Cytokinetics Incorporated | Open-market sale | −20,000 | $75.97 | $1,519,400 |
| Apr 15, 2026 | Cytokinetics Incorporated | Grant or award | +325 | $65.37 | $21,245 |
| Jan 15, 2026 | Cytokinetics Incorporated | Grant or award | +334 | $63.44 | $21,189 |
| Dec 2, 2025 | Cytokinetics Incorporated | Option exercise | +8,750 | $10.00 | $87,500 |
| Dec 2, 2025 | Cytokinetics Incorporated | Open-market sale | −8,750 | $63.90 | $559,125 |
| Oct 15, 2025 | Cytokinetics Incorporated | Grant or award | +338 | $62.80 | $21,226 |
| Jul 15, 2025 | Cytokinetics Incorporated | Grant or award | +559 | $38.01 | $21,248 |
| May 14, 2025 | Cytokinetics Incorporated | Grant or award | +7,333 | — | — |
| Apr 15, 2025 | Cytokinetics Incorporated | Option exercise | +20,000 | $6.21 | $124,200 |
| Apr 15, 2025 | Cytokinetics Incorporated | Grant or award | +551 | $38.56 | $21,247 |
| Apr 15, 2025 | Cytokinetics Incorporated | Open-market sale | −3,190 | $38.66 | $123,325 |
Questions about John T. Henderson
What boards is John T. Henderson on?
John T. Henderson sits on the board of Cytokinetics Incorporated.
How long has John T. Henderson served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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