John T. Henderson, a director at Cytokinetics Inc. ($CYTK), made two open market sales of common shares in the last year, totaling about $682 thousand. His most recent sale occurred on December 2, 2025. These sales rank 5,801st among 11,678 individual insiders, trailing the average of $8.6 million per seller across about 6.4 transactions. Henderson recorded no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 15, 2026 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 334 | $63.44 | 74,995.0000 | 122,264,929 | 0.45% | 0.00% |
| Dec. 2, 2025 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | S | Common Stock | 8750 | $63.90 | 74,661.0000 | 122,264,929 | 10.49% | 0.01% |
| Dec. 2, 2025 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Common Stock | 8750 | $10.00 | 83,411.0000 | 122,264,929 | 11.72% | 0.01% |
| Dec. 2, 2025 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Non-Qualified Stock Option (Right to Buy) | 8750 | $0.00 | 0.0000 | 122,264,929 | 100.00% | 0.01% |
| Oct. 15, 2025 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 338 | $62.80 | 74,661.0000 | 118,410,689 | 0.45% | 0.00% |
| July 15, 2025 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 559 | $38.01 | 74,323.0000 | 118,410,689 | 0.76% | 0.00% |
| May 14, 2025 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 7333 | $0.00 | 73,764.0000 | 118,410,689 | 11.04% | 0.01% |
| May 14, 2025 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Non-Qualified Stock Option (Right to Buy) | 10880 | $0.00 | 10,880.0000 | 118,410,689 | 9999.99% | 0.01% |
| April 15, 2025 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Stock Option (Right to Buy) | 20000 | $0.00 | 0.0000 | 118,410,689 | 100.00% | 0.02% |
| April 15, 2025 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 551 | $38.56 | 66,431.0000 | 118,410,689 | 0.84% | 0.00% |
| April 15, 2025 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | S | Common Stock | 3190 | $38.66 | 66,431.0000 | 118,410,689 | 4.58% | 0.00% |
| April 15, 2025 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Common Stock | 20000 | $6.21 | 69,621.0000 | 118,410,689 | 40.31% | 0.02% |
| Jan. 2, 2025 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 434 | $48.93 | 49,070.0000 | 0 | 0.89% | 0.00% |
| Dec. 11, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Non-Qualified Stock Option (Right to Buy) | 10092 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Dec. 11, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | S | Common Stock | 1780 | $50.42 | 38,544.0000 | 0 | 4.41% | 0.00% |
| Dec. 11, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Common Stock | 1780 | $7.37 | 40,324.0000 | 0 | 4.62% | 0.00% |
| Dec. 11, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Common Stock | 10092 | $7.37 | 48,636.0000 | 0 | 26.18% | 0.00% |
| Dec. 11, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Non-Qualified Stock Option (Right to Buy) | 1780 | $0.00 | 10,092.0000 | 0 | 14.99% | 0.00% |
| Oct. 1, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 403 | $52.60 | 38,544.0000 | 0 | 1.06% | 0.00% |
| July 1, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 388 | $0.00 | 38,141.0000 | 0 | 1.03% | 0.00% |
| May 15, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Non-Qualified Stock Option (Right to Buy) | 3636 | $0.00 | 3,636.0000 | 0 | 9999.99% | 0.00% |
| May 15, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 5600 | $0.00 | 37,753.0000 | 0 | 17.42% | 0.00% |
| April 25, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | S | Common Stock | 10562 | $64.54 | 32,153.0000 | 0 | 24.73% | 0.00% |
| Feb. 14, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Non-Qualified Stock Option (Right to Buy) | 5000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Feb. 14, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | S | Common Stock | 5000 | $76.48 | 42,715.0000 | 0 | 10.48% | 0.00% |
| Feb. 14, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Common Stock | 5000 | $4.44 | 47,715.0000 | 0 | 11.71% | 0.00% |
| Jan. 12, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Common Stock | 5000 | $4.44 | 47,715.0000 | 0 | 11.71% | 0.00% |
| Jan. 12, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | S | Common Stock | 5000 | $85.14 | 42,715.0000 | 0 | 10.48% | 0.00% |
| Jan. 12, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Non-Qualified Stock Option (Right to Buy) | 5000 | $0.00 | 5,000.0000 | 0 | 50.00% | 0.00% |
| Jan. 2, 2024 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 252 | $84.12 | 42,715.0000 | 0 | 0.59% | 0.00% |
| Dec. 18, 2023 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Non-Qualified Stock Option (Right to Buy) | 13020 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Dec. 18, 2023 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Common Stock | 13020 | $6.72 | 44,921.0000 | 0 | 40.81% | 0.00% |
| Dec. 18, 2023 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | S | Common Stock | 2458 | $36.34 | 42,463.0000 | 0 | 5.47% | 0.00% |
| Oct. 2, 2023 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 762 | $27.88 | 31,901.0000 | 0 | 2.45% | 0.00% |
| July 3, 2023 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 636 | $33.36 | 31,139.0000 | 0 | 2.09% | 0.00% |
| May 10, 2023 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 5000 | $0.00 | 30,503.0000 | 0 | 19.61% | 0.00% |
| May 10, 2023 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Non-Qualified Stock Option (Right to Buy) | 10000 | $0.00 | 10,000.0000 | 0 | 9999.99% | 0.00% |
| May 15, 2023 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Common Stock | 4166 | $6.78 | 29,669.0000 | 0 | 16.34% | 0.00% |
| May 15, 2023 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | M | Non-Qualified Stock Option (Right to Buy) | 4166 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 15, 2023 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | S | Common Stock | 4166 | $37.77 | 25,503.0000 | 0 | 14.04% | 0.00% |
| April 3, 2023 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 530 | $37.71 | 25,503.0000 | 0 | 2.12% | 0.00% |
| Jan. 3, 2023 | CYTOKINETICS INC | $CYTK | HENDERSON JOHN T | Director | A | Common Stock | 450 | $44.35 | 24,973.0000 | 0 | 1.84% | 0.00% |