CYTK
Cytokinetics Inc
NASDAQ: CYTK · HEALTHCARE · BIOTECHNOLOGY
$80.42
+2.60% today
Updated 2026-07-30
Market cap
$10.89B
P/E ratio
—
P/S ratio
102.88x
EPS (TTM)
$-6.85
Dividend yield
—
52W range
$33 – $88
Volume
2.1M
Cytokinetics Inc (CYTK) Insider transactions
Net insider activity
Net selling (187,964 shares)
Buy transactions
48
Sell transactions
52
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-15 | WYSENSKI, NANCY | Director | Buy | 75 | $82.62 | $6196.50 |
| 2026-07-15 | WIERENGA, WENDELL | Director | Buy | 75 | $82.62 | $6196.50 |
| 2026-07-15 | KAYE, EDWARD M. MD | Director | Buy | 151 | $82.62 | $12475.62 |
| 2026-07-15 | HENDERSON, JOHN T | Director | Buy | 272 | $82.62 | $22472.64 |
| 2026-07-15 | HARRINGTON, ROBERT ARTHUR | Director | Buy | 151 | $82.62 | $12475.62 |
| 2026-07-15 | DALY, JAMES M | Director | Buy | 151 | $82.62 | $12475.62 |
| 2026-07-13 | BLUM, ROBERT I | Director, President & CEO | Sale | 7,490 | — | — |
| 2026-07-13 | BLUM, ROBERT I | Director, President & CEO | Buy | 7,490 | $10.60 | $79394.00 |
| 2026-07-13 | BLUM, ROBERT I | Director, President & CEO | Sale | 10 | $82.02 | $820.20 |
| 2026-07-07 | MALIK, FADY IBRAHAM | EVP Research & Development | Sale | 3,500 | — | — |
| 2026-07-07 | MALIK, FADY IBRAHAM | EVP Research & Development | Buy | 3,500 | $7.80 | $27300.00 |
| 2026-07-01 | LEE, SUNG | EVP, Chief Financial Officer | Sale | 1,112 | — | — |
| 2026-07-01 | LEE, SUNG | EVP, Chief Financial Officer | Buy | 1,112 | $48.51 | $53943.12 |
| 2026-07-01 | CALLOS, ANDREW | EVP, Chief Commercial Officer | Sale | 15,000 | — | — |
| 2026-07-01 | CALLOS, ANDREW | EVP, Chief Commercial Officer | Buy | 15,000 | $23.26 | $348900.00 |
| 2026-07-01 | BLUM, ROBERT I | Director, President & CEO | Sale | 7,500 | $84.92 | $636900.00 |
| 2026-06-29 | LEE, SUNG | EVP, Chief Financial Officer | Sale | 1,113 | — | — |
| 2026-06-29 | LEE, SUNG | EVP, Chief Financial Officer | Sale | 823 | — | — |
| 2026-06-29 | LEE, SUNG | EVP, Chief Financial Officer | Sale | 822 | — | — |
| 2026-06-29 | LEE, SUNG | EVP, Chief Financial Officer | Sale | 188 | — | — |
| 2026-06-29 | LEE, SUNG | EVP, Chief Financial Officer | Sale | 3,134 | $85.00 | $266390.00 |
| 2026-06-29 | LEE, SUNG | EVP, Chief Financial Officer | Buy | 1,113 | $48.51 | $53991.63 |
| 2026-06-29 | LEE, SUNG | EVP, Chief Financial Officer | Buy | 823 | $44.36 | $36508.28 |
| 2026-06-29 | LEE, SUNG | EVP, Chief Financial Officer | Buy | 822 | $44.36 | $36463.92 |
| 2026-06-29 | LEE, SUNG | EVP, Chief Financial Officer | Buy | 188 | $44.36 | $8339.68 |
| 2026-06-24 | LEE, SUNG | EVP, Chief Financial Officer | Sale | 23,370 | — | — |
| 2026-06-24 | LEE, SUNG | EVP, Chief Financial Officer | Sale | 9,307 | — | — |
| 2026-06-24 | LEE, SUNG | EVP, Chief Financial Officer | Sale | 1,113 | — | — |
| 2026-06-24 | LEE, SUNG | EVP, Chief Financial Officer | Sale | 822 | — | — |
| 2026-06-24 | LEE, SUNG | EVP, Chief Financial Officer | Sale | 2,817 | — | — |
| 2026-06-24 | LEE, SUNG | EVP, Chief Financial Officer | Sale | 188 | — | — |
| 2026-06-24 | LEE, SUNG | EVP, Chief Financial Officer | Sale | 38,730 | $82.30 | $3.19M |
| 2026-06-24 | LEE, SUNG | EVP, Chief Financial Officer | Buy | 23,370 | $48.51 | $1.13M |
| 2026-06-24 | LEE, SUNG | EVP, Chief Financial Officer | Buy | 9,307 | $44.36 | $412858.52 |
| 2026-06-24 | LEE, SUNG | EVP, Chief Financial Officer | Buy | 2,817 | $44.36 | $124962.12 |
| 2026-06-24 | LEE, SUNG | EVP, Chief Financial Officer | Buy | 1,113 | $48.51 | $53991.63 |
| 2026-06-24 | LEE, SUNG | EVP, Chief Financial Officer | Buy | 822 | $44.36 | $36463.92 |
| 2026-06-24 | LEE, SUNG | EVP, Chief Financial Officer | Buy | 188 | $44.36 | $8339.68 |
| 2026-06-23 | MALIK, FADY IBRAHAM | EVP Research & Development | Sale | 3,500 | — | — |
| 2026-06-23 | MALIK, FADY IBRAHAM | EVP Research & Development | Sale | 3,500 | $79.51 | $278285.00 |
| 2026-06-15 | BLUM, ROBERT I | Director, President & CEO | Sale | 7,500 | $70.46 | $528450.00 |
| 2026-06-09 | MALIK, FADY IBRAHAM | EVP Research & Development | Sale | 3,500 | — | — |
| 2026-06-09 | MALIK, FADY IBRAHAM | EVP Research & Development | Sale | 3,500 | $67.98 | $237930.00 |
| 2026-06-01 | PARSHALL, B LYNNE | Director | Sale | 5,000 | $74.08 | $370400.00 |
| 2026-06-01 | KAYE, EDWARD M. MD | Director | Sale | 2,933 | $76.09 | $223171.97 |
| 2026-06-01 | CALLOS, ANDREW | EVP, Chief Commercial Officer | Sale | 15,000 | — | — |
| 2026-06-01 | CALLOS, ANDREW | EVP, Chief Commercial Officer | Sale | 15,000 | $74.08 | $1.11M |
| 2026-05-27 | WYSENSKI, NANCY | Director | Buy | 4,301 | — | — |
| 2026-05-27 | WYSENSKI, NANCY | Director | Buy | 2,851 | — | — |
| 2026-05-27 | WIERENGA, WENDELL | Director | Buy | 4,301 | — | — |
| 2026-05-27 | WIERENGA, WENDELL | Director | Buy | 2,851 | — | — |
| 2026-05-27 | PARSHALL, B LYNNE | Director | Buy | 4,301 | — | — |
| 2026-05-27 | PARSHALL, B LYNNE | Director | Buy | 2,851 | — | — |
| 2026-05-27 | LANDRY, ROBERT E | Director | Buy | 4,301 | — | — |
| 2026-05-27 | LANDRY, ROBERT E | Director | Buy | 2,851 | — | — |
| 2026-05-27 | KAYE, EDWARD M. MD | Director | Buy | 4,301 | — | — |
| 2026-05-27 | KAYE, EDWARD M. MD | Director | Buy | 2,851 | — | — |
| 2026-05-27 | HENDERSON, JOHN T | Director | Buy | 4,301 | — | — |
| 2026-05-27 | HENDERSON, JOHN T | Director | Buy | 2,851 | — | — |
| 2026-05-27 | HARRINGTON, ROBERT ARTHUR | Director | Buy | 4,301 | — | — |
| 2026-05-27 | HARRINGTON, ROBERT ARTHUR | Director | Buy | 2,851 | — | — |
| 2026-05-27 | DALY, JAMES M | Director | Buy | 4,301 | — | — |
| 2026-05-27 | DALY, JAMES M | Director | Buy | 2,851 | — | — |
| 2026-05-27 | BLUM, ROBERT I | Director, President & CEO | Sale | 7,500 | $77.21 | $579075.00 |
| 2026-05-27 | BHANJI, MUNA | Director | Buy | 4,301 | — | — |
| 2026-05-27 | BHANJI, MUNA | Director | Buy | 2,851 | — | — |
| 2026-05-19 | MALIK, FADY IBRAHAM | EVP Research & Development | Sale | 3,500 | — | — |
| 2026-05-19 | MALIK, FADY IBRAHAM | EVP Research & Development | Sale | 3,500 | $75.69 | $264915.00 |
| 2026-05-14 | BLUM, ROBERT I | Director, President & CEO | Sale | 7,500 | $77.92 | $584400.00 |
| 2026-05-05 | WIERENGA, WENDELL | Director | Sale | 4,032 | — | — |
| 2026-05-05 | WIERENGA, WENDELL | Director | Sale | 4,032 | $75.00 | $302400.00 |
| 2026-05-05 | MALIK, FADY IBRAHAM | EVP Research & Development | Sale | 3,500 | — | — |
| 2026-05-05 | MALIK, FADY IBRAHAM | EVP Research & Development | Sale | 3,500 | $77.37 | $270795.00 |
| 2026-05-05 | LEE, SUNG | EVP, Chief Financial Officer | Sale | 23,906 | $76.87 | $1.84M |
| 2026-05-05 | HENDERSON, JOHN T | Director | Sale | 20,000 | — | — |
| 2026-05-05 | HENDERSON, JOHN T | Director | Sale | 20,000 | $75.97 | $1.52M |
| 2026-05-05 | CALLOS, ANDREW | EVP, Chief Commercial Officer | Sale | 11,333 | — | — |
| 2026-05-05 | CALLOS, ANDREW | EVP, Chief Commercial Officer | Buy | 11,333 | $39.13 | $443460.29 |
| 2026-05-01 | CALLOS, ANDREW | EVP, Chief Commercial Officer | Sale | 15,857 | — | — |
| 2026-05-01 | CALLOS, ANDREW | EVP, Chief Commercial Officer | Buy | 15,857 | $37.63 | $596698.91 |
| 2026-04-30 | CALLOS, ANDREW | EVP, Chief Commercial Officer | Sale | 15,000 | — | — |
| 2026-04-30 | CALLOS, ANDREW | EVP, Chief Commercial Officer | Buy | 15,000 | $23.26 | $348900.00 |
| 2026-04-29 | BLUM, ROBERT I | Director, President & CEO | Sale | 7,500 | $59.62 | $447150.00 |
| 2026-04-21 | MALIK, FADY IBRAHAM | EVP Research & Development | Sale | 3,500 | — | — |
| 2026-04-21 | MALIK, FADY IBRAHAM | EVP Research & Development | Buy | 3,500 | $7.80 | $27300.00 |
| 2026-04-15 | WYSENSKI, NANCY | Director | Buy | 95 | $65.37 | $6210.15 |
| 2026-04-15 | WIERENGA, WENDELL | Director | Buy | 95 | $65.37 | $6210.15 |
| 2026-04-15 | KAYE, EDWARD M. MD | Director | Buy | 191 | $65.37 | $12485.67 |
| 2026-04-15 | HENDERSON, JOHN T | Director | Buy | 325 | $65.37 | $21245.25 |
| 2026-04-15 | HARRINGTON, ROBERT ARTHUR | Director | Buy | 191 | $65.37 | $12485.67 |
| 2026-04-15 | DALY, JAMES M | Director | Buy | 191 | $65.37 | $12485.67 |
| 2026-04-15 | CALLOS, ANDREW | EVP, Chief Commercial Officer | Sale | 7,449 | $66.02 | $491782.98 |
| 2026-04-15 | BLUM, ROBERT I | Director, President & CEO | Sale | 7,500 | $65.38 | $490350.00 |
| 2026-04-07 | MALIK, FADY IBRAHAM | EVP Research & Development | Sale | 3,500 | — | — |
| 2026-04-07 | MALIK, FADY IBRAHAM | EVP Research & Development | Sale | 1,000 | — | — |
| 2026-04-07 | MALIK, FADY IBRAHAM | EVP Research & Development | Sale | 3,500 | $65.21 | $228235.00 |
| 2026-04-07 | MALIK, FADY IBRAHAM | EVP Research & Development | Sale | 1,000 | $64.75 | $64750.00 |
| 2026-04-01 | BLUM, ROBERT I | Director, President & CEO | Sale | 7,500 | $66.63 | $499725.00 |
| 2026-03-31 | CALLOS, ANDREW | EVP, Chief Commercial Officer | Sale | 3,639 | $65.00 | $236535.00 |
| 2026-03-18 | CALLOS, ANDREW | EVP, Chief Commercial Officer | Sale | 1,930 | $62.07 | $119795.10 |
Frequently asked questions
Are CYTK insiders buying or selling?
Over the transactions on record, CYTK insiders have been net sellers, with about $14.78M in stock sold across 52 sales, against 30 open-market purchases.
Does insider selling at CYTK mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which CYTK insiders are selling the most?
Recent selling is concentrated in a few names. LEE, SUNG accounts for the largest share on record, with about $5.29M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.