Blum Robert I
Blum Robert I is a corporate insider at CYTOKINETICS INC (CYTK) filing SEC Form 4 transactions. 874 transactions across 2 companies, totaling $77,500 in purchases and $45,394,300 in sales. Source: SEC EDGAR.
Read the sale rows in Robert Blum's file as a sequence and they form a metronome: 5,000 Cytokinetics shares on July 1, 2025 at $33.55, then again on July 14, July 29, August 15, September 2, September 15, October 1, October 16, October 30 — same size every time, roughly every two weeks, while the price beneath the clips climbed from the mid-$30s to the low $60s. In March 2026 the clip resizes to 7,500 shares and keeps ticking through $59 to $84.92 by July. The fixed size and fixed calendar are the signature of a prearranged selling program, and its most striking property is what it ignored: the CEO's own sale prints more than doubled inside twelve months and the cadence never flinched. The one genuinely discretionary row points the other way — a December 2025 net exercise of 71,233 options struck at $6.67, retained rather than dumped, with the only outright purchase in the entire 864-row file being 50,000 shares of Gamida Cell in 2022.
Companies
Transaction History
Source: SEC EDGAR Form 4 insider transaction filings.
Company | Type | Shares | Price | Value | Shares After | Date | SEC |
|---|---|---|---|---|---|---|---|
CYTOKINETICS INC CYTK | Exercise | 7,500 | $10.60 | $80K | 171,745 | 8/10/2026 Filed: 8/10/2026 | Filing → |
CYTOKINETICS INC CYTK | Sale | 7,500 | $76.76 | $576K | 377,820 | 8/10/2026 Filed: 8/10/2026 | Filing → |
CYTOKINETICS INC CYTK | Exercise | 7,500 | $10.60 | $80K | 385,320 | 8/10/2026 Filed: 8/10/2026 | Filing → |
CYTOKINETICS INC CYTK | Exercise | 7,500 | $10.60 | $80K | 179,245 | 7/27/2026 Filed: 7/27/2026 | Filing → |
CYTOKINETICS INC CYTK | Sale | 7,500 | $80.87 | $607K | 377,820 | 7/27/2026 Filed: 7/27/2026 | Filing → |
CYTOKINETICS INC CYTK | Exercise | 7,500 | $10.60 | $80K | 385,320 | 7/27/2026 Filed: 7/27/2026 | Filing → |
CYTOKINETICS INC CYTK | Exercise | 7,490 | $10.60 | $79K | 186,745 | 7/13/2026 Filed: 7/13/2026 | Filing → |
CYTOKINETICS INC CYTK | Sale | 7,490 | $82.02 | $614K | 377,820 | 7/13/2026 Filed: 7/13/2026 | Filing → |
CYTOKINETICS INC CYTK | Exercise | 7,490 | $10.60 | $79K | 385,310 | 7/13/2026 Filed: 7/13/2026 | Filing → |
CYTOKINETICS INC CYTK | Sale | 10 | $82.02 | $820 | 377,820 | 7/13/2026 Filed: 7/13/2026 | Filing → |
CYTOKINETICS INC CYTK | Sale | 7,500 | $84.92 | $637K | 377,830 | 7/1/2026 Filed: 7/1/2026 | Filing → |
CYTOKINETICS INC CYTK | Sale | 7,500 | $77.21 | $579K | 392,830 | 5/27/2026 Filed: 5/27/2026 | Filing → |
CYTOKINETICS INC CYTK | Sale | 7,500 | $59.62 | $447K | 407,830 | 4/29/2026 Filed: 4/29/2026 | Filing → |
CYTOKINETICS INC CYTK | Sale | 7,500 | $65.38 | $490K | 415,330 | 4/15/2026 Filed: 4/15/2026 | Filing → |
CYTOKINETICS INC CYTK | Sale | 7,500 | $66.63 | $500K | 422,830 | 4/1/2026 Filed: 4/1/2026 | Filing → |
CYTOKINETICS INC CYTK | Sale | 7,931 | $60.72 | $482K | 391,673 | 3/9/2026 Filed: 3/9/2026 | Filing → |
CYTOKINETICS INC CYTK | Tax Payment | 2,935 | $62.72 | $184K | 399,604 | 12/22/2025 Filed: 12/29/2025 | Filing → |
CYTOKINETICS INC CYTK | Award | 5,765 | - | - | 402,539 | 12/22/2025 Filed: 12/29/2025 | Filing → |
CYTOKINETICS INC CYTK | Award | 5,765 | - | - | 396,774 | 12/22/2025 Filed: 12/29/2025 | Filing → |
CYTOKINETICS INC CYTK | Exercise | 16,506 | - | - | 0 | 12/22/2025 Filed: 12/23/2025 | Filing → |
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