Blum Robert I
Blum Robert I is a corporate insider at CYTOKINETICS INC (CYTK) filing SEC Form 4 transactions. 884 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 | Sale | 97,926 | $69.33 | $6.79M | 0 | 9/15/2026 Filed: 9/14/2026 | Filing → |
CYTOKINETICS INC CYTK | Exercise | 7,500 | $10.60 | $80K | 156,745 | 9/14/2026 Filed: 9/14/2026 | Filing → |
CYTOKINETICS INC CYTK | Gift | 97,926 | - | - | 97,926 | 9/14/2026 Filed: 9/14/2026 | Filing → |
CYTOKINETICS INC CYTK | Gift | 97,926 | - | - | 278,544 | 9/14/2026 Filed: 9/14/2026 | Filing → |
CYTOKINETICS INC CYTK | Gift | 1,350 | - | - | 376,470 | 9/14/2026 Filed: 9/14/2026 | Filing → |
CYTOKINETICS INC CYTK | Sale | 7,500 | $73.44 | $551K | 377,820 | 9/14/2026 Filed: 9/14/2026 | Filing → |
CYTOKINETICS INC CYTK | Exercise | 7,500 | $10.60 | $80K | 385,320 | 9/14/2026 Filed: 9/14/2026 | Filing → |
CYTOKINETICS INC CYTK | Exercise | 7,500 | $10.60 | $80K | 164,245 | 8/31/2026 Filed: 8/31/2026 | Filing → |
CYTOKINETICS INC CYTK | Sale | 7,500 | $70.24 | $527K | 377,820 | 8/31/2026 Filed: 8/31/2026 | Filing → |
CYTOKINETICS INC CYTK | Exercise | 7,500 | $10.60 | $80K | 385,320 | 8/31/2026 Filed: 8/31/2026 | Filing → |
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 → |
Try asking...