Insider trades › Robert I. Blum
Robert I. Blum
A corporate insider: an officer, director or owner of more than 10% of a company. Insiders report their trades to the SEC on Form 4The form insiders use to report each purchase or sale of their company's stock. It is due within two business days of the trade. · Last filing Nov 2, 2026
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Using 13F.ai, list Robert I. Blum's open-market buys and sells across companies in the last two years, with the Form 4 links.
Using 13F.ai, how did the stocks Robert I. Blum bought perform after the purchase compared with the S&P 500?
Using 13F.ai, are other insiders at the same companies buying or selling at the same time as Robert I. Blum?
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Buying and selling by quarter
Dollars bought and sold on the open market over the last two years.
Bought Sold
By trade date, using the shares and price reported for each trade. Stock grants, option exercises and shares withheld for tax are left out.
Roles
The companies where this person reports as an insider, and their position at each, most recent first.
| Company | Role | Last filed |
|---|---|---|
| CYTK Cytokinetics, Incorporated | President & CEO, Director | Nov 2, 2026 |
Roles come from the filings themselves and can change over time.
Latest open-market trades
Purchases and sales at every company, most recent filing first.
| How the stock has done since the trade date, measured against the S&P 500 over the same days. It describes the stock, not the trader's actual gain or loss. | Filing | ||||||
|---|---|---|---|---|---|---|---|
| Nov 2, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,500 | $62.81 | $471.1K | -9.8% | Form 4 ↗ |
| Sep 28, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,500 | $65.46 | $490.9K | -13.7% | Form 4 ↗ |
| Sep 15, 2026 | CYTK Cytokinetics, Incorporated | Sale | 97,926 | $69.33 | $6.8M | -18.6% | Form 4 ↗ |
| Sep 14, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,500 | $73.44 | $550.8K | -21.7% | Form 4 ↗ |
| Aug 31, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,500 | $70.24 | $526.8K | -19.2% | Form 4 ↗ |
| Aug 10, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,500 | $76.76 | $575.7K | -25.2% | Form 4 ↗ |
| Jul 27, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,500 | $80.87 | $606.5K | -32.4% | Form 4 ↗ |
| Jul 13, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,490 | $82.02 | $614.3K | -32.4% | Form 4 ↗ |
| Jul 13, 2026 | CYTK Cytokinetics, Incorporated | Sale | 10 | $82.02 | $820 | -32.4% | Form 4 ↗ |
| Jul 1, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,500 | $84.92 | $636.9K | -35.3% | Form 4 ↗ |
| Jun 15, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,500 | $70.46 | $528.5K | -21.3% | Form 4 ↗ |
| May 27, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,500 | $77.21 | $579.1K | -27.8% | Form 4 ↗ |
| May 14, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,500 | $77.92 | $584.4K | -29.5% | Form 4 ↗ |
| Apr 29, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,500 | $59.62 | $447.1K | -11.8% | Form 4 ↗ |
| Apr 15, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,500 | $65.38 | $490.4K | -21.9% | Form 4 ↗ |
| Apr 1, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,500 | $66.63 | $499.7K | -30.9% | Form 4 ↗ |
| Mar 17, 2026 | CYTK Cytokinetics, Incorporated | Sale | 12,673 | $62.15 | $787.6K | -22.1% | Form 4 ↗ |
| Mar 17, 2026 | CYTK Cytokinetics, Incorporated | Sale | 23,928 | $62.15 | $1.5M | -22.1% | Form 4 ↗ |
| Mar 9, 2026 | CYTK Cytokinetics, Incorporated | Sale | 7,931 | $60.72 | $481.6K | -21.3% | Form 4 ↗ |
| Oct 30, 2025 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $62.86 | $314.3K | -20.8% | Form 4 ↗ |
| Oct 16, 2025 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $60.03 | $300.1K | -19.0% | Form 4 ↗ |
| Oct 1, 2025 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $55.05 | $275.3K | -12.3% | Form 4 ↗ |
| Sep 15, 2025 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $49.77 | $248.8K | -0.6% | Form 4 ↗ |
| Sep 2, 2025 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $48.76 | $243.8K | -4.7% | Form 4 ↗ |
| Aug 15, 2025 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $38.42 | $192.1K | +27.9% | Form 4 ↗ |
| Jul 29, 2025 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $36.45 | $182.3K | +37.6% | Form 4 ↗ |
| Jul 14, 2025 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $38.15 | $190.8K | +24.8% | Form 4 ↗ |
| Jul 1, 2025 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $33.55 | $167.8K | +44.7% | Form 4 ↗ |
| Jun 16, 2025 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $33.80 | $169.0K | +41.0% | Form 4 ↗ |
| Jun 2, 2025 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $31.22 | $156.1K | +52.6% | Form 4 ↗ |
| May 16, 2025 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $30.93 | $154.7K | +54.1% | Form 4 ↗ |
| Apr 29, 2025 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $40.96 | $204.8K | -0.1% | Form 4 ↗ |
| Apr 10, 2025 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $36.77 | $183.8K | +4.5% | Form 4 ↗ |
| Mar 31, 2025 | CYTK Cytokinetics, Incorporated | Sale | 15,000 | $40.75 | $611.3K | +4.8% | Form 4 ↗ |
| Mar 17, 2025 | CYTK Cytokinetics, Incorporated | Sale | 25,000 | $44.65 | $1.1M | -8.0% | Form 4 ↗ |
| Mar 17, 2025 | CYTK Cytokinetics, Incorporated | Sale | 12,648 | $44.38 | $561.3K | -8.0% | Form 4 ↗ |
| Mar 6, 2025 | CYTK Cytokinetics, Incorporated | Sale | 16,970 | $43.44 | $737.2K | -2.0% | Form 4 ↗ |
| Mar 5, 2025 | CYTK Cytokinetics, Incorporated | Sale | 25,000 | $43.23 | $1.1M | -1.5% | Form 4 ↗ |
| Mar 3, 2025 | CYTK Cytokinetics, Incorporated | Sale | 8,743 | $42.88 | $374.9K | +1.6% | Form 4 ↗ |
| Dec 2, 2024 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $50.76 | $253.8K | -14.1% | Form 4 ↗ |
| Nov 18, 2024 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $50.55 | $252.8K | -20.2% | Form 4 ↗ |
| Nov 1, 2024 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $51.63 | $258.1K | -23.8% | Form 4 ↗ |
| Oct 9, 2024 | CYTK Cytokinetics, Incorporated | Sale | 5,000 | $55.61 | $278.1K | -27.5% | Form 4 ↗ |
Each row links to its Form 4. Since trade compares the stock’s move from the close on the trade date (or the next trading day) to its latest close with the S&P 500 over the same days, adjusted for splits and excluding dividends. It describes the stock, not what the trader made: we don’t know their purchase price, position size or later sales. A dash means the trade isn’t matched to a listed stock, or there is no closing price after it yet.
When several people report on the same filing, we list it under the first one named, so trades by someone usually listed second may be missing here. Information, not investment advice: see the disclaimer.