Insider trades › John Fesko
John Fesko
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 4, 2026
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Using 13F.ai, list John Fesko'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 John Fesko 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 John Fesko?
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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 |
|---|---|---|
| NTRA Natera, Inc. | PRESIDENT, CHIEF BUS. OFFICER | Nov 4, 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 | NTRA Natera, Inc. | Sale | 7 | $388.20 | $2,717 | -16.1% | Form 4 ↗ |
| Nov 2, 2026 | NTRA Natera, Inc. | Sale | 295 | $400.29 | $118.1K | -16.1% | Form 4 ↗ |
| Oct 28, 2026 | NTRA Natera, Inc. | Sale | 898 | $426.34 | $382.9K | -22.5% | Form 4 ↗ |
| Oct 27, 2026 | NTRA Natera, Inc. | Sale | 781 | $406.00 | $317.1K | -20.3% | Form 4 ↗ |
| Aug 10, 2026 | NTRA Natera, Inc. | Sale | 6,517 | $321.53 | $2.1M | +2.6% | Form 4 ↗ |
| Aug 3, 2026 | NTRA Natera, Inc. | Sale | 295 | $267.99 | $79.1K | +18.5% | Form 4 ↗ |
| Jul 28, 2026 | NTRA Natera, Inc. | Sale | 931 | $254.07 | $236.5K | +24.7% | Form 4 ↗ |
| Jul 27, 2026 | NTRA Natera, Inc. | Sale | 782 | $260.49 | $203.7K | +21.6% | Form 4 ↗ |
| May 26, 2026 | NTRA Natera, Inc. | Sale | 1,438 | $202.84 | $291.7K | +58.3% | Form 4 ↗ |
| May 1, 2026 | NTRA Natera, Inc. | Sale | 291 | $206.16 | $60.0K | +49.3% | Form 4 ↗ |
| Apr 27, 2026 | NTRA Natera, Inc. | Sale | 771 | $203.75 | $157.1K | +50.6% | Form 4 ↗ |
| Apr 27, 2026 | NTRA Natera, Inc. | Sale | 917 | $204.39 | $187.4K | +50.6% | Form 4 ↗ |
| Mar 10, 2026 | NTRA Natera, Inc. | Sale | 707 | $204.13 | $144.3K | +49.0% | Form 4 ↗ |
| Feb 3, 2026 | NTRA Natera, Inc. | Sale | 1,179 | $230.77 | $272.1K | +30.7% | Form 4 ↗ |
| Feb 3, 2026 | NTRA Natera, Inc. | Sale | 2,415 | $231.14 | $558.2K | +30.7% | Form 4 ↗ |
| Jan 28, 2026 | NTRA Natera, Inc. | Sale | 928 | $237.66 | $220.5K | +26.8% | Form 4 ↗ |
| Jan 27, 2026 | NTRA Natera, Inc. | Sale | 784 | $240.53 | $188.6K | +24.3% | Form 4 ↗ |
| Jan 21, 2026 | NTRA Natera, Inc. | Sale | 339 | $235.00 | $79.7K | +21.4% | Form 4 ↗ |
| Jan 20, 2026 | NTRA Natera, Inc. | Sale | 17,806 | $234.74 | $4.2M | +24.5% | Form 4 ↗ |
| Oct 28, 2025 | NTRA Natera, Inc. | Sale | 928 | $191.46 | $177.7K | +58.5% | Form 4 ↗ |
| Oct 27, 2025 | NTRA Natera, Inc. | Sale | 781 | $192.32 | $150.2K | +55.9% | Form 4 ↗ |
| Oct 21, 2025 | NTRA Natera, Inc. | Sale | 339 | $187.95 | $63.7K | +58.4% | Form 4 ↗ |
| Aug 14, 2025 | NTRA Natera, Inc. | Sale | 672 | $155.46 | $104.5K | +84.4% | Form 4 ↗ |
| Aug 14, 2025 | NTRA Natera, Inc. | Sale | 6 | $155.30 | $932 | +84.4% | Form 4 ↗ |
| Jul 28, 2025 | NTRA Natera, Inc. | Sale | 1,710 | $139.81 | $239.1K | +112.8% | Form 4 ↗ |
| Jul 21, 2025 | NTRA Natera, Inc. | Sale | 339 | $139.29 | $47.2K | +106.9% | Form 4 ↗ |
| May 27, 2025 | NTRA Natera, Inc. | Sale | 1,438 | $156.85 | $225.6K | +75.4% | Form 4 ↗ |
| Apr 28, 2025 | NTRA Natera, Inc. | Sale | 1,709 | $152.18 | $260.1K | +71.6% | Form 4 ↗ |
| Apr 21, 2025 | NTRA Natera, Inc. | Sale | 339 | $145.54 | $49.3K | +77.5% | Form 4 ↗ |
| Apr 21, 2025 | NTRA Natera, Inc. | Sale | 4 | $146.10 | $584 | +77.5% | Form 4 ↗ |
| Mar 17, 2025 | NTRA Natera, Inc. | Sale | 793 | $146.03 | $115.8K | +80.8% | Form 4 ↗ |
| Mar 17, 2025 | NTRA Natera, Inc. | Sale | 2 | $149.58 | $299 | +80.8% | Form 4 ↗ |
| Feb 6, 2025 | NTRA Natera, Inc. | Sale | 663 | $177.77 | $117.9K | +57.8% | Form 4 ↗ |
| Jan 29, 2025 | NTRA Natera, Inc. | Sale | 913 | $165.87 | $151.4K | +64.3% | Form 4 ↗ |
| Jan 29, 2025 | NTRA Natera, Inc. | Sale | 3,115 | $165.87 | $516.7K | +64.3% | Form 4 ↗ |
| Jan 29, 2025 | NTRA Natera, Inc. | Sale | 2 | $167.39 | $335 | +64.3% | Form 4 ↗ |
| Jan 22, 2025 | NTRA Natera, Inc. | Sale | 53 | $171.96 | $9,114 | +61.2% | Form 4 ↗ |
| Jan 22, 2025 | NTRA Natera, Inc. | Sale | 21,175 | $164.95 | $3.5M | +61.2% | Form 4 ↗ |
| Dec 23, 2024 | NTRA Natera, Inc. | Sale | 1 | $157.95 | $158 | +70.1% | Form 4 ↗ |
| Dec 23, 2024 | NTRA Natera, Inc. | Sale | 668 | $159.60 | $106.6K | +70.1% | Form 4 ↗ |
| Oct 28, 2024 | NTRA Natera, Inc. | Sale | 929 | $118.21 | $109.8K | +134.5% | Form 4 ↗ |
| Oct 22, 2024 | NTRA Natera, Inc. | Sale | 199 | $120.07 | $23.9K | +136.7% | Form 4 ↗ |
| Oct 21, 2024 | NTRA Natera, Inc. | Sale | 342 | $120.76 | $41.3K | +135.6% | 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.