Insider trades › John S. Vieceli
John S. Vieceli
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 Jun 24, 2026
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Using 13F.ai, list John S. Vieceli'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 S. Vieceli 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 S. Vieceli?
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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 |
|---|---|---|
| QSI Quantum-Si Incorporated | Chief Product Officer | Jun 24, 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 | ||||||
|---|---|---|---|---|---|---|---|
| Jun 23, 2026 | QSI Quantum-Si Incorporated | Sale | 15,112 | $0.90 | $13.6K | +27.8% | Form 4 ↗ |
| Jun 22, 2026 | QSI Quantum-Si Incorporated | Sale | 15,111 | $0.96 | $14.5K | +23.5% | Form 4 ↗ |
| Mar 23, 2026 | QSI Quantum-Si Incorporated | Sale | 11,239 | $0.83 | $9,328 | +13.0% | Form 4 ↗ |
| Mar 20, 2026 | QSI Quantum-Si Incorporated | Sale | 10,758 | $0.85 | $9,144 | +19.8% | Form 4 ↗ |
| Dec 22, 2025 | QSI Quantum-Si Incorporated | Sale | 21,927 | $1.28 | $28.1K | -19.6% | Form 4 ↗ |
| Sep 23, 2025 | QSI Quantum-Si Incorporated | Sale | 9,843 | $1.64 | $16.1K | -41.9% | Form 4 ↗ |
| Sep 22, 2025 | QSI Quantum-Si Incorporated | Sale | 9,843 | $1.68 | $16.5K | -45.5% | Form 4 ↗ |
| Jun 23, 2025 | QSI Quantum-Si Incorporated | Sale | 21,923 | $1.61 | $35.3K | -56.0% | Form 4 ↗ |
| Mar 21, 2025 | QSI Quantum-Si Incorporated | Sale | 4,317 | $1.39 | $6,001 | -54.7% | Form 4 ↗ |
| Dec 23, 2024 | QSI Quantum-Si Incorporated | Sale | 4,306 | $1.29 | $5,555 | -39.1% | 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.