| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Chief Product Officer
2 companies
John S. Vieceli is Chief Product Officer at QSIAW, with reported holdings spanning 2 companies. The disclosed holdings are worth an estimated $2.0M at current prices.
Our model assigns John S. Vieceli a middling insider score of 65/100, based on 12 past trades. Over a 12-month horizon, 71.4% of those trades were profitable, with an average 12-month return of +7.6%.
John S. Vieceli's largest disclosed position is in QSI as Chief Product Officer, worth about $1.0M. The QSI filings lean toward selling, a net 106,691 shares.
John S. Vieceli has 10 Form 4 filings on record from September 2024 to June 2026, across 2 companies: Chief Product Officer at Quantum-Si (QSI), 2024–2026; Chief Product Officer at Quantum-Si (QSIAW), 2026.
The 15 reported transactions were 12 open-market sales, 2 stock awards and 1 option or other derivative award.
Counted by filing, the open-market trades come to no purchases and 8 sales worth about $158K.
The largest open-market sale was 21,923 shares of QSI at an average $1.61 on June 23, 2025, about $35K. Twelve months later QSI was down 47%.
None of the 8 sales since April 2023 was marked as made under a Rule 10b5-1 trading plan.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Jun 23, 2026 | QSI Quantum-Si Incorporated | Chief Product Officer | Sell | 30,223 | $0.93 | $28,052.96 | -2.6% | -14.1% | - | |
| Mar 23, 2026 | QSIAW Quantum-Si Incorporated | Chief Product Officer | Sell | 21,997 | $0.84 | $18,416.17 | -1.8% | 0.0% | - | |
| Dec 22, 2025 | QSI Quantum-Si Inc | Chief Product Officer | Sell | 21,927 | $1.28 | $27,978.85 | -2.7% | -29.3% | - | |
| Sep 23, 2025 | QSI Quantum-Si Inc | Chief Product Officer | Sell | 19,686 | $1.66 | $32,655.14 | -2.3% | -20.6% | -52.6% | |
| Jun 23, 2025 | QSI Quantum-Si Inc | Chief Product Officer | Sell | 21,923 | $1.61 | $35,381.53 | -2.5% | +3.0% | -46.7% | |
| Mar 21, 2025 | QSI Quantum-Si Inc | Chief Product Officer | Sell | 4,317 | $1.39 | $5,981.20 | -0.5% | +18.9% | -41.9% | |
| Dec 23, 2024 | QSI Quantum-Si Inc | Chief Product Officer | Sell | 4,306 | $1.29 | $5,570.24 | -2.6% | +13.0% | -6.1% | |
| Sep 24, 2024 | QSI Quantum-Si Inc | Chief Product Officer | Sell | 4,309 | $0.94 | $4,043.70 | -2.5% | +40.0% | +72.1% |