John S. Vieceli, Chief Product Officer at Quantum-Si Inc (QSI), sold 43,994 shares at $0.85 ($37K) on 2026-03-20, disclosed to the SEC on 2026-03-24.
Open-market sale of $37k QSI by Chief Product Officer. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $0.85 | 10,758 | $9K | 24.7% |
| 2 | $0.85 | 10,758 | $9K | 24.8% |
| 3 | $0.83 | 11,239 | $9K | 25.2% |
| 4 | $0.83 | 11,239 | $9K | 25.3% |
| Total | $0.84 avg | 43,994 | $37K | 100% |
| Filing → |
| QSI | SELL | 2025-09-24 | $33K | — | Filing → |
| QSI | SELL | 2025-06-24 | $35K | — | Filing → |
| QSI | SELL | 2025-03-24 | $6K | — | Filing → |