NASDAQ: QSIQuantum Si Inc Stock Ownership - Who owns Quantum Si?
Insider buying vs selling
Have Quantum Si Inc insiders been buying or selling?
Buy
Sell
| Name | Role | Date | Shares | Price | Value |
|---|---|---|---|---|---|
| Christian Lapointe | Sec | 2026-09-22 | 4,721 | $0.76 | $3.59kSell |
| Jeffry R. Keyes | CFO | 2026-09-22 | 2,493 | $0.76 | $1.90kSell |
| Jeffrey Alan Hawkins | CEO;Pres | 2026-09-22 | 9,709 | $0.76 | $7.39kSell |
| Jeffrey Alan Hawkins | CEO;Pres | 2026-09-21 | 20,143 | $0.76 | $15.23kSell |
| Christian Lapointe | Sec | 2026-09-21 | 9,795 | $0.76 | $7.41kSell |
| Jeffry R. Keyes | CFO | 2026-09-21 | 5,172 | $0.76 | $3.91kSell |
| John S. Vieceli | Chief Product Officer | 2026-06-23 | 15,112 | $0.90 | $13.59kSell |
| Jeffrey Alan Hawkins | President CEO | 2026-06-23 | 11,311 | $0.90 | $10.17kSell |
| Jeffry R. Keyes | Chief Financial Officer | 2026-06-23 | 4,117 | $0.90 | $3.70kSell |
| Christian Lapointe | GC Corp. Secretary | 2026-06-23 | 7,794 | $0.90 | $7.01kSell |
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Net Insider Buy/Sell (L12M) Ownership
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QSI Shareholders
What type of owners hold Quantum Si Inc stock?
Institutional
Insider
Retail
| Name | Hold | Shares | Value | Type |
|---|---|---|---|---|
| Jonathan M. Rothberg | 23.19% | 50,765,194 | $77.67M | Insider |
| 4c Holdings I LLC | 8.20% | 17,943,750 | $27.45M | Insider |
| 2012 Jmr Trust Common LLC | 5.70% | 12,480,108 | $19.09M | Insider |
| James B. Tananbaum | 3.85% | 8,424,317 | $12.89M | Insider |
| Jeffrey Alan Hawkins | 1.66% | 3,639,950 | $5.57M | Insider |
| John Stark Viii | 0.90% | 1,977,368 | $3.03M | Insider |
| Jeffry R. Keyes | 0.78% | 1,716,684 | $2.63M | Insider |
| Kevin Rakin | 0.56% | 1,220,512 | $1.87M | Insider |
| Christian Lapointe | 0.53% | 1,167,913 | $1.79M | Insider |
| John S. Vieceli | 0.52% | 1,140,434 | $1.74M | Insider |
QSI vs Biotech Stocks
Quantum Si Stock Ownership FAQ
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Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.
Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.