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 |
|---|---|---|---|---|---|
| Jeffrey Alan Hawkins | President CEO | 2025-06-23 | 23,705 | $1.61 | $38.26kSell |
| Jeffry R. Keyes | Chief Financial Officer | 2025-06-23 | 8,624 | $1.61 | $13.92kSell |
| John S. Vieceli | Chief Product Officer | 2025-06-23 | 21,923 | $1.61 | $35.38kSell |
| Christian Lapointe | GC Corp. Secretary | 2025-06-23 | 11,946 | $1.61 | $19.28kSell |
| Jeffry R. Keyes | Chief Financial Officer | 2025-03-21 | 8,626 | $1.39 | $11.95kSell |
| Jeffrey Alan Hawkins | President CEO | 2025-03-21 | 23,707 | $1.39 | $32.83kSell |
| Christian Lapointe | General Counsel Corp. Secr. | 2025-03-21 | 4,896 | $1.39 | $6.78kSell |
| John S. Vieceli | Chief Product Officer | 2025-03-21 | 4,317 | $1.39 | $5.98kSell |
| Jonathan M. Rothberg | Director | 2024-12-27 | 42,313 | $4.10 | $173.31kSell |
| Jonathan M. Rothberg | Director | 2024-12-27 | 834,253 | $3.30 | $2.76MSell |
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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 | 26.20% | 48,067,448 | $70.18M | Insider |
| 4c Holdings I LLC | 9.78% | 17,943,750 | $26.20M | Insider |
| 2012 Jmr Trust Common LLC | 6.80% | 12,480,108 | $18.22M | Insider |
| Blackrock Inc | 5.14% | 9,440,243 | $13.78M | Institution |
| Ark Investment Management LLC | 4.75% | 8,713,501 | $12.72M | Institution |
| James B. Tananbaum | 4.59% | 8,424,317 | $12.30M | Insider |
| Vanguard Group Inc | 3.76% | 6,892,862 | $10.06M | Institution |
| Nikko Asset Management Americas Inc | 3.17% | 5,811,430 | $8.48M | Institution |
| Sumitomo Mitsui Trust Group Inc | 3.17% | 5,811,430 | $8.48M | Institution |
| Millennium Management LLC | 2.14% | 3,934,285 | $5.74M | Institution |
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.