Quantum-si Incorporated · NASDAQ:QSI
ROTHBERG JONATHAN M reported a 7.80% stake in Quantum-si Incorporated (Schedule 13D/A)
Event Sep 9, 2025 · Filed Sep 11, 2025
ROTHBERG JONATHAN M reported a 7.80% stake in Quantum-si Incorporated, 14,276,415 shares, with active intent on Sep 9, 2025. Filed Sep 11, 2025 (Schedule 13D/A).
- Stake
- 7.80%
- Shares
- 14,276,415
- Intent
- Active
- What changed
- Stake changed
- Filed together
- 6 holders
The filing in full
| Holder | Stake | Shares |
|---|---|---|
| ROTHBERG JONATHAN M | 7.80% | 14,276,415 |
| ROTHBERG JONATHAN M. | 100.00% | 19,937,500 |
| 23rd Century Capital LLC | 1.05% | 1,917,067 |
| 2012 JMR Trust Common, LLC | 0% | |
| 4C Holdings I, LLC | 90.00% | 17,943,750 |
| 4C Holdings V, LLC | 10.00% | 1,993,750 |
Source
Related
- Quantum-si Incorporated
- Rothberg Jonathan M
- Quantum-si Incorporated shareholders
- Schedule 13D/A · Rothberg Jonathan M · Aug 28, 2026
- Schedule 13D/A · Rothberg Jonathan M · Dec 31, 2024
- Form 4 · Hawkins Jeffrey Alan · Sep 23, 2026
- Form 4 · Keyes Jeffry R. · Sep 23, 2026
- Form 4 · LaPointe Christian · Sep 23, 2026
- Schedule 13G/A · BlackRock, Inc. · Jul 29, 2026
- Form 4 · LaPointe Christian · Jun 24, 2026