Insiders / Braunstein Scott
Braunstein Scott
CIK 1643875personinsider
Companies
2
First seen
Feb 2, 2026
Last activity
Mar 5, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| RAPT Therapeutics, Inc. · RAPT | 0 | — |
| Caribou Biosciences, Inc. · CRBU | — | — |
All securities held
1 position · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Caribou Biosciences, Inc. | Option to purchase Common StockDerivative | 45,000 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Jan 30, 2026 | Grant | RAPT RAPT Therapeutics, Inc. Common Stock | $0 | +5K | 4,956 0.02% of shares | low |
| Mar 3, 2026 | Other | RAPT RAPT Therapeutics, Inc. Director Stock Option (right to buy) | — | -25K -100.00% | 0 0.00% of shares | low |
| Feb 20, 2026 | Grant | CRBU Caribou Biosciences, Inc. Option to purchase Common Stock | — | +45K | 45,000 0.05% of shares | low |