Braunstein Scott
SEC insider (Form 3/4/5 filer). CIK 0001643875. Director at AtaiBeckley Inc. (ATAI) and 4 other issuers. 17 reported Form 4/5 transactions since Sep 2024; latest on Sep 11, 2026. Located in NEW YORK, NY.
Companies Braunstein Scott has filed insider reports for
- AtaiBeckley Inc. (ATAI): Director
- RAPT Therapeutics, Inc. (RAPT): Director
- Caribou Biosciences, Inc. (CRBU): Director
- ATAI Life Sciences N.V. (ATAI): Director
- MARINUS PHARMACEUTICALS, INC. (MRNS): Director, Officer, CHAIRMAN AND CEO
Braunstein Scott
CIK: 0001643875
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (17 total)
- Sep 11, 2026ATAI
AtaiBeckley Inc.
DispositionDirectStock Option
103K shares- - Sep 11, 2026ATAI
AtaiBeckley Inc.
DispositionDirectStock Option
208.1K shares- - Sep 11, 2026ATAI
AtaiBeckley Inc.
DispositionDirectStock Option
56.8K shares- - Sep 11, 2026ATAI
AtaiBeckley Inc.
DispositionDirectStock Option
206K shares- - Jun 4, 2026ATAI
AtaiBeckley Inc.
AwardDirectStock Option
86.1K shares- - Jun 4, 2026ATAI
AtaiBeckley Inc.
AwardDirectStock Option
122K shares- - Mar 3, 2026RAPT
RAPT Therapeutics, Inc.
Tender OfferDirect5K shares- - Mar 3, 2026RAPT
RAPT Therapeutics, Inc.
DispositionDirectDirector Stock Option (right to buy)
25K shares- - Feb 20, 2026CRBU
Caribou Biosciences, Inc.
AwardDirectOption to purchase Common Stock
45K shares- - Jan 30, 2026RAPT
RAPT Therapeutics, Inc.
AwardDirect5K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 11, 2026 |  ATAI AtaiBeckley Inc. | Disposition Stock Option | 103,000 | - | - | Direct |
| Sep 11, 2026 | ATAI AtaiBeckley Inc. | Disposition Stock Option | 208,063 | - | - | Direct |
| Sep 11, 2026 | ATAI AtaiBeckley Inc. | Disposition Stock Option | 56,818 | - | - | Direct |
| Sep 11, 2026 | ATAI AtaiBeckley Inc. | Disposition Stock Option | 206,000 | - | - | Direct |
| Jun 4, 2026 | ATAI AtaiBeckley Inc. | Award Stock Option | 86,095 | - | - | Direct |
| Jun 4, 2026 | ATAI AtaiBeckley Inc. | Award Stock Option | 121,968 | - | - | Direct |
| Mar 3, 2026 |  RAPT RAPT Therapeutics, Inc. | Tender Offer | 4,956 | - | $0 | Direct |
| Mar 3, 2026 | RAPT RAPT Therapeutics, Inc. | Disposition Director Stock Option (right to buy) | 25,000 | - | - | Direct |
| Feb 20, 2026 |  CRBU Caribou Biosciences, Inc. | Award Option to purchase Common Stock | 45,000 | - | - | Direct |
| Jan 30, 2026 | RAPT RAPT Therapeutics, Inc. | Award | 4,956 | - | $0 | Direct |
1-10 of 17 transactions