Nicholson Garry A
SEC insider (Form 3/4/5 filer). CIK 0001640861. Director at TScan Therapeutics, Inc. (TCRX) and 2 other issuers. 17 reported Form 4/5 transactions since Sep 2024; latest on May 20, 2026. Located in BRISBANE, CA.
Companies Nicholson Garry A has filed insider reports for
- TScan Therapeutics, Inc. (TCRX): Director
- Day One Biopharmaceuticals, Inc. (DAWN): Director
- G1 Therapeutics, Inc. (GTHX): Director
Nicholson Garry A
CIK: 0001640861
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)
- May 20, 2026TCRX
TScan Therapeutics, Inc.
AwardDirectStock Option (Right to Buy)
67K shares- - Apr 23, 2026DAWN
Day One Biopharmaceuticals, Inc.
DispositionDirectStock Option (right to buy Common Stock)
22.5K shares- - Apr 23, 2026DAWN
Day One Biopharmaceuticals, Inc.
DispositionDirectRestricted Stock Unit (RSU)
15K shares- - Apr 23, 2026DAWN
Day One Biopharmaceuticals, Inc.
DispositionDirectStock Option (right to buy Common Stock)
33.9K shares- - Apr 23, 2026DAWN
Day One Biopharmaceuticals, Inc.
DispositionDirectStock Option (right to buy Common Stock)
37.5K shares- - Apr 23, 2026DAWN
Day One Biopharmaceuticals, Inc.
DispositionDirectStock Option (right to buy Common Stock)
32.3K shares- - Nov 6, 2025DAWN
Day One Biopharmaceuticals, Inc.
AwardDirectStock Option (right to buy Common Stock)
37.5K shares- - Nov 6, 2025DAWN
Day One Biopharmaceuticals, Inc.
AwardDirectStock Option (right to buy Common Stock)
32.3K shares- - Nov 6, 2025DAWN
Day One Biopharmaceuticals, Inc.
DispositionDirectStock Option (right to buy Common Stock)
32.3K shares- - Nov 6, 2025DAWN
Day One Biopharmaceuticals, Inc.
DispositionDirectStock Option (right to buy Common Stock)
33.9K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| May 20, 2026 |  TCRX TScan Therapeutics, Inc. | Award Stock Option (Right to Buy) | 67,000 | - | - | Direct |
| Apr 23, 2026 |  DAWN Day One Biopharmaceuticals, Inc. | Disposition Stock Option (right to buy Common Stock) | 22,500 | - | - | Direct |
| Apr 23, 2026 | DAWN Day One Biopharmaceuticals, Inc. | Disposition Restricted Stock Unit (RSU) | 15,000 | - | - | Direct |
| Apr 23, 2026 | DAWN Day One Biopharmaceuticals, Inc. | Disposition Stock Option (right to buy Common Stock) | 33,900 | - | - | Direct |
| Apr 23, 2026 | DAWN Day One Biopharmaceuticals, Inc. | Disposition Stock Option (right to buy Common Stock) | 37,500 | - | - | Direct |
| Apr 23, 2026 | DAWN Day One Biopharmaceuticals, Inc. | Disposition Stock Option (right to buy Common Stock) | 32,335 | - | - | Direct |
| Nov 6, 2025 | DAWN Day One Biopharmaceuticals, Inc. | Award Stock Option (right to buy Common Stock) | 37,500 | - | - | Direct |
| Nov 6, 2025 | DAWN Day One Biopharmaceuticals, Inc. | Award Stock Option (right to buy Common Stock) | 32,335 | - | - | Direct |
| Nov 6, 2025 | DAWN Day One Biopharmaceuticals, Inc. | Disposition Stock Option (right to buy Common Stock) | 32,335 | - | - | Direct |
| Nov 6, 2025 | DAWN Day One Biopharmaceuticals, Inc. | Disposition Stock Option (right to buy Common Stock) | 33,900 | - | - | Direct |
1-10 of 17 transactions