Chow Gregory K.
SEC insider (Form 3/4/5 filer). CIK 0001761333. CFO at SUTRO BIOPHARMA, INC. (STRO). 7 reported Form 4/5 transactions since Sep 2024; latest on Jun 2, 2026. Located in SOUTH SAN FRANCISCO, CA.
Companies Chow Gregory K. has filed insider reports for
- SUTRO BIOPHARMA, INC. (STRO): Officer, CFO
Chow Gregory K.
CIK: 0001761333
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
SUTRO BIOPHARMA, INC.
Discretionary Trading P&L
Holdings
Transaction History (7 total)
- Jun 2, 2026STRO
SUTRO BIOPHARMA, INC.
ExerciseDirect2.5K shares- - Mar 2, 2026STRO
SUTRO BIOPHARMA, INC.
AwardDirectStock Option (right to buy)
40K shares- - Mar 2, 2026STRO
SUTRO BIOPHARMA, INC.
AwardDirectRestricted Stock Units (RSUs)
5K shares- - Dec 23, 2025STRO
SUTRO BIOPHARMA, INC.
AwardDirectStock Option (right to buy)
8.2K shares- - Oct 15, 2025STRO
SUTRO BIOPHARMA, INC.
PurchaseDirect19.8K shares at avg. $0.81$16K - Jun 2, 2025STRO
SUTRO BIOPHARMA, INC.
AwardDirectStock Option (right to buy)
275K shares- - Jun 2, 2025STRO
SUTRO BIOPHARMA, INC.
AwardDirectRestricted Stock Unit (RSU)
100K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jun 2, 2026 | STRO SUTRO BIOPHARMA, INC. | Exercise | 2,500 | - | $0 | Direct |
| Mar 2, 2026 | STRO SUTRO BIOPHARMA, INC. | Award Stock Option (right to buy) | 40,000 | - | - | Direct |
| Mar 2, 2026 | STRO SUTRO BIOPHARMA, INC. | Award Restricted Stock Units (RSUs) | 5,000 | - | - | Direct |
| Dec 23, 2025 | STRO SUTRO BIOPHARMA, INC. | Award Stock Option (right to buy) | 8,200 | - | - | Direct |
| Oct 15, 2025 | STRO SUTRO BIOPHARMA, INC. | Purchase | 19,750 | $0.81 | $15,998 | Direct |
| Jun 2, 2025 | STRO SUTRO BIOPHARMA, INC. | Award Stock Option (right to buy) | 275,000 | - | - | Direct |
| Jun 2, 2025 | STRO SUTRO BIOPHARMA, INC. | Award Restricted Stock Unit (RSU) | 100,000 | - | - | Direct |
1-7 of 7 transactions