Michael Dybbs - Jun 6, 2025 Form 4 Insider Report for SUTRO BIOPHARMA, INC. (STRO)

Role
Director
Signature
/s/ David Pauling as attorney-in-fact
Stock symbol
STRO
Transactions as of
Jun 6, 2025
Transactions value $
$0
Form type
4
Date filed
6/10/2025, 04:08 PM
Previous filing
Jun 9, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Dybbs Michael Director C/O SUTRO BIOPHARMA, INC., 111 OYSTER POINT BLVD., SOUTH SAN FRANCISCO /s/ David Pauling as attorney-in-fact 2025-06-10 0001601264

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction STRO Stock Option (right to buy) Award $0 +50K $0.00 50K Jun 6, 2025 Common Stock 50K $0.85 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The option vests as to 8.33% of the total shares monthly, commencing July 6, 2025, with 100% of the total shares vested and exercisable on the earlier of the date of the issuer's 2026 annual stockholders meeting or June 6, 2026, subject to the reporting person's provision of service to the issuer on each vesting date.