LINDA A. FITZPATRICK - 01 Mar 2025 Form 4 Insider Report for SUTRO BIOPHARMA, INC. (STRO)

Role
CHIEF PEOPLE & COMM. OFFICER
Signature
/s/ Edward C. Albini as attorney-in-fact for Linda A. Fitzpatrick
Issuer symbol
STRO
Transactions as of
01 Mar 2025
Net transactions value
-$13,240
Form type
4
Filing time
04 Mar 2025, 18:40:02 UTC
Previous filing
22 Mar 2024
Next filing
06 Mar 2025
SEC
View on sec.gov

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction STRO Common Stock Options Exercise $0 +6,875 +9.4% $0.000000 79,827 01 Mar 2025 Direct
transaction STRO Common Stock Options Exercise $0 +13,400 +17% $0.000000 93,227 01 Mar 2025 Direct
transaction STRO Common Stock Tax liability $13,240 -8,327 -8.9% $1.59 84,900 01 Mar 2025 Direct F1
holding STRO Common Stock 10,383 01 Mar 2025 Michael A. & Linda A. Fitzpatrick Family Trust dated 10/13/1997 F2

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 Restricted Stock Unit (RSU) Options Exercise $0 -6,875 -33% $0.000000 13,750 01 Mar 2025 Common Stock 6,875 Direct F3, F4
transaction STRO Restricted Stock Unit (RSU) Options Exercise $0 -13,400 -25% $0.000000 40,200 01 Mar 2025 Common Stock 13,400 Direct F3, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents the number of shares of Common Stock that have been withheld by the issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of restricted stock units; does not represent a sale by the reporting person.
F2 These securities are held of record by Michael A. Fitzpatrick and Linda A. Fitzpatrick, Trustees of the Michael A. & Linda A. Fitzpatrick Family Trust dated 10/13/1997.
F3 Each RSU represents a contingent right to receive one (1) share of the issuer's Common Stock upon settlement.
F4 The RSUs vest as to 1/4th of the total shares annually beginning on March 1, 2024, subject to continued service through each vesting date.
F5 The RSUs vest as to 1/4th of the total award annually beginning on March 1, 2025, subject to continued service through each vesting date. Note that this transaction represents the aggregate vesting of RSU awards made on March 5, 2024 for 37,100 RSUs and on March 7, 2024 for 16,500 RSUs. The vesting events are reported on this Form 4 on an aggregate basis because both derivative instruments bear identical characteristics, including vesting schedules and expiration dates, and may be settled for the same class of security.