SEC Form 4 · accession 0001236537-26-000002
SUTRO BIOPHARMA, INC. · STRO
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Connie Matsui
Director
Period of report
Jun 5, 2026
Accepted (ET)
Jun 9, 2026 · 4:12 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001382101
Table I — non-derivative securities
No Table I lines on this filing.
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option (right to buy)F1 | $26.09 | Jun 5, 2026 | A | 10,000 | A | — | Jun 5, 2036 | Common Stock | 10,000 | 10,000 | D |
Explanation of responses
- F1The option shall vest, subject to the reporting person's provision of service to the issuer on each vesting date, as to 8.33% of the total award monthly, with the first tranche vesting on July 5, 2026, and the award shall be fully vested and exercisable on the earlier of (i) the date of the issuer's 2027 annual stockholders meeting or (ii) June 5, 2027.