Form 4 for STRO SUTRO BIOPHARMA, INC.
Accepted 2026-03-06 00:00:00 ET · period of report 2026-03-04 · accession 0002063633-26-000003 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-03-06 | 2026-03-04 | STRO | Pauling David | GC, Chief Admin. Ofcr | F - Tax | $21.31 | -277 | 9,748 | -3% | -$5,903 |
| D | 2026-03-06 | 2026-03-04 | STRO | Pauling David | GC, Chief Admin. Ofcr | M - OptEx | $0.00 | +675 | 10.0K | +7% | $0 |
| D | 2026-03-06 | 2026-03-04 | STRO | Pauling David | GC, Chief Admin. Ofcr | M - OptEx | $0.00 | -675 | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-03-04 | F | D | 277 | $21.31 | 9,748 | D | — | — | (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. |
| 2 | Common | Common Stock | 2026-03-04 | M | A | 675 | $0.00 | 10,025 | D | — | — | |
| 3 | Derivative | Restricted Stock Units (RSUs) | 2026-03-04 | M | D | 675 | $0.00 | 0 | D | — · — to 2026-03-04 | 675 Common Stock | (F2) Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement. (F3) The RSUs vested or vest as to 1/4 of the total award annually, with the first tranche vested on March 4, 2023, subject to continued service through each vesting date. |