Form 4 for UPB Upstream Bio, Inc.
Accepted 2026-01-06 00:00:00 ET · period of report 2026-01-02 · accession 0001193125-26-004758 · 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 | 2026-01-06 | 2026-01-02 | UPB | GRAY MICHAEL | CFO, COO | A - Grant | $0.00 | +30.5K | 30.5K | New | $0 |
| D | 2026-01-06 | 2026-01-02 | UPB | GRAY MICHAEL | CFO, COO | A - Grant | $0.00 | +91.5K | 91.5K | New | $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 | 2026-01-02 | A | A | 30,500 | $0.00 | 30,500 | D | — | — | |
| 2 | Derivative | Stock Option (Right to Buy) | 2026-01-02 | A | A | 91,500 | $0.00 | 91,500 | D | $27.07 · — to 2036-01-01 | 91,500 Common Stock | (F2) The shares underlying this option shall vest in forty-eight equal monthly installments following January 1, 2026, subject to the Reporting Person's continued service on each such vesting date. |