Form 4 for UPB Upstream Bio, Inc.
Accepted 2026-03-17 00:00:00 ET · period of report 2026-03-16 · accession 0001193125-26-111105 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-03-17 | 2026-03-16 | UPB | Houghton Adam | Chief Business Off | S - Sale | $9.29 | -699 | 24.3K | -3% | -$6,494 |
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 | 2026-03-16 | S | D | 699 | $9.29 | 24,301 | D | — | — |