SEC Form 4 research
| Issuer | Upstream Bio, Inc. |
|---|---|
| Tickers | UPB |
| Reporting owners | 21 |
| Officers and directors | 8 |
| Last public filing | 2026-09-17 |
| Available | Trade date | Reporting owners | Code | Shares | Price | Reported value |
|---|---|---|---|---|---|---|
| 2026-09-17 | 2026-09-16 | GRAY MICHAEL | S | 853 | $5.49 | Not reported |
| 2026-09-17 | 2026-09-16 | Ambrose Allison | S | 485 | $5.49 | Not reported |
| 2026-09-17 | 2026-09-16 | Deykin Aaron | S | 895 | $5.49 | Not reported |
| 2026-09-17 | 2026-09-16 | Sutherland Everett Rand | S | 2,095 | $5.49 | Not reported |
| 2026-09-17 | 2026-09-16 | Houghton Adam | S | 700 | $5.49 | Not reported |
Public filing evidence only. NexusTrade's simulated follower strategies are hypothetical, modeled results — not live trading returns and not investment advice.