Insider · CIK 0002047381
Allison Ambrose
Files at: UPB. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 16, 2026 SForm 4 → | Sep 17, 4:05 pm EDT | Upstream Bio, Inc.UPB | 485 | $5.49 | $2,663 | 15,563 | −3.02% |
Reported trades — derivatives (options, RSUs, warrants)
No reported derivative activity in this period.