Upstream Bio, Inc. (UPB) is a biotechnology company listed on US.
Latest reported UPB revenue for 2025-12-31 was $2.9M. Net income was -$143.4M. Revenue was up 20.4% from 2024-12-31 to 2025-12-31. UPB currently screens at market cap $407.3M.
Use this UPB page for company research — sector, financials, and the latest filing takeaway — not a live tape. The session quote (last, range, volume) lives on the UPB quote page. Cached 10-K, 10-Q, 8-K, and Form 4 exhibits are on the UPB SEC filings page. Lician reads the product cache first so this HTML stays unique to Upstream Bio, Inc. even when a live quote feed is slow.
Latest cached year on this hub. Full UPB income, balance, and cash tables.