Upstream Bio Inc $UPB

Health Care

$2.99
+0.19 (+6.79%)
As of Oct 22, 2026, 9:30 PM EDT
Price history
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Upstream Bio Inc (UPB) is trading up at $2.99 (+6.79%), as of the latest quote. It is a Russell 2000 constituent in the Health Care sector.

IPO: October 11, 2024 · $17.00 offering · NASDAQ · View IPO details →

Upstream Bio Inc revenue & net income history (FY2023–FY2025)

RevenueNet incomeNet margin (right axis, %)
$2.85M−$70.3M−$143.4MFY2023 revenue: $2.38MFY2023 net income: −$20.5M · Net margin −862.9%'23FY2024 revenue: $2.37MFY2024 net income: −$62.8M · Net margin −2650.0%'24FY2025 revenue: $2.85MFY2025 net income: −$143.4M · Net margin −5026.0%'25−100%−75%−50%−25%0%FY2023 net margin: −862.9% (off the scale, which stops at −100.0%)FY2024 net margin: −2650.0% (off the scale, which stops at −100.0%)FY2025 net margin: −5026.0% (off the scale, which stops at −100.0%)
Upstream Bio Inc annual financial statements
FY2023Dec 2023FY2024Dec 2024FY2025Dec 2025
Income statement
Revenue$2.38M$2.37M$2.85M
Growth (year over year)—−0.4%+20.4%
Operating income−$40.1M−$77.8M−$160.4M
Operating margin−1685.5%−3281.2%−5618.8%
Net income−$20.5M−$62.8M−$143.4M
Net margin−862.9%−2650.0%−5026.0%
EPS (diluted)−$12.95−$5.58−$2.66
Balance sheet
Cash and equivalents$25.8M$325.9M$101.6M
Total assets$117.2M$481.7M$353.8M
Total liabilities$9.39M$11.9M$14.0M
Shareholders' equity−$123.1M$469.9M$339.8M
Cash flow
Operating cash flow−$37.9M−$59.2M−$133.3M
Capital expenditure$144.0K$511.0K$165.0K
Free cash flow−$38.1M−$59.7M−$133.4M

From Upstream Bio Inc's 10-K and 10-Q filings with the SEC; its fiscal year ends in December. Each period shows the latest figure the company has reported for it, including restatements. Net margin is our own calculation from those reported figures (net income ÷ revenue); it is left blank where revenue is zero or missing. † Quarter derived from the company's year-to-date or full-year totals. Filings on SEC EDGAR →

About Upstream Bio Inc

Headquarters
Waltham, Massachusetts From SEC filings, Oct 2026

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