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Upstream Bio, Inc.

$6.45 -8.51% NASDAQ: UPB · 15-min delayed
  • WALTHAM, Massachusetts
  • Public · NASDAQ: UPB
  • 75 employees
$383.7MMarket cap
$2.9MRevenue · FY2025
-$143.4MNet income
75Employees
UPBNASDAQ
2024IPO

About Upstream Bio, Inc.

Upstream Bio Inc is a clinical-stage biotechnology company developing treatments for inflammatory diseases, with an initial focus on severe respiratory disorders. It is developing verekitug, the known antagonist currently in clinical development that targets the receptor for Thymic Stromal Lymphopoietin (TSLP), a cytokine that is a clinically validated driver of inflammatory response positioned upstream of multiple signaling cascades that affect a variety of immune-mediated diseases. Verekitug has advanced into three separate world-wide, placebo-controlled, randomized Phase 2 clinical trials, two completed in chronic rhinosinusitis with nasal polyps (CRSwNP) and severe asthma, and one ongoing in chronic obstructive pulmonary disease (COPD).

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Reported figures

Financial summary

Revenue FY2025
$2.9M
Net income
-$143.4M
Total assets
$353.8M
Market cap
$383.7M
Operating margin
-5618.8%
Net margin
-5026.0%

Source: SEC EDGAR · updated Jun 7, 2026

Multi-year

Revenue & profit trend

Revenue Net income
FY 2025

Financial statements

Income statement

Revenue
$2.9M
Operating expenses
$163.2M
Operating income
-$160.4M
Income tax
$0
Net income
-$143.4M
EPS (basic)
$-2.66
EPS (diluted)
$-2.66

Balance sheet

Total assets
$353.8M
Current assets
$351.8M
Total liabilities
$14.0M
Current liabilities
$13.5M
Shareholders’ equity
$339.8M

Cash flow

Operating cash flow
-$133.3M
Investing cash flow
-$93.5M
Financing cash flow
$2.4M
Net cash flow
-$224.3M

Statements via Polygon.io (SEC filings)

NASDAQ: UPB
$6.45 -8.51%

15-minute delayed · data by Polygon.io

Past year

$6.45 $32.60

52-week range

Market cap
$383.7M
EPS (diluted)
$-2.66
Shares outstanding
59.5M
Open
Day range
Prev close
Volume
IPO date
Oct 11, 2024

Market data by Polygon.io · prices are 15-minute delayed

Auto-generated

At a glance

  • Reported a net loss of $143.4M in FY2025.
  • Revenue grew 20% from FY2024 to FY2025.
  • Trading 80% below its 52-week high.

Automatically generated from public filings and market data. Informational only — not investment advice or a recommendation to buy or sell any security.

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