Product Reports Resources Pricing Login Book a demo

Upstream Bio

Biotech & Life Sciences · Waltham, United States · Founded 2021

Focuses on developing an antibody therapy for the treatment of severe asthma MoreLess

Upstream Bio is a biotechnology startup focused on developing innovative therapies to treat inflammatory and allergic diseases. The company operates in the biopharmaceutical market, targeting conditions that cause significant discomfort and health issues for patients. Their primary clients are healthcare providers and patients who suffer from chronic inflammatory conditions such as asthma and chronic rhinosinusitis with nasal polyps (CRSwNP).

The company's lead product, verekitug, is a monoclonal antibody designed to inhibit the TSLP receptor, a key player in the inflammatory process. Verekitug has successfully completed Phase 1b clinical trials for asthma and is currently in Phase 2 trials for both asthma and CRSwNP. Monoclonal antibodies are lab-made proteins that can bind to specific targets in the body, and in this case, verekitug aims to block the receptor that triggers inflammation.

Upstream Bio's business model revolves around research and development (R&D) of these specialized therapies. They invest heavily in clinical trials to ensure the safety and efficacy of their products. Once a therapy proves successful in clinical trials, the company can either bring it to market themselves or partner with larger pharmaceutical companies for distribution and commercialization. This approach allows them to generate revenue through product sales, licensing agreements, and potential milestone payments from partners.

The company is deeply committed to patient-centric values, ensuring that their work directly improves the quality of life for those suffering from inflammatory diseases. By focusing on the root causes of inflammation, Upstream Bio aims to provide long-term relief and better health outcomes for patients.

Keywords: biotechnology, inflammation, allergic diseases, monoclonal antibody, TSLP receptor, asthma, CRSwNP, clinical trials, patient-centric, biopharmaceutical.

Company overview

Upstream Bio company information

The essential company record, classifications and operating signals in one place.

Status
Operational
Founded
2021
Headquarters
Waltham, United States
Employees
82
Open positions
4
Dealroom signal
91.0
client focusb2bsub industryPharmaceuticalsub industryBioTechnologybusiness modelSaaSindustryHealthsectorBiotechnologysectorRespiratorysectorInflammatory DiseasessectorRumoured $1BsectorBiotech and PharmasectorDT and LSsectorscience-based

Valuation & funding

Upstream Bio funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
IPOOther financing Oct 2024 $293M $1.1B Undisclosed
SERIES BOther financing Jun 2023 $200M $800M Omega Funds · Altshuler Shaham · Bain Capital Life Sciences · Venrock Healthcare Capital Partners
SERIES AOther financing Jun 2022 $200M $800M Omega Funds · Altshuler Shaham · Access Biotechnology · OrbiMed
SERIES AOther financing Oct 2021 $0 HBM Healthcare Investments
Showing 4 recorded eventsUnlock the complete deal history →

Financials

Revenue, earnings and profit over time

Reported history and available estimates. Estimated years are marked “E”; sparse fields are left blank rather than inferred.

YearRevenueGrowthEBITDAMargin
2026 $2M -28.5% −$160M -7851.6%
2025 $2.9M +20.4% −$160M -5612.2%
2024 $2.4M -0.4% −$78M -3277.4%
2023 $2.4M +96.4% −$40M -1682.9%
2022 $1.2M −$24M -1972.1%
Company filings, research estimates and Dealroom dataOpen the full financial model →

Growth signals

Upstream Bio website traffic

Latest recorded traffic for Upstream Bio is 3.5K monthly website visits, down 37.5% over the last three months. Upstream Bio's team grew 20.6% over the past year.

Latest monthly visits3.5K 3-month web change-37.5% 1-year team growth+20.6%
Monthly website visits46 observations · Oct 2022–Jul 2026
Hover or focus a point to see its exact monthly valueCompare with peers →

Comparisons

Upstream Bio compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

Showing 8 of the closest matchesCompare every metric →

Talent graph

Upstream Bio's talent

Book a demo to see the people
Team profiled 5 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

13 investors on Upstream Bio's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Series A 13 investors entered at this stage
HBM Healthcare Investments
OrbiMed
Maruho
Omega Funds
Altshuler Shaham
Access Biotechnology
Decheng Capital
Samsara BioCapital
TCGX
Bain Capital Life Sciences
Venrock Healthcare Capital Partners
Enavate Sciences
Wellington Management

Global footprint

Where Upstream Bio has talent and traffic

Workforce by country
4 countries with
team presence
🇺🇸 United States92.6%
🇨🇿 Czech Republic1.9%
🇮🇱 Israel1.9%
🇦🇷 Argentina1.9%
4 countries shown

In the news

Latest news about Upstream Bio

Recent press, funding announcements, and product moves mentioning Upstream Bio — open to read from the original sources.

See all news

Market sentiment

What the market is saying about Upstream Bio

An AI-synthesized read of the highest-engagement posts about Upstream Bio on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

See Upstream Bio’s full profile on Dealroom

Request a free trial to see the complete deal history, financials, people graph and growth signals.

Takes under a minute. Already use Dealroom? Log in.