EcoR1 Capital portfolio
EcoR1 Capital (Venture capital) is known to hold 70 companies, 20 of them startups. 21 of them are hiring now, with 216 open roles. Its companies closed 4 venture rounds in 12 months, raising $363.4M. Most of them work in Oncology Therapeutics, Cell & Gene Therapy, Drug Discovery.
Companies EcoR1 Capital has invested in
Open roles at EcoR1 Capital portfolio companies
Clinical Laboratory Associate I (Contractor)Freenome · this month
Clinical Laboratory Scientist IFreenome · this month
Clinical Laboratory Scientist IIFreenome · this month
Senior Clinical Laboratory ScientistFreenome · this month
Supervisor, Analytical LaboratoryFreenome · this month
Senior Biological Data ScientistBridgebio · this month
Associate II/III Quality Assurance Compliance - Temporary to Hireartivabio · this month
Associate I-II, Materials Management (Contract, Multiple Openings)ElevateBio · this month
Senior Manager, IT Qualification & ValidationArcus Biosciences · this month
Senior Clinical Project AssociateRelay Therapeutics · this month
Area Sales Director - WestCollegium Pharmaceutical · this month
Automation Service Engineer IIFreenome · this month
Director, Supply Chain - CommercialBridgebio · this month
Senior Research Associate, Preclinical PharmacologyNurix Therapeutics · this month
Manager, BiostatisticsEikon Therapeutics · this month
Senior Scientist, Medicinal ChemistryNurix Therapeutics · this month
Sr. Manager, Talent Acquisition AdvisorCollegium Pharmaceutical · this month
Scientist I, Medicinal ChemistryNurix Therapeutics · this month
Automation Service Engineer IFreenome · this month
Clinical Quality Operations ManagerEikon Therapeutics · this month
Focus
Co-investors
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Questions about EcoR1 Capital
How many companies has EcoR1 Capital invested in?
EcoR1 Capital is known to hold 70 companies: 20 startups, and 28 exits so far, read from its own portfolio page and the funding rounds that name it.
Is EcoR1 Capital investing now?
EcoR1 Capital has no round in the press in 12 months and no new company on its portfolio page in 90 days.
What does EcoR1 Capital invest in?
The markets of the companies EcoR1 Capital holds: Oncology Therapeutics (13%), Cell & Gene Therapy (11%), Drug Discovery (11%), Rare Disease Therapeutics (7%), Biologics & Biosimilars (6%).
Which EcoR1 Capital portfolio companies are hiring?
21 companies EcoR1 Capital holds are hiring now, with 216 open roles listed on this page.
Who does EcoR1 Capital invest alongside?
The investors that hold the most companies together with EcoR1 Capital: GV, RA Capital Management, Aisling Capital, ARCH Venture Partners, NEA.
How this page is made
A company counts as a holding when the investor’s own portfolio page links to it, a program’s catalog lists it, or a funding round in the press names the investor. The numbers are rebuilt every night; each company shows where it came from and when it was first seen.
Sources: its portfolio page, read Oct 3
EcoR1 Capital portfolio: 70 known companies. Alion, Oct 19, 2026. https://alion.io/company/ecor1-capital/portfolio