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RA Capital Management

North America, Massachusetts, United States, Boston

Description

RA Capital Management is a leading investment advisor with a specialized focus on the life sciences and drug development sectors. Based in Boston, the firm is renowned for its deep scientific expertise and its comprehensive investment strategy, which spans from early-stage private companies to publicly traded equities. RA Capital's approach is characterized by rigorous due diligence into the underlying science and a long-term commitment to fostering innovation in areas such as biotechnology, pharmaceuticals, and medical devices. They aim to identify and support companies developing transformative therapies and technologies that address significant unmet medical needs.

The firm deploys substantial capital across various stages of company development. For instance, RA Capital closed its RA Capital Nexus Fund II with $880 million in 2023, complementing its earlier RA Capital Healthcare Fund, which secured $1.2 billion in 2021. This significant capital base enables them to make impactful investments, often leading or co-leading substantial funding rounds. Their investment philosophy emphasizes partnership with management teams, providing not just capital but also strategic guidance and access to a vast network within the life sciences industry. They are known for their ability to navigate the complexities of drug development and clinical trials.

RA Capital's typical first cheque sizes for private companies reflect their capacity and the capital-intensive nature of the biotech industry. While they participate in rounds ranging from Series A through crossover and late-stage private financings, their initial investments generally fall between $10 million and $100 million. This range allows them to take meaningful positions in promising ventures, from innovative startups requiring substantial seed capital to more mature private companies on the cusp of significant milestones. Their portfolio includes a diverse array of companies working on novel therapeutic modalities, gene therapies, and precision medicines, underscoring their commitment to advancing healthcare.

Investor Profile

RA Capital Management has backed more than 439 startups, with 44 new investments in the last 12 months alone. The firm has led 145 rounds, about 33% of its total and boasts 186 exits across its portfolio.

Investment Focus Highlights

  • Concentrates on Series B, Post Ipo Equity, Series C rounds (top funding stages).
  • Majority of deals are located in United States, United Kingdom, Canada.
  • Strong thematic focus on Biotechnology, Health Care, Therapeutics.
  • Led 13 rounds in the past year.
  • Typical check size: $10M – $100M.

Stage Focus

  • Series B (28%)
  • Post Ipo Equity (19%)
  • Series C (17%)
  • Series A (15%)
  • Series Unknown (8%)
  • Series D (5%)
  • Seed (3%)
  • Series E (3%)
  • Private Equity (1%)

Country Focus

  • United States (85%)
  • United Kingdom (4%)
  • Canada (3%)
  • Denmark (2%)
  • Switzerland (1%)
  • China (1%)
  • The Netherlands (1%)
  • Ireland (1%)
  • Israel (1%)
  • Germany (1%)

Industry Focus

  • Biotechnology
  • Health Care
  • Therapeutics
  • Medical
  • Pharmaceutical
  • Biopharma
  • Life Science
  • Health Diagnostics
  • Oncology
  • Genetics
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FAQ

Frequently Asked Questions

Learn who this investor regularly partners with—both firms and angels—and explore their latest activity.

Who does RA Capital Management frequently co-invest with?

OrbiMed
North America, New York, United States, New York
Co-Investments: 71
Wellington Management
North America, Massachusetts, United States, Boston
Co-Investments: 35
Surveyor Capital
North America, Illinois, United States, Chicago
Co-Investments: 49
CA
North America, Massachusetts, United States, Boston
Co-Investments: 42
Rock Springs Capital
North America, Maryland, United States, Baltimore
Co-Investments: 38
Perceptive Advisors
North America, New York, United States, New York
Co-Investments: 57
Vivo Capital
North America, California, United States, Palo Alto
Co-Investments: 39
Logos Capital
North America, California, United States, San Francisco
Co-Investments: 48
Janus Henderson Investors
Europe, England, United Kingdom, London
Co-Investments: 61
Boxer Capital
North America, Florida, United States, Windermere
Co-Investments: 42

Which angels does RA Capital Management often collaborate with?

ME
Europe, England, United Kingdom
Shared Deals: 1
CI
North America, New York, United States, New York
Shared Deals: 1
Shared Deals: 2
AU
Europe, Hallands Lan, Sweden, Kungsbacka
Shared Deals: 1
Mark W. Hahn
North America, North Carolina, United States, Chapel Hill
Shared Deals: 1
Zohar Zisapel
Asia, Tel Aviv, Israel, Tel Aviv
Shared Deals: 2
VS
North America, Massachusetts, United States, Boston
Shared Deals: 1
GB
Europe, England, United Kingdom, London
Shared Deals: 2
David Zaccardelli
North America, United States
Shared Deals: 1
DE
Europe, Zurich, Switzerland, Zürich
Shared Deals: 1

What are some of recent deals done by RA Capital Management?

OnKure Therapeutics

Boulder, Colorado, United States

OnKure is a clinical-stage biopharma company developing precision medicines targeting validated cancer drivers.

BiotechnologyLife SciencePrecision MedicineTherapeutics
Post Ipo EquityMar 27, 2026
Amount Raised: $150,000,000
Pinnacle Medicines

Doylestown, Pennsylvania, United States

Pinnacle Medicines is a peptide drug discovery company that provides peptide modality for medical needs.

BiopharmaBiotechnologyMedical
Series BMar 26, 2026
Amount Raised: $89,000,000
Terrestrial Bio

Cambridge, Massachusetts, United States

Terrestrial Bio engages in developing biomedical innovations with a focus on improving access to vaccines.

BiotechnologyHealth CareMedical
Series CMar 26, 2026
Amount Raised: $50,000,000
Karyopharm Therapeutics

Newton, Massachusetts, United States

Karyopharm Therapeutics is a clinical-stage pharmaceutical company developing drugs for the treatment of cancer and other major diseases.

Health CareMedicalPharmaceutical
Post Ipo EquityMar 24, 2026
Amount Raised: $30,000,000
Diamyd Medical

Stockholm, Stockholms Lan, Sweden

Diamyd Medical is a Swedish diabetes company active in the field of pharmaceutical development.

BiotechnologyHealth DiagnosticsMedical Device
Post Ipo EquityMar 23, 2026
Amount Raised: $24,864,255
Ovid Therapeutics

New York, New York, United States

Ovid Therapeutic's purpose is to solve intractable medical problems.

BiopharmaBiotechnologyHealth Care
Post Ipo EquityMar 17, 2026
Amount Raised: $60,000,000
Acumen Pharmaceuticals

Carmel, Indiana, United States

Acumen is developing targeted therapies for the safe and effective treatment of Alzheimer’s Disease and related neurodegenerative diseases.

BiotechnologyHealth DiagnosticsTherapeutics
Post Ipo EquityMar 16, 2026
Amount Raised: $35,750,000
Equillium

La Jolla, California, United States

Equillium is a biotechnology company that develops products for autoimmune and inflammatory disorders with an unmet medical need.

BiopharmaBiotechnologyLife Science
Post Ipo EquityMar 13, 2026
Amount Raised: $35,000,000
Relmada Therapeutics

New York, New York, United States

Relmada Therapeutics is a biotech company addressing diseases of the central nervous system, with a focus on major depressive disorder.

BiotechnologyClinical TrialsPharmaceutical
Post Ipo EquityMar 9, 2026
Amount Raised: $160,000,000
Solid Biosciences

Charlestown, Massachusetts, United States

Solid Biosciences is a life science company that conducts research for the treatment of Duchenne muscular dystrophy.

BiotechnologyGeneticsHealth CareMedical
Post Ipo EquityMar 6, 2026
Amount Raised: $240,000,000

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