RA Capital

Venture capital firm
Boston, Massachusetts, USAFounded 2004$16.4B AUMwww.racap.comSee connections →

Investment firm that founds, funds, and scales companies across healthcare and planetary health.

At a glance

RA Capital appears in 4 funding rounds tracked by ValueAddVC since 2026, leading 2. Its most recent tracked deal was Solstice Oncology's $225M Series A round (Sep 9, 2026).

Strategy

Stages
SeedVentureGrowthCrossover
Sectors
HealthcareBiotechPlanetary Health
Geographies
USABoston, Massachusetts, USA
Check size
$5M-$100M

Recent changes

  1. Sep 9, 2026Invested in Solstice Oncology (Series A, $225M) GlobeNewswire
  2. Sep 6, 2026Sectors updated: Healthcare, Biotech, Planetary Health racap.com
  3. Sep 6, 2026Stages updated: Seed, Venture, Growth, Crossover racap.com
  4. Aug 27, 2026Invested in AusperBio Therapeutics (Series C, $120M) BioSpace
  5. Jul 2, 2026Invested in Celea Therapeutics ($180M) Celea Therapeutics

Portfolio

5 total

Recent Investment Activity

4

Track record: led 2 and participated in 2 of 4 tracked venture rounds · 4 in the last 12 months · led 1 Series A

DateCompanyEventRoleAmountValuationInvestorsSource
Sep 9, 2026Solstice OncologySeries ALed$225M—GlobeNewswire
Aug 27, 2026AusperBio TherapeuticsSeries CParticipated$120M—Pulse story
Aug 6, 2026LifeMine TherapeuticsSeries EParticipated$188M—
Bezos ExpeditionsunverifiedRA CapitalunverifiedMilky Way InvestmentsGates Frontier
Business Wire via Yahoo Finance
Jul 2, 2026Celea Therapeuticsfunding roundLed$180M—Celea Therapeutics

Sector / Stage Activity

By stage (tracked rounds)
Series A
1 · 25%
Series C
1 · 25%
Series E
1 · 25%

Co-Investors

12

Similar Firms

overlapping sector, stage or region

Value Add Research

Latest Pulse

  1. Solstice Oncology Launches With $225M Series ASolstice Oncology launched with a $225 million Series A led by RA Capital Management to advance porustobart, a second-generation CTLA-4 immunotherapy licensed from Harbour BioMed, into two Phase 2 cancer trials.→
  2. Superluminal Raises $60M for AI-Designed Obesity PillThe Boston biotech's Series B, backed by Nvidia and Eli Lilly among others, funds Phase 1 trials of an oral MC4R agonist for rare genetic obesity designed by its de novo drug-discovery AI platform.→
  3. AusperBio Raises $120M for Hepatitis B CureAusperBio Therapeutics raised a $120 million Series C led by a strategic investor with RA Capital joining, bringing total funding to $360 million as its lead hepatitis B therapy enters Phase 3.→
  4. Infinimmune Raises $75M for Human-Derived Antibody DrugsInfinimmune raised a $75 million Series A co-led by Regeneron Ventures and Playground Global to advance two atopic dermatitis antibody candidates built from its human-derived Anthrobody platform.→
  5. Biotech VCs Are Betting Big on Single Clinical TrialsCelea Therapeutics' $180M round, Beeline Medicine's $126.3M raise and Flare Therapeutics' $85M financing show late-stage biotech investors concentrating capital into single, high-conviction trial bets rather than diversified platform plays.→
  6. Celea Therapeutics Raises $180M Series B for Pulmonary Fibrosis DrugCelea Therapeutics, a clinical-stage biotech spun out of PureTech developing deupirfenidone for idiopathic pulmonary fibrosis, announced a $180 million Series B on July 2, led by RA Capital and Leaps by Bayer, with PureTech and additional unnamed.→
  7. Celea Therapeutics Raises $180M to Push Lung Drug Into Phase 3PureTech-founded Celea Therapeutics raised $180 million to fund a head-to-head Phase 3 trial testing its drug deupirfenidone against the current standard of care for idiopathic pulmonary fibrosis.→
  8. SonoThera Raises $125M for Ultrasound Gene TherapySonoThera closed an oversubscribed $125 million Series B led by Vida Ventures to push its ultrasound-delivered, nonviral genetic medicine platform toward its first clinical trial in Duchenne muscular dystrophy in 2027.→

RA Capital FAQ

What companies has RA Capital invested in?

RA Capital's portfolio includes Solstice Oncology, AusperBio Therapeutics, LifeMine Therapeutics, Celea Therapeutics, Ollin Biosciences.

Who does RA Capital co-invest with most?

In the rounds Value Add tracks, RA Capital most often invests alongside ARCH Venture Partners (2 shared deals), Andreessen Horowitz (1 shared deal), Bezos Expeditions (1 shared deal), Blackstone Multi-Asset Investing (1 shared deal), Canaan Partners (1 shared deal).

Sources & methodologyshow
Where these figures come from

Figures are labelled Reported (a source states it), Estimated, Derived (computed from other facts) or Rumored (in talks / unconfirmed). Rumors never replace a confirmed figure. Each figure keeps its own as-of date; history is preserved rather than overwritten.

How we verify data · Suggest a correction