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THIRD ROCK VENTURES, LLC.

THIRD ROCK VENTURES, LLC. is a Pre-seed, Seed, Series A, Series B and Series C+ fund in the US writing $2M–$100M checks into AI, Healthcare, diagnostics, medical-devices, therapeutics, oncology, cardiovascular-disease, autoimmune-and-inflammatory-diseases, neurodegenerative-and-neurological-disorders and rare-genetic-and-orphan-diseases.

Stages
Pre-seed, Seed, Series A, Series B, Series C+
Sectors
AI, Healthcare, diagnostics, medical-devices, therapeutics, oncology, cardiovascular-disease, autoimmune-and-inflammatory-diseases, neurodegenerative-and-neurological-disorders, rare-genetic-and-orphan-diseases
Check size
$2M–$100M
Invests in
US-wide
Round role
Leads rounds
Actively investing
Yes
Founded
2007
Assets under management
$2.4B

Thesis

Third Rock Ventures is a venture capital firm focused on discovering, launching, and building life science companies, translating scientific discoveries into breakthrough medicines. With approximately $2.4 billion in assets under management, the firm invests in early to mid-stage companies in the healthcare and life sciences industries, employing a "Discover-Launch-Build-Transform" methodology. They actively shape company formation by collaborating with scientific founders and expert advisors, seeking opportunities where breakthrough science meets unmet medical needs. The firm invests across therapeutic areas, including oncology, cardiovascular, autoimmune, neurodegenerative, and rare diseases, focusing on biotech, diagnostics, medical devices, therapeutics, and digital health. Initial check sizes range from $30 million to $100 million for Series A and B stages, $2M-$10M for early-stage scientific concepts with founding teams (Pre-seed & Seed) and $15M-$50M+ for companies reaching key clinical or operational milestones (Series A & Beyond).

Common questions

Does THIRD ROCK VENTURES, LLC. invest at the Pre-seed stage?

Yes. THIRD ROCK VENTURES, LLC. lists Pre-seed, Seed, Series A, Series B and Series C+ among the stages it invests in.

What check size does THIRD ROCK VENTURES, LLC. write?

THIRD ROCK VENTURES, LLC. writes $2M–$100M checks.

Where does THIRD ROCK VENTURES, LLC. invest?

THIRD ROCK VENTURES, LLC. invests in the US.

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