Third Rock Ventures is a venture capital firm focused on investing in life sciences, biotechnology, and pharmaceutical companies. The firm primarily targets early-stage investments, with a strong emphasis on Series A and B rounds. Third Rock Ventures operates primarily in Massachusetts and California, supporting innovative companies developing cutting-edge medicines and therapies.
Notable portfolio companies include Insitro, Thrive Earlier Detection, and Septerna. Third Rock Ventures is known for its hands-on approach, often taking an active role in company formation and providing strategic guidance to portfolio companies. The firm's partners bring extensive industry experience, helping to transform scientific discoveries into successful businesses that address unmet medical needs.
Third Rock Ventures - Portfolio Snapshot
Portfolio activity breakdown across disclosed investments and stages
Total Investments87
Current Portfolio Count40
Total Portfolio Exits4
Top Investment Stages
Series A38 (44.7%)
Series B31 (36.5%)
Series C11 (12.9%)
Seed3 (3.5%)
Series Unknown2 (2.4%)
Stage Mix
Series A 45%Series B 36%Series C 13%Seed 4%Series Unknown 2%
Concentration shown as share of disclosed investments by stage.
Third Rock Ventures - Classification
- Also Known As
- Third Rock Ventures, LLC
- NAICS
- 520000Finance and Insurance
- 523000Securities, Commodity Contracts, and Other Financial Investments and Related Activities
- 523900Other Financial Investment Activities
- 523990All Other Financial Investment Activities
- 523999Miscellaneous Financial Investment Activities
- SIC
- 6700Holding And Other Investment Offices
- 6790Miscellaneous Investing
- 6799Investors, Not Elsewhere Classified
Show 6 more industry codes
- NAICS
- 525000Funds, Trusts, and Other Financial Vehicles
- 523910Miscellaneous Intermediation
- 523940Portfolio Management and Investment Advice
- SIC
- 6000Depository Institutions
- 6720Investment Offices
- 6722Management Investment Offices, Open-end