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Third Rock Ventures
Bio company-creation firm
VC
Sector Specialist
📍 Boston, MA
Founded 2007
AUM
$3.8B
as of 2026-Q1
SMALL
Third Rock Ventures was founded in 2007 in Boston. Bio-only firm with a company-creation model similar to Flagship's. Founded Agios, Alnylam, Bluebird Bio, and Editas Medicine.
Firm Profile
Firm Type
VC
Subtype
Sector Specialist
Founded
2007
HQ
Boston, MA
Country
USA
Notable Partners
Robert Tepper
Mark Levin
Cary Pfeffer
Portfolio Companies
(3)
alnylam
ALNY
agios
AGIO
sage therapeutics
Investment Focus
Stages
Seed · Series A
Sectors
Bio · Therapeutics
VC
Bio Specialist
Company-Creation
Investor data reflects publicly disclosed AUM, fund sizes, and portfolio holdings as of 2026-Q1. Refreshed periodically.