SOSV is a Princeton, New Jersey-based global venture capital firm founded in 1995 by Sean O'Sullivan that specializes in deep tech. See contact routes.
SOSV is a Princeton, New Jersey-based global venture capital firm founded in 1995 by Sean O'Sullivan that specializes in deep tech startups addressing human and planetary health [1][2]. The firm operates as "The First Check in Deep Tech®," investing at pre-seed, seed, and Series A stages primarily through its accelerator programs HAX for hardware and IndieBio for biotech, with a global geographic scope [2][3]. SOSV typically deploys first checks of $250,000 to $550,000 as a lead investor in pre-seed rounds and follows on through later stages to support company growth [3][10]. Notable portfolio companies include Upside Foods (cultivated meat), NotCo (plant-based foods), Opentrons (lab automation), and MycoWorks (mushroom leather), with the portfolio exceeding 1,000 companies [3]. The firm's distinctive point of view centers on democratizing deep tech innovation by combining rigorous science and engineering with entrepreneurial vision, backed by 85,000 square feet of in-house labs and manufacturing facilities [2][3]. SOSV manages approximately $1.5 billion in assets and consistently ranks as a top investor in climate tech and health sectors [3][5].
StartupFundraising tracks this firm record from SEC filings and announced rounds, updating focus, location and portfolio history as new data lands. Use it to gauge fit before an outreach, then widen the search to investors in Princeton.
Investors like Sosv · Full investor directory · Investor access · Company funding database