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SOSV

Invests in early-stage deep-tech startups through equity accelerator programs and global investor introductions across technology sectors.

United Statessosv.com
Annual funding
Programs3
Active grants3
Total grants3

SOSV is a U.S.-based deep-tech venture capital firm founded in 1995 by Sean O'Sullivan. It manages about $1.5 billion in assets, supports roughly 800 active portfolio companies, and describes a mission centered on human and planetary health.

Its capital is equity, not grants. The standard check is a pre-seed SAFE of up to $550,000, paired with up to six months of lab residency, technical support,

Last verified: 31 May 2026Source: sosv.com