Portfolio Co Investors 2026 for Sean O Sulllivan: investors, rounds, and co-investor patterns from StartupFundraising.com research, updated for 2026.
Sean O Sulllivan covers 29 companies with a founder-verified check from Sean O Sulllivan, concentrated in Biotech, Climate, AI Infrastructure. Round sizes are not disclosed for these companies, so this report lists the verified positions rather than dollar totals.