Portfolio Co Investors 2026 for John Hartnett: investors, rounds, and co-investor patterns from StartupFundraising.com research, updated for 2026.
John Hartnett covers 7 companies with a founder-verified check from John Hartnett, concentrated in Climate, SaaS, Biotech. Round sizes are not disclosed for these companies, so this report lists the verified positions rather than dollar totals.