John M Jack

John M Jack covers 33 companies with a founder-verified check from John M Jack, concentrated in SaaS, AI Infrastructure, Healthtech. Round sizes are not disclosed for these companies, so this report lists the verified positions rather than dollar totals.

• Verified portfolio companies: 33
• Sector mix: SaaS 9 · AI Infrastructure 2 · Healthtech 2 · Private Equity 2
• Headquarters mix: New York 3 · London 3 · San Francisco 2 · Mountain View 2

John M Jack — verified positions

• St. George Investments LLC
• Extole
• HyTrust
• Silicon Box
• VITURE
• Phenom
• BuyerCaddy
• Cadense
• Vestorly
• Fortify
• Harmonic Growth Partners
• The Vantive Corporation
• Covalent
• Star Mountain Capital
• LendingClub
• New Fortress Energy
• Nasuni
• OPTIX
• Metafoodx
• CS Capital Partners CV I, L.P.
• CS Capital Partners V, L.P.
• Zulu Network
• Subtle Medical
• Tonaquint, Inc.
• Chicago Venture Partners, L.P.
• Typenex Co-Investment, LLC
• Iliad Research and Trading, L.P.
• Galaxy Bot
• aPriori Technologies
• Oroson
• InMarket
• Zempler Bank
• Mojo Networks

John M. Jack — related firms and companies (56)

• Steven Leischner
• Arie Benguigui
• Nimble Partners GP, LLC
• Nimble Partners OPP GP II, LLC
• VC Management II, LLC
• Lee Moser
• Apurva Mehta
• Andrew Boyd
• H. Kim Lee
• Antony Abbiati
• Jason Parikh
• General Partner Forum Ventures Studio GP I, LLC
• Michael Dorrell
• Hugh D. Evans
• Tsp4 Gp, LLC
• Shap Bashar
• John M. Jack portfolio companies 2026
• Oep IX Gp, L.L.C.
• Bradley J. Hannah
• Lateral Capital Group, LLC
• firstminute capital LLP
• SCS Capital Management, LLC
• Stewart Kohl
• Tomer Diari
• Mark Pomeroy Jr.
• Patrick Hop
• Greg Galligan
• Lance Fenton
• Jonah Midanik
• Hyphen Capital GP I, LLC
• Veritas Capital Fund Management, L.L.C.
• CH Investment Partners, L.L.C.
• Dafina Toncheva
• William Kyle Cleeton
• Robyn H. Lehman
• Joshua Daniel Stone
• Renovus GP IV SBIC, LLC
• firstminute capital IV General Partner LLP
• Henry Kaestner
• Clifford Holekamp
• Forum Ventures, LLC.
• Chun Yi George Bridge Tower Capital LLC
• Julian Fletcher
• Adrien Ralph Christophe Gautier
• Stewart Lynn
• Acceleprise Seed Fund GP I, LLC
• Meagan Malm
• Ramzi S. Musallam
• Pete Fisher
• Jonathan D Root
• Belltower Fund Group,
• John D. Stobo, Jr.
• Aly Hadibhai
• Tim Hoerr
• Brent Hoberman
• Marcelo Vedovatto

John M. Jack profile · All research reports