William C Martin vs Mark O Sullivan

William C Martin vs Mark O Sullivan

William C Martin is a individual/angel based in Ann Arbor. Mark O Sullivan is a individual/angel based in New York across 70 portfolio companies. Sector focus diverges: William C Martin concentrates on generalist deals and Mark O Sullivan on Fintech and Proptech.

• Investor type: William C Martin — Individual/Angel; Mark O Sullivan — Individual/Angel
• Headquarters: William C Martin — Ann Arbor; Mark O Sullivan — New York
• Portfolio companies: William C Martin — not disclosed; Mark O Sullivan — 70
• Sectors: William C Martin — not disclosed; Mark O Sullivan — Fintech, Proptech

• William C. Martin — Individual/Angel · Ann Arbor · William C Martin portfolio
• Mark O'Sullivan — Individual/Angel · New York · 70 tracked deals · Mark O Sullivan portfolio

Similar investors

• Jeffrey Saling
• Bryan Baum
• Steven Leischner
• FIG Real Estate Management, LLC
• Michelle Wilson-Clarke
• Edward Lando
• John Fischer
• Investment Manager RREEF America L.L.C.
• Blake Walker
• John Ackerley

Investors like William C Martin · Investors like Mark O Sullivan · William C Martin co-investors · Full investor directory