William C Martin vs Mark O Sullivan

William C Martin vs Mark O Sullivan compared for founders deciding who to pitch. Stage focus, check size, and sector fit compared side by side.

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.

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•By Alejandro Cremades