Gabriel De Jesus Sierra vs Mark O Sullivan compared for founders deciding who to pitch. Stage focus, check size, and sector fit compared side by side.
Gabriel De Jesus Sierra is a individual/angel based in New York. Mark O Sullivan is a individual/angel based in New York across 70 portfolio companies. Sector focus diverges: Gabriel De Jesus Sierra concentrates on generalist deals and Mark O Sullivan on Fintech and Proptech.
Investors like Gabriel De Jesus Sierra · Investors like Mark O Sullivan · Gabriel De Jesus Sierra co-investors · Full investor directory