Brian Rathjen vs Mark O Sullivan

Brian Rathjen vs Mark O Sullivan

Brian Rathjen is a individual/angel based in Stamford. Mark O Sullivan is a individual/angel based in New York across 70 portfolio companies. Sector focus diverges: Brian Rathjen concentrates on generalist deals and Mark O Sullivan on Fintech and Proptech.

• Investor type: Brian Rathjen — Individual/Angel; Mark O Sullivan — Individual/Angel
• Headquarters: Brian Rathjen — Stamford; Mark O Sullivan — New York
• Portfolio companies: Brian Rathjen — not disclosed; Mark O Sullivan — 70
• Sectors: Brian Rathjen — not disclosed; Mark O Sullivan — Fintech, Proptech

• Brian Rathjen — Individual/Angel · Stamford · Brian Rathjen portfolio
• Mark O'Sullivan — Individual/Angel · New York · 70 tracked deals · Mark O Sullivan portfolio

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