Associate, Corporate  

New York 917.580.3327


​​Óisín O’Callaghan provides strategic counsel to emerging and high-growth technology companies. His practice includes startup counseling, venture capital financings, mergers and acquisitions, securities law compliance and corporate governance.

Prior to joining Fenwick & West, Óisín worked as an intern for Senator Tim Kaine in the United States Senate and at a large international law firm in Dublin, Ireland.