Mark is a co-founding general partner at Causeway Media Partners, where he brings over a quarter century of successful private equity and venture investment experience to the firm. Prior to forming Causeway, he was a co-founding partner of Three Arch Partners from 1993 to 2012, a healthcare- focused investment firm that raised over $1 billion of capital commitments across five funds. Prior to Three Arch Partners, Mark was a general partner at Brentwood Associates, a private equity firm headquartered in Los Angeles.

Mark is an owner in both the Boston Celtics and the San Francisco 49ers. 

Mark is a graduate of Yale University and earned an MBA from Stanford Business School.