Martin began working with Rho in the mid 1990s prior to joining as a Partner in 2005. Before joining Rho, Martin spent five years as a general partner of Apple Tree Partners, a life sciences venture capital firm. Previously, he was a general partner of Oxford Bioscience Partners which he joined in 1993. Martin received his AB in biology and history from Columbia University. Several of his current and former board seats include Gloucester Pharmaceuticals, Mersana, and MiddleBrook.