John serves as a Senior Advisor on GCP’s Advisory Board, providing strategic guidance to the firm’s leadership and investment teams.

He previously spent nearly 17 years at Blackstone, where he was Global Group Head of Blackstone Alternative Asset Management (BAAM), the firm’s multi-asset investing division. At BAAM, John was a member of all investment committees as well as Blackstone’s firm-wide Operating Committee. Over his tenure, he was responsible for several key business units – including GP Stakes & Seeding, Global Business Development, Global Strategy, and Product Development – and is credited with launching Blackstone’s data science initiative.

Before joining Blackstone in 2005, John was an Associate Principal at McKinsey & Company, advising senior executives in the financial services industry on strategy and organizational issues. He began his career as an attorney at Davis Polk & Wardwell and later served at the U.S. Department of the Treasury.

John holds a BA from Vassar College and a JD from Yale Law School. In 2022, he returned to Yale Law as an Associate Research Scholar, where he led a reading group on emerging technologies.