John is a Non-Executive Director of the Bridgepoint Group's board and Senior Lecturer of Business Administration at Harvard Business School.
He was a Senior Managing Director and then Senior Advisor at The Blackstone Group from 2004 to 2023, initially serving as CIO of an investment fund and later as the Global Head of its Private Equity Investor Relations and Development function. John led global fundraising efforts of over $17 billion for its flagship fund immediately following the financial crisis. He later helped launch key strategic initiatives, including Blackstone's Tactical Opportunities and Energy Transition Partners funds, and the firm's retail investor platform.
John currently serves on the boards of Cengage Learning and Clear Channel Outdoors. He has previously held directorships with Caesars Entertainment, Momentive Performance Materials, and several other companies. John also serves as a Senior Advisor to BayPine and Privacore.