Rob Horn, Senior Managing Director. Mr. Horn is a Senior Managing Director of Blackstone and is Co-Head of Energy Investing for GSO Capital Partners. Mr. Horn sits on GSO’s management committee, and the investment committees for GSO’s energy, structured products, performing credit, and distressed funds. Mr. Horn is also a member of Blackstone’s Environmental, Social and Governance Committee. Prior to joining GSO, Mr. Horn worked in Credit Suisse’s Global Energy Group, where he advised on high yield financings and merger and acquisition assignments for companies in the power and utilities sector. Mr. Horn serves on the board of directors of various companies involved in the renewable energy, upstream, and midstream sectors. Mr. Horn graduated with academic honors from McGill University.