Gregory Sills is Managing Director and Chief Operating Officer in the Finance group at Apollo, where he brings over 20 years of experience in managing operating functions, leading organizational transformations, and implementing complex projects. Prior to joining the Firm, Gregory had his own consulting practice specializing in business transformation. Before that, he was Chief Administrative Officer & Executive VP at Bookspan and Managing Director at Neuberger Berman where he was Global Head of Expense Management and Corporate Services before that. Previously, he was with Lehman Brothers first in the Corporate Strategy group and later as a Senior Vice President in the Investment Management Division. He started his career as a business consultant at AT Kearney.

Gregory graduated from the Massachusetts Institute of Technology with a BS in Mechanical Engineering. He is on the board of directors of Per Scholas and the Rudin Foundation.