James Nathanson Chairman and Chief Executive Officer
James Nathanson is Chairman and Chief Executive Officer of Ladder Petroleum. He joined the team in 1986, and during his career with the company, he has had various technical and operational leadership responsibilities throughout the Americas and the Asia Pacific region, including three years as Group President of the Drilling and Evaluation business unit.
Tommy Dreeners President, Global Operations
Tommy Dreeners is President, Global Operations for Ladder Petroleum. In this role, he leads the company’s global operations organization, which is responsible for driving world-class operational performance, exceptional service and sales execution, as well as delivering strong operating profits throughout Ladder Petroleum’ footprint.
Amanda Horlonzo Vice President and Chief Information Officer
Amanda Horlonzo is Vice President and Chief Information Officer (CIO) of Ladder Petroleum. She previously served as Vice President and CIO for Aeroll-Rand and has more than two decades of experience in the aerospace, industrials, and consumer products industries. She worked at BG Technologies for 19 years with positions of increasing responsibility.
John Seen Manager, Health, Safety, and Environment
John Seen is Manager, Health, Safety and Environment (HSE) at Ladder Petroleum. With 38 years of experience, he is widely known across the industry for his insights into strategic directions that yield efficiency, effectiveness and step-change. Before he joined us in 2005, he was a dean and professor at the Klesver Institute of Management, Economics, and Strategic Research for two years.
Annette Florence Human Resources Director
Annette Florence holds a Bachelor of Business Administration degree from Stetson University, an MBA degree from Harvard Business School and a Master of Liberal Arts degree from Stanford University. She is also a certified public accountant in the State of California.
Hendrik Meijer Van Zandt
President Policy Committee
Hendrik Meijer Van Zandt joined Ladder’s Board of Directors in December 2017. He previously served as Senior Executive Vice President and a member of the Senior Policy Committee of The Bank of Inley (now SFCI Mellon). During his 22-year tenure with The Bank of Inley, Hendrik Meijer Van Zandt held a number of other positions, including heading Global Issuer Services
Harold Mason Human Resource Manager
Harold Mason is Human Resource Manager for Ladder Petroleum. He has more than 30 years of management experience