Chief Operating Officer
Marc Horstman was appointed as Chief Operating Officer of the Company on April 15, 2025. Mr. Horstman previously served as Net Power’s Head of Product Development beginning in May 2023. Prior to joining Net Power, he held senior leadership roles at Vertiv Holdings Co., a provider of critical digital infrastructure for data centers, communication networks, and commercial and industrial environments, including Vice President of North America Service Operations from October 2021 to November 2022 and Senior Director of Project Execution from June 2019 to September 2021. Prior to that, at Siemens, Mr. Horstman served as Senior Executive Vice President Americas from April 2017 to December 2018, as Vice President of Global Customer Operations from April 2016 to April 2017, and as Vice President of Global Manufacturing & Test from December 2014 to April 2016. Earlier in his career, he held various project and product leadership roles at Rolls-Royce from 2011 to 2014 and General Electric from 1999 to 2011. Mr. Horstman began his career as an Engineer Officer in the U.S. Army. He holds a B.S. in Mechanical Engineering from the University of Dayton.