Mr. Demetriou has served as executive chair of the board at Amentum Holdings, Inc. a provider of engineering and technology services, since September 2024 and formerly served as the chief executive officer (from 2015 to January 2023) and executive chair of the board of directors (from January 2023 to September 2024) of Jacobs Solutions Inc. ( Jacobs ) (formerly Jacobs Engineering Group Inc.), a provider of technical professional services, including consulting, technical, scientific and project delivery for the government and private sector. He currently serves as a director of two other public companies: Arcosa, Inc., a provider of infrastructure-related products and solutions, and Amentum Holdings . He previously served as chair of the board of C5 Acquisition Corporation from January 2022 to November 2023. He previously served as chairman and chief executive officer (from 2004 to 2015) of Aleris Corporation, a manufacturer of aluminum rolled products and as a director of Kraton Corporation (from 2009 to 2017). Mr. Demetriou received his Bachelor of Science degree in chemical engineering from Tufts University. He has extensive experience in leadership and senior management roles, including the role of chief executive officer. In addition, he brings experience in a variety of industries, including engineering, construction and oil and gas. He also has substantial experience with a company that provides cybersecurity, sustainability and environmental related solutions. His extensive executive and board experience has equipped him with leadership skills and the knowledge of board processes and functions. This experience qualifies him to serve as a member of your Board.