Andrew J. Marsh served as the Company's Chief Executive Officer from April 2008 through March 2026 and has been a member of the Board of Directors since April 2008. In March 2026, Mr. Marsh transitioned from serving as a director of the Board and Chief Executive Officer to serving as non-executive Chairman of the Board. In this role, Mr. Marsh presides at Board meetings and the annual meeting of stockholders, supports critical external relationships as determined by the Chief Executive Officer, and otherwise performs customary chair duties. In addition, Mr. Marsh serves as a consultant to the Company in a transitional advisory capacity and provides strategic advisory support to the Board of Directors and the Chief Executive Officer on matters of strategy, governance, and long-term planning, while no longer participating in the Company's day-to-day operations. During his tenure at Plug Power, Mr. Marsh has led the Company's transformation into a global provider of hydrogen and fuel cell solutions, overseeing the expansion of its product portfolio, manufacturing footprint, and hydrogen infrastructure. Under his leadership, Plug Power has evolved from a single-product fuel cell company into a vertically integrated platform supporting material handling, stationary power, electrolyzers, hydrogen production, storage, and delivery. Mr. Marsh has played a central role in shaping the Company's long-term strategy, building its management team, expanding its global presence, and strengthening relationships with customers, partners, and government stakeholders. Mr. Marsh also serves as a member of the board of directors of Gevo, Inc., a publicly traded renewable chemicals and advanced biofuels company. Previously, Mr. Marsh co-founded Valere Power and served as its Chief Executive Officer until the company was acquired by Eltek ASA in 2007. Prior to that, he spent nearly 18 years at Lucent Bell Laboratories in technical, sales, and management roles. Mr. Marsh is an established leader in the hydrogen and fuel cell industry and has been actively engaged in public-private initiatives supporting the energy transition. He previously served as Chairman of the Fuel Cell and Hydrogen Energy Association and as a member of the U.S. Department of Energy's Hydrogen and Fuel Cell Technical Advisory Committee. In addition, Mr. Marsh serves as Chair of the U.S. Net Zero Advisory Board for Northern Ireland, where he works with industry and government leaders to support the development of low-carbon energy and industrial strategies. Mr. Marsh holds a Bachelor of Science in Electrical Engineering Technology from Temple University, a Master of Science in Electrical Engineering from Duke University, and a Master of Business Administration from Southern Methodist University. He remains engaged with Temple University through advisory and alumni activities, including service on the College of Engineering Board of Visitors. We believe Mr. Marsh is qualified to serve as Chairman and as a director based on his extensive leadership experience, deep understanding of the alternative energy sector, and long tenure guiding the Company's strategy and growth.