Joe Mastrangelo serves as Chief Executive Officer of EOS Energy Enterprises, Inc. (NASDAQ: EOSE), a leading provider of safe, scalable, and sustainable zinc-powered energy storage solutions. Appointed CEO in October 2021, Mastrangelo has steered the company through a transformative period, including its public listing via a SPAC merger and the scaling of its innovative Znyth™ aqueous zinc battery technology. Under his leadership, EOS has expanded its manufacturing footprint with a state-of-the-art facility in Pennsylvania, secured multimillion-dollar contracts with utilities and commercial customers, and pursued strategic partnerships to accelerate deployment of grid-scale energy storage systems. With over three decades of executive experience in high-growth industries, Mastrangelo brings a proven track record from roles at premier aerospace, defense, and energy firms. Prior to EOS, he was President of Controls & Avionics Solutions at BAE Systems, Inc., where he drove operational excellence and innovation across global platforms. His career also includes senior leadership positions at United Technologies Corporation (now RTX), General Electric, and Lockheed Martin, where he spearheaded multimillion-dollar programs in propulsion, power systems, and advanced manufacturing, consistently delivering revenue growth and technological advancements. At EOS, Mastrangelo's strategic vision has positioned the company as a frontrunner in the clean energy transition, emphasizing American-made solutions to meet rising demand for long-duration storage. His achievements include raising over $500 million in capital, achieving key technical milestones like high-volume cell production, and advancing toward a U.S. Department of Energy loan guarantee. Mastrangelo's focus on sustainability, supply chain resilience, and customer-centric innovation continues to propel EOS toward profitability and market leadership.