Eos Energy Enterprises Executive and Leadership Team

Joe Mastrangelo, the Chief Executive Officer at Eos Energy Enterprises, directs the overarching corporate strategy and long-term vision for zinc-based energy storage manufacturing. By aligning internal production capabilities with utility-scale market demands, the Chief Executive Officer ensures the company maintains a competitive edge against conventional lithium-ion alternatives. Mastrangelo oversees the expansion of domestic manufacturing footprints, driving North American initiatives to scale production capacity for grid and industrial applications. This leadership role involves constant engagement with the Board to secure capital for research and development, ensuring the organization meets aggressive growth targets. Through rigorous oversight of the executive team, Joe Mastrangelo fosters a culture of operational excellence and technical innovation. Ultimately, the Chief Executive Officer secures the financial health of the business while positioning the proprietary battery chemistry as the standard for safe, durable, and sustainable energy storage solutions in the modern power sector.

John Mahaz, the Chief Operating Officer at Eos Energy Enterprises, manages the end-to-end manufacturing processes and supply chain logistics for zinc-based battery systems. By optimizing factory throughput and material procurement, the Chief Operating Officer ensures the consistent delivery of high-quality energy storage equipment to utility and commercial clients. Mahaz coordinates with engineering teams to refine product architecture, translating complex design requirements into efficient, large-scale production workflows. This role involves monitoring operational performance across regional facilities to maintain safety standards and cost-effectiveness. John Mahaz drives the implementation of advanced control platforms, ensuring that every deployed storage solution meets rigorous performance benchmarks. Through meticulous management of daily operations, the Chief Operating Officer supports the company mission of providing reliable, non-lithium energy alternatives. Ultimately, Mahaz stabilizes the production pipeline, enabling the business to meet the increasing demand for grid-scale energy storage solutions across diverse industrial sectors.

Francis Richey, the Chief Technology Officer at Eos Energy Enterprises, architects the proprietary battery chemistry and control platforms that define the company product portfolio. By leading research and development efforts, the Chief Technology Officer advances the durability and safety profiles of zinc-based storage systems compared to traditional lithium-ion technology. Richey oversees the integration of software and hardware components, ensuring that every energy storage solution functions seamlessly within complex grid and local power environments. This leadership role involves collaborating with manufacturing teams to transition experimental designs into commercially viable products. Francis Richey drives technical innovation, focusing on the evolution of battery architecture to meet the specific needs of utility and industrial customers. Through continuous testing and refinement of energy storage systems, the Chief Technology Officer maintains the technological superiority of the brand. Ultimately, Richey secures the intellectual property and technical roadmap necessary for long-term market leadership in the clean energy sector.

Marie Martin, the Chief Legal Officer at Eos Energy Enterprises, manages all corporate governance, regulatory compliance, and intellectual property protection for the clean energy technology manufacturer. By overseeing legal frameworks related to domestic manufacturing and product deployment, the Chief Legal Officer ensures the business operates within the complex regulatory requirements of the energy sector. Martin directs contract negotiations with utility and industrial partners, safeguarding the commercial interests of the organization during large-scale project rollouts. This role involves advising the executive team on risk mitigation strategies and corporate policy, ensuring alignment with broader business objectives. Marie Martin protects the proprietary battery chemistry through robust patent strategies and legal defense. Through proactive management of legal affairs, the Chief Legal Officer supports the company mission of delivering safe and durable energy storage solutions. Ultimately, Martin provides the necessary legal foundation for the company to scale operations and expand its influence in the global energy market.