Business
Eos Energy Honors Outgoing Chair Russ Stidolph for Years of Leadership and Investment and Appoints Industry Veteran Joseph Nigro as Chair of the Board of Directors
EDISON, N.J., Dec. 22, 2025 (GLOBE NEWSWIRE) -- Eos Energy Enterprises, Inc. (NASDAQ: EOSE) ("Eos" or the “Company”) an American energy company and the
About this update from Eos Energy Enterprises, Inc.
[{"type":"text","content":"EDISON, N.J., Dec. 22, 2025 (GLOBE NEWSWIRE) -- Eos Energy Enterprises, Inc. (NASDAQ: EOSE) (\"Eos\" or the “Company”) an American energy company and the leading innovator in designing, sourcing, manufacturing, and providing zinc-based battery energy storage systems (BESS) manufactured in the United States, today announced that Russ Stidolph, who has served as non-executive Chair since April 2018 and whose firm, AltEnergy, LLC, has been a lead investor in Eos for the past eleven years, has decided to step down from the Board of Directors, effective December 31, 2025, to focus his efforts, full time, on AltEnergy Acquisition Corp. The Board has appointed Joseph Nigro to succeed Stidolph as non-executive Chair, effective January 1, 2026. “I am proud to have played an integral role in guiding Eos from an early-stage research and development company into a scaled leader of stationary energy storage. When AltEnergy first invested in Eos, the Company built prototype battery cells that to this day cycle twice daily. Watching that product then successfully be piloted in the field, establishing a U.S. manufacturing strategy, building a robust pipeline and backlog and successfully deploying over 5 GWh of operations in the field are accomplishments I will always be proud of,” stated Stidolph. “Bringing Joe Nigro onto the Board earlier this year, with his more than three decades of global energy, utility, and infrastructure experience, positioned Eos for a seamless leadership transition to its next phase of operations and growth.” Stidolph played a foundational role in Eos’ evolution from its early commercialization efforts to its NASDAQ listing and growth into a scaled American manufacturer. Stidolph has been one of Eos’ earliest and most enduring champions – first as an investor more than a decade ago and later as a Director and Chair. “Without Russ’ leadership, there would be no Eos,” said Joe Mastrangelo, Eos Chief Executive Officer. “From bringing the required capital along with always recognizing the long-term potential of Eos to recruiting me to the Company, Russ has been instrumental in getting us to where we stand today and we are grateful for his leadership and the many contributions he has made to Eos’ evolution.” “Russ leaves Eos with a strong foundation for the future,” said Nigro. “His leadership and continued investment allow...