Eos Energy Enterprises, Inc. (NASDAQ:EOSE) announced Monday that Russ Stidolph will step down as non-executive Chair of the Board of Directors, effective December 31, 2025, after serving in the role since April 2018. The announcement comes as EOSE stock trades at $12.89, having delivered an impressive 186% return over the past year.<\/p>\n\n\n\n
Joseph Nigro, who joined the board earlier this year, will succeed Stidolph as non-executive Chair beginning January 1, 2026. Stidolph, whose firm AltEnergy, LLC has been a lead investor in Eos for eleven years, is departing to focus full-time on AltEnergy Acquisition Corp.<\/p>\n\n\n\n
During Stidolph\u2019s tenure, Eos evolved from an early-stage research and development company into a manufacturer of zinc-based battery energy storage systems, achieving a NASDAQ listing and deploying over 5 GWh of operations. The company has shown remarkable revenue growth of 324% in the last twelve months, though InvestingPro<\/a> data indicates it remains unprofitable with a negative EBITDA of $207 million.<\/p>\n\n\n\n “Without Russ\u2019 leadership, there would be no Eos,” said Joe Mastrangelo, Eos Chief Executive Officer, in the company\u2019s press release.<\/p>\n\n\n\n Nigro brings more than three decades of energy industry experience to the role, having previously served as Chief Financial Officer of Exelon Corporation and CEO of Constellation. Since joining the Eos board in early 2025, he has been involved in shaping the company\u2019s strategic direction.<\/p>\n\n\n\n Eos specializes in manufacturing zinc-based battery energy storage systems in the United States. The company\u2019s technology, called Znyth, is designed for utility-scale, microgrid, commercial, and industrial long-duration energy storage applications ranging from 4 to 16+ hours. According to InvestingPro<\/a> analysis, EOSE operates with a moderate level of debt and maintains liquid assets that exceed short-term obligations, with a current ratio of 1.83.<\/p>\n\n\n\n