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.
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.
During Stidolph’s 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 data indicates it remains unprofitable with a negative EBITDA of $207 million.
“Without Russ’ leadership, there would be no Eos,” said Joe Mastrangelo, Eos Chief Executive Officer, in the company’s press release.
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’s strategic direction.
Eos specializes in manufacturing zinc-based battery energy storage systems in the United States. The company’s 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 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.
The company positions its technology as an alternative to conventional lithium-ion batteries, highlighting its non-flammable and stable characteristics using non-precious earth components. Despite its technological advantages, InvestingPro data shows EOSE is currently trading above its Fair Value, with analysts projecting continued sales growth but no profitability this year. The stock’s high volatility (Beta of 2.15) reflects both its growth potential and inherent risks. Investors seeking deeper insights can access EOSE’s comprehensive Pro Research Report, one of 1,400+ detailed analyses available exclusively to subscribers.
In other recent news, Eos Energy Enterprises has secured approximately $1.04 billion in financing to expand its U.S. battery production. This includes a $600 million convertible senior notes offering with a 1.75% interest rate due in 2031, generating net proceeds of about $580.5 million. Additionally, the company completed a registered direct offering of 35.9 million shares of common stock at $12.78 per share, raising approximately $458.2 million. Stifel has maintained its Buy rating for Eos Energy, with a price target of $22.00, following the company’s recent balance sheet restructuring. The firm priced a $525 million convertible senior note offering with a 1.75% coupon due in 2031, featuring a conversion price of $16.29. JPMorgan initiated coverage of Eos Energy with a Neutral rating, setting a year-end 2026 price target of $16.00. The firm noted the potential of long-duration energy storage as a significant factor for renewable power generation. These developments reflect Eos Energy’s strategic financial maneuvers and analyst perspectives on its future.
