Eos Energy faces class action over overstated production and revenue guidance, stock plunges 39%.

Eos Energy Enterprises is facing a securities class action lawsuit after admitting it overstated its ability to scale automated production of zinc-based batteries and missed its 2025 revenue guidance by over 25%. The company revealed significant operational issues including excessive equipment downtime and automation failures, which were previously concealed. Following these disclosures, Eos Energy's stock dropped nearly 40%, wiping out over $1.4 billion in market value. Investors who bought shares between November 2025 and February 2026 have until May 5, 2026, to join the lawsuit as lead plaintiffs.