Eos Energy Enterprises, Inc.

B. Riley Principal 150 Merger Corp (BMRG), a blank-check company sponsored by B. Riley Financial, Inc., completed its IPO on Nasdaq in October 2020, targeting the clean-energy and energy storage sector. The SPAC closed its business combination with Eos Energy Enterprises, a New Jersey-based manufacturer of zinc-based long-duration energy storage systems, in November 2020. Following the merger, the combined company began trading on Nasdaq under the ticker EOSE. Eos Energy Enterprises filed its most recent quarterly report, a 10-Q, with the SEC on August 5, 2026. For comprehensive deal data, filing history, and real-time SPAC intelligence, sign up for a free account at SpacDesk.