Eos Energy Enterprises, Inc.

Eos Energy Enterprises, Inc. completed its de-SPAC transaction through B. Riley Principal 150 Merger Corp (Nasdaq: BMRG), a blank-check company sponsored by B. Riley Financial and its affiliate B. Riley Principal Investments, which completed its initial public offering in 2020. The combined company, focused on grid-scale zinc-based energy storage systems targeting the clean energy and industrial power sectors, filed a definitive proxy statement (DEF 14A) with the Securities and Exchange Commission on April 14, 2026, accession number 0001628280-26-025071. The post-merger entity has traded on Nasdaq under the ticker EOSE following the consummation of the business combination. For the complete filing history, sponsor disclosures, and deal metrics on Eos Energy and hundreds of other SPAC transactions, create a free account at SpacDesk.