Eos Energy Enterprises, Inc.

Eos Energy Enterprises, Inc. filed an 8-K on August 6, 2026, stemming from its origins as the de-SPAC successor to B. Riley Principal 150 Merger Corp, which traded under the ticker BMRG and priced its IPO in 2020. The blank-check vehicle was sponsored by B. Riley Financial, a diversified financial services firm, and focused on the energy storage sector. The business combination with Eos Energy closed in November 2020, bringing the zinc-based battery storage company to Nasdaq, where the combined entity subsequently traded under the ticker EOSE. Eos Energy develops long-duration, zinc-based storage solutions targeting grid-scale applications. Sign up at SpacDesk for complete filing histories, sponsor profiles, and real-time data across the full SPAC universe.