B. Riley Principal 150 Merger Corp, trading under the ticker BMRG, was a blank-check company sponsored by B. Riley Financial that completed its initial public offering in 2020 with a focus on the energy and industrial technology sectors. The SPAC filed a Form 10-Q with the SEC on August 12, 2020, reflecting its pre-combination operating status as it pursued a target in the energy storage space. BMRG ultimately announced a business combination with Eos Energy Enterprises, Inc., a developer of zinc-based battery storage systems, with the transaction closing in late 2020 and the combined company subsequently trading under the ticker EOSE. Sign up at SpacDesk for full filing history, deal terms, and sponsor data on BMRG and hundreds of other SPACs.