 B. Riley Principal Merger Corp. II NYSE: BMRG, BMRG WS, BMRG.U BRPM II, a special purpose acquisition company sponsored by an affiliate of B. Riley Financial, Inc. NASDAQ: RILY B. Riley Financial, and privately held Eos Energy Storage LLC Eos today announced they have executed a letter of intent LOI for a business combination transaction transaction which would result in Eos becoming a publicly listed company. 