Eos Energy Enterprises, Inc. 10-Q

Item 5. Other Information. None. 19 Item 6. Exhibits. The following exhibits are filed as part of, or incorporated by reference into, this Quarterly Report on Form 10-Q. Exhibit Index Exhibit No. Description 2.1 Agreement and Plan of Merger, dated as of September 7, 2020, by and among the Registrant, BMRG Merger Sub, LLC, BMRG Merger Sub II, LLC, Eos Energy Storage LLC, New Eos Energy LLC and AltEnergy Storage VI, LLC (incorporated by reference to Exhibit 2.1 of the Registrant’s Current Report on Form 8-K filed with the SEC on September 8, 2020). 10.1 Equity Commitment Letter, dated as of September 7, 2020, by and between the Registrant and B. Riley Financial, Inc. (incorporated by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed with the SEC on September 8, 2020). 31.1* Certification of Chief Executive Officer pursuant to Rules 13a-14 and 15d-14 promulgated under the Securities Exchange Act of 1934 31.2* Certification of Chief Financial Officer pursuant to Rules 13a-14 and 15d-14 promulgated under the Securities Exchange Act of 1934 32.1** Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 32.2** Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 101.INS* XBRL Instance Document 101.SCH* XBRL Taxonomy Extension Schema Document 101.CAL* XBRL Taxonomy Extension Calculation Linkbase Document 101.DEF* XBRL Taxonomy Extension Definition Linkbase Document 101.LAB* XBRL Taxonomy Extension Label Linkbase Document 101.PRE* XBRL Taxonomy Extension Presentation Linkbase Document * Filed herewith ** Furnished herewith 20 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. B. Riley Principal Merger Corp. II Date: November 12, 2020 By: / s / DANIEL SHRIBMAN Name: Daniel Shribman Title: Chief Executive Officer and Chief Financial Officer (Principal Executive Officer and Principal Financial Officer) 21