0001628280-26-048348.txt : 20260715 0001628280-26-048348.hdr.sgml : 20260715 20260715170136 ACCESSION NUMBER: 0001628280-26-048348 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20260713 FILED AS OF DATE: 20260715 DATE AS OF CHANGE: 20260715 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Song Haiyan CENTRAL INDEX KEY: 0001804708 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-39291 FILM NUMBER: 261177976 MAIL ADDRESS: STREET 1: TWO ALLEGHENY CENTER STREET 2: NOVA TOWER 2 CITY: PITTSBURGH STATE: PA ZIP: 15212 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Eos Energy Enterprises, Inc. CENTRAL INDEX KEY: 0001805077 STANDARD INDUSTRIAL CLASSIFICATION: MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690] ORGANIZATION NAME: 04 Manufacturing EIN: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: TWO ALLEGHENY CENTER STREET 2: NOVA TOWER 2 CITY: PITTSBURGH STATE: PA ZIP: 15212 BUSINESS PHONE: (732) 225-8400 MAIL ADDRESS: STREET 1: TWO ALLEGHENY CENTER STREET 2: NOVA TOWER 2 CITY: PITTSBURGH STATE: PA ZIP: 15212 FORMER COMPANY: FORMER CONFORMED NAME: B. Riley Principal Merger Corp. II DATE OF NAME CHANGE: 20200227 4 1 wk-form4_1784149294.xml FORM 4 X0609 4 2026-07-13 0 0001805077 Eos Energy Enterprises, Inc. EOSE 0001804708 Song Haiyan false C/O EOS ENERGY ENTERPRISES, INC. TWO ALLEGHENY CENTER, NOVA TOWER 2 PITTSBURGH PA 15212 1 0 0 0 0 Restricted Stock Units 2026-07-13 4 A 0 29980 0 A Common Stock 29980 29980 D Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock. The reporting person was granted RSUs that settle in cash or common stock, which will vest on the earlier of (i) the first anniversary of the grant date and (ii) immediately prior to the date of the next annual shareholders meeting of the Company following the grant date. Not applicable. /s/ Marie Martin as attorney-in-fact for Haiyan Song 2026-07-15