0001628280-26-059076.txt : 20260826 0001628280-26-059076.hdr.sgml : 20260826 20260826160536 ACCESSION NUMBER: 0001628280-26-059076 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20260824 FILED AS OF DATE: 20260826 DATE AS OF CHANGE: 20260826 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Lagi Alessandro CENTRAL INDEX KEY: 0002133360 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-39291 FILM NUMBER: 261322713 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_1787774734.xml FORM 4 X0609 4 2026-08-24 0 0001805077 Eos Energy Enterprises, Inc. EOSE 0002133360 Lagi Alessandro false C/O EOS ENERGY ENTERPRISES, INC. TWO ALLEGHENY CENTER, NOVA TOWER 2 PITTSBURGH PA 15212 0 1 0 0 Chief Financial Officer 0 Restricted Stock Units 2026-08-24 4 A 0 195130 0 A Common Stock 195130 195130 D Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock. The reporting person received a grant of RSUs under the Issuer's 2020 Incentive Plan, which will vest in three installments on each of the first three anniversaries of the grant date, subject to continued service through each vesting date. Not applicable. /s/ Sumeet Puri as attorney-in-fact for Alessandro Lagi 2026-08-26