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Mr. Stidolph is the managing director of AltEnergy, the managing member of each of AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II, and has voting and dispositive power with respect to the securities owned by AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II. 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Mr. Stidolph is the managing director of AltEnergy, the managing member of each of AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II, and has voting and dispositive power with respect to the securities owned by AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II. 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Mr. Stidolph is the managing director of AltEnergy, the managing member of each of AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II, a trustee of the Trust, and has voting and dispositive power with respect to the securities owned by AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission, Bridge II and the Trust. 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The reporting person disclaims beneficial ownership of the reported securities held by the Trust except to the extent of his pecuniary interest therein."}],"balance_after":5744666,"source":{"system":"sec-edgar","filing":"0001628280-21-015420","document":"wf-form4_162803465627618.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1833882/000162828021015420/wf-form4_162803465627618.xml","form_type":"4"}},{"id":2618954,"issuer":{"id":4901,"kind":"organization","name":"Eos Energy Enterprises, Inc.","symbol":"EOSE"},"owners":[{"id":72071,"kind":"person","name":"Stidolph Russell Monoki","position":1,"cik":"0001833275","reported_name":"Stidolph Russell Monoki","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131873,"kind":"organization","name":"AltEnergy, LLC","position":2,"cik":"0001833898","reported_name":"AltEnergy, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131874,"kind":"organization","name":"AltEnergy Storage II LLC","position":3,"cik":"0001833882","reported_name":"AltEnergy Storage II LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131875,"kind":"organization","name":"AltEnergy Storage V LLC","position":4,"cik":"0001833884","reported_name":"AltEnergy Storage V LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131876,"kind":"organization","name":"AltEnergy Storage VI LLC","position":5,"cik":"0001833881","reported_name":"AltEnergy Storage VI LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131877,"kind":"organization","name":"AltEnergy Storage Bridge LLC","position":6,"cik":"0001833879","reported_name":"AltEnergy Storage Bridge LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131878,"kind":"organization","name":"AltEnergy Transmission LLC","position":7,"cik":"0001833880","reported_name":"AltEnergy Transmission LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131879,"kind":"organization","name":"AltEnergy Storage Bridge Phase II LLC","position":8,"cik":"0001833885","reported_name":"AltEnergy Storage Bridge Phase II LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-08-03T19:51:33.000Z","date":"2021-07-30","kind":"other","acquired":true,"shares":815026,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Represents the receipt, for no consideration, of an aggregate of 815,026 shares of Common Stock of the Issuer by AltEnergy pursuant to pro rata distributions by each of AltEnergy I, AltEnergy II, AltEnergy V, Bridge and Bridge II."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares reported in this Form 4 are shares of common stock in which Mr. Stidoloph has a pecuniary interest in that are held directly byAltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission or Bridge II.  Mr. Stidolph is the managing director of AltEnergy, the managing member of each of AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II, and has voting and dispositive power with respect to the securities owned by AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II. Each of the Filing Persons disclaims beneficial ownership of the outstanding shares of common stock of the issuer reported herein except to the extent of its pecuniary interest therein."}],"balance_after":5600505,"source":{"system":"sec-edgar","filing":"0001628280-21-015420","document":"wf-form4_162803465627618.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1833882/000162828021015420/wf-form4_162803465627618.xml","form_type":"4"}},{"id":2618953,"issuer":{"id":4901,"kind":"organization","name":"Eos Energy Enterprises, Inc.","symbol":"EOSE"},"owners":[{"id":72071,"kind":"person","name":"Stidolph Russell Monoki","position":1,"cik":"0001833275","reported_name":"Stidolph Russell Monoki","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131873,"kind":"organization","name":"AltEnergy, LLC","position":2,"cik":"0001833898","reported_name":"AltEnergy, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131874,"kind":"organization","name":"AltEnergy Storage II LLC","position":3,"cik":"0001833882","reported_name":"AltEnergy Storage II LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131875,"kind":"organization","name":"AltEnergy Storage V LLC","position":4,"cik":"0001833884","reported_name":"AltEnergy Storage V LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131876,"kind":"organization","name":"AltEnergy Storage VI LLC","position":5,"cik":"0001833881","reported_name":"AltEnergy Storage VI LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131877,"kind":"organization","name":"AltEnergy Storage Bridge LLC","position":6,"cik":"0001833879","reported_name":"AltEnergy Storage Bridge LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131878,"kind":"organization","name":"AltEnergy Transmission LLC","position":7,"cik":"0001833880","reported_name":"AltEnergy Transmission LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131879,"kind":"organization","name":"AltEnergy Storage Bridge Phase II LLC","position":8,"cik":"0001833885","reported_name":"AltEnergy Storage Bridge Phase II LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-08-03T19:51:33.000Z","date":"2021-07-30","kind":"other","acquired":false,"shares":2349630,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"AltEnergy Storage, LLC, a Delaware limited liability company (\"AltEnergy I\"), AltEnergy Storage II, LLC, a Delaware limited liability company (\"AltEnergy II\"), AltEnergy Storage V, LLC, a Delaware limited liability company (\"AltEnergy V\"), AltEnergy Storage Bridge Phase II, LLC, a Delaware limited liability company (\"Bridge II\") and AltEnergy Storage Bridge, LLC, a Delaware limited liability company (\"Bridge\") made pro rata distributions for no consideration of an aggregate of 2,349,630 shares of Common Stock of the Issuer to their respective members on July 30, 2021."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"In addition to Russell Stidolph, a natural person (\"Mr. Stidolph\"), this Form 4 is being filed jointly by AltEnergy LLC, a Delaware limited liability company (\"AltEnergy\"); (ii) AltEnergy I; (iii) AltEnergy II; (iv) AltEnergy V; (v) AltEnergy VI LLC, a Delaware limited liability company (\"AltEnergy VI\"); (vi) Bridge; (vii) AltEnergy Transmission LLC, a Delaware limited liability company (\"Transmission\"); and (viii) Bridge II (collectively, the \"Filing Persons\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares reported in this Form 4 are shares of common stock in which Mr. Stidoloph has a pecuniary interest in that are held directly byAltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission or Bridge II.  Mr. Stidolph is the managing director of AltEnergy, the managing member of each of AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II, and has voting and dispositive power with respect to the securities owned by AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II. Each of the Filing Persons disclaims beneficial ownership of the outstanding shares of common stock of the issuer reported herein except to the extent of its pecuniary interest therein."}],"balance_after":4785479,"source":{"system":"sec-edgar","filing":"0001628280-21-015420","document":"wf-form4_162803465627618.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1833882/000162828021015420/wf-form4_162803465627618.xml","form_type":"4"}},{"id":2810126,"issuer":{"id":4901,"kind":"organization","name":"Eos Energy Enterprises, Inc.","symbol":"EOSE"},"owners":[{"id":72071,"kind":"person","name":"Stidolph Russell Monoki","position":1,"cik":"0001833275","reported_name":"Stidolph Russell Monoki","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131873,"kind":"organization","name":"AltEnergy, LLC","position":2,"cik":"0001833898","reported_name":"AltEnergy, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131874,"kind":"organization","name":"AltEnergy Storage II LLC","position":3,"cik":"0001833882","reported_name":"AltEnergy Storage II LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131875,"kind":"organization","name":"AltEnergy Storage V LLC","position":4,"cik":"0001833884","reported_name":"AltEnergy Storage V LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131876,"kind":"organization","name":"AltEnergy Storage VI LLC","position":5,"cik":"0001833881","reported_name":"AltEnergy Storage VI LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131877,"kind":"organization","name":"AltEnergy Storage Bridge LLC","position":6,"cik":"0001833879","reported_name":"AltEnergy Storage Bridge LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131878,"kind":"organization","name":"AltEnergy Transmission LLC","position":7,"cik":"0001833880","reported_name":"AltEnergy Transmission LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131879,"kind":"organization","name":"AltEnergy Storage Bridge Phase II LLC","position":8,"cik":"0001833885","reported_name":"AltEnergy Storage Bridge Phase II LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-03-04T14:17:38.000Z","date":"2021-03-02","kind":"other","acquired":false,"shares":92375,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"AltEnergy Storage Bridge Phase II, LLC and AltEnergy Storage Bridge, LLC made pro rata distributions for no consideration of an aggregate of 92,375 shares of Common Stock of the Issuer to their respective members on March 2, 2021."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"In addition to Russell Stidolph, a natural person (\"Mr. Stidolph\"), this Form 4 is being filed jointly by AltEnergy LLC, a Delaware limited liability company (\"AltEnergy\"); (ii) AltEnergy Storage LLC, a Delaware limited liability company (\"AltEnergy I\"); (iii) AltEnergy Storage II LLC, a Delaware limited liability company (\"AltEnergy II\"); (iv) AltEnergy Storage V LLC, a Delaware limited liability company (\"AltEnergy V\"); (v) AltEnergy VI LLC, a Delaware limited liability company (\"AltEnergy VI\"); AltEnergy Storage Bridge LLC, a Delaware limited liability company (\"Bridge\"); AltEnergy Transmission LLC, a Delaware limited liability company (\"Transmission\"); AltEnergy Storage Bridge Phase II LLC (\"Bridge II\" and collectively, the \"Filing Persons\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares reported in this Form 4 are shares of common stock in which Mr. Stidoloph has a pecuniary interest in that are held directly byAltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission or Bridge II.  Mr. Stidolph is the managing director of AltEnergy, the managing member of each of AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II, and has voting and dispositive power with respect to the securities owned by AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II. Each of the Filing Persons disclaims beneficial ownership of the outstanding shares of common stock of the issuer reported herein except to the extent of its pecuniary interest therein."}],"balance_after":7135109,"source":{"system":"sec-edgar","filing":"0001628280-21-003915","document":"wf-form4_161488543587751.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1833882/000162828021003915/wf-form4_161488543587751.xml","form_type":"4"}},{"id":2860817,"issuer":{"id":4901,"kind":"organization","name":"Eos Energy Enterprises, Inc.","symbol":"EOSE"},"owners":[{"id":72071,"kind":"person","name":"Stidolph Russell Monoki","position":1,"cik":"0001833275","reported_name":"Stidolph Russell Monoki","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131873,"kind":"organization","name":"AltEnergy, LLC","position":2,"cik":"0001833898","reported_name":"AltEnergy, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131874,"kind":"organization","name":"AltEnergy Storage II LLC","position":3,"cik":"0001833882","reported_name":"AltEnergy Storage II LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131875,"kind":"organization","name":"AltEnergy Storage V LLC","position":4,"cik":"0001833884","reported_name":"AltEnergy Storage V LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131876,"kind":"organization","name":"AltEnergy Storage VI LLC","position":5,"cik":"0001833881","reported_name":"AltEnergy Storage VI LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131877,"kind":"organization","name":"AltEnergy Storage Bridge LLC","position":6,"cik":"0001833879","reported_name":"AltEnergy Storage Bridge LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131878,"kind":"organization","name":"AltEnergy Transmission LLC","position":7,"cik":"0001833880","reported_name":"AltEnergy Transmission LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":131879,"kind":"organization","name":"AltEnergy Storage Bridge Phase II LLC","position":8,"cik":"0001833885","reported_name":"AltEnergy Storage Bridge Phase II LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-02-16T19:04:26.000Z","date":"2021-02-11","kind":"grant","acquired":true,"shares":449559,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The 449,559 shares of common stock of the issuer reported on this Form 4 were distributed to the reporting persons as earnout consideration pursuant that certain agreement and plan of merger, dated September 7, 2020, by and among the issuer and the other parties signatory thereto. The earnout consideration was contingent upon the price per share of the issuer's common stock exceeding certain thresholds, which thresholds were achieved as of January 21, 2021. The issuer informed the reporting persons of the number of shares issuable pursuant to the earnout as of February 11, 2021."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"In addition to Russell Stidolph, a natural person (\"Mr. Stidolph\"), this Form 4 is being filed jointly by AltEnergy LLC, a Delaware limited liability company (\"AltEnergy\"); (ii) AltEnergy Storage LLC, a Delaware limited liability company (\"AltEnergy I\"); (iii) AltEnergy Storage II LLC, a Delaware limited liability company (\"AltEnergy II\"); (iv) AltEnergy Storage V LLC, a Delaware limited liability company (\"AltEnergy V\"); (v) AltEnergy VI LLC, a Delaware limited liability company (\"AltEnergy VI\"); AltEnergy Storage Bridge LLC, a Delaware limited liability company (\"Bridge\"); AltEnergy Transmission LLC, a Delaware limited liability company (\"Transmission\"); AltEnergy Storage Bridge Phase II LLC (\"Bridge II\" and collectively, the \"Filing Persons\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares reported in this Form 4 are shares of common stock in which Mr. Stidoloph has a pecuniary interest in that are held directly by AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission or Bridge II. Mr. Stidolph is the managing director of AltEnergy, the managing member of each of AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II, and has voting and dispositive power with respect to the securities owned by AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II. Each of the Filing Persons disclaims beneficial ownership of the outstanding shares of common stock of the issuer reported herein except to the extent of its pecuniary interest therein."}],"balance_after":7227484,"source":{"system":"sec-edgar","filing":"0001213900-21-009789","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1833882/000121390021009789/ownership.xml","form_type":"4"}}]}