{"transactions":[{"id":4619393,"issuer":{"id":4901,"kind":"organization","name":"Eos Energy Enterprises, Inc.","symbol":"EOSE"},"owners":[{"id":19560,"kind":"person","name":"Puri Sumeet","position":1,"cik":"0001991521","reported_name":"Puri Sumeet","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Performance-Based Restricted Stock Units","published_at":"2026-09-16T20:28:27.000Z","date":"2026-09-14","kind":"exercise","planned":true,"acquired":false,"shares":87500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On July 5, 2024, the Reporting Person was granted performance-based restricted stock units (\"2024 PRSU Awards\"). 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On September 14, 2026, the Compensation Committee of the Issuer's Board of Directors certified the achievement of the first performance period, resulting in the vesting of these shares."},{"field":"shares","element":"transactionShares","label":"F4","text":"Represents the outstanding awarded and vested units pursuant to the 2024 PRSU Awards dated July 25, 2024 related to the achievement of certain total shareholder return objectives."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Not applicable."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":87500},"source":{"system":"sec-edgar","filing":"0001628280-26-062273","document":"wk-form4_1789590505.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1991521/000162828026062273/wk-form4_1789590505.xml","form_type":"4"}},{"id":4619392,"issuer":{"id":4901,"kind":"organization","name":"Eos Energy Enterprises, Inc.","symbol":"EOSE"},"owners":[{"id":19560,"kind":"person","name":"Puri Sumeet","position":1,"cik":"0001991521","reported_name":"Puri Sumeet","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-09-16T20:28:27.000Z","date":"2026-09-16","kind":"sale","planned":true,"acquired":false,"shares":43750,"price":3.92,"value":171500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 15, 2025 to cover estimated tax withholding obligations in connection with the vesting of performance-based restricted stock units."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. 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The 2024 PRSU Awards are eligible to vest in up to two installments based on the total shareholder return of the Issuer over two- and three-year performance periods, each commencing on July 5, 2024. 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These shares were sold in multiple transactions at prices ranging from $4.07 to $4.27, inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above."}],"balance_after":236445,"source":{"system":"sec-edgar","filing":"0001628280-26-061188","document":"wk-form4_1788991502.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1991521/000162828026061188/wk-form4_1788991502.xml","form_type":"4"}},{"id":4613726,"issuer":{"id":4901,"kind":"organization","name":"Eos Energy Enterprises, Inc.","symbol":"EOSE"},"owners":[{"id":19560,"kind":"person","name":"Puri Sumeet","position":1,"cik":"0001991521","reported_name":"Puri Sumeet","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common 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These shares were sold in multiple transactions at prices ranging from $3.23 to $3.44, inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above."}],"balance_after":202279,"source":{"system":"sec-edgar","filing":"0001628280-26-050230","document":"wk-form4_1785272585.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1991521/000162828026050230/wk-form4_1785272585.xml","form_type":"4"}},{"id":702298,"issuer":{"id":4901,"kind":"organization","name":"Eos Energy Enterprises, Inc.","symbol":"EOSE"},"owners":[{"id":19560,"kind":"person","name":"Puri Sumeet","position":1,"cik":"0001991521","reported_name":"Puri Sumeet","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-07-28T21:03:08.000Z","date":"2026-07-25","kind":"exercise","planned":true,"acquired":true,"shares":58334,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of common stock."}],"balance_after":231446,"source":{"system":"sec-edgar","filing":"0001628280-26-050230","document":"wk-form4_1785272585.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1991521/000162828026050230/wk-form4_1785272585.xml","form_type":"4"}},{"id":722949,"issuer":{"id":4901,"kind":"organization","name":"Eos Energy Enterprises, Inc.","symbol":"EOSE"},"owners":[{"id":19560,"kind":"person","name":"Puri Sumeet","position":1,"cik":"0001991521","reported_name":"Puri Sumeet","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Restricted Stock Units","published_at":"2026-06-30T21:07:33.000Z","date":"2026-06-26","kind":"exercise","planned":true,"acquired":false,"shares":17545,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F4","text":"The reporting person received a grant of RSUs under the Issuer's 2020 Incentive Plan, which will vest in three equal installments on each of the first three anniversaries of the grant date, subject to continued service through each vesting date."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Not applicable."}],"balance_after":35389,"derivative":{"underlying":"Common Stock","underlying_shares":17545},"source":{"system":"sec-edgar","filing":"0001628280-26-046292","document":"wk-form4_1782853651.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1991521/000162828026046292/wk-form4_1782853651.xml","form_type":"4"}},{"id":722948,"issuer":{"id":4901,"kind":"organization","name":"Eos Energy Enterprises, Inc.","symbol":"EOSE"},"owners":[{"id":19560,"kind":"person","name":"Puri Sumeet","position":1,"cik":"0001991521","reported_name":"Puri Sumeet","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-30T21:07:33.000Z","date":"2026-06-30","kind":"sale","planned":true,"acquired":false,"shares":8823,"price":5.86,"value":51702.78,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2025 to cover estimated tax withholding obligations in connection with the vesting of restricted stock units."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.68 to $6.12, inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above."}],"balance_after":173112,"source":{"system":"sec-edgar","filing":"0001628280-26-046292","document":"wk-form4_1782853651.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1991521/000162828026046292/wk-form4_1782853651.xml","form_type":"4"}},{"id":722947,"issuer":{"id":4901,"kind":"organization","name":"Eos Energy Enterprises, Inc.","symbol":"EOSE"},"owners":[{"id":19560,"kind":"person","name":"Puri Sumeet","position":1,"cik":"0001991521","reported_name":"Puri Sumeet","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-06-30T21:07:33.000Z","date":"2026-06-26","kind":"exercise","planned":true,"acquired":true,"shares":17645,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of common stock."}],"balance_after":181935,"source":{"system":"sec-edgar","filing":"0001628280-26-046292","document":"wk-form4_1782853651.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1991521/000162828026046292/wk-form4_1782853651.xml","form_type":"4"}},{"id":1046032,"issuer":{"id":4901,"kind":"organization","name":"Eos Energy Enterprises, Inc.","symbol":"EOSE"},"owners":[{"id":19560,"kind":"person","name":"Puri Sumeet","position":1,"cik":"0001991521","reported_name":"Puri Sumeet","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Restricted Stock Units","published_at":"2025-09-08T20:47:38.000Z","date":"2025-09-05","kind":"exercise","planned":true,"acquired":false,"shares":68334,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F6","text":"The reporting person received a grant of RSUs under the Issuer's 2020 Incentive Plan, which will vest in three equal installments on each of the first three anniversaries of the grant date, subject to continued service through each vesting date."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (\"RSU\") represents a contingent right to receive one share of common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"Not applicable."}],"balance_after":68333,"derivative":{"underlying":"Common Stock","underlying_shares":68334},"source":{"system":"sec-edgar","filing":"0001991521-25-000005","document":"wk-form4_1757364456.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1991521/000199152125000005/wk-form4_1757364456.xml","form_type":"4"}},{"id":1046031,"issuer":{"id":4901,"kind":"organization","name":"Eos Energy Enterprises, Inc.","symbol":"EOSE"},"owners":[{"id":19560,"kind":"person","name":"Puri Sumeet","position":1,"cik":"0001991521","reported_name":"Puri Sumeet","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2025-09-08T20:47:38.000Z","date":"2025-09-08","kind":"sale","planned":true,"acquired":false,"shares":20000,"price":7.25,"value":145000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"The transaction reported represents a sale by the reporting person to satisfy estimated tax liabilities arising from vesting of restricted stock units on July 25, 2025 and September 5, 2025, to the extent the estimated tax liabilities exceeded the amount sold on July 29, 2025 and September 8, 2025  pursuant to the Rule 10b5-1 trading plan adopted by the reporting person on March 14, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.20 to $7.37, inclusive. 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The Issuer has adopted a \"sell-to-cover\" policy to satisfy the tax withholding obligations of the Reporting Person.  Such sales were automatic and not at the discretion of the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. 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