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Incentive Plan."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Price of Derivative Security is $0."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The restricted stock units were granted to the Reporting Person on September 9, 2026 and will vest in full on September 9, 2029 (contingent upon the Reporting Person's employment with the Issuer on the scheduled vesting date, except as provided for under the Issuer's 2022 Equity and Cash Incentive Plan)."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The restricted stock units were granted to the Reporting Person on September 9, 2026 and will vest in full on September 9, 2029 (contingent upon the Reporting Person's employment with the Issuer on the scheduled vesting date, except as provided for under the Issuer's 2022 Equity and Cash Incentive Plan)."}],"balance_after":2679,"derivative":{"underlying":"Common 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Issuer's 2022 Equity and Cash Incentive Plan."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock under the Issuer's 2022 Equity and Cash Incentive Plan."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Price of Derivative Security is $0."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On September 9, 2026, the Reporting Person was granted 1,496 restricted stock units, which vest as follows: (1) 498 on the first anniversary of the grant, (2) 499 on the second anniversary of the grant and (3) 499 on the third anniversary of the grant (contingent upon the Reporting Person's employment with the Issuer on the scheduled vesting date, except as provided for under the Issuer's 2022 Equity and Cash Incentive Plan)."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On September 9, 2026, the Reporting Person was granted 1,496 restricted stock units, which vest as follows: (1) 498 on the first anniversary of the grant, (2) 499 on the second anniversary of the grant and (3) 499 on the third anniversary of the grant (contingent upon the Reporting Person's employment with the Issuer on the scheduled vesting date, except as provided for under the Issuer's 2022 Equity and Cash Incentive Plan)."}],"balance_after":1496,"derivative":{"underlying":"Common Stock","underlying_shares":1496},"source":{"system":"sec-edgar","filing":"0000007431-26-000067","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1949030/000000743126000067/form4.xml","form_type":"4"}},{"id":756535,"issuer":{"id":42674,"kind":"organization","name":"ENVIRI 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In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled."}],"balance_after":0,"derivative":{"exercise_price":7.45,"expiration_date":"2033-03-07","underlying":"Common Stock","underlying_shares":27364},"source":{"system":"sec-edgar","filing":"0000045876-26-000272","document":"wk-form4_1780414989.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/45876/000004587626000272/wk-form4_1780414989.xml","form_type":"4"}},{"id":756534,"issuer":{"id":42674,"kind":"organization","name":"ENVIRI Corp","symbol":"NVRI"},"owners":[{"id":42675,"kind":"person","name":"Kozak Jennifer Ott","position":1,"cik":"0001949030","reported_name":"Kozak Jennifer Ott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior Vice President & CHRO"}}],"security":"Stock Appreciation Rights","published_at":"2026-06-02T15:43:12.000Z","date":"2026-06-01","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":35252,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled."}],"balance_after":0,"derivative":{"exercise_price":8.2,"expiration_date":"2034-03-11","underlying":"Common Stock","underlying_shares":35252},"source":{"system":"sec-edgar","filing":"0000045876-26-000272","document":"wk-form4_1780414989.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/45876/000004587626000272/wk-form4_1780414989.xml","form_type":"4"}},{"id":756533,"issuer":{"id":42674,"kind":"organization","name":"ENVIRI Corp","symbol":"NVRI"},"owners":[{"id":42675,"kind":"person","name":"Kozak Jennifer Ott","position":1,"cik":"0001949030","reported_name":"Kozak Jennifer Ott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior Vice President & CHRO"}}],"security":"Stock Appreciation Rights","published_at":"2026-06-02T15:43:12.000Z","date":"2026-06-01","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":48776,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Represents the cancellation of all of the stock appreciation rights (SARs) in respect of Issuers common stock held by the reporting period immediately prior to June 1, 2026 in connection with the Transactions. In exchange for the cancellation of the SARs, the reporting person will be granted replacement stock appreciation rights in respect of New Enviri Common Stock with an intrinsic value equal to the intrinsic value of the SARs being cancelled."}],"balance_after":0,"derivative":{"exercise_price":6.03,"expiration_date":"2035-03-04","underlying":"Common Stock","underlying_shares":48776},"source":{"system":"sec-edgar","filing":"0000045876-26-000272","document":"wk-form4_1780414989.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/45876/000004587626000272/wk-form4_1780414989.xml","form_type":"4"}},{"id":756532,"issuer":{"id":42674,"kind":"organization","name":"ENVIRI Corp","symbol":"NVRI"},"owners":[{"id":42675,"kind":"person","name":"Kozak Jennifer Ott","position":1,"cik":"0001949030","reported_name":"Kozak Jennifer Ott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior Vice President & CHRO"}}],"security":"Common Stock","published_at":"2026-06-02T15:43:12.000Z","date":"2026-06-01","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":101019,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The Issuer is party to (x) that certain Agreement and Plan of Merger, dated as of November 20, 2025 (the \"Merger Agreement\"), by and among the Issuer, CLEH, Inc. (CLEH), Enviri LLC (Enviri LLC), Veolia Environment S.A. (Buyer) and Liberty Merger Sub Inc. (Merger Sub), and (y) that certain Separation Agreement, dated as of November 20, 2025 (the Separation Agreement), by and among the Company, CLEH, Buyer and Enviri II Corporation (New Enviri)."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On June 1, 2026, pursuant to the terms of the Merger Agreement and the Separation Agreement, a series of transactions occurred, including: (i) the Issuer merged with and into Enviri LLC, with Enviri LLC being the surviving entity of such merger, and each outstanding share of common stock of the Issuer was exchanged for one share of common stock, par value $1.25 per share, of CLEH (the Holding Company Merger), and (ii) following the Holding Company Merger, CLEH and its subsidiaries, including Enviri LLC and New Enviri, effected a reorganization (the Reorganization), resulting in (x) CLEH holding the Clean Earth segment of the Issuer and all the outstanding shares of common stock, par value $0.00001 per share, of New Enviri (New Enviri Common Stock), (y) New Enviri owning all of the equity interests of Enviri LLC and (z) Enviri LLC holding the Harsco Environmental and Rail segments of the Issuer"},{"field":"kind","element":"transactionCoding","label":"F3","text":"Also on June 1, 2026, (i) following the Reorganization, CLEH distributed all of the outstanding shares of New Enviri common stock to the stockholders of CLEH (the former stockholders of the Issuer) on a pro rata basis (the Distribution); and (ii) immediately after the Distribution, Merger Sub, a wholly owned subsidiary of Buyer, merged with and into CLEH, with CLEH surviving as an indirect wholly owned subsidiary of Buyer (the Merger)."},{"field":"kind","element":"transactionCoding","label":"F4","text":"In connection with the Holding Company Merger, Reorganization and Merger (collectively, the Transactions), the reporting person disposed of all of the shares of the Issuer held by the reporting person immediately prior to the effective time of the Holding Company Merger and, ultimately, received (x) in the Distribution, one share of New Enviri common stock in respect of every three shares of the Issuer previously held, and (y) in the Merger, cash consideration of $15.00 per share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Issuer is party to (x) that certain Agreement and Plan of Merger, dated as of November 20, 2025 (the \"Merger Agreement\"), by and among the Issuer, CLEH, Inc. (CLEH), Enviri LLC (Enviri LLC), Veolia Environment S.A. (Buyer) and Liberty Merger Sub Inc. (Merger Sub), and (y) that certain Separation Agreement, dated as of November 20, 2025 (the Separation Agreement), by and among the Company, CLEH, Buyer and Enviri II Corporation (New Enviri)."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"On June 1, 2026, pursuant to the terms of the Merger Agreement and the Separation Agreement, a series of transactions occurred, including: (i) the Issuer merged with and into Enviri LLC, with Enviri LLC being the surviving entity of such merger, and each outstanding share of common stock of the Issuer was exchanged for one share of common stock, par value $1.25 per share, of CLEH (the Holding Company Merger), and (ii) following the Holding Company Merger, CLEH and its subsidiaries, including Enviri LLC and New Enviri, effected a reorganization (the Reorganization), resulting in (x) CLEH holding the Clean Earth segment of the Issuer and all the outstanding shares of common stock, par value $0.00001 per share, of New Enviri (New Enviri Common Stock), (y) New Enviri owning all of the equity interests of Enviri LLC and (z) Enviri LLC holding the Harsco Environmental and Rail segments of the Issuer"},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Also on June 1, 2026, (i) following the Reorganization, CLEH distributed all of the outstanding shares of New Enviri common stock to the stockholders of CLEH (the former stockholders of the Issuer) on a pro rata basis (the Distribution); and (ii) immediately after the Distribution, Merger Sub, a wholly owned subsidiary of Buyer, merged with and into CLEH, with CLEH surviving as an indirect wholly owned subsidiary of Buyer (the Merger)."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"In connection with the Holding Company Merger, Reorganization and Merger (collectively, the Transactions), the reporting person disposed of all of the shares of the Issuer held by the reporting person immediately prior to the effective time of the Holding Company Merger and, ultimately, received (x) in the Distribution, one share of New Enviri common stock in respect of every three shares of the Issuer previously held, and (y) in the Merger, cash consideration of $15.00 per share."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000045876-26-000272","document":"wk-form4_1780414989.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/45876/000004587626000272/wk-form4_1780414989.xml","form_type":"4"}},{"id":767178,"issuer":{"id":42674,"kind":"organization","name":"ENVIRI Corp","symbol":"NVRI"},"owners":[{"id":42675,"kind":"person","name":"Kozak Jennifer Ott","position":1,"cik":"0001949030","reported_name":"Kozak Jennifer Ott","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior Vice President & CHRO"}}],"security":"Restricted Stock Units","published_at":"2026-05-22T19:58:26.000Z","date":"2026-05-20","kind":"exercise","planned":false,"acquired":false,"shares":27554,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Restricted stock units granted under the 2013 Equity and Incentive Compensation Plan represent a contingent right to receive Enviri common stock on a one-for-one basis when the restricted stock units vest. The restricted stock units have been vested and settled, as approved on May 18, 2026 by the Enviri Board of Directors in connection with Enviri's sale of its Clean Earth division."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Restricted stock units granted under the 2013 Equity and Incentive Compensation Plan represent a contingent right to receive Enviri common stock on a one-for-one basis when the restricted stock units vest. The restricted stock units have been vested and settled, as approved on May 18, 2026 by the Enviri Board of Directors in connection with Enviri's sale of its Clean Earth division."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Restricted stock units granted under the 2013 Equity and Incentive Compensation Plan represent a contingent right to receive Enviri common stock on a one-for-one basis when the restricted stock units vest. 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The restricted stock units vest in one-third increments on each of the first three anniversaries of the date of the grant."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Restricted stock units granted under the 2013 Equity and Incentive Compensation Plan represent a contingent right to receive Enviri common stock on a one-for-one basis when the restricted stock units vest. The restricted stock units vest in one-third increments on each of the first three anniversaries of the date of the grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Restricted stock units granted under the 2013 Equity and Incentive Compensation Plan represent a contingent right to receive Enviri common stock on a one-for-one basis when the restricted stock units vest. 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