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The remainder of the shares vest on the last day of the Issuer's fourth  quarter in fiscal 2026 provided the recipient continues to serve as a director of the Issuer."}],"balance_after":128,"derivative":{"exercise_price":0,"expiration_date":"2027-01-31","underlying":"Common Stock","underlying_shares":128},"source":{"system":"sec-edgar","filing":"0001922048-26-000012","document":"wk-form4_1791205340.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1922048/000192204826000012/wk-form4_1791205340.xml","form_type":"4"}},{"id":4629240,"issuer":{"id":4135,"kind":"organization","name":"KADANT INC","symbol":"KAI"},"owners":[{"id":32392,"kind":"person","name":"O'Mara Rebecca Martinez","position":1,"cik":"0001922048","reported_name":"O'Mara Rebecca Martinez","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-10-05T13:02:23.000Z","date":"2026-10-03","kind":"exercise","planned":false,"acquired":true,"shares":128,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents partial vesting of a restricted stock unit award on October 3,  2026 and delivery of shares of the reporting person pursuant to the terms of a restricted stock unit award agreement dated March  11, 2026. The remainder of the shares vest on the last day of the Issuer's fourth  quarter in fiscal 2026 provided the recipient continues to serve as a director of the Issuer."}],"balance_after":1657,"source":{"system":"sec-edgar","filing":"0001922048-26-000012","document":"wk-form4_1791205340.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1922048/000192204826000012/wk-form4_1791205340.xml","form_type":"4"}},{"id":716408,"issuer":{"id":4135,"kind":"organization","name":"KADANT INC","symbol":"KAI"},"owners":[{"id":32392,"kind":"person","name":"O'Mara Rebecca Martinez","position":1,"cik":"0001922048","reported_name":"O'Mara Rebecca Martinez","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Unit","published_at":"2026-07-06T12:47:06.000Z","date":"2026-07-04","kind":"exercise","planned":false,"acquired":false,"shares":128,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents partial vesting of a restricted stock unit award on July 4, 2026 and delivery of shares of the reporting person pursuant to the terms of a restricted stock unit award agreement dated March  11, 2026. The remainder of the shares vest in equal installments on the last day of each of the Issuer's fiscal quarters in 2026 provided the recipient continues to serve as a director of the Issuer."}],"balance_after":256,"derivative":{"exercise_price":0,"expiration_date":"2027-01-31","underlying":"Common Stock","underlying_shares":128},"source":{"system":"sec-edgar","filing":"0001922048-26-000009","document":"wk-form4_1783342023.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/886346/000192204826000009/wk-form4_1783342023.xml","form_type":"4"}},{"id":716407,"issuer":{"id":4135,"kind":"organization","name":"KADANT INC","symbol":"KAI"},"owners":[{"id":32392,"kind":"person","name":"O'Mara Rebecca Martinez","position":1,"cik":"0001922048","reported_name":"O'Mara Rebecca Martinez","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-07-06T12:47:06.000Z","date":"2026-07-04","kind":"exercise","planned":false,"acquired":true,"shares":128,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents partial vesting of a restricted stock unit award on July 4, 2026 and delivery of shares of the reporting person pursuant to the terms of a restricted stock unit award agreement dated March  11, 2026. The remainder of the shares vest in equal installments on the last day of each of the Issuer's fiscal quarters in 2026 provided the recipient continues to serve as a director of the Issuer."}],"balance_after":1529,"source":{"system":"sec-edgar","filing":"0001922048-26-000009","document":"wk-form4_1783342023.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/886346/000192204826000009/wk-form4_1783342023.xml","form_type":"4"}},{"id":734424,"issuer":{"id":5306,"kind":"organization","name":"Enviri Corp"},"owners":[{"id":32392,"kind":"person","name":"O'Mara Rebecca Martinez","position":1,"cik":"0001922048","reported_name":"O'Mara Rebecca Martinez","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-17T20:30:16.000Z","date":"2026-06-15","kind":"grant","planned":false,"acquired":true,"shares":6250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Restricted stock units granted under the Issuer's 2026 Omnibus Incentive Plan represent a contingent right to receive the Issuer's common stock on a one-for-one basis when the restricted stock units vest. Each reported restricted stock unit vests on the anniversary of the grant date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 15,969 shares acquired in a pro rata distribution by CLEH, Inc. on June 1, 2026 of all of the outstanding shares of the Issuer's common stock to the stockholders of CLEH, Inc."}],"balance_after":22219,"source":{"system":"sec-edgar","filing":"0002104052-26-000098","document":"wk-form4_1781728203.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1922048/000210405226000098/wk-form4_1781728203.xml","form_type":"4"}},{"id":756550,"issuer":{"id":42674,"kind":"organization","name":"ENVIRI Corp","symbol":"NVRI"},"owners":[{"id":32392,"kind":"person","name":"O'Mara Rebecca Martinez","position":1,"cik":"0001922048","reported_name":"O'Mara Rebecca Martinez","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-02T21:49:56.000Z","date":"2026-06-01","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":47909,"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\nLLC), 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\namong 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\nEnviri 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\nHolding 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\nin (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\nowning 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\nIssuer) 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\nindirect 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\nperson 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\nthe 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\nLLC), 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\namong 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\nEnviri 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\nHolding 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\nin (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\nowning 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\nIssuer) 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\nindirect 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\nperson 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\nthe Issuer previously held, and (y) in the Merger, cash consideration of $15.00 per share."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000045876-26-000286","document":"wk-form4_1780436993.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/45876/000004587626000286/wk-form4_1780436993.xml","form_type":"4"}},{"id":770941,"issuer":{"id":42674,"kind":"organization","name":"ENVIRI Corp","symbol":"NVRI"},"owners":[{"id":32392,"kind":"person","name":"O'Mara Rebecca Martinez","position":1,"cik":"0001922048","reported_name":"O'Mara Rebecca Martinez","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Phantom Stock Units","published_at":"2026-05-20T17:43:15.000Z","date":"2026-05-18","kind":"exercise","planned":false,"acquired":false,"shares":18309,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents the settlement of deferred compensation, held in the form of phantom stock units, in connection with Enviri's sale of its Clean Earth division. Each phantom stock unit settled in one share of Enviri common stock on May 18, 2026."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents the settlement of deferred compensation, held in the form of phantom stock units, in connection with Enviri's sale of its Clean Earth division. Each phantom stock unit settled in one share of Enviri common stock on May 18, 2026."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents the settlement of deferred compensation, held in the form of phantom stock units, in connection with Enviri's sale of its Clean Earth division. Each phantom stock unit settled in one share of Enviri common stock on May 18, 2026."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":18309},"source":{"system":"sec-edgar","filing":"0000045876-26-000125","document":"wk-form4_1779298993.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/45876/000004587626000125/wk-form4_1779298993.xml","form_type":"4"}},{"id":770940,"issuer":{"id":42674,"kind":"organization","name":"ENVIRI Corp","symbol":"NVRI"},"owners":[{"id":32392,"kind":"person","name":"O'Mara Rebecca Martinez","position":1,"cik":"0001922048","reported_name":"O'Mara Rebecca Martinez","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-20T17:43:15.000Z","date":"2026-05-18","kind":"exercise","planned":false,"acquired":true,"shares":18309,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":47909,"source":{"system":"sec-edgar","filing":"0000045876-26-000125","document":"wk-form4_1779298993.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/45876/000004587626000125/wk-form4_1779298993.xml","form_type":"4"}},{"id":784060,"issuer":{"id":42674,"kind":"organization","name":"ENVIRI Corp","symbol":"NVRI"},"owners":[{"id":32392,"kind":"person","name":"O'Mara Rebecca Martinez","position":1,"cik":"0001922048","reported_name":"O'Mara Rebecca Martinez","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Phantom Stock Units","published_at":"2026-05-12T20:04:00.000Z","date":"2026-05-07","kind":"grant","planned":false,"acquired":true,"shares":18309,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents deferral of vested restricted stock units as deferred compensation under the 2016 Non-Employee Directors' Long-Term Equity Compensation Plan. 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Each phantom stock unit will be settled in one share of Enviri Common Stock within 30 days before the closing of Enviri's sale of its Clean Earth division."}],"balance_after":18309,"derivative":{"underlying":"Common Stock","underlying_shares":18309},"source":{"system":"sec-edgar","filing":"0000045876-26-000108","document":"wk-form4_1778616235.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/45876/000004587626000108/wk-form4_1778616235.xml","form_type":"4"}},{"id":784059,"issuer":{"id":42674,"kind":"organization","name":"ENVIRI Corp","symbol":"NVRI"},"owners":[{"id":32392,"kind":"person","name":"O'Mara Rebecca Martinez","position":1,"cik":"0001922048","reported_name":"O'Mara Rebecca Martinez","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-05-12T20:04:00.000Z","date":"2026-05-07","kind":"exercise","planned":false,"acquired":false,"shares":18309,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents restricted stock units granted under the 2016 Non-Employee Directors' Long-Term Equity Compensation Plan. Each restricted stock unit vested at the close of business on the first anniversary of the May 7, 2025 grant date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Represents restricted stock units granted under the 2016 Non-Employee Directors' Long-Term Equity Compensation Plan. Each restricted stock unit vested at the close of business on the first anniversary of the May 7, 2025 grant date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Represents restricted stock units granted under the 2016 Non-Employee Directors' Long-Term Equity Compensation Plan. 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The remainder of the shares vest in equal installments on the last day of each of the Issuer's fiscal quarters in 2026 provided the recipient continues to serve as a director of the Issuer."}],"balance_after":384,"derivative":{"exercise_price":0,"expiration_date":"2027-01-31","underlying":"Common Stock","underlying_shares":129},"source":{"system":"sec-edgar","filing":"0001922048-26-000006","document":"wk-form4_1775478804.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/886346/000192204826000006/wk-form4_1775478804.xml","form_type":"4"}},{"id":814956,"issuer":{"id":4135,"kind":"organization","name":"KADANT INC","symbol":"KAI"},"owners":[{"id":32392,"kind":"person","name":"O'Mara Rebecca Martinez","position":1,"cik":"0001922048","reported_name":"O'Mara Rebecca Martinez","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-04-06T12:33:27.000Z","date":"2026-04-04","kind":"exercise","planned":false,"acquired":true,"shares":129,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents partial vesting of a restricted stock unit award on April 4, 2026 and delivery of shares of the reporting person pursuant to the terms of a restricted stock unit award agreement dated March  11, 2026. 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The actual sales prices range from $267.20 to $267.42 per share.  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