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Vested shares will be delivered to the reporting person no later than 30 days after each vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"These are time-based restricted stock units that vest in three equal annual installments commencing on June 7, 2025. 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Vested shares will be delivered to the reporting person no later than 30 days after each vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"These time-based restricted stock units vest in three equal annual installments commencing on October 18, 2024. Vested shares will be delivered to the reporting person no later than 30 days after each vesting date."}],"balance_after":697,"derivative":{"underlying":"Common Stock","underlying_shares":697},"source":{"system":"sec-edgar","filing":"0001104659-23-110822","document":"tm2328990-1_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1921260/000110465923110822/tm2328990-1_4seq1.xml","form_type":"4"}},{"id":2200405,"issuer":{"id":125047,"kind":"organization","name":"Neenah Inc","symbol":"NP"},"owners":[{"id":40118,"kind":"person","name":"DeBrock Kimberly Ann","position":1,"cik":"0001921260","reported_name":"DeBrock Kimberly Ann","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Stock Appreciation Rights","published_at":"2022-07-29T16:09:07.000Z","date":"2022-07-06","kind":"disposition_to_issuer","acquired":false,"shares":750,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"Pursuant to the Merger Agreement, on the Effective Date, these Neenah stock appreciation rights automatically converted into Mativ stock appreciation rights with respect to that number of shares of Mativ common stock (rounded down to the nearest whole share) equal to the product of the number of shares of Neenah common stock subject to such Neenah stock appreciation rights immediately prior to the Effective Time and 1.358."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Pursuant to the Merger Agreement, on the Effective Date, these Neenah stock appreciation rights automatically converted into Mativ stock appreciation rights with respect to that numbers of shares of Mativ common stock (rounded down to the nearest whole share) equal to the product of the number of shares of Neenah common stock subject to such stock appreciation rights immediately prior to the Effective Time and 1.358; provided, however, that the exercise price and the number of shares of Mativ common stock will be determined in a manner consistent with the requirements of Section 409A of the Code."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The Stock Appreciation Rights are fully vested."}],"balance_after":0,"derivative":{"expiration_date":"2027-01-29","underlying":"Common Stock","underlying_shares":750},"source":{"system":"sec-edgar","filing":"0001104659-22-084227","document":"tm2221490-4_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1921260/000110465922084227/tm2221490-4_4seq1.xml","form_type":"4"}},{"id":2200404,"issuer":{"id":125047,"kind":"organization","name":"Neenah Inc","symbol":"NP"},"owners":[{"id":40118,"kind":"person","name":"DeBrock Kimberly Ann","position":1,"cik":"0001921260","reported_name":"DeBrock Kimberly Ann","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Performance Share Units","published_at":"2022-07-29T16:09:07.000Z","date":"2022-07-06","kind":"disposition_to_issuer","acquired":false,"shares":1717,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Pursuant to the Merger Agreement, on the Effective Date, these Neenah performance share units automatically converted into Mativ restricted stock unit awards with respect to that number of shares of Mativ common stock (rounded down to the nearest whole share) equal to the product of the number of shares of Neenah common stock subject to such Neenah performance share units immediately prior to the Effective Time and 1.358 and are convertible into shares of Mativ common stock on a one-for-one basis on the applicable vesting dates."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Pursuant to the Merger Agreement, on the Effective Date, these Neenah performance share units automatically converted into Mativ restricted stock unit awards with respect to that number of shares of Mativ common stock (rounded down to the nearest whole share) equal to the product of the number of shares of Neenah common stock subject to such Neenah performance share units immediately prior to the Effective Time and 1.358 and are convertible into shares of Mativ common stock on a one-for-one basis on the applicable vesting dates."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each such Mativ restricted stock unit award is scheduled to cliff vest, subject to continued service, on the last day of the originally scheduled performance period, but subject to earlier payment and vesting in accordance with the applicable Neenah performance share award agreement. Otherwise, each such Mativ restricted stock unit award is subject to the same terms and conditions as applied to the corresponding Neenah performance share award immediately prior to the Effective Time."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The performance share units do not have an expiration date."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":1717},"source":{"system":"sec-edgar","filing":"0001104659-22-084227","document":"tm2221490-4_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1921260/000110465922084227/tm2221490-4_4seq1.xml","form_type":"4"}},{"id":2200403,"issuer":{"id":125047,"kind":"organization","name":"Neenah Inc","symbol":"NP"},"owners":[{"id":40118,"kind":"person","name":"DeBrock Kimberly Ann","position":1,"cik":"0001921260","reported_name":"DeBrock Kimberly Ann","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock","published_at":"2022-07-29T16:09:07.000Z","date":"2022-07-06","kind":"disposition_to_issuer","acquired":false,"shares":984,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"These shares were subject to Neenah restricted stock units, which were assumed by Mativ Holdings, Inc. 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