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The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Of the 30,731 shares reported, 16,405 are restricted stock units (including dividend equivalent rights)."}],"balance_after":30731,"source":{"system":"sec-edgar","filing":"0000899243-22-014840","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1710366/000089924322014840/doc4.xml","form_type":"4"}},{"id":2391222,"issuer":{"id":3899,"kind":"organization","name":"Core Natural Resources, Inc."},"owners":[{"id":65126,"kind":"person","name":"Salvatori Kurt R.","position":1,"cik":"0001717472","reported_name":"Salvatori Kurt R.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Administrative Officer"}}],"security":"Common stock, par value $0.01 per share","published_at":"2022-02-16T11:10:22.000Z","date":"2022-02-11","kind":"tax_withholding","acquired":false,"shares":2263,"price":31.49,"value":71261.87,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of common stock withheld to satisfy the Reporting Person's tax liability from the vesting of restricted stock units previously granted to him."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Of the 37,726 shares reported, 16,405 are restricted stock units (including dividend equivalent rights)."}],"balance_after":37726,"source":{"system":"sec-edgar","filing":"0000899243-22-006580","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1710366/000089924322006580/doc4.xml","form_type":"4"}},{"id":2405824,"issuer":{"id":3899,"kind":"organization","name":"Core Natural Resources, Inc."},"owners":[{"id":65126,"kind":"person","name":"Salvatori Kurt R.","position":1,"cik":"0001717472","reported_name":"Salvatori Kurt R.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Administrative Officer"}}],"security":"Common stock, par value $0.01 per share","published_at":"2022-02-09T22:18:03.000Z","date":"2022-02-08","kind":"grant","acquired":true,"shares":8442,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents a grant of restricted stock units pursuant to the Issuer's Omnibus Performance Incentive Plan, which vest annually in equal installments over a period of three years, beginning on the first anniversary of the grant date. 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Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Of the 8,415 shares reported, 4,931 are restricted stock units (including dividend equivalent rights)."}],"balance_after":8415,"source":{"system":"sec-edgar","filing":"0000899243-18-003285","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1710366/000089924318003285/doc4.xml","form_type":"4"}},{"id":4081467,"issuer":{"id":3899,"kind":"organization","name":"Core Natural Resources, Inc."},"owners":[{"id":65126,"kind":"person","name":"Salvatori Kurt R.","position":1,"cik":"0001717472","reported_name":"Salvatori Kurt R.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Administrative Officer"}}],"security":"Common stock, par value 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rights)."}],"balance_after":6837,"source":{"system":"sec-edgar","filing":"0000899243-18-002524","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1710366/000089924318002524/doc4.xml","form_type":"4"}},{"id":4081466,"issuer":{"id":3899,"kind":"organization","name":"Core Natural Resources, Inc."},"owners":[{"id":65126,"kind":"person","name":"Salvatori Kurt R.","position":1,"cik":"0001717472","reported_name":"Salvatori Kurt R.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Administrative Officer"}}],"security":"Common stock, par value $0.01 per share","published_at":"2018-02-02T00:01:07.000Z","date":"2018-01-30","kind":"grant","acquired":true,"shares":2742,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of common stock from the vesting and settlement of performance share units previously granted to the reporting person under (a) the Long Term Incentive Program for the 2015-2017 performance period (1,248 shares), and (b) the 2016 Long Term Incentive Program for the 2017 performance period (1,494 shares)."}],"balance_after":7618,"source":{"system":"sec-edgar","filing":"0000899243-18-002524","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1710366/000089924318002524/doc4.xml","form_type":"4"}},{"id":4122164,"issuer":{"id":3899,"kind":"organization","name":"Core Natural Resources, Inc."},"owners":[{"id":65126,"kind":"person","name":"Salvatori Kurt R.","position":1,"cik":"0001717472","reported_name":"Salvatori Kurt R.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Administrative Officer"}}],"security":"Common stock, par value $0.01 per share","published_at":"2017-12-22T21:34:52.000Z","date":"2017-12-20","kind":"tax_withholding","acquired":false,"shares":132,"price":32.5,"value":4290.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of common stock withheld to satisfy the Reporting Person's tax liability from the vesting of restricted stock units previously issued to him as a result of the conversion of the restricted stock units held by the Reporting Person immediately before the legal and structural separation of the Issuer from CNX Resources Corporation (f/k/a CONSOL Energy Inc.)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Of the 4,876 shares reported, 3,353 are restricted stock units (including dividend equivalent rights)."}],"balance_after":4876,"source":{"system":"sec-edgar","filing":"0000899243-17-029471","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1710366/000089924317029471/doc4.xml","form_type":"4"}},{"id":4131230,"issuer":{"id":3899,"kind":"organization","name":"Core Natural Resources, Inc."},"owners":[{"id":65126,"kind":"person","name":"Salvatori Kurt R.","position":1,"cik":"0001717472","reported_name":"Salvatori Kurt R.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Administrative Officer"}}],"security":"Common stock, par value $0.01 per share","published_at":"2017-12-15T01:24:05.000Z","date":"2017-12-12","kind":"grant","acquired":true,"shares":3353,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a grant of 3,353 restricted stock units pursuant to the Issuer's Omnibus Performance Incentive Plan, which will vest annually in equal installments over a period of three years beginning on the first anniversary of the grant date.   Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Of the 5,008 shares reported, 3,353 are restricted stock units (including dividend equivalent rights)."}],"balance_after":5008,"source":{"system":"sec-edgar","filing":"0000899243-17-028761","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1710366/000089924317028761/doc4.xml","form_type":"4"}},{"id":4131239,"issuer":{"id":3899,"kind":"organization","name":"Core Natural Resources, Inc."},"owners":[{"id":65126,"kind":"person","name":"Salvatori Kurt R.","position":1,"cik":"0001717472","reported_name":"Salvatori Kurt R.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Administrative Officer"}}],"security":"Common stock, par value $0.01 per share","published_at":"2017-12-14T23:22:40.000Z","date":"2017-11-28","kind":"grant","acquired":true,"shares":418,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock units issued in accordance with the Employee Matters Agreement dated as of November 28, 2017 between the Issuer and CNX Resources Corporation (f/k/a CONSOL Energy Inc.) (\"CNX\") as a result of the conversion of the restricted stock units held by the Reporting Person immediately before the legal and structural separation of the Issuer from CNX (the \"Spin-Off\").  These restricted stock units vested on November 28, 2017 in connection with a \"change in control\" as defined in, and pursuant to the terms of, the Reporting Person's Amended and Restated Change in Control Severance Agreement dated February 7, 2017."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes shares of Issuer common stock received in connection with the Spin-Off in an exempt transaction pursuant to Rule 16a-9 of the Securities Exchange Act of 1934, as amended."}],"balance_after":1655,"source":{"system":"sec-edgar","filing":"0000899243-17-028720","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1710366/000089924317028720/doc4.xml","form_type":"4"}}]}