Core Natural Resources, Inc.

CNR·NYSE·$88.17Share Price as of 11/2·$4BMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/06/26 10-QQ1 ended 03/31/2605/07/26 10-K/AFY 202502/27/26 10-KFY 202502/17/26 10-QQ3 ended 09/30/2511/06/25

Disclosures

8-KCurrent report08/19/26 8-KCurrent report08/06/26 8-KCurrent report06/04/26 8-KCurrent report05/19/26 8-KCurrent report05/07/26

Prospectuses and Registrations

424B3Prospectus11/26/24 S-4/ARegistration (business combination, amended)11/18/24 S-4Registration (business combination)10/01/24 S-3ASRAutomatic shelf registration02/11/22 S-8Registration of securities for employees12/31/20

Proxies

DEF 14ADefinitive proxy03/16/26 DEFA14AAdditional proxy materials03/16/26 DEF 14ADefinitive proxy03/17/25 DEFA14AAdditional proxy materials03/17/25 DEF 14ADefinitive proxy04/01/24

Ownership

Form 3Initial insider ownership08/20/26 SC 13G/ABeneficial ownership (amended)08/06/26 SC 13GBeneficial ownership05/12/26 SC 13G/ABeneficial ownership (amended)05/06/26 Form 3Initial insider ownership05/01/26

Other

SDConflict Minerals disclosure09/23/26 SDConflict Minerals disclosure09/17/25 ARSAnnual report to shareholders03/17/25 42542501/03/25 EFFECTRequest for effectiveness11/26/24