Form 8-K - Current report:
SEC Accession No. 0001710366-26-000023
Filing Date
2026-04-30
Accepted
2026-04-30 17:06:45
Documents
13
Period of Report
2026-04-30
Items
Item 5.07: Submission of Matters to a Vote of Security Holders
Item 7.01: Regulation FD Disclosure
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq Description Document Type Size
1 8-K cnr-20260430.htm   iXBRL 8-K 41171
2 EX-99.1 cnr8-k04302026xexhibit991.htm EX-99.1 8531
6 GRAPHIC image_0.jpg GRAPHIC 5149
  Complete submission text file 0001710366-26-000023.txt   179465

Data Files

Seq Description Document Type Size
3 XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT cnr-20260430.xsd EX-101.SCH 1818
4 XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT cnr-20260430_lab.xml EX-101.LAB 22548
5 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT cnr-20260430_pre.xml EX-101.PRE 13071
16 EXTRACTED XBRL INSTANCE DOCUMENT cnr-20260430_htm.xml XML 2813
Mailing Address 275 TECHNOLOGY DRIVE SUITE #101 CANONSBURG PA 15317
Business Address 275 TECHNOLOGY DRIVE SUITE #101 CANONSBURG PA 15317 724-416-8300
Core Natural Resources, Inc. (Filer) CIK: 0001710366 (see all company filings)

EIN.: 000000000 | State of Incorp.: DC | Fiscal Year End: 1231
Type: 8-K | Act: 34 | File No.: 001-38147 | Film No.: 26927035
SIC: 1220 Silver Ores
(CF Office: 01 Energy & Transportation)