CNR · NYSE · CIK 0001710366

Core Natural Resources, Inc.

Core Natural Resources, Inc.’s most recent SEC filing in our snapshot is a Form SD filed on Sep 23, 2026. In fiscal 2025 (year ended Dec 31, 2025) it reported revenue of $4.2B and net income of -$153.2M, according to its XBRL data on EDGAR. Its EDGAR record lists 22 Form 4 insider filings from the 12 months before our last refresh.

SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. See all filings on sec.gov.

Revenue, FY2025
$4.2B
Net income, FY2025
-$153.2M
Form 4 filings on record, past 12 months
22

Company overview

Legal name (as filed)
Core Natural Resources, Inc.
Ticker
CNR
SEC Central Index Key (CIK)
0001710366
Industry (SIC)
Silver Ores (code 1220)
Business address
CANONSBURG, PA
State or country of incorporation
DC
Fiscal year ends
December 31
SEC filer category
Large accelerated filer
Position in SEC ticker list
#1420 of the 3,000 companies we track

Five-year financial highlights

Full-year figures from Core Natural Resources, Inc.’s annual reports, as tagged in XBRL and published by the SEC. Amounts are in U.S. dollars; the fiscal year is named for the calendar year in which it ends.

Revenue
$1.3BFY2021$2.1BFY2022$2.6BFY2023$2.2BFY2024$4.2BFY2025
Net income
$34.1MFY2021$467.0MFY2022$655.9MFY2023$286.4MFY2024-$153.2MFY2025
CNR annual results
ItemFY2021
ended Dec 31, 2021		FY2022
ended Dec 31, 2022		FY2023
ended Dec 31, 2023		FY2024
ended Dec 31, 2024		FY2025
ended Dec 31, 2025
Revenue$1.3B$2.1B$2.6B$2.2B$4.2B
Net income$34.1M$467.0M$655.9M$286.4M-$153.2M
Diluted EPS$0.96$13.07$19.79$9.61-$2.98
Total assets$2.6B$2.7B$2.7B$2.9B$6.1B
Cash and equivalents$149.9M$273.1M$199.4M$408.2M$432.2M

XBRL tags used: revenue = Revenues; netIncome = NetIncomeLoss; assets = Assets; eps = EarningsPerShareDiluted; cash = CashAndCashEquivalentsAtCarryingValue. EPS is shown as originally reported for each year and may not be adjusted for later stock splits. A dash means the company did not report that item in a form we could match.

How to read these numbers

Revenue is the money a company brings in from selling its products and services; net income is what is left after all expenses, interest and taxes. Diluted EPS spreads net income across every share that could exist if options and convertible securities were exercised. Total assets and cash are balance-sheet figures measured on the last day of the fiscal year. For the full story — segment results, one-time charges, guidance — read Management’s Discussion and Analysis in the Form 10-K.

Latest key reports

The most recent filing of each major report type, even if it falls outside the 40 newest filings below.

CNR latest annual, quarterly, current and proxy reports
FiledFormWhat it isOriginal
Feb 17, 202610-KAnnual report· period Dec 31, 2025Document · Index
Aug 6, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Aug 19, 20268-KDirector or officer change; Regulation FD disclosure· period Aug 18, 2026Document · Index
Mar 16, 2026DEF 14ADefinitive proxy statement· period Apr 30, 2026Document · Index

Recent SEC filings

The 40 newest documents filed by or about Core Natural Resources, Inc., by form type:

4 ×88-K ×7144 ×54/A ×53 ×3SCHEDULE 13G/A ×3SCHEDULE 13G ×310-Q ×2SD ×1DEFA14A ×1DEF 14A ×110-K/A ×1
CNR recent filings
FiledFormWhat it isOriginal
Sep 23, 2026SDSpecialized disclosure report (conflict minerals)Document · Index
Aug 20, 20263Initial statement of beneficial ownership· period Aug 18, 2026Document · Index
Aug 19, 20268-KDirector or officer change; Regulation FD disclosure· period Aug 18, 2026Document · Index
Aug 6, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Aug 6, 20268-KResults of operations; Regulation FD disclosure· period Aug 6, 2026Document · Index
Aug 6, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Jun 4, 20268-KRegulation FD disclosure· period Jun 4, 2026Document · Index
May 19, 20268-KMine safety· period May 13, 2026Document · Index
May 12, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
May 7, 202610-QQuarterly report· period Mar 31, 2026Document · Index
May 7, 20268-KResults of operations; Regulation FD disclosure· period May 7, 2026Document · Index
May 6, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
May 4, 20268-KMine safety· period Apr 29, 2026Document · Index
May 1, 20264Statement of changes in beneficial ownership (insider trade)· period Apr 30, 2026Document · Index
May 1, 20263Initial statement of beneficial ownership· period Apr 30, 2026Document · Index
May 1, 20263Initial statement of beneficial ownership· period Apr 30, 2026Document · Index
May 1, 20264Statement of changes in beneficial ownership (insider trade)· period Apr 30, 2026Document · Index
Apr 30, 20268-KShareholder vote results; Regulation FD disclosure· period Apr 30, 2026Document · Index
Apr 29, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Apr 29, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Mar 26, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Mar 25, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 24, 2026Document · Index
Mar 20, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 19, 2026Document · Index
Mar 19, 2026144Notice of proposed sale of securitiesDocument · Index
Mar 19, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 18, 2026Document · Index
Mar 19, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 17, 2026Document · Index
Mar 18, 2026144Notice of proposed sale of securitiesDocument · Index
Mar 17, 2026144Notice of proposed sale of securitiesDocument · Index
Mar 16, 2026DEFA14AAdditional proxy soliciting materialsDocument · Index
Mar 16, 2026DEF 14ADefinitive proxy statement· period Apr 30, 2026Document · Index
Mar 11, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 10, 2026Document · Index
Mar 11, 20264Statement of changes in beneficial ownership (insider trade)· period Mar 10, 2026Document · Index
Mar 10, 2026144Notice of proposed sale of securitiesDocument · Index
Mar 10, 2026144Notice of proposed sale of securitiesDocument · Index
Feb 27, 202610-K/AAmended annual report· period Dec 31, 2025Document · Index
Feb 24, 20264/AStatement of changes in beneficial ownership (insider trade)· period Feb 17, 2026Document · Index
Feb 24, 20264/AStatement of changes in beneficial ownership (insider trade)· period Feb 17, 2026Document · Index
Feb 24, 20264/AStatement of changes in beneficial ownership (insider trade)· period Feb 17, 2026Document · Index
Feb 24, 20264/AStatement of changes in beneficial ownership (insider trade)· period Feb 17, 2026Document · Index
Feb 24, 20264/AStatement of changes in beneficial ownership (insider trade)· period Feb 17, 2026Document · Index

Insider filing activity

22 Form 4 filings appear in Core Natural Resources, Inc.’s EDGAR record between Oct 28, 2025 and our last refresh. Most are reports by the company’s own directors, officers and 10% owners, but EDGAR also lists a Form 4 under a company when the company itself is the insider — for example, when it owns more than 10% of another public company. Foreign private issuers’ own insiders generally do not file Form 4. A high count is not by itself a signal: many Form 4s report routine stock awards, tax withholding or sales under pre-arranged Rule 10b5-1 plans. Open each filing to see the transaction code, share count and price. What a Form 4 shows.

Other companies in Silver Ores

All 3 companies in Silver Ores· Companies headquartered in Pennsylvania

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Source

  • U.S. Securities and Exchange Commission, EDGAR submissions for CIK 0001710366 and XBRL company facts. Core Natural Resources, Inc. on EDGAR.
  • Snapshot updated Oct 27, 2026, 11:27 PM EDT. The SEC does not endorse OpenFilings. Company names and tickers are used only to identify the filer; no logos are shown.

Not investment advice. This page summarizes public SEC filings for information only. Figures may contain errors or omissions; confirm everything in the original filing before relying on it.