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See how Context works →On the price, the facts of the public record■Insider buy□Insider sell●Results filed
With an account, also○dividends▲splits◌next earningswith an account
End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.
Latest on record
The most recent facts, as filed.
Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.
- Aug 19, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
- Aug 6, 2026Quarterly report · 10-QFiled by the company itself.Open the filing ↗
- Aug 6, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
In numbers
What this profile holds, counted.
Closes · 1 year250
SEC filings on record64515 flagged findings
Reported transactions (Form 4)50since Jan 31, 2022 · and 13 other holdings
Corporate events (8-K)30since Jun 11, 2020
What the record says
Description, identity and filings, each with its source.
Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.
Identity
Formerly traded as CEIX.
The 25 most recent filings (of 645)
Every SEC filing, newest first, with what it is. Below, each type with its own explanation.
- Aug 20, 26Form 3 ↗Insider transaction
- Aug 19, 268-K ↗Current report · A senior executive left or was appointed
- Aug 6, 2610-Q ↗Quarterly report
- Aug 6, 268-K ↗Current report · Results · Communication to the market
- Aug 6, 26SCHEDULE 13G/A ↗Passive stake · FMR LLC · 5.7% · event on Jun 30, 26 · amendment
- Jun 4, 268-K ↗Current report · Communication to the market
- May 19, 268-K ↗Current report · Mine safety
- May 12, 26SCHEDULE 13G ↗Passive stake · STATE STREET CORPORATION · 7.8% · event on Mar 31, 26
- May 7, 2610-Q ↗Quarterly report
- May 7, 268-K ↗Current report · Results · Communication to the market
- May 6, 26SCHEDULE 13G/A ↗Passive stake · FMR LLC · 8.0% · event on Mar 31, 26 · amendment
- May 4, 268-K ↗Current report · Mine safety
- May 1, 26Form 4 ↗Insider transaction
- May 1, 26Form 4 ↗Insider transaction
- Apr 30, 268-K ↗Current report · Shareholder vote results · Communication to the market
- Apr 29, 26SCHEDULE 13G ↗Passive stake · Vanguard Portfolio Management · 5.9% · event on Mar 31, 26
- Apr 29, 26SCHEDULE 13G ↗Passive stake · Vanguard Capital Management · 5.1% · event on Mar 31, 26
- Mar 26, 26SCHEDULE 13G/A ↗Passive stake · amendment
- Mar 19, 26Form 144 ↗Notice of proposed sale
645 filings on record, the oldest from Aug 7, 17.
Listing the 25 most recent filings of the 645 on record.
2815
- Aug 19, 26A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Oct 8, 25A senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
- Jul 31, 25Entered a material agreement+3 more in the same filing8-K 1.01 ↗
- Jan 15, 25Entered a material agreement+8 more in the same filing8-K 1.01 ↗
- Dec 6, 24A senior executive left or was appointed8-K 5.02 ↗
- Nov 12, 24A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
- Aug 21, 24Entered a material agreement+3 more in the same filing8-K 1.01 ↗
- Jun 13, 23Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- Mar 24, 23A senior executive left or was appointed8-K 5.02 ↗
- Jan 23, 23A senior executive left or was appointed+3 more in the same filing8-K 5.02 ↗
3 material agreements entered2021 – 2022show all 3hide
- Jul 25, 22Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- Apr 19, 21Entered a material agreement+2 more in the same filing8-K 1.01 ↗
- Mar 31, 21Entered a material agreement+3 more in the same filing8-K 1.01 ↗
- Dec 31, 20A senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
4 older filings not shown · The record reaches back to Nov 15, 17.
Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.
Schedule 13G: short-form filing
The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.
- The Vanguard Group10.9%Sep 30, 25SCHEDULE 13G/A ↗1 earlier filing
- STATE STREET CORPORATION7.8%Mar 31, 26SCHEDULE 13G ↗2 co-filers on this document — the figure is the largest single stake, not their sum. · 2 earlier filings
- Vanguard Portfolio Management5.9%Mar 31, 26SCHEDULE 13G ↗
- FMR LLC5.7%Jun 30, 26SCHEDULE 13G/A ↗2 co-filers on this document — the figure is the largest single stake, not their sum. · 3 earlier filings
- Vanguard Capital Management5.1%Mar 31, 26SCHEDULE 13G ↗
show 2 more holdershide
- DME Advisors GP, L.L.C.4.8%Dec 31, 24SCHEDULE 13G/A ↗4 co-filers on this document — the figure is the largest single stake, not their sum.
- Dimensional Fund Advisors LP4.6%Jun 30, 25SCHEDULE 13G/A ↗1 earlier filing
Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.
- Mar 19, 26Sell$1.1MRosemary L KleinSVP, CLO & Corp. Sec.↗
- Mar 19, 26Sell$553KRosemary L KleinSVP, CLO & Corp. Sec.↗
- Mar 18, 26Sell$4.1MJames A BrockExecutive Chair and CEO↗
- Mar 17, 26Sell$98KJohn RothkaChief Accounting Officer↗
- Mar 10, 26Sell$550KRICHARD A NAVARRE↗
- Mar 10, 26Sell$348KJohn RothkaChief Accounting Officer↗
Stock compensation, tax and giftsshow the 34 other transactionshide
Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.
- Apr 30, 26Compensationamount n/aRonald C Keating↗
- Apr 30, 26Compensationamount n/aEdward L Doheny II↗
- Mar 24, 26Giftamount n/aJames A BrockExecutive Chair and CEO↗
- Mar 24, 26Giftamount n/aJames A BrockExecutive Chair and CEO↗
- Feb 18, 26Tax$43KDeck SloneSVP, Strategy & Public Policy↗
- Feb 18, 26Tax$65KDeck SloneSVP, Strategy & Public Policy↗
- Feb 18, 26Tax$5.9MJames A BrockExecutive Chair and CEO↗
- Feb 18, 26Tax$395KJames A BrockExecutive Chair and CEO↗
- Feb 18, 26Tax$41KKurt R. SalvatoriSVP, Chief Admin. Officer↗
- Feb 18, 26Tax$61KKurt R. SalvatoriSVP, Chief Admin. Officer↗
- Feb 18, 26Tax$28KRobert J. Braithwaite Jr.SVP, Marketing & Sales↗
- Feb 18, 26Tax$41KRobert J. Braithwaite Jr.SVP, Marketing & Sales↗
- Feb 18, 26Tax$63KGeorge John Schuller JRSVP, Chief Operating Officer↗
- Feb 18, 26Tax$95KGeorge John Schuller JRSVP, Chief Operating Officer↗
- Feb 18, 26Tax$44KRosemary L KleinSVP, CLO & Corp. Sec.↗
- Feb 18, 26Tax$66KRosemary L KleinSVP, CLO & Corp. Sec.↗
- Feb 18, 26Tax$72KMiteshkumar ThakkarPresident & CFO↗
- Feb 18, 26Tax$109KMiteshkumar ThakkarPresident & CFO↗
- Feb 18, 26Tax$263KJames A BrockExecutive Chair and CEO↗
- Feb 18, 26Tax$7KJohn RothkaChief Accounting Officer↗
- Feb 17, 26Compensationamount n/aHOLLY K KOEPPEL↗
- Feb 17, 26Compensationamount n/aDeck SloneSVP, Strategy & Public Policy↗
- Feb 17, 26Compensationamount n/aJames A BrockExecutive Chair and CEO↗
- Feb 17, 26Compensationamount n/aJoseph P Platt JR↗
- Feb 17, 26Compensationamount n/aKurt R. SalvatoriSVP, Chief Admin. Officer↗
- Feb 17, 26Compensationamount n/aRobert J. Braithwaite Jr.SVP, Marketing & Sales↗
- Feb 17, 26Compensationamount n/aGeorge John Schuller JRSVP, Chief Operating Officer↗
- Feb 17, 26Compensationamount n/aValli Perera↗
- Feb 17, 26Compensationamount n/aRosemary L KleinSVP, CLO & Corp. Sec.↗
- Feb 17, 26Compensationamount n/aRICHARD A NAVARRE↗
- Feb 17, 26Compensationamount n/aMiteshkumar ThakkarPresident & CFO↗
- Feb 17, 26Compensationamount n/aPATRICK A KRIEGSHAUSER↗
- Feb 17, 26Compensationamount n/aJohn RothkaChief Accounting Officer↗
- Nov 13, 25Giftamount n/aJames A BrockExecutive Chair and CEO↗
The full record holds 192 transactions and goes back to Jan 31, 22.
Its sector and its market
Core Natural Resources, Inc. among Energy companies
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- 250 clean closes in the period.
- SEC records
- 645 documents on file, from Aug 7, 2017 to Aug 20, 2026.
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- No description available.
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Which SEC documents appear here?
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