Core Natural Resources, Inc.
CNR- Exchange
- NYSE
- Industry
- Silver Ores
- SEC CIK
- 0001710366
No open-market purchases or sales by Core Natural Resources, Inc. insiders were filed in the last 90 days; 357 institutions reported holding it in 13F filings for Q2 2026, worth $3.76B in total; Greenlight Capital is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Core Natural Resources, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Core Natural Resources, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Keating Ronald C | Director | 1,390 | May 1, 2026 | 1 |
| Doheny Edward L II | Director | 1,390 | May 1, 2026 | 1 |
| Brock James A | Executive Chair and CEO | 291,415 | Mar 25, 2026 | 4 |
| Klein Rosemary L | SVP, CLO & Corp. Sec. | 53,679 | Mar 20, 2026 | 2 |
| Rothka John | Chief Accounting Officer | 5,190 | Mar 19, 2026 | 5 |
| Navarre Richard A | Director | 18,034 | Mar 11, 2026 | 2 |
| Kriegshauser Patrick A | Director | 24,958 | Feb 24, 2026 | 1 |
| Koeppel Holly K | Director | 14,958 | Feb 24, 2026 | 1 |
| Platt Joseph P JR | Director | 40,648 | Feb 24, 2026 | 1 |
| Perera Valli | Director | 9,317 | Feb 24, 2026 | 1 |
| Slone Deck | SVP, Strategy & Public Policy | 70,207 | Feb 23, 2026 | 1 |
| Schuller George John JR | SVP, Chief Operating Officer | 27,338 | Feb 23, 2026 | 1 |
| Salvatori Kurt R. | SVP, Chief Admin. Officer | 24,585 | Feb 23, 2026 | 1 |
| Thakkar Miteshkumar | President & CFO | 61,657 | Feb 23, 2026 | 1 |
| Braithwaite Robert J. Jr. | SVP, Marketing & Sales | 16,290 | Feb 23, 2026 | 1 |
| Lang Paul A | Chief Executive Officer | 341,062 | May 12, 2025 | 0 |
| Pan Cassandra Chia-Wei | Director | 7,707 | Feb 20, 2025 | 0 |
| Mills John T | Director | 55,950 | May 9, 2024 | 0 |
| Wiegand Martha A | General Counsel & Secretary | 37,906 | Feb 15, 2024 | 0 |
| Powell William P | Director | 130,088 | May 4, 2023 | 0 |
| Bergeron Sophie | Director | 30,828 | May 12, 2022 | 0 |
| Roberson Ed | Director | 75,951 | May 5, 2022 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Apr 14, 2022 (view filing) | Apr 12 | 2 days | Salvatori Kurt R.Chief Administrative Officer | SSaleCommon stock, par value $0.01 per share | −7.00K | $42.04 | −$294.1K | −18.5%30.7K after | |
| May 12, 2022 (view filing) | May 10 | 2 days | Bergeron SophieDirector | SSaleCommon stock, par value $0.01 per share | −12.2K | $48.25 | −$588.6K | −28.4%30.8K after | |
| May 19, 2022 (view filing) | May 17-19 | 2 days | Mills John TDirector | SSaleCommon stock, par value $0.01 per share | −14.2K | $51.22 | −$726.2K | −15.8%75.6K after | 3 lots |
| May 25, 2022 (view filing) | May 23 | 2 days | Platt Joseph P JRDirector | SSaleCommon stock, par value $0.01 per share | −14.2K | $51.45 | −$729.4K | −25.3%41.8K after | 2 lots |
| Aug 19, 2022 (view filing) | Aug 17 | 2 days | Brock James AChief Executive Officer | SSaleCommon stock, par value $0.01 per share | −50.0K | $67.60 | −$3.38M | −9.3%489.3K after | 3 lots |
| Aug 19, 2022 (view filing) | Aug 17 | 2 days | Wiegand Martha AGeneral Counsel & Secretary | SSaleCommon stock, par value $0.01 per share | −7.00K | $67.03 | −$469.2K | −9.1%69.9K after | |
| Aug 19, 2022 (view filing) | Aug 17 | 2 days | Salvatori Kurt R.Chief Administrative Officer | SSaleCommon stock, par value $0.01 per share | −14.3K | $67.21 | −$962.7K | −46.6%16.4K after | 2 lots |
| Aug 19, 2022 (view filing) | Aug 18 | 1 day | Rothka JohnChief Accounting Officer | SSaleCommon stock, par value $0.01 per share | −2.00K | $70.36 | −$140.7K | −11.0%16.2K after | |
| Sep 2, 2022 (view filing) | Sep 1 | 1 day | Wiegand Martha AGeneral Counsel & Secretary | SSaleCommon stock, par value $0.01 per share | −8.50K | $70.86 | −$602.3K | −12.2%61.4K after | 2 lots |
| Sep 7, 2022 (view filing) | Sep 6 | 1 day | Wiegand Martha AGeneral Counsel & Secretary | SSaleCommon stock, par value $0.01 per share | −8.50K | $75.00 | −$637.5K | −13.9%52.9K after | |
| Dec 1, 2022 (view filing) | Nov 29-30 | 2 days | Brock James AChief Executive Officer | SSaleCommon stock, par value $0.01 per share | −15.8K | $75.91 | −$1.20M | −3.2%473.5K after | 2 lots |
| Dec 5, 2022 (view filing) | Dec 1 | 4 days | Brock James AChief Executive Officer | SSaleCommon stock, par value $0.01 per share | −500 | $78.20 | −$39.1K | −0.1%473.0K after | |
| Mar 7, 2023 (view filing) | Mar 3 | 4 days | Rothka JohnChief Accounting Officer | SSaleCommon stock, par value $0.01 per share | −2.00K | $64.34 | −$128.7K | −12.3%14.2K after | |
| Aug 14, 2023 (view filing) | Aug 10 | 4 days | Wiegand Martha AGeneral Counsel & Secretary | SSaleCommon stock, par value $0.01 per share | −10.0K | $80.33 | −$803.3K | −20.5%38.8K after | |
| Aug 14, 2023 (view filing) | Aug 10 | 4 days | Salvatori Kurt R.Chief Administrative Officer | SSaleCommon stock, par value $0.01 per share | −6.10K | $80.24 | −$489.2K | −36.7%10.5K after | |
| Aug 15, 2023 (view filing) | Aug 11 | 4 days | Mills John TDirector | SSaleCommon stock, par value $0.01 per share | −282 | $80.60 | −$22.7K | −0.4%77.6K after | |
| Aug 16, 2023 (view filing) | Aug 14-15 | 2 days | Mills John TDirector | SSaleCommon stock, par value $0.01 per share | −23.4K | $80.60 | −$1.89M | −30.2%54.2K after | 2 lots |
| Sep 19, 2023 (view filing) | Sep 15 | 4 days | Platt Joseph P JRDirector | SSaleCommon stock, par value $0.01 per share | −10.2K | $98.33 | −$1.01M | −23.1%34.0K after | |
| Dec 20, 2023 (view filing) | Dec 18-19 | 2 days | Brock James AChief Executive Officer | SSaleCommon stock, par value $0.01 per share | −6.67K | $99.27 | −$662.0K | −1.2%533.4K after | 5 lots10b5-1 |
| Dec 20, 2023 (view filing) | Dec 18 | 2 days | Wiegand Martha AGeneral Counsel & Secretary | SSaleCommon stock, par value $0.01 per share | −3.33K | $100.00 | −$333.4K | −8.7%35.1K after | 10b5-1 |
| Dec 22, 2023 (view filing) | Dec 20 | 2 days | Brock James AChief Executive Officer | SSaleCommon stock, par value $0.01 per share | −6.67K | $102.55 | −$683.9K | −1.3%526.7K after | 2 lots10b5-1 |
| Mar 8, 2024 (view filing) | Mar 7 | 1 day | Rothka JohnChief Accounting Officer | SSaleCommon stock, par value $0.01 per share | −2.00K | $94.56 | −$189.1K | −13.2%13.1K after | |
| May 24, 2024 (view filing) | May 22-23 | 2 days | Brock James AChief Executive Officer | SSaleCommon stock, par value $0.01 per share | −6.30K | $98.21 | −$618.7K | −1.2%531.2K after | 2 lots |
| Jul 1, 2024 (view filing) | Jun 27-28 | 4 days | Brock James AChief Executive Officer | SSaleCommon stock, par value $0.01 per share | −17.4K | $100.85 | −$1.75M | −3.3%513.8K after | 8 lots10b5-1 |
| Apr 2, 2025 (view filing) | Mar 31 | 2 days | Koeppel Holly KDirector | SSaleCommon stock, par value $0.01 per share | −8.81K | $75.30 | −$663.7K | −39.8%13.3K after | 2 lots |
| May 12, 2025 (view filing) | May 9 | 3 days | Lang Paul AChief Executive Officer | PPurchaseCommon stock, par value $0.01 per share | +7.50K | $66.95 | +$502.1K | +2.2%341.1K after | |
| Sep 18, 2025 (view filing) | Sep 17 | 1 day | Kriegshauser Patrick ADirector | SSaleCommon stock, par value $0.01 per share | −3.04K | $77.07 | −$234.5K | −11.5%23.3K after | |
| Sep 26, 2025 (view filing) | Sep 25 | 1 day | Navarre Richard ADirector | SSaleCommon stock, par value $0.01 per share | −5.00K | $82.20 | −$411.0K | −18.6%21.8K after | |
| Oct 6, 2025 (view filing) | Oct 3 | 3 days | Rothka JohnChief Accounting Officer | SSaleCommon stock, par value $0.01 per share | −2.50K | $90.00 | −$225.0K | −18.1%11.3K after | 10b5-1 |
| Oct 10, 2025 (view filing) | Oct 8-9 | 2 days | Rothka JohnChief Accounting Officer | SSaleCommon stock, par value $0.01 per share | −2.00K | $97.50 | −$195.0K | −17.7%9.31K after | 2 lots10b5-1 |
| Mar 11, 2026 (view filing) | Mar 10 | 1 day | Navarre Richard ADirector | SSaleCommon stock, par value $0.01 per share | −6.00K | $91.70 | −$550.2K | −25.0%18.0K after | |
| Mar 11, 2026 (view filing) | Mar 10 | 1 day | Rothka JohnChief Accounting Officer | SSaleCommon stock, par value $0.01 per share | −3.80K | $91.62 | −$348.2K | −38.0%6.19K after | |
| Mar 19, 2026 (view filing) | Mar 17 | 2 days | Rothka JohnChief Accounting Officer | SSaleCommon stock, par value $0.01 per share | −1.00K | $97.66 | −$97.7K | −16.2%5.19K after | |
| Mar 19, 2026 (view filing) | Mar 18 | 1 day | Brock James AExecutive Chair and CEO | SSaleCommon stock, par value $0.01 per share | −40.8K | $101.15 | −$4.12M | −29.0%100.0K after | |
| Mar 20, 2026 (view filing) | Mar 19 | 1 day | Klein Rosemary LSVP, CLO & Corp. Sec. | SSaleCommon stock, par value $0.01 per share | −15.0K | $106.87 | −$1.60M | −21.8%53.7K after | 2 lots |