United States Coal

Core Natural Resources Inc (CNR)

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The most recent insider trading activity at Core Natural Resources Inc. occurred on March 19, 2026. During March 2026, several executives, including the CEO and Chief Accounting Officer, executed multiple sell transactions and proposed sales of company shares. No insider trading activity has been reported within the last three months.
Ticker: CNR Exchange: NYS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Core Natural Resources Inc. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Sale 19 Mar 2026
Value US$2,019,837.14 | Price 412.46 | Shares 76,901 (+0.9%)
Sale 19 Mar 2026
Value US$1,273,153.54 | Price 196.89 | Shares 7,073 (+17.6%)
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-03-20 2026-03-19 S Sale
3.8
Klein Rosemary L

SVP, CLO & Corp. Sec.

Officer
76,901 +0.9%
412.46
US$2,019,837 		76,901 +0.9% 412.46 US$2,019,837
2026-03-20 2026-03-19 S Sale
3.8
Klein Rosemary L

SVP, CLO & Corp. Sec.

Officer
7,073 +17.6%
196.89
US$1,273,154 		7,073 +17.6% 196.89 US$1,273,154
2026-03-19 2026-03-19 PrS Proposed sale
3.8
THE ROSEMARY L. KLEIN REV TRUST

Officer

Officer
31,018
374.41
US$3,236,448 		31,018 374.41 US$3,236,448
2026-03-19 2026-03-18 S Sale
3.4
Brock James A

Executive Chair and CEO

Executive Director
40,760 -29.0%
101.15
US$4,122,874 		40,760 -29.0% 101.15 US$4,122,874
2026-03-18 2026-03-18 PrS Proposed sale
3.4
James A. Brock

Officer

Officer
40,760
101.54
US$4,138,770 		40,760 101.54 US$4,138,770
2026-03-19 2026-03-17 S Sale
3.3
Rothka John

Chief Accounting Officer

Officer
1,000 -16.2%
97.66
US$97,660 		1,000 -16.2% 97.66 US$97,660
2026-03-17 2026-03-17 PrS Proposed sale
3.3
Rothka John

Officer

Officer
1,000
97.66
US$97,660 		1,000 97.66 US$97,660
2026-03-11 2026-03-10 S Sale
3.3
Rothka John

Chief Accounting Officer

Officer
3,800 -38.0%
91.62
US$348,156 		3,800 -38.0% 91.62 US$348,156
2026-03-11 2026-03-10 S Sale
2.4
NAVARRE RICHARD A
Non-Executive Director
6,000 -25.0%
91.70
US$550,200 		6,000 -25.0% 91.70 US$550,200
2026-03-10 2026-03-10 PrS Proposed sale
2.4
Richard A Navarre

Director

Non-Executive Director
6,000
91.70
US$550,219 		6,000 91.70 US$550,219
2026-03-10 2026-03-10 PrS Proposed sale
3.3
Rothka John

Officer

Officer
3,800
91.76
US$348,688 		3,800 91.76 US$348,688
2025-12-18 2025-12-18 PrS Proposed sale
3.5
Lang Paul A

Former Officer and Director

Executive Director
60,000
89.92
US$5,395,281 		60,000 89.92 US$5,395,281
2025-10-10 2025-10-09 PlS Planned sale
3.3
Rothka John

Chief Accounting Officer

Officer
1,000 -9.7%
100.00
US$100,000 		1,000 -9.7% 100.00 US$100,000
2025-10-09 2025-10-09 PrS Proposed sale
3.3
JOHN ROTHKA

Officer

Officer
1,000
97.71
US$97,710 		1,000 97.71 US$97,710
2025-10-10 2025-10-08 PlS Planned sale
3.3
Rothka John

Chief Accounting Officer

Officer
1,000 -8.8%
95.00
US$95,000 		1,000 -8.8% 95.00 US$95,000
2025-10-08 2025-10-08 PrS Proposed sale
3.3
JOHN ROTHKA

Officer

Officer
1,000
92.70
US$92,700 		1,000 92.70 US$92,700
2025-10-06 2025-10-03 PlS Planned sale
3.3
Rothka John

Chief Accounting Officer

Officer
2,500 -18.1%
90.00
US$225,000 		2,500 -18.1% 90.00 US$225,000
2025-10-03 2025-10-03 PrS Proposed sale
3.3
JOHN ROTHKA

Officer

Officer
2,500
85.80
US$214,500 		2,500 85.80 US$214,500
2025-09-26 2025-09-25 S Sale
2.4
NAVARRE RICHARD A
Non-Executive Director
5,000 -18.6%
82.20
US$411,000 		5,000 -18.6% 82.20 US$411,000
2025-09-25 2025-09-25 PrS Proposed sale
2.4
RICHARD NAVARRE

Director

Non-Executive Director
5,000
82.20
US$410,976 		5,000 82.20 US$410,976
2025-09-18 2025-09-17 S Sale
0.7
KRIEGSHAUSER PATRICK A
Non-Executive Director
3,043 -11.5%
77.07
US$234,524 		3,043 -11.5% 77.07 US$234,524
2025-09-17 2025-09-17 PrS Proposed sale
0.7
PATRICK A. KRIEGSHAUSER

Director

Non-Executive Director
3,043
77.07
US$234,524 		3,043 77.07 US$234,524
2025-05-12 2025-05-09 B Purchase
3.5
Lang Paul A

Chief Executive Officer

Executive Director
7,500 +2.2%
66.95
US$502,125 		7,500 +2.2% 66.95 US$502,125
2025-04-02 2025-03-31 S Sale
3.8
KOEPPEL HOLLY K
Non-Executive Director
4,044 -23.3%
75.68
US$306,050 		4,044 -23.3% 75.68 US$306,050
2025-04-02 2025-03-31 S Sale
3.8
KOEPPEL HOLLY K
Non-Executive Director
4,771 -21.5%
74.97
US$357,682 		4,771 -21.5% 74.97 US$357,682
2025-02-21 2025-02-21 PrS Proposed sale
2.6
MILLS JOHN T

Director

Non-Executive Director
51,603
75.57
US$3,899,638 		51,603 75.57 US$3,899,638
2024-07-01 2024-06-28 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
3,700 -0.7%
102.29
US$378,473 		3,700 -0.7% 102.29 US$378,473
2024-07-01 2024-06-28 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
4,488 -0.9%
101.26
US$454,455 		4,488 -0.9% 101.26 US$454,455
2024-07-01 2024-06-28 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
4,410 -0.8%
100.46
US$443,029 		4,410 -0.8% 100.46 US$443,029
2024-07-01 2024-06-28 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
3,100 -0.6%
99.79
US$309,349 		3,100 -0.6% 99.79 US$309,349
2024-06-28 2024-06-28 PrS Proposed sale
3.4
James A. Brock

Other: CEO
15,698
102.03
US$1,601,667 		15,698 102.03 US$1,601,667
2024-07-01 2024-06-27 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
300 -0.1%
101.83
US$30,549 		300 -0.1% 101.83 US$30,549
2024-07-01 2024-06-27 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
200 -0.0%
100.51
US$20,102 		200 -0.0% 100.51 US$20,102
2024-07-01 2024-06-27 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
400 -0.1%
99.36
US$39,744 		400 -0.1% 99.36 US$39,744
2024-07-01 2024-06-27 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
800 -0.2%
98.56
US$78,848 		800 -0.2% 98.56 US$78,848
2024-06-27 2024-06-27 PrS Proposed sale
3.4
James A. Brock

Other: CEO
1,700
96.37
US$163,829 		1,700 96.37 US$163,829
2024-05-24 2024-05-23 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
900 -0.2%
98.19
US$88,371 		900 -0.2% 98.19 US$88,371
2024-05-23 2024-05-23 PrS Proposed sale
3.4
James A. Brock

Other: CEO
900
95.57
US$86,013 		900 95.57 US$86,013
2024-05-24 2024-05-22 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
5,400 -1.0%
98.21
US$530,334 		5,400 -1.0% 98.21 US$530,334
2024-05-22 2024-05-22 PrS Proposed sale
3.4
James A. Brock

Other: CEO
5,400
97.09
US$524,286 		5,400 97.09 US$524,286
2024-03-08 2024-03-07 S Sale
3.3
Rothka John

Chief Accounting Officer

Officer
2,000 -13.2%
94.56
US$189,120 		2,000 -13.2% 94.56 US$189,120
2024-03-07 2024-03-07 PrS Proposed sale
3.3
JOHN ROTHKA

Officer

Officer
2,000
94.56
US$189,128 		2,000 94.56 US$189,128
2023-12-22 2023-12-20 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
700 -0.1%
103.19
US$72,233 		700 -0.1% 103.19 US$72,233
2023-12-22 2023-12-20 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
5,969 -1.1%
102.48
US$611,703 		5,969 -1.1% 102.48 US$611,703
2023-12-20 2023-12-20 PrS Proposed sale
3.4
James A. Brock

Other: CEO
6,669
98.80
US$658,897 		6,669 98.80 US$658,897
2023-12-20 2023-12-19 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
1,647 -0.3%
100.33
US$165,244 		1,647 -0.3% 100.33 US$165,244
2023-12-20 2023-12-19 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
2,600 -0.5%
99.51
US$258,726 		2,600 -0.5% 99.51 US$258,726
2023-12-20 2023-12-19 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
800 -0.1%
98.30
US$78,640 		800 -0.1% 98.30 US$78,640
2023-12-19 2023-12-19 PrS Proposed sale
3.4
James A. Brock

Other: CEO
5,047
101.16
US$510,555 		5,047 101.16 US$510,555
2023-12-20 2023-12-18 PlS Planned sale
2.4
Wiegand Martha A

General Counsel & Secretary

Officer
3,334 -8.7%
100.00
US$333,400 		3,334 -8.7% 100.00 US$333,400
2023-12-20 2023-12-18 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
105 -0.0%
99.23
US$10,419 		105 -0.0% 99.23 US$10,419
2023-12-20 2023-12-18 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
1,517 -0.3%
98.22
US$149,000 		1,517 -0.3% 98.22 US$149,000
2023-12-18 2023-12-18 PrS Proposed sale
3.4
James A. Brock

Other: CEO
1,622
95.55
US$154,982 		1,622 95.55 US$154,982
2023-12-18 2023-12-18 PrS Proposed sale
2.4
MARTHA A WIEGAND

Officer

Officer
3,334
97.97
US$326,632 		3,334 97.97 US$326,632
2023-09-19 2023-09-15 S Sale
2.5
Platt Joseph P JR
Non-Executive Director
10,227 -23.1%
98.33
US$1,005,621 		10,227 -23.1% 98.33 US$1,005,621
2023-09-15 2023-09-15 PrS Proposed sale
2.5
JOSEPH P PLATT JR.

Director

Non-Executive Director
10,227
98.33
US$1,005,582 		10,227 98.33 US$1,005,582
2023-08-16 2023-08-15 S Sale
2.6
MILLS JOHN T
Non-Executive Director
14,900 -21.6%
80.66
US$1,201,834 		14,900 -21.6% 80.66 US$1,201,834
2023-08-16 2023-08-14 S Sale
2.6
MILLS JOHN T
Non-Executive Director
8,507 -11.0%
80.49
US$684,728 		8,507 -11.0% 80.49 US$684,728
2023-08-15 2023-08-11 S Sale
2.6
MILLS JOHN T
Non-Executive Director
282 -0.4%
80.60
US$22,729 		282 -0.4% 80.60 US$22,729
2023-08-11 2023-08-11 PrS Proposed sale
2.6
MILLS JOHN T

Director

Non-Executive Director
23,689
81.04
US$1,919,757 		23,689 81.04 US$1,919,757
2023-08-14 2023-08-10 S Sale
2.4
Wiegand Martha A

General Counsel & Secretary

Officer
10,000 -20.5%
80.33
US$803,300 		10,000 -20.5% 80.33 US$803,300
2023-08-14 2023-08-10 S Sale
2.0
Salvatori Kurt R.

Chief Administrative Officer

Officer
6,097 -36.7%
80.24
US$489,223 		6,097 -36.7% 80.24 US$489,223
2023-08-10 2023-08-10 PrS Proposed sale
2.0
KURT R SALVATORI

Officer

Officer
6,097
80.24
US$489,249 		6,097 80.24 US$489,249
2023-08-10 2023-08-10 PrS Proposed sale
2.4
MARTHA WIEGAND

Officer

Officer
10,000
80.33
US$803,330 		10,000 80.33 US$803,330
2023-04-26 2023-04-26 PrS Proposed sale
0.6
SOPHIE BERGERON

Officer

Officer
14,000
59.01
US$826,077 		14,000 59.01 US$826,077
2023-03-07 2023-03-03 S Sale
3.3
Rothka John

Chief Accounting Officer

Officer
2,000 -12.3%
64.34
US$128,680 		2,000 -12.3% 64.34 US$128,680
2022-12-05 2022-12-01 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
500 -0.1%
78.20
US$39,100 		500 -0.1% 78.20 US$39,100
2022-12-01 2022-11-30 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
3,314 -0.7%
78.08
US$258,757 		3,314 -0.7% 78.08 US$258,757
2022-12-01 2022-11-29 PlS Planned sale
3.4
Brock James A

Chief Executive Officer

Executive Director
12,500 -2.6%
75.33
US$941,625 		12,500 -2.6% 75.33 US$941,625
2022-09-07 2022-09-06 S Sale
2.4
Wiegand Martha A

General Counsel & Secretary

Officer
8,500 -13.9%
75.00
US$637,500 		8,500 -13.9% 75.00 US$637,500
2022-09-02 2022-09-01 S Sale
2.4
Wiegand Martha A

General Counsel & Secretary

Officer
4,509 -6.8%
71.36
US$321,762 		4,509 -6.8% 71.36 US$321,762
2022-09-02 2022-09-01 S Sale
2.4
Wiegand Martha A

General Counsel & Secretary

Officer
3,991 -5.7%
70.29
US$280,527 		3,991 -5.7% 70.29 US$280,527
2022-08-19 2022-08-18 S Sale
3.3
Rothka John

Chief Accounting Officer

Officer
2,000 -11.0%
70.36
US$140,720 		2,000 -11.0% 70.36 US$140,720
2022-08-19 2022-08-17 S Sale
3.4
Brock James A

Chief Executive Officer

Executive Director
10,617 -2.1%
68.61
US$728,432 		10,617 -2.1% 68.61 US$728,432
2022-08-19 2022-08-17 S Sale
3.4
Brock James A

Chief Executive Officer

Executive Director
18,174 -3.5%
67.71
US$1,230,562 		18,174 -3.5% 67.71 US$1,230,562
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