Comparable stake leader
STATE STREET CORP
SEC ownership of Core Natural Resources, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001710366.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
18 Aug 2026
- Public ticker
- CNR on NYSE
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
STATE STREET CORP
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
STATE STREET CORP
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
18 Aug 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001710366
- Issuer location
- Canonsburg, PA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Core Natural Resources, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
STATE STREET CORP
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
18 Aug 2026
13D/G
13F
3/4/5
Lead comparable stake: 7.8%
13D/G row: STATE STREET CORP
Showing 1-8 of 50 holder rows.
Quick read
STATE STREET CORP leads the comparable SEC ownership view at 7.8%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens STATE STREET CORP's linked filing trail.
Comparable ownership
Top 5
STATE STREET CORP
7.8%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.9%
FMR LLC
5.7%
VANGUARD CAPITAL MANAGEMENT LLC
5.1%
DME Capital Management, LP
4.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| STATE STREET CORP |
13D/G
13F
STATE STREET CORPORATION · Company
|
7.8%
|
$356,765,963
3,977,324 shares
|
+$48,241,288 | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
5.9%
|
$297,438,149
2,986,027 shares
|
$0 | 31 Mar 2026 |
| FMR LLC |
13F
13D/G
Company
|
5.7%
from 13D/G
|
$231,724,745
2,895,835 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.1%
|
$256,166,539
2,571,695 shares
|
$0 | 31 Mar 2026 |
| DME Capital Management, LP |
13F
13D/G
Company · DME Advisors GP, L.L.C.
|
4.8%
from 13D/G
|
$182,701,664
2,283,200 shares
|
— | 30 Jun 2026 |
| DIMENSIONAL FUND ADVISORS LP |
13D/G
13F
Company
|
4.6%
|
$170,578,740
2,445,924 shares
|
$0 | 30 Jun 2025 |
| James A. Brock |
3/4/5
Executive Chair and CEO, Director
|
1%
|
$48,019,431
533,253 shares
|
-$4,122,874 | 24 Mar 2026 |
| Paul A. Lang |
3/4/5
Chief Executive Officer, Director
|
0.67%
|
$22,834,100
341,062 shares
|
— | 09 May 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$7,787,514.
Buys
$0
Insiders: 0
Sells
$7,787,514
Insiders: 5
Net
-$7,787,514
Shares: -79,103
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 79,103
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 66,560 | $0 | $6,721,990 | -$6,721,990 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 12,543 | $0 | $1,065,524 | -$1,065,524 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 23 reporting-owner rows connected to Core Natural Resources, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
23
Largest Forms 3/4/5 holder
James A. Brock
Net 12M change
-$7,787,514
Latest report
18 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| James A. Brock | Executive Chair and CEO, Director | $48,019,431 | -$4,122,874 | -7.9% | Mixed | 24 Mar 2026 |
| Paul A. Lang | Chief Executive Officer, Director | $22,834,100 | Filing P/S | 09 May 2025 | ||
| William P. Powell | Director | $13,423,781 | Mixed | 02 May 2023 | ||
| Ed Roberson | Director | $7,837,384 | Mixed | 03 May 2022 | ||
| Deck Slone | SVP, Strategy & Public Policy | $6,731,193 | Mixed | 17 Feb 2026 | ||
| Rosemary L. Klein | SVP, CLO & Corp. Sec. | $5,937,970 | -$1,603,100 | -21% | Filing P/S | 19 Mar 2026 |
| Miteshkumar Thakkar | President & CFO | $5,910,823 | Mixed | 17 Feb 2026 | ||
| John T. Mills | Director | $5,290,632 | Mixed | 07 May 2024 | ||
| Joseph P. Platt Jr. | Director | $3,897,667 | Mixed | 17 Feb 2026 | ||
| Martha A. Wiegand | General Counsel & Secretary | $3,263,844 | Mixed | 07 Feb 2024 | ||
| Sophie Bergeron | Director | $3,181,141 | Mixed | 10 May 2022 | ||
| George John Schuller Jr. | SVP, Chief Operating Officer | $2,621,195 | Mixed | 17 Feb 2026 | ||
| Patrick A. Kriegshauser | Director | $2,393,624 | -$234,524 | -8.9% | Mixed | 17 Feb 2026 |
| Kurt R. Salvatori | SVP, Chief Admin. Officer | $2,358,060 | Mixed | 17 Feb 2026 | ||
| Richard A. Navarre | Director | $1,653,717 | -$961,200 | -37% | Filing P/S | 10 Mar 2026 |
| Robert J. Braithwaite Jr. | SVP, Marketing & Sales | $1,563,093 | Mixed | 17 Feb 2026 | ||
| Holly K. Koeppel | Director | $1,435,024 | Mixed | 17 Feb 2026 | ||
| Valli Perera | Director | $894,277 | Mixed | 17 Feb 2026 | ||
| Cassandra Chia-Wei Pan | Director | $785,729 | Mixed | 18 Feb 2025 | ||
| John Rothka | Chief Accounting Officer | $506,855 | -$865,816 | -63% | Filing P/S | 17 Mar 2026 |
Recent insider transactions for Core Natural Resources, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Ronald C. Keating | CNR | Common Stock, par value $0.01 per share ("Common Stock") | Award | 1,390 | 1,390 | 30 Apr 2026 | Direct | |||
| Edward L. Doheny II | CNR | Common Stock, par value $0.01 per share ("Common Stock") | Award | 1,390 | 1,390 | 30 Apr 2026 | Direct | |||
| James A. Brock | CNR | Common stock, par value $0.01 per share | Gift | 9.15% | 24,440 | 291,415 | 24 Mar 2026 | Direct | ||
| James A. Brock | CNR | Common stock, par value $0.01 per share | Gift | -100% | -24,440 | 0 | 24 Mar 2026 | By Lee Ann Brock Trust | ||
| Rosemary L. Klein | CNR | Common stock, par value $0.01 per share | Sale | -21.8% | $1,603,100 | $106.87 | -15,000 | 53,679 | 19 Mar 2026 | Direct |
| James A. Brock | CNR | Common stock, par value $0.01 per share | Sale | -29% | $4,122,874 | $101.15 | -40,760 | 100,000 | 18 Mar 2026 | By SLAT-1 |
| John Rothka | CNR | Common stock, par value $0.01 per share | Sale | -16.2% | $97,660 | $97.66 | -1,000 | 5,190 | 17 Mar 2026 | Direct |
| John Rothka | CNR | Common stock, par value $0.01 per share | Sale | -38% | $348,156 | $91.62 | -3,800 | 6,190 | 10 Mar 2026 | Direct |
| Richard A. Navarre | CNR | Common stock, par value $0.01 per share | Sale | -25% | $550,200 | $91.70 | -6,000 | 18,034 | 10 Mar 2026 | Direct |
| John Rothka | CNR | Common stock, par value $0.01 per share | Tax liability | -0.78% | -79 | 9,990 | 18 Feb 2026 | Direct | ||
| James A. Brock | CNR | Common stock, par value $0.01 per share | Tax liability | -1.08% | -2,960 | 271,415 | 18 Feb 2026 | Direct | ||
| James A. Brock | CNR | Common stock, par value $0.01 per share | Gift | 140,760 | 140,760 | 13 Nov 2025 | By SLAT-1 | |||
| James A. Brock | CNR | Common stock, par value $0.01 per share | Gift | -85.2% | -140,760 | 24,440 | 13 Nov 2025 | Lee Ann Brock Trust | ||
| John Rothka | CNR | Common stock, par value $0.01 per share | Sale | -9.7% | $100,000 | $100.00 | -1,000 | 9,307 | 09 Oct 2025 | Direct |
| John Rothka | CNR | Common stock, par value $0.01 per share | Sale | -8.84% | $95,000 | $95.00 | -1,000 | 10,307 | 08 Oct 2025 | Direct |
| John Rothka | CNR | Common stock, par value $0.01 per share | Sale | -18.1% | $225,000 | $90.00 | -2,500 | 11,307 | 03 Oct 2025 | Direct |
| Richard A. Navarre | CNR | Common stock, par value $0.01 per share | Sale | -18.6% | $411,000 | $82.20 | -5,000 | 21,830 | 25 Sep 2025 | Direct |
| Patrick A. Kriegshauser | CNR | Common stock, par value $0.01 per share | Sale | -11.5% | $234,524 | $77.07 | -3,043 | 23,348 | 17 Sep 2025 | Direct |
* marks a reported price that did not pass the local price check.