SEC Form 3 · accession 0001710366-26-000057
Core Natural Resources, Inc. · CNR
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Nathan Joseph Tucker
Officer — SVP & Chief Financial Officer
Period of report
Aug 18, 2026
Accepted (ET)
Aug 20, 2026 · 11:18 am EDT
Rule 10b5-1 plan
unknown — predates the checkbox
Issuer CIK
0001710366
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1 | holding | — | — | — | 1,590 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1Of the 1,590 shares reported, 690 are unvested restricted stock units that will vest in accordance with the terms of the applicable award agreement. Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock.