Brock James A 4

What Happened
James A. Brock, Executive Chair, CEO and director of Core Natural Resources, sold 40,760 shares on March 18, 2026. The transaction generated approximately $4,122,874 at a weighted-average price of $101.15 per share. This was a sale (Form 4 code S) and, per the filing, was made in connection with a long-term estate-planning strategy.

Key Details

• Transaction date: 2026-03-18; Form 4 filed 2026-03-19 (timely filing).
• Transaction type: Open-market/private sale (S).
• Shares sold: 40,760.
• Price: $101.15 weighted average; sale prices ranged $100.62 to $101.57. Reporting person will provide breakdown by individual trade upon request (per footnote).
• Proceeds: $4,122,874 (approx.).
• Shares owned after transaction: 266,975 total reported shares; 44,640 of those are unvested restricted stock units (RSUs).
• Notable footnotes: F1—sale tied to long-term estate planning; F2—weighted-average price and price range disclosure; F3—unvested RSU component of reported holdings.

Context
Sales by executives can be routine (taxes, diversification, estate planning) and do not by themselves indicate a negative view of the company. The filing discloses the estate-planning purpose and provides a price range for multiple trades; the filer offers to supply the per-trade breakdown to the company, other shareholders, or the SEC upon request.