James A. Brock
Executive Chair and CEO · Core Natural Resources, Inc.
- 2025
- Mar 25, 2026
- 5
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies James A. Brock files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Rosemary L. Klein - $1.60M in CNR purchases and sales in the last 12 months
- Richard A. Navarre - $550K in CNR purchases and sales in the last 12 months
- John Rothka - $446K in CNR purchases and sales in the last 12 months
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Frequently asked questions
Who is James A. Brock?
James A. Brock is a corporate insider, tracked as Executive Chair and CEO of Core Natural Resources, Inc. (CNR). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did James A. Brock last file a Form 4?
The most recent primary Form 4 on record is dated 25 March 2026, one of 5 filings going back to 2025.
Has James A. Brock been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($4.12M) across all tracked filings.
