Core Natural Resources

CNR

NCI Building Systems, Inc. merged with Ply Gem Parent, LLC in November 2018. In April 2019, the newly-formed company announced that it would officially operate as Cornerstone Building Brands, headquartered in Cary, North Carolina. Cornerstone Building Brands is the largest manufacturer of exterior b …

Insider trades and stock quote 2024-2026

All insider trades at Core Natural Resources

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DateTypeInsiderPositionØ-PriceVolume
3/19/2026 SellKlein, Rosemary L. SVP, CLO & Corp. Sec. $107.8 $1,603,100
3/18/2026 SellBrock, James A. Executive Chair and CEO $101.2 $4,122,874
3/17/2026 SellRothka, John Chief Accounting Officer $97.7 $97,660
3/10/2026 SellNavarre, Richard A. Director $91.7 $550,200
3/10/2026 SellRothka, John Chief Accounting Officer $91.6 $348,156
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