MarketPeel
Insider Trading Intelligence
RK

Rosemary L. Klein

CNR
SVP, CLO & CORP. SEC. · CORE NATURAL RESOURCES, INC. · CIK 0001310202
FILING MIX · LIFETIME50%/50%
BUYS
4
SELLS
4
TOTAL VALUE
$1.71M
COMPANIES
1
ACTIVE SINCE
Jan 2025
HOLDINGS NOW
58,679
AVG SELL PX
$105.50
TRADE KIND
SHOWING 8 / 8
Trades · vs SPY
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Performance · forward returns vs SPY
2 backtested trades · 8 horizons · 6 pending
Forward-return performance of every backtestable P/S trade by Rosemary L. Klein, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d2+0.00%+1.47%-2.23%+3.69%+3.69%
14d2+100.00%-2.66%-0.60%-2.06%-2.06%
30d2+100.00%-19.73%+7.63%-27.36%-27.36%
60d2+100.00%-22.72%+12.51%-35.22%-35.22%
90d2+100.00%-18.09%+13.72%-31.81%-31.81%
180d2(2 pending)
1y2(2 pending)
2y2(2 pending)
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
CNR · 58,679 shares · as of Mar 19, 2026
017,47834,95552,43369,9102026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2025
2025
2025
2025
2026
FLOW · 4 buys / 4 sellsCOVERAGE · 5 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CNR
CORE NATURAL RESOURCES, INC.
SALE
SVP, CLO & Corp. Sec.
5,000$110.62$553.1K53,679Mar 19, 2026Mar 20, 2026View →
CNR
CORE NATURAL RESOURCES, INC.
SALE
SVP, CLO & Corp. Sec.
10,000$105.00$1.05M58,679Mar 19, 2026Mar 20, 2026View →
CNR
CORE NATURAL RESOURCES, INC.
SALE
SVP, CLO & Corp. Sec.
746$88.96$66.4K68,667Feb 18, 2026Feb 19, 2026View →
CNR
CORE NATURAL RESOURCES, INC.
SALE
SVP, CLO & Corp. Sec.
497$88.96$44.2K69,413Feb 18, 2026Feb 19, 2026View →
CNR
CORE NATURAL RESOURCES, INC.
PURCHASEGRANT
Stock grant
5,06069,910Feb 17, 2026Feb 19, 2026View →
CNR
CORE NATURAL RESOURCES, INC.
PURCHASEGRANT
Stock grant
5,12459,726Feb 18, 2025Feb 20, 2025View →
CNR
CORE NATURAL RESOURCES, INC.
PURCHASEGRANT
Stock grant
5,12464,850Feb 18, 2025Feb 20, 2025View →
CNR
CORE NATURAL RESOURCES, INC.
PURCHASEGRANT
Stock grant
54,60254,602Jan 14, 2025Jan 16, 2025View →
Other insiders · CNR
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About this filer
CIK 0001310202
ROLE
SVP, CLO & Corp. Sec.
PRIMARY
CNR
COMPANIES
1
ACTIVE SINCE
Jan 2025
MARKETPEEL · /INSIDER/0001310202DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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