MarketPeel
Insider Trading Intelligence
JR

John Rothka

CNR
CHIEF ACCOUNTING OFFICER · CORE NATURAL RESOURCES, INC. · CIK 0001713960
FILING MIX · LIFETIME29%/71%
BUYS
4
SELLS
10
TOTAL VALUE
$997.3K
COMPANIES
1
ACTIVE SINCE
Jan 2025
HOLDINGS NOW
5,190
AVG SELL PX
$93.98
TRADE KIND
SHOWING 14 / 14
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
5 backtested trades · 8 horizons · 12 pending
Forward-return performance of every backtestable P/S trade by John Rothka, 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
7d5+40.00%+3.29%-1.75%+5.03%+9.08%
14d5+40.00%-0.38%-1.60%+1.23%+1.83%
30d5+100.00%-7.54%+1.35%-8.89%-8.50%
60d5+100.00%-13.65%+4.97%-18.62%-17.85%
90d5+80.00%-3.67%+5.38%-9.05%-8.74%
180d5(2 pending)+0.00%+7.62%-1.99%+9.61%+8.60%
1y5(5 pending)
2y5(5 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 · 5,190 shares · as of Mar 17, 2026
03,4946,98810,48113,9752026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2025
2025
2025
2025
2026
FLOW · 4 buys / 10 sellsCOVERAGE · 5 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CNR
CORE NATURAL RESOURCES, INC.
SALE
Chief Accounting Officer
1,000$97.66$97.7K5,190Mar 17, 2026Mar 18, 2026View →
CNR
CORE NATURAL RESOURCES, INC.
SALE
Chief Accounting Officer
3,800$91.62$348.2K6,190Mar 10, 2026Mar 11, 2026View →
CNR
CORE NATURAL RESOURCES, INC.
SALE
Chief Accounting Officer
97$88.96$8.6K9,970Feb 18, 2026Feb 19, 2026View →
CNR
CORE NATURAL RESOURCES, INC.
SALE
Chief Accounting Officer
79$88.96$7.0K9,990Feb 18, 2026Feb 23, 2026View →
CNR
CORE NATURAL RESOURCES, INC.
PURCHASEGRANT
Stock grant
76010,067Feb 17, 2026Feb 19, 2026View →
CNR
CORE NATURAL RESOURCES, INC.
SALE10b5-1
10b5-1 plan
1,000$100.00$100.0K9,307Oct 9, 2025Oct 10, 2025View →
CNR
CORE NATURAL RESOURCES, INC.
SALE10b5-1
10b5-1 plan
1,000$95.00$95.0K10,307Oct 8, 2025Oct 10, 2025View →
CNR
CORE NATURAL RESOURCES, INC.
SALE10b5-1
10b5-1 plan
2,500$90.00$225.0K11,307Oct 3, 2025Oct 6, 2025View →
CNR
CORE NATURAL RESOURCES, INC.
PURCHASEGRANT
Stock grant
82813,807Feb 18, 2025Feb 20, 2025View →
CNR
CORE NATURAL RESOURCES, INC.
PURCHASEGRANT
Stock grant
49213,600Jan 14, 2025Jan 16, 2025View →
CNR
CORE NATURAL RESOURCES, INC.
SALE
Chief Accounting Officer
849$101.95$86.6K12,979Jan 14, 2025Jan 16, 2025View →
CNR
CORE NATURAL RESOURCES, INC.
SALE
Chief Accounting Officer
140$101.95$14.3K13,460Jan 14, 2025Jan 16, 2025View →
CNR
CORE NATURAL RESOURCES, INC.
SALE
Chief Accounting Officer
147$101.95$15.0K13,828Jan 14, 2025Jan 16, 2025View →
CNR
CORE NATURAL RESOURCES, INC.
PURCHASEGRANT
Stock grant
51513,975Jan 14, 2025Jan 16, 2025View →
Other insiders · CNR
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About this filer
CIK 0001713960
ROLE
Chief Accounting Officer
PRIMARY
CNR
COMPANIES
1
ACTIVE SINCE
Jan 2025
MARKETPEEL · /INSIDER/0001713960DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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