Insider Cluster (3 insiders) ·Filed Mar 17, 2026

CNR

Core Natural Resources, Inc.
BEARISH
Impact 7/10
Horizondays Processed6mo ago
Insider cluster: 3 insiders, $5.3M total
Actionable Insight ▼ Bearish

Material insider selling—especially by the CEO and top executives—often precedes negative news or reflects reduced confidence in near-term performance. Traders should monitor for upcoming earnings, production updates, or hedging disclosures that may explain the timing.

DirectionBearish
Confidencehigh
Horizondays
Final — all horizons settled through T+60d ⚠ clustered
CNR ▼ -7.60% at T+60d
SHORT call ✓ call won +7.60% · α vs SPY +17.46% · entry $98.78 → $91.27
Entry anchored
Mar 16, 03:59 PM ET
via exchange tick
T+1d
+2.79%
call -2.79% · α -4.19%
$101.54
settled 7mo ago
T+5d
+11.03%
call -11.03% · α -13.69%
$109.68
settled 6mo ago
T+20d
-9.59%
call +9.59% · α +13.89%
$89.31
settled 6mo ago
T+60d
-7.60%
call +7.60% · α +17.46%
$91.27
settled 4mo ago

Price Chart

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Executive Summary

Three corporate insiders at Core Natural Resources, Inc. (CNR) sold shares in the open market over a 3-day period, including CEO James A. Brock selling over 40,000 shares for $4.12 million. The total value of reported sales exceeds $5.27 million, representing a material insider selling cluster.

Key Financial Metrics

Direction
selling
Total Value
$5.3M
Insiders
3

Key Facts

  • CEO James A. Brock sold 40,760 shares for $4,122,874 in open-market transactions.
  • SVP and Chief Legal Officer Rosemary L. Klein sold 10,000 shares for $1,050,000.
  • Chief Accounting Officer John Rothka sold 1,000 shares for $97,660.
  • Total open-market sales: $5,270,534 over 3 days.
  • All transactions were open-market sales (Form 4 code 'S'), not driven by tax events or grants.

Financial Impact

$5.27 million in insider sales over 3 days, representing ~0.1% of CNR's $5.4B market cap

insider ownershipinvestor sentimentpotential dilution risk

Risk Factors

  • Insider selling can signal lack of confidence in future stock performance or valuation concerns.
  • Concentrated selling by top leadership may raise governance or succession questions if it continues.

Market Snapshot

Exchange
NYSE

Investment Themes

Materials & Mining

Documents Analyzed

This report is based on 1 SEC document filed with EDGAR.

DocumentAccession Number
CONTEXT: Insider Cluster Data (3 trades, 7d window)cluster-CNR-1774016883361
14 reports for CNR
Performance horizon

Track record builds as more directional reports settle.

Filters
Rows
Reports for CNR — sortable, filterable
TypeNow
Aug 19, 2026
6w ago
8-K
NEUTRAL ★ 3/10
$93.30 $93.32▲ +0.02%▲ +1.97%$89.60 (−3.97%)
Aug 6, 2026
8w ago
8-K
BULLISH ★ 7/10
$89.98 $97.43▲ +8.28%▲ +7.68%$89.60 (−0.42%)
Jun 4, 2026
17w ago
8-K
NEUTRAL ★ 4/10
$93.44 $80.83▼ −13.50%▼ −15.36%$89.60 (−4.11%)
May 19, 2026
19w ago
8-K
NEUTRAL ★ 3/10
$82.97 $83.57▲ +0.72%▼ −0.02%$89.60 (+7.99%)
May 7, 2026
21w ago
8-K
BULLISH ★ 6/10
$88.56 $96.43▲ +8.89%▲ +5.75%$89.60 (+1.17%)
May 4, 2026
21w ago
8-K
NEUTRAL ★ 2/10
$88.38 $94.57▲ +7.00%▲ +2.05%$89.60 (+1.38%)
May 1, 2026
22w ago
3
NEUTRAL ★ 2/10
$87.02 $93.17▲ +7.07%▲ +1.78%$89.60 (+2.96%)
May 1, 2026
22w ago
3
NEUTRAL ★ 2/10
$87.02 $93.17▲ +7.07%▲ +1.78%$89.60 (+2.96%)
Apr 30, 2026
22w ago
8-K
NEUTRAL ★ 2/10
$86.93 $93.17▲ +7.18%▲ +1.92%$89.60 (+3.07%)
Mar 17, 2026
28w ago
Insider Cluster
NEUTRAL ★ 3/10
$98.78 $89.31▼ −9.59%▼ −13.89%$89.60 (−9.29%)
Showing 10 of 14

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Report published Mar 20, 2026