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Insider Cluster (2 insiders) ·Filed Sep 11, 2026

ATEX

Anterix Inc.
NEUTRAL
Impact 2/10
Horizondays Processed1mo ago
Insider cluster: 2 insiders, $557K total
Actionable Insight • Neutral

Insider sales are immaterial in size and involve no C-suite executives (CEO/CFO). No bearish signal. Monitor next quarterly filing for any fundamental deterioration, but this cluster alone does not warrant a trading response.

DirectionNeutral
Confidencehigh
Horizondays
Latest settled — T+20d
ATEX ▲ +9.50% at T+20d
NEUTRAL call +9.50% · α vs SPY +6.98% · entry $77.59 → $84.96
Next anchor: T+60d in 6w
Latest observation: T+29 -5.34% FF3 residual α
Entry = T+0 close
Sep 11, 2026
via day close
T+1d
-2.10%
call -2.10% · α -1.64%
$75.96
settled 6w ago
T+5d
+7.77%
call +7.77% · α +5.86%
$83.62
settled 6w ago
T+20d
+9.50%
call +9.50% · α +6.98%
$84.96
settled 18d ago
T+60d
Pending
in 6w

Price Chart

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Executive Summary

Two ATEX insiders (a director and the Chief Legal Officer) sold a total of $557K in open-market sales over a 3-day window. The total is only ~0.03% of the $1.6B market cap, well below the 0.1% materiality threshold. Per academic literature, cluster sales are not informative signals — these are likely routine liquidity or tax-planning sales. The filing is neutral with low impact.

Key Financial Metrics

Direction
selling
Total Value
$557.0K
Insiders
2

Key Facts

  • Director Leslie B. Daniels sold 2,500 shares at $83.83 for $209,575 on 2026-09-10
  • CLO Gena L. Ashe sold 4,064 + 293 shares at $85.44 for $372,262 on 2026-09-08
  • Total insider sales of $557K represent ~0.03% of ATEX's $1.6B market cap
  • No insider purchases were made in the cluster window

Financial Impact

Total insider sales of $557K, representing ~0.03% of market cap — trivial relative to company size

insider_ownership

Risk Factors

  • Insider sales could accelerate if broader sector headwinds emerge
  • No purchases to offset the selling signal

Market Snapshot

Exchange
Nasdaq
Sector
Telephone Communications (No Radiotelephone)
Analyst Consensus
80% bullish (10 analysts)

Investment Themes

Media & Telecom

Documents Analyzed

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

DocumentAccession Number
CLUSTER Data (Synthetic)cluster-ATEX-1789192915470
20 reports for ATEX
Performance horizon
100% Hit rate @ T+20 8 of 8 directional calls Went positive at some point 8 of 8 best @ T+60▲ +168.03%Apr 6, 2026
Filters
Rows
Reports for ATEX — sortable, filterable
TypeNow
Oct 27, 2026
today
SC 13G/A
NEUTRAL ★ 3/10
—awaiting T+20——
Oct 9, 2026
18d ago
144
NEUTRAL ★ 3/10
$84.96awaiting T+20—$85.62 (+0.78%)
Sep 18, 2026
5w ago
8-K
NEUTRAL ★ 3/10
$83.62 $77.87▼ −6.88%▼ −5.97%$85.62 (+2.39%)
Sep 11, 2026
6w ago
Insider Cluster
NEUTRAL ★ 2/10
$77.59 $84.96▲ +9.50%▲ +6.98%$85.62 (+10.35%)
Aug 27, 2026
8w ago
Insider Cluster
NEUTRAL ★ 2/10
$92.33 $81.75▼ −11.46%▼ −11.22%$85.62 (−7.27%)
Aug 26, 2026
8w ago
Insider Cluster
BEARISH ★ 5/10
$94.67 $81.42▲ +14.00%▲ +14.28%$85.62 (+9.56%)
Aug 18, 2026
10w ago
Insider Cluster
BEARISH ★ 5/10
$88.68 $77.42▲ +12.70%▲ +11.86%$85.62 (+3.45%)
Aug 18, 2026
10w ago
Insider Cluster
BEARISH ★ 5/10
$88.68 $77.42▲ +12.70%▲ +11.86%$85.62 (+3.45%)
Aug 14, 2026
10w ago
Insider Cluster
NEUTRAL ★ 3/10
$91.53 $77.59▼ −15.23%▼ −13.24%$85.62 (−6.46%)
Jul 29, 2026
12w ago
Press Release
NEUTRAL ★ 1/10
$93.58awaiting T+20—$85.62 (−8.51%)
Showing 10 of 20

US Market Status

Market Closed — Opens Wed (15h 43m)

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Report published Sep 12, 2026