MarketPeel
Insider Trading Intelligence
MF

Mark Fleischhauer

ATEX
DIRECTOR · ANTERIX INC. · CIK 0002036507
FILING MIX · LIFETIME75%/25%
BUYS
3
SELLS
1
TOTAL VALUE
$399.1K
COMPANIES
1
ACTIVE SINCE
Dec 2024
HOLDINGS NOW
12,769
AVG SELL PX
$79.83
TRADE KIND
SHOWING 4 / 4
Trades · vs SPY
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Performance · forward returns vs SPY
1 backtested trades · 8 horizons · 1 pending
Forward-return performance of every backtestable P/S trade by Mark Fleischhauer, 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
7d1+0.00%-1.05%-0.38%-0.67%-0.67%
14d1+0.00%-11.06%-3.39%-7.67%-7.67%
30d1+0.00%-11.65%-2.10%-9.55%-9.55%
60d1+0.00%-15.85%-1.13%-14.72%-14.72%
90d1+100.00%+13.66%-3.57%+17.23%+17.23%
180d1+0.00%-22.13%-1.11%-21.01%-21.01%
1y1+0.00%-40.34%+13.75%-54.09%-54.09%
2y1(1 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
ATEX · 12,769 shares · as of Jun 15, 2026
04,0678,13512,20216,26920252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2024
2025
2025
2025
2025
2026
2026
FLOW · 3 buys / 1 sellsCOVERAGE · 7 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
ATEX
ANTERIX INC.
SALE
3,500$79.83$279.4K12,769Jun 15, 2026Jun 16, 2026View →
ATEX
ANTERIX INC.
PURCHASEGRANT
Stock grant
7,76716,269Aug 5, 2025Aug 7, 2025View →
ATEX
ANTERIX INC.
PURCHASEGRANT
Stock grant
5,0028,502Dec 5, 2024Dec 9, 2024View →
ATEX
ANTERIX INC.
PURCHASE
3,500$34.19$119.7K3,500Dec 5, 2024Dec 9, 2024View →
Other insiders · ATEX
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About this filer
CIK 0002036507
ROLE
Director
PRIMARY
ATEX
COMPANIES
1
ACTIVE SINCE
Dec 2024
MARKETPEEL · /INSIDER/0002036507DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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