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sellModerate cluster of 3

William Heard sold $4.2M of ATEX

director at Anterix Inc.. 46,400 shares at an average of $90.11, traded Aug 14, 2026, filed Aug 18, 2026.

Warning score
55
Value
$4.2M
46,400 shares
Holdings after
1,670,338
-3% from before
From 52-week low
+409%
low $17.99, close $91.53
From 52-week high
-15%
high $108.21, as of Aug 14, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $4.2M at market
    +25
  • Share of holdings sold
    Sold 2.7% of holdings
    0
  • Cluster
    3 insiders selling within 14 days
    +15

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

ATEXOct 13, 2026 · close 84.87
Since filing Aug 18, 2026: -6.5%SPY +1.6% · excess -8.1%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0002035875-26-000006, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 14, 2026SOpen-market sale
Common Stockindirect: By Heard Capital LLC
-46,400$90.11$4.2M1,670,338Aug 18, 2026

Related signals

Other insiders at Anterix Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
Pro nowfree Oct 20, 2026
ATEXsell10b5-1
Anterix Inc.
Elena Marquez
Chief Financial Officer
$401k
4,981 shares
-30%
55Moderate
ATEXsell 410b5-1
Anterix Inc.
Scott A. Lang
President and CEO
$1.2M
15,000 shares
-36%
75Notable
ATEXsell 4
Anterix Inc.
Scott A. Lang
President and CEO
$1.2M
15,000 shares
-36%
42Moderate
ATEXsell 4
Anterix Inc.
Leslie B Daniels
director
$210k
2,500 shares
-5%
56Moderate
ATEXsell 4
Anterix Inc.
Heather Martin
Chief Marketing Officer
$679k
8,064 shares
-23%
40Moderate
ATEXsell 5
Anterix Inc.
Gena L Ashe
Chief Legal Officer & Corp Sec
$372k
4,357 shares
-46%
58Moderate
ATEXsell 4
Anterix Inc.
Leslie B Daniels
director
$880k
10,100 shares
-18%
55Moderate
ATEXsell 5
Anterix Inc.
Gena L Ashe
Chief Legal Officer & Corp Sec
$372k
4,357 shares
-46%
50Moderate
ATEXsell 5
Anterix Inc.
Christopher Guttman-McCabe
Chief Reg & Comm Officer
$2.2M
23,439 shares
-34%
60Notable
ATEXsell 7
Anterix Inc.
Thomas R. Kuhn
director, other
$1.0M
11,654 shares
-60%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

William Heard sold $4.2M of ATEX | InsiderTell