ATEX Anterix Inc.

NASDAQ
$77.42

Anterix Inc. (ATEX) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal In line Selling ran in line with ATEX's own trailing one-year pace, with 0% of sale value under a prearranged plan.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 7 sellers in the last 90 days
Insiders buying
1
3 transactions
Insiders selling
10
41 transactions
Purchases
$174.0K
8,260 shares
Sales
$33.4M
399,453 shares
Net activity
-$33.2M
purchases less sales

How much of that selling was preplanned? 0% planned / 100% discretionary

10b5-1 plan sales $0 0 transactions · 0 shares
Discretionary sales $33.4M 41 transactions · 399,453 shares

Largest single sale: $4.2M.

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: December 18, 2025 , by Lang Scott A. .

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
Martin Heather Chief Marketing Officer Sell 8,064 $84.20 $679.0K 26,743 −23.2% of holding
DANIELS LESLIE B Director Sell 2,500 $83.83 $209.6K 43,477 −5.4% of holding
Ashe Gena L 4 fills Chief Legal Officer & Corp Sec Sell 8,714 $85.44 $744.5K 9,238 −48.5% of holding
DANIELS LESLIE B 2 fills Director Sell 4,100 $87.07 $357.0K 47,177 −8% of holding
DANIELS LESLIE B Director Sell 6,000 $87.15 $522.9K 50,077 −10.7% of holding
Guttman-McCabe Christopher 4 fills Chief Reg & Comm Officer Sell 23,439 $92.36 $2.2M 62,943 −27.1% of holding
Kuhn Thomas R. 4 fills Director Sell 10,000 $88.85 $888.5K 23,339 −30% of holding
Heard William Director Sell 46,400 $90.11 $4.2M 1,670,338 −2.7% of holding
Lang Scott A. 4 fills President and CEO Sell 35,057 $90.22 $3.2M 75,727 −31.6% of holding
Kuhn Thomas R. Director Sell 1,654 $79.52 $131.5K 17,731 −8.5% of holding
Lang Scott A. President and CEO Sell 170 $80.25 $13.6K 76,527 −0.2% of holding
Marquez Elena Chief Financial Officer Sell 4,291 $79.50 $341.1K 18,387 −18.9% of holding
YAZDI MAHVASH Director Sell 7,000 $80.00 $560.0K 19,407 −26.5% of holding
Guttman-McCabe Christopher 11 fills Chief Reg & Comm Officer Sell 214,289 $82.05 $17.6M 157,576 −57.6% of holding
Ashe Gena L 2 fills Chief Legal Officer & Corp Sec Sell 17,711 $81.31 $1.4M 13,867 −56.1% of holding
Fleischhauer Mark Director Sell 3,500 $79.83 $279.4K 12,769 −21.5% of holding
Lang Scott A. President and CEO Buy 1,160 $21.61 $25.1K 8,260
Lang Scott A. President and CEO Buy 2,450 $20.41 $50.0K 7,100
Ashe Gena L Chief Legal Officer & Corp Sec Sell 6,564 $21.07 $138.3K 13,366 −32.9% of holding
Lang Scott A. President and CEO Buy 4,650 $21.28 $99.0K 4,650

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.