Anterix Inc. (ATEX)
Nasdaq: ATEX · Telephone Communications (No Radiotelephone) · Woodland Park, NJ · filing with the SEC since 2004
Grade5.8
◀ Past 4.4● Present 6.0▶ Future 6.5
Who owns Anterix Inc.
As filed with the SECHolders of 5% or more
3
Jeffrey A. Altman holds 28.5% of Common Stock, par value $0.0001 per share, as its SCHEDULE 13D/A filed Jul 8, 2026 says.
Directors and officers
14
report now, of 35 people on the record since 2015. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 3 named at left.
Holders of 5% or moreshare of the class, as filed
Jeffrey A. Altman
SCHEDULE 13D/A · filed Jul 8, 2026 · Common Stock, par value $0.0001 per share
T. Rowe Price Investment Management, Inc.
SCHEDULE 13G · filed Jul 8, 2026 · COMMON STOCK
Heard Capital LLC
SCHEDULE 13D/A · filed Mar 5, 2025 · Common Stock, $0.0001 par value per share
The Vanguard Group
SCHEDULE 13G/A · filed Jan 30, 2026 · Common Stock · reported falling below 5%
Blackrock, Inc.
SCHEDULE 13G/A · filed Oct 27, 2026 · Common Stock · reported falling below 5%, from 5.1% in Jul 27, 2026
DG Capital Management, LLC
SCHEDULE 13G/A · filed Nov 12, 2025 · Common Stock, $0.0001 par value · reported falling below 5%, from 5.2% in Aug 14, 2025
What ATEX reports owning in othersstakes of 5% or more, and other ties
2 subsidiaries in 1 country, from the list filed with the 10-K filed Jun 25, 2026.
Insider tradesForm 4
48sales
2purchases
6sales on a scheduled plan
10people selling
$36.2Msold, in dollars
$100,000bought, in dollars
Open-market trades on Form 4 from Oct 13, 2025 to Oct 13, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Oct 13, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window10 of 47 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Guttman-Mccabe Christopher | Chief Reg & Comm Officer | 15 | $19.7M | 0 | 0 | $0 |
| Lang Scott A. | President and CEO | 7 | $5.6M | 1 | 2 | $100,000 |
| Heard William | director | 1 | $4.2M | 0 | 0 | $0 |
| Ashe Gena L | Chief Legal Officer & Corp Sec | 7 | $2.3M | 0 | 0 | $0 |
| Daniels Leslie B | director | 4 | $1.1M | 0 | 0 | $0 |
| Kuhn Thomas R. | director | 5 | $1.0M | 0 | 0 | $0 |
| Marquez Elena | Chief Financial Officer | 6 | $700,000 | 5 | 0 | $0 |
| Martin Heather | Chief Marketing Officer | 1 | $700,000 | 0 | 0 | $0 |
| Yazdi Mahvash | director | 1 | $600,000 | 0 | 0 | $0 |
| Fleischhauer Mark | director | 1 | $300,000 | 0 | 0 | $0 |