Anterix Inc.
ATEX- Exchange
- Nasdaq
- Industry
- Telephone Communications (No Radiotelephone)
- SEC CIK
- 0001304492
In the last 90 days, Anterix Inc. insiders filed 0 open-market purchases and 10 sales; 171 institutions reported holding it in 13F filings for Q2 2026, worth $1.97B in total; no superinvestor holds it.
Holders of 5% or more of ATEX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Anterix Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Heard Capital LLC | 13D/A | 9.40%1.74M shares | – | Mar 5, 20251 filing | Mar 5, 2025 | SEC |
| BlackRock, Inc. | 13G/A | 5.10%950.8K shares | – | Oct 17, 20251 filing | Oct 17, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
5 Schedule 13D and 13G filings on Anterix Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jan 30, 20261:30 PM ET | Vanguard Group Inc | 13G/A | 4.97%931.3K shares | –Below 5% | Dec 31, 2025 | SEC |
| Nov 12, 20253:52 PM ET | DG Capital Management, LLCand 1 other | 13G/A | 4.00%744.5K shares | −1.20 ppfrom 5.20%Below 5% | Sep 30, 2025 | SEC |
| Oct 17, 20256:05 PM ET | BlackRock, Inc. | 13G/A | 5.10%950.8K shares | – | Sep 30, 2025 | SEC |
| Aug 14, 202511:57 AM ET | DG Capital Management, LLCand 1 other | 13G | 5.20%975.7K shares | New | Jun 30, 2025 | SEC |
| Mar 5, 20259:19 PM ET | Heard Capital LLCand 3 others | 13D/A | 9.40%1.74M shares | – | Feb 28, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Anterix Inc. shares.
No Form 144 notices for Anterix Inc. are on file.