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ATEX SCHEDULE 13G/A: SEC filing

An institutional holder

Filed with the SEC on · accession 0002012383-26-003753

ATEX filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Oct 27, 2026. An institutional holder filed an amended Schedule 13G regarding its passive ownership stake in Anterix Inc. (ATEX). The stock moved +7.5% by the first close after the filing.

Summary of the filing

An institutional holder filed an amended Schedule 13G regarding its passive ownership stake in Anterix Inc. (ATEX). The filing indicates a change in the holder's previously reported position.

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Key details

IssuerAnterix Inc.

How ATEX stock reacted

Close before

$79.64

Oct 26, 2026

First close after

+7.51%

$85.62

5 trading days

+3.23%

$82.21

Since filing

-7.08%

$74.00

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Frequently asked questions

What did ATEX file with the SEC on Oct 27, 2026?

ATEX filed a SCHEDULE 13G/A (SEC filing). An institutional holder filed an amended Schedule 13G regarding its passive ownership stake in Anterix Inc. (ATEX). The filing indicates a change in the holder's previously reported position.

How do I read a SCHEDULE 13G/A?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G/A (schedule 13g/a): A report the company filed with the SEC (the US market regulator).

How did ATEX stock react to this filing?

ATEX closed at $79.64 before the filing and $85.62 on Oct 27, 2026 (+7.51%). Five trading days later: $82.21 (+3.23%).

Other ATEX SEC filings

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