Elena Marquez - 17 Jun 2026 Form 4 Insider Report for Anterix Inc. (ATEX)

Reporting relationship: Chief Financial Officer
Issuer ticker: ATEX
Reported as of: 17 Jun 2026
Net transaction value: -$341,134
SEC form: 4
Accepted by SEC: 18 Jun 2026, 16:40:36 UTC
Prior SEC filing: 22 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Gena L. Ashe, Attorney-in-Fact

Key filing fact

Elena Marquez filed Form 4 for Anterix Inc. (ATEX) on 18 Jun 2026.

Key facts

This page summarizes Elena Marquez's Form 4 filing for Anterix Inc. (ATEX).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 18 Jun 2026, 16:40.

Change

Previous filing in this sequence was filed on 22 May 2026.
Current net transaction value: -$341,134.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002090789 Primary reporting owner

Marquez Elena

Relationship: Chief Financial Officer
Address: 3 GARRET MOUNTAIN PLAZA, SUITE 401, WOODLAND PARK
Signature: /s/ Gena L. Ashe, Attorney-in-Fact
Signature date: 18 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ATEX transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,226
Change %: +5.7%
Price: $40.00^*
Shares after: 22,678
Date: 17 Jun 2026
Ownership: Direct

ATEX transaction

Common Stock

Sale

Transaction value: $341,134
Shares: -4,291
Change %: -19%
Price: $79.50
Shares after: 18,387
Date: 17 Jun 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ATEX transaction Derivative

Stock Option (Right to Buy)

Options Exercise

Transaction value
Shares: -1,226
Change %: -33%
Price: $0.000000^*
Shares after: 2,454
Date: 17 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,226
Exercise price: $40.00
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The option shares vest and become exercisable in three equal annual installments beginning on October 4, 2025.

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