ATEX insider Form 3 shows 34,578 shares directly owned

Rhea-AI Filing Summary

Anterix Inc. (ATEX) reported an initial statement of beneficial ownership. A company officer filed Form 3 effective 09/17/2025, disclosing 34,578 shares of common stock held directly. The filer is identified as an Officer (Chief Marketing Officer) and Chief of Staff. The filing also notes Restricted Stock Units that will vest in three equal installments beginning on September 9, 2026.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Martin Heather

Role Chief Marketing Officer

Type	Security	Shares	Price	Value
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 34,578 shares (Direct)

Footnotes (1)

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Understanding Insider Trading Forms →

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
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1. Name and Address of Reporting Person^*

Martin Heather

(Last) (First) (Middle)

3 GARRET MOUNTAIN PLAZA, SUITE 401

(Street)

WOODLAND PARK NJ 07424

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
09/17/2025

3. Issuer Name and Ticker or Trading Symbol
Anterix Inc. [ ATEX ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)	X	Other (specify below)
	Chief Marketing Officer		Chief of Staff

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	34,578(1)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The Restricted Stock Units will west in 3 equal installments beginning on September 9, 2026.

Remarks:

	/s/ Gena L. Ashe, Attorney-in-Fact	11/04/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Anterix (ATEX) disclose in this filing?

An officer filed a Form 3, the initial statement of beneficial ownership of securities.

How many Anterix (ATEX) shares were reported as owned?

34,578 shares of common stock were reported as directly owned.

What roles does the reporting person hold at Anterix (ATEX)?

The reporting person is an Officer (Chief Marketing Officer) and Chief of Staff.

What is the event date on the Form 3 for Anterix (ATEX)?

The event date is 09/17/2025.

What does the filing say about RSU vesting at Anterix (ATEX)?

Restricted Stock Units will vest in three equal installments beginning on September 9, 2026.

Is the reported ownership direct or indirect for Anterix (ATEX)?

The shares are reported as Direct (D) ownership.