Anterix Inc. (ATEX) officer transfers 1,516 shares for tax withholding

Rhea-AI Filing Summary

Anterix Inc. Chief Reg & Comm Officer Christopher Guttman-McCabe reported a Form 4 transaction involving a tax-withholding disposition of 1,516 shares of common stock at $100.96 per share on July 13, 2026. The shares were withheld by the company to satisfy withholding obligations related to the partial vesting and settlement of restricted stock units. After this withholding, he directly holds 76,291 shares of Anterix common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Guttman-McCabe Christopher

Role Chief Reg & Comm Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	1,516	$100.96	$153K

Holdings After Transaction: Common Stock — 76,291 shares (Direct)

Footnotes (1)

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Key Figures

Shares withheld for tax: 1,516 shares Tax-withholding price: $100.96 per share Shares owned after transaction: 76,291 shares

3 metrics

Shares withheld for tax 1,516 shares Tax-withholding disposition of common stock on July 13, 2026

Tax-withholding price $100.96 per share Value assigned to the 1,516 withheld shares

Shares owned after transaction 76,291 shares Direct Anterix common stock holdings after the withholding event

Key Terms

tax-withholding disposition, withholding obligations, restricted stock units

3 terms

tax-withholding disposition financial

"reported a tax-withholding disposition of 1,516 shares of common stock"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

withholding obligations financial

"shares were withheld by the Issuer to satisfy withholding obligations"

restricted stock units financial

"in connection with the partial vesting and settlement of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/14/2026 - 04:10 PM Accepted by SEC EDGAR 07/14/2026 - 04:10 PM Learn about SEC filing dates

FAQ

What insider transaction did Anterix (ATEX) report for Christopher Guttman-McCabe?

Anterix reported that Christopher Guttman-McCabe had 1,516 shares of common stock disposed of through tax withholding on July 13, 2026. The shares were withheld by the company in connection with the partial vesting and settlement of restricted stock units.

How many Anterix (ATEX) shares were withheld and at what value?

A total of 1,516 shares of Anterix common stock were withheld at $100.96 per share. This value represents the price used for the tax-withholding disposition tied to the partial vesting and settlement of restricted stock units.

Why were Christopher Guttman-McCabe's Anterix (ATEX) shares withheld?

The shares were withheld by Anterix to satisfy withholding obligations arising from the partial vesting and settlement of restricted stock units. This reflects a tax-withholding mechanism rather than a discretionary open-market transaction by the executive.

How many Anterix (ATEX) shares does Christopher Guttman-McCabe own after the Form 4 transaction?

Following the tax-withholding disposition, Christopher Guttman-McCabe directly holds 76,291 shares of Anterix common stock. This figure reflects his direct ownership immediately after the issuer withheld 1,516 shares to cover tax-related obligations on vesting restricted stock units.

Was the Anterix (ATEX) Form 4 transaction an open-market sale?

No. The Form 4 describes a tax-withholding disposition, where 1,516 shares were withheld by Anterix to satisfy withholding obligations tied to vesting restricted stock units. The filing does not indicate that these shares were sold in the open market.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Guttman-McCabe Christopher

(Last) (First) (Middle)

3 GARRET MOUNTAIN PLAZA

SUITE 401

(Street)

WOODLAND PARK NEW JERSEY 07424

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Reg & Comm Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/13/2026

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

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

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

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/13/2026		F		1,516(1)	D	$100.96	76,291	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The shares were withheld by the Issuer to satisfy withholding obligations in connection with the partial vesting and settlement of restricted stock units.

Remarks:

	/s/ Gena L. Ashe	07/14/2026
	** 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 4 (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.
* Form 4: SEC 1474 (03-26)