Anterix (ATEX) director donates 5,400 shares in gift

Rhea-AI Filing Summary

Anterix Inc. (ATEX) director William Heard reported a bona fide gift of 5,400 shares of Common Stock on 2026-08-19. The filing notes this represents a charitable donation of shares to a Donor Advised Fund. Following the gift, he directly holds 3,965 shares of Common Stock.

The filing also reports 1,670,338 shares of Common Stock held indirectly through certain investment funds and/or accounts for which Heard Capital LLC serves as investment manager. William Heard is the ultimate beneficial owner of Heard Capital LLC, and both Heard Capital LLC and William Heard disclaim beneficial ownership of these indirectly held securities for Section 16 purposes, except to the extent of their pecuniary interest.

Insider Trade Summary

Net Seller: 5,400 shares

Net Sell 2 txns

Insider Heard William

Role Director

Type	Security	Shares	Price	Value
Gift	Common Stock, par value $0.0001 per share ("Common Stock") F1	5,400	$0.00	$0.00
holding	Common Stock F2	--	--	--

Holdings After Transaction: Common Stock, par value $0.0001 per share ("Common Stock") — 3,965 shares (Direct); Common Stock — 1,670,338 shares (Indirect, By Heard Capital LLC)

Footnotes (2)

1. F1. Represents a charitable donation of shares to a Donor Advised Fund.
2. F2. These securities are held by certain investment funds and/or accounts for which Heard Capital LLC serves as investment manager. The Reporting Person is the ultimate beneficial owner of Heard Capital LLC. Each of Heard Capital LLC and the Reporting Person disclaims beneficial ownership of the securities to which this filing relates for purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except to the extent of his or its pecuniary interest therein.

Key Figures

Shares gifted: 5,400 shares of Common Stock Direct holdings after transaction: 3,965 shares of Common Stock Indirect holdings via Heard Capital LLC: 1,670,338 shares of Common Stock +2 more

5 metrics

Shares gifted 5,400 shares of Common Stock Bona fide gift on 2026-08-19; charitable donation to a Donor Advised Fund

Direct holdings after transaction 3,965 shares of Common Stock Direct ownership reported following the 5,400-share gift

Indirect holdings via Heard Capital LLC 1,670,338 shares of Common Stock Held by certain investment funds/accounts for which Heard Capital LLC is investment manager

Gift transaction price per share $0.00 per share Reported price for the bona fide gift of 5,400 shares

Total gifted shares in this Form 4 5,400 shares Transaction summary giftShares

Key Terms

bona fide gift, Donor Advised Fund, beneficial ownership, pecuniary interest

4 terms

bona fide gift financial

"Transaction code G is described as a bona fide gift"

A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.

Donor Advised Fund financial

"Represents a charitable donation of shares to a Donor Advised Fund"

A donor advised fund is a charitable savings account you fund with cash or assets (including stocks) that lets you take an immediate tax benefit while recommending when and which charities receive grants over time. Think of it like a dedicated piggy bank for giving: you get tax relief when you put money in, can avoid selling appreciated securities and triggering capital gains, and still control the timing and recipients of donations, which affects tax planning, portfolio decisions, and public giving signals.

beneficial ownership financial

"Each of Heard Capital LLC and the Reporting Person disclaims beneficial ownership"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

pecuniary interest financial

"except to the extent of his or its pecuniary interest therein"

FAQ

What insider transaction did William Heard report in this Form 4 for ATEX?

William Heard reported a bona fide gift of 5,400 shares of Anterix Inc. Common Stock on 2026-08-19. The filing describes this as a charitable donation of shares to a Donor Advised Fund.

How many Anterix (ATEX) shares did William Heard hold directly after the reported gift?

After the reported gift, William Heard directly held 3,965 shares of Anterix Inc. Common Stock, according to the Form 4 disclosure.

How many Anterix (ATEX) shares are reported as indirectly held through Heard Capital LLC?

The Form 4 reports 1,670,338 shares of Anterix Inc. Common Stock as indirectly held by certain investment funds and/or accounts for which Heard Capital LLC serves as investment manager.

What does the Form 4 say about William Heard’s beneficial ownership of ATEX shares held via Heard Capital LLC?

The filing states that the indirectly held shares are in funds/accounts managed by Heard Capital LLC. William Heard is the ultimate beneficial owner of Heard Capital LLC, but both disclaim beneficial ownership for Section 16 purposes, except to the extent of their pecuniary interest.

Was the 5,400-share ATEX transaction a sale or a charitable transfer?

The 5,400-share transaction was reported with code G, described as a bona fide gift. A footnote specifies it represents a charitable donation of shares to a Donor Advised Fund, not an open-market sale.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/20/2026 - 04:30 PM Accepted by SEC EDGAR 08/20/2026 - 04:29 PM Learn about SEC filing dates

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^*

Heard William

(Last) (First) (Middle)

C/O HEARD CAPITAL LLC

1 N. WACKER DRIVE, SUITE 3650

(Street)

CHICAGO ILLINOIS 60606

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/19/2026

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, par value $0.0001 per share ("Common Stock")	08/19/2026		G(1)		5,400	D	$0	3,965	D
Common Stock								1,670,338	I	By Heard Capital LLC(2)

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. Represents a charitable donation of shares to a Donor Advised Fund.

2. These securities are held by certain investment funds and/or accounts for which Heard Capital LLC serves as investment manager. The Reporting Person is the ultimate beneficial owner of Heard Capital LLC. Each of Heard Capital LLC and the Reporting Person disclaims beneficial ownership of the securities to which this filing relates for purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except to the extent of his or its pecuniary interest therein.

Remarks:

	s/ Gena L. Ashe, Attorney-in-Fact	08/20/2026
	** 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)