BlackRock reports 4.98% stake in Anterix

BlackRock, Inc. filed an Amendment No. 3 to Schedule 13G/A reporting beneficial ownership of 4.98% of Anterix Inc. common stock, equal to 934,649 shares.

Rhea-AI Filing Summary

BlackRock, Inc. filed an Amendment No. 3 to Schedule 13G/A reporting beneficial ownership of 4.98% of Anterix Inc. common stock, equal to 934,649 shares. The filing shows BlackRock holds 934,649 shares with sole voting power on 922,145 shares and sole dispositive power on 934,649 shares. The schedule states ownership is held by certain Reporting Business Units and was signed on 04/27/2026.

Insights

Institutional Ownership Analyst

BlackRock reports a 4.98% passive stake in Anterix held through reporting business units.

BlackRock's Amendment No. 3 to Schedule 13G/A lists 934,649 shares beneficially owned, with 922,145 shares subject to sole voting power and 934,649 shares under sole dispositive power. The filing attributes holdings to certain Reporting Business Units rather than other BlackRock business units.

Ownership is below the 5% threshold described in Item 5. The filing notes various persons may have rights to receive proceeds or dividends; no single external person exceeds 5%. Subsequent filings would show material changes to position.

Key Figures

Shares beneficially owned: 934,649 shares Percent of class: 4.98% Sole voting power: 922,145 shares +2 more

5 metrics

Shares beneficially owned 934,649 shares Amount beneficially owned stated in Item 4(a)

Percent of class 4.98% Percent of class stated in Item 4(b)

Sole voting power 922,145 shares Sole power to vote per Item 4(c)(i)

Sole dispositive power 934,649 shares Sole power to dispose per Item 4(c)(iii)

Filing signature date 04/27/2026 Signature date on the Schedule 13G/A amendment

Key Terms

Schedule 13G/A, Beneficially owned, Sole dispositive power, Reporting Business Units

4 terms

Schedule 13G/A regulatory

"Amendment No. 3 to Schedule 13G/A reporting beneficial ownership"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

Beneficially owned financial

"Amount beneficially owned: 934649"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole dispositive power financial

"Sole power to dispose or to direct the disposition of: 934649"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Reporting Business Units regulatory

"beneficially owned by certain business units (collectively, the "Reporting Business Units")"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stake does BlackRock report in ANTERIX INC. (ATEX)?

BlackRock reports beneficial ownership of 934,649 shares, representing 4.98% of common stock. The Schedule 13G/A states sole voting power on 922,145 shares and sole dispositive power on 934,649, filed as Amendment No. 3.

Does BlackRock control voting for the shares it reports?

Yes; BlackRock reports sole voting power over 922,145 shares. The filing differentiates sole voting and dispositive powers and attributes holdings to Reporting Business Units of BlackRock.

Was the Schedule 13G/A amendment signed recently?

The filing was signed on 04/27/2026 by a BlackRock Managing Director. It is labeled Amendment No. 3 and updates the ownership information for Anterix common stock.

Is BlackRock's position greater than 5% of Anterix stock?

No; the filing shows BlackRock beneficially owns 4.98% of the class. Item 5 confirms ownership of 5 percent or less of the class in this schedule.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/27/2026 - 04:12 PM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 3)

ANTERIX INC.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

03676C100

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 03676C100

1

Names of Reporting Persons

BlackRock, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 922,145.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 934,649.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

934,649.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.98 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: ANTERIX INC.
(b)	Address of issuer's principal executive offices: 3 GARRET MOUNTAIN PLAZA, SUITE 401 WOODLAND PARK NJ 07424
Item 2.
(a)	Name of person filing: BlackRock, Inc. In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the "Reporting Business Units") of BlackRock, Inc. and its subsidiaries and affiliates. It does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release.
(b)	Address or principal business office or, if none, residence: BlackRock, Inc., 50 Hudson Yards New York, NY 10001
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 03676C100
Item 4.	Ownership
(a)	Amount beneficially owned: 934649
(b)	Percent of class: 4.98 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 922145
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 934649
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. Various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the common stock of ANTERIX INC.. No one person's interest in the common stock of ANTERIX INC. is more than five percent of the total outstanding common shares.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit 99
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BlackRock, Inc.

Signature:	Spencer Fleming
Name/Title:	Managing Director
Date:	04/27/2026

Exhibit Information

Exhibit 24: Power of Attorney Exhibit 99: Item 7