T. Rowe Price discloses 12.0% stake in ANTERIX (NASDAQ: ATEX)

Rhea-AI Filing Summary

ANTERIX INC 13G filing shows T. Rowe Price Investment Management, Inc. reports beneficial ownership of 2,348,019 shares, representing 12.0% of outstanding common stock as of 06/30/2026. The filing includes declarations that beneficial ownership is denied by the filer and is signed by a Vice President on 07/08/2026.

Insights

Institutional Ownership Analyst

Large passive stake reported: 12.0% ownership by T. Rowe Price.

The filing lists 2,348,019 shares beneficially owned, equal to 12.0% of the class as of 06/30/2026. The filer notes a disclaimer denying beneficial ownership in its declaration.

Such a stake can influence market perception and disclosure obligations; subsequent filings may clarify voting or disposition intentions.

Key Figures

Beneficial ownership: 2,348,019 shares Percent of class: 12.0% Sole voting power: 2,345,228 shares +1 more

4 metrics

Beneficial ownership 2,348,019 shares Amount beneficially owned as of 06/30/2026

Percent of class 12.0% Percent of common stock as of 06/30/2026

Sole voting power 2,345,228 shares Sole power to vote reported in Item 4(c)(i)

Sole dispositive power 2,348,019 shares Sole power to dispose reported in Item 4(c)(iii)

Key Terms

Schedule 13G, Beneficial ownership, Sole dispositive power

3 terms

Schedule 13G regulatory

"T. Rowe Price Investment Management, Inc. filed a Schedule 13G"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

Beneficial ownership financial

"Amount beneficially owned: 2348019 (b) Percent of class: 12.0%"

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.

Sole dispositive power regulatory

"Sole power to dispose or to direct the disposition of: 2348019"

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.

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Available on EDGAR 07/08/2026 - 11:30 AM Accepted by SEC EDGAR 07/08/2026 - 11:30 AM Learn about SEC filing dates

FAQ

What stake does T. Rowe Price report in ANTERIX INC (ATEX)?

T. Rowe Price reports beneficial ownership of 2,348,019 shares of common stock, representing 12.0% of the class as of 06/30/2026. The report is filed on Schedule 13G and signed on 07/08/2026.

Does the filing say T. Rowe Price controls voting or disposition of ATEX shares?

The filing shows sole voting power of 2,345,228 shares and sole dispositive power of 2,348,019 shares. The filer also includes a declaration denying beneficial ownership in the submission signed by a Vice President.

What does the Schedule 13G declaration from T. Rowe Price mean for ATEX investors?

Schedule 13G indicates a large-holding disclosure; here it reports 12.0% ownership as of 06/30/2026. The filing contains an explicit denial of beneficial ownership by the filer in the text and is executed by an authorized officer.

When were the ownership figures in the ATEX filing dated and signed?

The ownership amount is stated as of 06/30/2026 and the Schedule 13G was signed by Ellen York, Vice President, on 07/08/2026. The filing includes the issuer CUSIP 03676C100 and issuer address details.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

ANTERIX INC

(Name of Issuer)

COMMON STOCK

(Title of Class of Securities)

03676C100

(CUSIP Number)

06/30/2026

(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

T. Rowe Price Investment Management, 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

MARYLAND

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 2,345,228.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 2,348,019.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,348,019.00

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)

12.0 %

12

Type of Reporting Person (See Instructions)

IA

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: T. Rowe Price Investment Management, Inc.
(b)	Address or principal business office or, if none, residence: 1307 Point Street, Baltimore, MD 21231
(c)	Citizenship: Maryland
(d)	Title of class of securities: COMMON STOCK
(e)	CUSIP Number(s): 03676C100
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 2348019
(b)	Percent of class: 12.0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 2345228
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 2348019
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
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. T. Rowe Price Investment Management, Inc. hereby declares and affirms that the filing of Schedule 13G shall not be construed as an admission that Price Investment Management is the beneficial owner of the securities referred to, which beneficial ownership is expressly denied.

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.

T. Rowe Price Investment Management, Inc.

Signature:	Ellen York
Name/Title:	Vice President
Date:	07/08/2026