[Form 4] United States Cellular Corporation 5.500% Senior Notes due 2070 Insider Trading Activity

Rhea-AI Filing Summary

Harry J. Harczak Jr., a director of Array Digital Infrastructure, Inc. (USM), reported an open-market sale of 1,960 common shares on 08/18/2025 at a weighted average price of $76.2025 per share. After the transaction he beneficially owns 19,374 shares, held in a direct capacity. The Form 4 indicates the filing was signed by Julie D. Mathews by power of attorney on the same date. The report uses transaction code S (sale) and states the price as a weighted average.

Positive

• Timely disclosure of an insider sale under Section 16 is reported on Form 4
• Clear documentation of transaction details including date, volume, and weighted average price

Negative

• Insider sale of 1,960 shares (transaction code S) which reduces direct beneficial ownership
• Filing lacks any statement of a Rule 10b5-1 plan or reason for the sale

Insights

Securities Analyst

TL;DR: Director reported a routine open-market sale of 1,960 shares, leaving 19,374 shares owned directly.

The Form 4 discloses a single non-derivative transaction: an open-market sale (code S) of 1,960 common shares on 08/18/2025 at a weighted average price of $76.2025, producing a remaining direct beneficial ownership of 19,374 shares. The filing is executed via power of attorney. This is a standard Section 16 disclosure of insider trading activity and contains no derivative transactions or additional material disclosures.

Corporate Governance Expert

TL;DR: Disclosure shows compliance with reporting rules; sale recorded and properly reported by POA.

The Form 4 reflects timely reporting of a director's sale and identifies the relationship (Director) and the method of signature (power of attorney). The form does not include amendments or additional explanatory remarks beyond a weighted average price note. No information about the reason for the sale, any trading plan, or other contemporaneous transactions is provided in the filing.

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

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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^*

HARCZAK HARRY J JR

(Last) (First) (Middle)

500 W. MADISON STREET, SUITE 810

(Street)

CHICAGO IL 60661

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ARRAY DIGITAL INFRASTRUCTURE, INC. [ USM ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
08/18/2025

4. 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 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 Shares	08/18/2025		S		1,960	D	$76.2025(1)	19,374	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. Weighted average price per share.

Remarks:

	Julie D Mathews, by power of atty	08/18/2025
	** 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 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.

FAQ

What transaction did Harry J. Harczak Jr. report on Form 4 for USM?

He reported an open-market sale of 1,960 common shares on 08/18/2025 (transaction code S) at a weighted average price of $76.2025.

How many USM shares does the reporting person own after the reported transaction?

The Form 4 states the reporting person beneficially owns 19,374 common shares following the sale.

What relationship does the reporting person have to Array Digital Infrastructure, Inc. (USM)?

The filing indicates the reporting person is a Director of the issuer.

Who signed the Form 4 and how was it executed?

The Form 4 was signed by Julie D. Mathews by power of attorney on 08/18/2025.

Does the Form 4 show any derivative transactions or additional securities?

No. The filing reports only a non-derivative sale of common shares and contains no derivative transaction entries.