ARRAY DIGITAL INFRASTRUCTURE, INC. — Regulatory Filings 2026

May 8, 2026

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 8, 2026

ARRAY DIGITAL INFRASTRUCTURE, INC.

(Exact name of registrant as specified in its charter)

Delaware	001-09712	62-1147325
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

500 West Madison Street , Chicago , Illinois 60661

(Address of principal executive offices and zip code)

Registrant's telephone number, including area code: (866) 573-4544

Not Applicable

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act: — Title of each class	Trading Symbol	Name of each exchange on which registered
Common Shares, $1 par value	USM	New York Stock Exchange
6.25% Senior Notes due 2069	UZD	New York Stock Exchange
5.50% Senior Notes due 2070	UZE	New York Stock Exchange
5.50% Senior Notes due 2070	UZF	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

☐ Emerging growth company

☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Item 8.01. Other Events

On May 8, 2026, Array Digital Infrastructure, Inc. (the “Company”) issued a press release (the “Press Release”) regarding the proposal submitted to the Board of Directors of the Company by Telephone and Data Systems, Inc. A copy of the Press Release is attached as Exhibit 99.1 and incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits

(d) The following exhibits are being filed herewith:

Exhibit Number	Description of Exhibits
99.1	Press Release, dated May 8, 2026 .
104	Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document.

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
		ARRAY DIGITAL INFRASTRUCTURE, INC.
Date:	May 8, 2026	By:	/s/ Walter C. D. Carlson
			Walter C. D. Carlson
			Chair