AT&T 8-K 2026-03-12

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) March 12, 2026

AT&T INC.

(Exact Name of Registrant as Specified in Charter)

Registrant’s telephone number, including area code (210) 821-4105

(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 (see General Instruction A.2. below):

Securities Registered Pursuant to Section 12(b) of the Act

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. ☐

On March 12, 2026, AT&T Inc. (“AT&T”) closed its sale of CAD$1,250,000,000 aggregate principal amount of its 4.500% Global Notes due 2036 and CAD$1,000,000,000 aggregate principal amount of its 5.250% Global Notes due 2056 (together, the “Notes”) pursuant to an Underwriting Agreement, dated March 5, 2026 (the “Underwriting Agreement”), between AT&T and CIBC World Markets Inc., RBC Dominion Securities Inc., Scotia Capital Inc. and TD Securities Inc., as the representatives of the several Underwriters. The Notes were issued pursuant to that certain Indenture, dated as of May 15, 2013, between AT&T and The Bank of New York Mellon Trust Company, N.A., as trustee. The Notes have been registered under the Securities Act of 1933, as amended (the “Act”), pursuant to a Registration Statement on Form S-3 (No. 333-285413) previously filed with the Securities and Exchange Commission under the Act, as supplemented by a prospectus supplement, dated March 5, 2026 relating to the Notes filed by AT&T on March 9, 2026. Copies of the Underwriting Agreement, the forms of Notes and the opinion of the Assistant Vice President - Senior Legal Counsel and Assistant Secretary of AT&T as to the validity of the Notes are filed as exhibits hereto and incorporated herein by reference. AT&T is filing this Current Report on Form 8-K so as to file with the Securities and Exchange Commission certain items that are to be incorporated by reference into its Registration Statement.

The following exhibits are filed as part of this report:

Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.