T: 10-Q financial filing

t-20260930 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2026 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-08610 AT&T INC. Incorporated under the laws of the State of Delaware I.R.S. Employer Identification Number 43-1301883 208 S. Akard St. , Dallas , Texas 75202 Telephone Number: ( 210 ) 821-4105 Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered Common Shares (Par Value $1.00 Per Share) T New York Stock Exchange NYSE Texas Depositary Shares, each representing a 1/1000th interest in a share of 5.000% Perpetual Preferred Stock, Series A T PRA New York Stock Exchange Depositary Shares, each representing a 1/1000th interest in a share of 4.750% Perpetual Preferred Stock, Series C T PRC New York Stock Exchange AT&T Inc. 1.800% Global Notes due September 5, 2026 T 26D New York Stock Exchange AT&T Inc. 2.900% Global Notes due December 4, 2026 T 26A New York Stock Exchange AT&T Inc. Floating Rate Global Notes due September 16, 2027 T 27C New York Stock Exchange AT&T Inc. 1.600% Global Notes due May 19, 2028 T 28C New York Stock Exchange AT&T Inc. Floating Rate Global Notes due August 17, 2028 T 28E New York Stock Exchange AT&T Inc. 2.350% Global Notes due September 5, 2029 T 29D New York Stock Exchange AT&T Inc. 4.375% Global Notes due September 14, 2029 T 29B New York Stock Exchange AT&T Inc. 2.600% Global Notes due December 17, 2029 T 29A New York Stock Exchange AT&T Inc. 0.800% Global Notes due Mar