AT&T Results Presentation Deck

4Q21 Communications Segment $ in billions Revenues 8 EBITDA †4 Mobility $20.1 $7.1 35.3% $2.3 EBITDA Margin +4 37.0% 4Q20 $21.1 4Q20 4Q21 Business Wireline $6.3 $5.9 $2.2 $1.0 32.5% 4Q20 $7.4 35.0% 37.5% 4Q21 Consumer Wireline $3.1 $3.2 $1.0 31.3% 4Q21 Strong revenue, EBITDA and subscriber gains Revenues up 5.1%; service revenues up ~$650M, or 4.6% 884,000 postpaid phone net adds; 24,000 prepaid phone net adds Strong EBITDA and service margins; 2021 full-year EBITDA up ~$1.0B, or 3.2% Margins remain stable with continued portfolio rationalization Revenue comparable further impacted by proactive portfolio rationalization Emphasizing core network and transport connectivity Broadband drives revenue growth Broadband revenues grew 5.4% due to higher ARPU from fiber growth 271,000 fiber net additions January 26, 2022 / © 2022 AT&T Intellectual Property - AT&T Proprietary + See notes slide 13 AT&T

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