2023 Financial Results

2022 Financial Results Consolidated Solid growth thanks to 5G subscriber growth of SKT and growth of pay tv subscribers and B2B revenue of SKB Consolidated Income Statement Key Metrics (KRW bn) Operating 2022 2021 YOY 4Q22 4Q21 YoY OP & margin 17,305 16,749 3.3% 4,394 4,295 2.3% revenue - SKT 12,415 12,103 2.6% 3,096 3,073 0.7% 460 466 (KRW bn) 1,612 1,387 - SKB 4,156 4,049 2.6% 1,053 1,061 A0.7% 432 Operating 15,693 15,361 2.2% 4,140 4,071 1.7% expenses Operating 1,612 1,387 16.2% 254 224 13.5% 254 income 10.7% 10.7% 10.1% - SKT 1,321 1,114 18.6% 195 159 22.3% - SKB 306 276 10.9% 72 57 25.1% 9.3% 8.3% 5.8% Net income 948 2,419 A60.8% 224 315 A28.9% EBITDA 5,367 5,207 3.1% 1,189 1,187 0.2% 1Q22 2Q22 3Q22 4Q22 2021 2022 CAPEX 3,035 3,001 1.1% 1,492 1,422 4.9% EBITDA & margin Consolidated revenue of KRW 17.3tn, up 3.3% YoY Top-line growth thanks to 5G & IPTV subscriber growth and B2B revenue growth Consolidated operating income of KRW 1.6tn, up 16.2% YoY •Improved profitability on the back of top-line growth of profitable fixed and mobile business, reduced market competition, and efforts for cost efficiency 1,379 1,400 1,399 (KRW bn) 5,367 5,207 1,189 O Consolidated net income fell 60.8% YoY to KRW 947.8bn 32.2% 32.6% 32.2% 31.1% • Net income fell 25.4% YoY when excluding discontinued operating income due to the spin-off 31.0% Consolidated CAPEX of KRW 3tn executed 27.1% 1Q22 2Q22 3Q22 4Q22 2021 2022 4

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