2023 Financial Results

2022 Financial Results Non-consolidated Profitability improved thanks to solid MNO revenue growth and stabilization of marketing and depreciation costs Non-consolidated Income Statement Key Metrics (KRW bn) Operating revenue 2022 2021 YOY 4Q22 4Q21 YoY OP & margin 12,415 12,103 2.6% 3,096 3,073 0.8% - MNO 10,463 10,257 2.0% 2,634 2,590 1.7% (KRW bn) 1,321 1,114 - Other 1,952 1,846 5.8% 462 483 A4.4% 381 389 Operating 357 11,093 10,989 1.0% 2,902 2,914 A0.4% expenses - Marketing 3,063 3,216 A4.8% 798 813 A1.8% expense 195 10.6% - Depreciation 1) 2,828 2,914 A3.0% 705 728 A3.2% Operating 1,321 1,114 18.6% 195 159 22.3% 11.6% 12.2% 12.4% income 9.2% Net income 869 1,074 ▲ 19.0% 88 265 A66.9% 6.3% EBITDA 4,149 CAPEX 2,215 4,029 2,179 3.0% 899 887 1.4% 1Q22 2Q22 3Q22 4Q22 2021 2022 1.7% 1,091 1,026 6.3% 1) R&D related depreciation and amortization included EBITDA & margin • MNO revenue up 2% thanks to 5G subscriber growth and roaming revenue recovery O Non-consolidated revenue of KRW 12.4tn, up 2.6% YoY • Top-line growth of solutions and products T universe (KRW bn) 4,149 4,029 • Non-consolidated operating income of KRW 1.3tn, up 18.6% YoY 1,070 1,085 1,094 • Profitability up 1.4%p thanks to stable marketing and depreciation costs despite increase in fees content, outsourcing, etc. 899 for new service expansion Non-consolidated net income of KRW 869.5bn, down 19% YoY • Base effect due to last year's asset sale Wyverns ● Non-consolidated CAPEX of KRW 2.2tn executed 33.4% 34.8% 34.8% 35.0% 33.3% 29.0% 1Q22 2Q22 3Q22 4Q22 2021 2022 LO 5

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