Operating results (preliminary) (fair disclosure)

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Korea Gas Corporation / Operating Results (Preliminary) (Fair Disclosure) / (2026.08.10) Operating Results (Preliminary) (Fair Disclosure)

Operating Results (Preliminary) (Fair Disclosure)

Results period Current period results: 2026-07-01 ~ 2026-07-31 Prior period results: 2026-06-01 ~ 2026-06-30 Prior-year same-period results: 2025-07-01 ~ 2025-07-31 Current cumulative results: 2026-01-01 ~ 2026-07-31 Prior-year cumulative results: 2025-01-01 ~ 2025-07-31 ※ This information is preliminary and may differ from the final figures.

1. Results (Unit: KRW million, %) Category: Current period results; Prior period results; Change vs. prior period (%); Turned to profit/loss (-); Prior-year same-period results; Change vs. prior-year period (%); Turned to profit/loss (-) Revenue - current period: -; -; -; -; -; -; - Revenue - cumulative: -; -; -; -; -; -; - Operating profit - current period: -; -; -; -; -; -; - Operating profit - cumulative: -; -; -; -; -; -; - Profit before income tax from continuing operations - current period: -; -; -; -; -; -; - Profit before income tax from continuing operations - cumulative: -; -; -; -; -; -; - Net income - current period: -; -; -; -; -; -; - Net income - cumulative: -; -; -; -; -; -; -

Category: Unit (thousand tons); Current month results ('26.July); Prior month results ('26.June); Change vs. prior month (%); Prior-year same-month results ('25.July); Change vs. prior-year month (%) City gas: 1,020; 1,051; -2.9; 938; 8.7 Power generation: 1,210; 1,136; 6.5; 1,316; -8.1 Other: -; -; -; -; - Total: 2,230; 2,187; 2.0; 2,254; -1.1

2. Details of information provided Information provider: Sales Division, City Gas Sales Dept.; Sales Division, Power Generation Sales Dept. Information recipients: Institutional and retail investors, media Date of information provision (expected): 2026.08.10 Time of information provision (expected): - Event name (venue): -

3. Contact information Related department: Sales Division, City Gas Sales Dept.; Sales Division, Power Generation Sales Dept. Phone number: City Gas Sales Dept.: 053-670-0936; Power Generation Sales Dept.: 053-670-0230

4. Other matters material to investment decisions - The above results are the natural gas sales volume for July 2026. (Unit: thousand tons, %) - The above results are provisional settlement volumes, and the actual figures after final settlement may differ. ※ Related disclosures: -