Korea District Heating

071320 · KOSPI · Utilities · SMALL CAP

Operating results (preliminary) (fair disclosure)

Korea District Heating reported preliminary July 2026 volumes, with heat sales up 9.9% month-on-month to 543 thousand Gcal and electricity sales down 23.9% year-on-year to 921 GWh; detailed preliminary revenue and profit figures were not disclosed.

Earnings(Operating results (preliminary) (fair disclosure))· FILED 2026-08-26· RCEPT 20260826800336

What happened

Performance period Current period performance: 2026-07-01 ~ 2026-07-31 Prior period performance: 2026-06-01 ~ 2026-06-30 Same period last year: 2025-07-01 ~ 2025-07-31 Current cumulative performance: 2026-01-01 ~ 2026-07-31 Cumulative performance, same period last year: 2025-01-01 ~ 2025-07-31 * This information is preliminary and may differ from the final confirmed figures.

1. Performance details (unit: KRW 100 million, %) Category: current period / prior period / change vs. prior period (%) / turned to profit or loss / same period last year / change vs. same period last year (%) / turned to profit or 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: current month ('26.7) / prior month ('26.6) / change vs. prior month (%) / same month last year ('25.7) / change vs. same month last year (%) Heat sales volume (thousand Gcal): 543 / 494 / 9.9% / 534 / 1.7% Cold water sales volume (thousand Gcal): 45 / 36 / 25.0% / 46 / -2.2% Electricity sales volume (GWh, sold via Korea Power Exchange): 921 / 752 / 22.5% / 1,211 / -23.9%

2. Information disclosure details Information provider: Treasury & IR Department, Finance Division, Management Support Office Intended recipients: Domestic and overseas institutional and general investors Information provision date: 2026-08-26 Provision time: - Event name (location): -

3. Contact Relevant department: Treasury & IR Department, Finance Division Disclosure officer phone: 031-780-4262/4264

4. Other important matters relevant to investment decisions * The above results are for July 2026 operations. * The electricity sales volume above includes other sales volume such as district electricity. * The above sales figures are estimates prepared on the Company's internal basis, so actual figures may differ once finalized through the settlement process.

Related disclosure: -

Filed2026-08-26, Operating results (preliminary) (fair disclosure)
SourceDART rcept 20260826800336 → open original filing

Source: DART. Information only, not investment advice.

For informational purposes only. This is not investment advice, a recommendation, or a solicitation to buy or sell any security. Do your own research; any investment decision is your own responsibility.

Data from DART, Korea's official corporate-filing system. Data sourced from official DART filings. Accuracy is not guaranteed. Figures are as of the date shown. As of 2026-08-26 (KST). · Converted at 1 USD ≈ ₩1,325 (rate of 2026-10-21).