Logotype for Idemitsu Kosan Co. Ltd

Idemitsu Kosan Co. (5019) Q1 2026 earnings summary

Event summary combining transcript, slides, and related documents.

Logotype for Idemitsu Kosan Co. Ltd

Q1 2026 earnings summary

8 Aug, 2025

Executive summary

  • Operating and equity income excluding inventory impact fell ¥48.3B year-over-year, mainly due to negative time lag from crude oil price drop, lower coal prices, and weaker basic chemical margins.

  • Net sales for the three months ended June 30, 2025, were ¥1,843.0B, down 18.5% year-over-year, with an operating loss of ¥21.0B and net income attributable to owners of ¥5.2B, down 94.5%.

  • 1Q results exceeded initial forecasts due to robust domestic margins, but full-year guidance remains unchanged.

  • Comprehensive income was negative ¥13.4B, compared to ¥126.2B in the prior year period.

Financial highlights

  • Net sales decreased 18.5% year-over-year to ¥1,843.0B; operating income dropped to -¥21.0B from ¥122.5B.

  • Net income attributable to owners fell 94.5% year-over-year to ¥5.2B; excluding inventory impact, net income was ¥40.3B, down 34.8%.

  • Inventory impact was -¥50.5B, a swing of -¥98.5B year-over-year.

  • Gross profit for the quarter was ¥104.6B, down from ¥245.5B year-over-year.

  • Equity ratio improved to 38.3% from 36.0% at prior quarter-end.

Outlook and guidance

  • FY2025 full-year forecasts remain unchanged: net sales ¥7,900.0B, operating income ¥37.0B, net income attributable to owners ¥50.0B.

  • Assumptions: Dubai crude oil at $65/bbl, Australian coal at $95/ton, exchange rate at ¥145/USD.

  • Sensitivity: ±$10/bbl crude oil impacts operating income by ±¥30B (excluding inventory) and ±¥68B (inventory impact).

  • No change in the previously announced forecasts as of May 13, 2025.

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