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Idemitsu Kosan, Net Income to Reach 75 Billion Yen for The Current Fiscal Year

Tue May 12, 2026 3:30 pm JST Earnings

5019 Idemitsu Kosan Co.,Ltd. 【J-GAAP】

Earnings Report

Idemitsu Kosan Co.,Ltd. <5019> [TSE Prime] announced its financial results after the market closed on May 12th (15:30). The consolidated net income for the fiscal year ended March 2026 expanded to 65.2% from the previous period to 171 billion yen. With the transition to International Financial Reporting Standards (IFRS) for the fiscal year ending March 2027 is also bleak, with an expected significant drop by 75.0 billion yen.

In the most recent three-month period, from January to March (4Q), the consolidated net income/loss turned to a profit of 119 billion yen (compared to a loss of 23.3 billion yen in the same period last year). The operating profit margin drastically improved from 1.7% in the same period last year to 8.1%.

Note: As accounting standards will be transitioning from Japan GAAP to IFRS from the fiscal year ending March 2027, comparisons with the previous period are not shown.

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Actual Results

Historical Performance
Fiscal Year Revenue Operating Profit Ordinary Profit Net Profit Adj. EPS Adj. Dividend Announce Accounting Standards
Mar, 2024 8,719,201 346,316 385,246 228,518 161.3 32 May 14, 2024 J-GAAP
Mar, 2025 9,190,225 162,185 214,764 104,055 77.8 36 May 13, 2025 J-GAAP
Mar, 2026 8,105,891 212,203 229,646 171,914 140.4 36 May 12, 2026 J-GAAP
YoY -11.8% +30.8% +6.9% +65.2% +80.4%

Full Year Results vs. Previous Guidance

Fiscal Year Revenue Operating Profit Ordinary Profit Net Profit Adj. EPS Adj. Dividend Announce Accounting Standards
Mar, 2026 Guidance 7,950,000 68,000 85,000 75,000 61.2 36 Nov 11, 2025 J-GAAP
Mar, 2026 Results 8,105,891 212,203 229,646 171,914 140.4 36 May 12, 2026 J-GAAP
Revision Rate +2.0% +212.1% +170.2% +129.2% +129.2%

Current Period Guidance

H1 Results

Fiscal Year Revenue Operating Profit Ordinary Profit Net Profit Adj. EPS Adj. Dividend Announce Accounting Standards
Apr - Sep, 2025 3,805,653 25,844 35,265 36,075 29.5 18 Nov 11, 2025 J-GAAP
Apr - Sep, 2026 Guidance ー ー ー ー － 18 May 12, 2026 IFRS
YoY － － － － －

Current Period Guidance

Fiscal Year Revenue Operating Profit Ordinary Profit Net Profit Adj. EPS Adj. Dividend Announce Accounting Standards
Mar, 2025 9,190,225 162,185 214,764 104,055 77.8 36 May 13, 2025 J-GAAP
Mar, 2026 8,105,891 212,203 229,646 171,914 140.4 36 May 12, 2026 J-GAAP
Mar, 2027 Guidance ー ー ー 75,000 61.9 36 May 12, 2026 IFRS
YoY － － － － －

Quarterly Results

Fiscal Year Revenue Operating Profit Ordinary Profit Net Profit Adj. EPS Operating Profit Margin Announce Accounting Standards
Jan - Mar, 2025 2,313,761 38,910 48,951 -23,399 -17.5 1.7 May 13, 2025 J-GAAP
Apr - Jun, 2025 1,843,035 -21,015 -13,738 5,243 4.3 -1.1 Aug 8, 2025 J-GAAP
Jul - Sep, 2025 1,962,618 46,859 49,003 30,832 25.2 2.4 Nov 11, 2025 J-GAAP
Oct - Dec, 2025 2,138,937 10,847 19,724 16,503 13.5 0.5 Feb 10, 2026 J-GAAP
Jan - Mar, 2026 2,161,301 175,512 174,657 119,336 97.5 8.1 May 12, 2026 J-GAAP
YoY -6.6% +351.1% +256.8% － －

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