Idemitsu KosanIdemitsu Kosan Co.,Ltd.5019東証プライム石油・石炭製品FY ending Mar 2026, consolidated, J-GAAP

Idemitsu Kosan FY ending Mar 2026 results

About 84% of Idemitsu Kosan's sales come from Petroleum, with Functional Materials and Basic Chemicals making up much of the rest.

Out of every ¥100 of sales, about ¥2 is left as operating profit.

Revenue changed -11.8% from the prior year, operating profit +30.8%.

Revenue and profit pattern

Revenue down, profit up

Revenue -11.8% · profit +30.8%, calculated from disclosed figures.

Operating leverage: -2.61× (profit growth ÷ revenue growth)

FY ending Mar 2025 → FY ending Mar 2026

Revenue for FY ending Mar 2026 was ¥8.11T, down from ¥9.19T (-11.8%).
Profits moved the other way: operating income reached ¥212.2B (+30.8%) and net income attributable to owners reached ¥171.9B (+65.2%).
Cash generation weakened, with operating cash flow at ¥392.4B (-17.7%) and free cash flow at ¥225.6B (-40.9%).

Lower crude prices pulled down petroleum sales.
The closure of the Strait of Hormuz sent crude prices sharply higher late in the year, and the gap between buying and selling prices worked in the company's favor, more than offsetting weaker coal prices.
In functional materials, strong overseas lubricant sales and newly consolidated companies added to profit.

Most crude oil and naphtha imports come from the Middle East, so a long disruption from political unrest or shipping problems could hit results hard.
Crude prices have been swinging sharply with events in the Middle East and may keep doing so.
Domestic fuel sales are slowly shrinking as fewer cars are owned and fuel economy improves.

Annual Securities Report (111th term) / 経営者による財政状態、経営成績及びキャッシュ・フローの状況の分析 · Annual Securities Report (111th term) / 事業等のリスク

FY ending Mar 2025 → FY ending Mar 2026

For every ¥100 Idemitsu Kosan sells, how much goes where, and how much is kept.

FY ending Mar 2026

Gross margin9.3%

Operating margin2.6%

Net margin2.1%

Aligned fiscal years compare the shares of revenue remaining as gross, core, and net profit. Missing years are left unconnected.

Revenue by business segment, and the profit each one keeps.

FY ending Mar 2026

Petroleum¥6.79T
84%
Op. margin 2.6%Industry: Oil Refining & Fuels
Functional Materials¥503.2B
6%
Op. margin 6.9%Industry: Chemicals
Basic Chemicals¥491.4B
6%
Op. margin -1.5%Industry: Chemicals
Resources¥203.5B
3%
Op. margin 14.3%Industry: Oil, Gas & Mining
Power and Renewable Energy¥98.2B
1%
Op. margin -1.9%Industry: Electric Power & Gas
Other¥16.3B
0%
Op. margin 5.7%

※ Segment figures include inter-segment sales and do not sum to the company total

Show source documents (6)

EDINET (FSA Japan)
有価証券報告書－第111期(2025/04/01－2026/03/31)
ID S100YCS32026-06-17Open
EDINET (FSA Japan)
有価証券報告書－第110期(2024/04/01－2025/03/31)
ID S100VZEN2025-06-19Open
EDINET (FSA Japan)
有価証券報告書－第109期(2023/04/01－2024/03/31)
ID S100TQXR2024-06-25Open
EDINET (FSA Japan)
有価証券報告書－第108期(2022/04/01－2023/03/31)
ID S100R0S22023-06-22Open
EDINET (FSA Japan)
訂正有価証券報告書－第107期(令和3年4月1日－令和4年3月31日)
ID S100P8S82022-09-29Open
EDINET (FSA Japan)
有価証券報告書－第106期(令和2年4月1日－令和3年3月31日)
ID S100LLT72021-06-23Open

Extracted from XBRL: 57 / Derived from other figures: 2

Spotted an error? Report it (corrections keep the original record)

Markdown with figures, units, periods and sources, ready to paste into ChatGPT or Claude.