Idemitsu Kosan

5019.TOil & Coal Products

Key numbers · FY ended 2026-03

Revenue¥8.11T-11.8% YoY Operating income¥212.2bn+30.8% YoY Net income (owners)¥171.9bn+65.2% YoY Total assets¥5.33T+11.6% YoY EPS (basic)¥140.38+80.4% YoY

Full financial history and reports →

Stock price5019 · View chart ↗

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Latest filings

Thu, Oct 8 · JST3 filings

17:075% STAKEIdemitsu Kosan · Aramco Downstream Asia Pte. Ltd. · 9.45%new 9.45%17:055% STAKEIdemitsu Kosan · Aramco Overseas Company B.V. · 9.45% → 0.00%−9.45pp 17:005% STAKEIdemitsu Kosan · Aramco Overseas Company B.V. · 7.76% → 9.45%+1.69pp

Thu, Sep 3 · JST1 filing

15:05MATERIALIdemitsu Kosan · Event with a material impact on financial position

Tue, Jun 9 · JST1 filing

16:575% STAKEIdemitsu Kosan · Nissho Kosan Co., LTD. + 5 joint holders · 14.15% → 15.30%+1.15pp

All filings →

Major holders (5%+) · 2

Holder	Stake	Change	Filed
Nissho Kosan Co., LTD.	8.95%	0.00pp	2026-06-09
Idemitsu Museum of Arts	7.32%	0.00pp	2024-07-02

Each holder's own ratio from its most recent large-shareholding report.