Company news
Idemitsu Kosan Co., Ltd. (TSE:5019) news
Every Idemitsu Kosan Co., Ltd. press release and news update in one place — announcements, filings coverage, and company updates for investors.
Press releases & updates
Notice Regarding Receipt of Dividends from Consolidated Subsidiary
September 2, 2026
Idemitsu Kosan : ESG Report (trh49s0000002l3b)
August 27, 2026
Idemitsu Kosan : ESG Report (trh49s0000002l3k)
August 27, 2026
Idemitsu Kosan : ESG Report (trh49s0000002l32)
August 27, 2026
Idemitsu Kosan : ESG Report (trh49s0000002l2r)
August 27, 2026
Consolidated Financial Results [IFRS] for the three months ended June 30, 2026(The Completion of the Independent Auditor’s Review)
August 14, 2026
Consolidated Financial Results [IFRS] for the three months ended June 30, 2026
August 7, 2026
Announcement on Completion of the Acquisition of Treasury Shares and Number of Treasury Shares to be Cancelled
June 10, 2026
Idemitsu Kosan : Notice of The 111th Ordinary General Meeting of Shareholders
May 26, 2026
Idemitsu Kosan : Announcement on the Continuation and Revision of the Performance-linked Stock Compensation Plan
May 12, 2026
Idemitsu Kosan : Notice of Change of Representative Director and Directors
May 12, 2026
Idemitsu Kosan : Announcement on Differences between Forecast and Actual Performance
May 12, 2026
Idemitsu Kosan : Announcement Regarding Acquisition and Cancellation of Treasury Shares
May 12, 2026
Idemitsu Kosan : Announcement on Medium-term Management Plan (FY2026-2030) and Voluntary Adoption of IFRS
May 12, 2026
Idemitsu Kosan : Presentation on Results for FY2025
May 12, 2026
Idemitsu Kosan : Consolidated Financial Results for the fiscal Year Ended March 31, 2026
May 12, 2026
Japan oil refiner Idemitsu to supply 4 million barrels of crude to Vietnam
April 30, 2026
Idemitsu Kosan : Mitsui Chemicals, Idemitsu Kosan, and Sumitomo Chemical Receive Japan Fair Trade Commission Clearance for the Integration
April 24, 2026
Idemitsu Kosan : Notice regarding conclusion of a loan agreement with financial covenants
April 24, 2026
EIG’s MidOcean Energy Announces Initial Equity Raise of $1.2 billion Versus $1.0 billion Cover
March 17, 2026
Idemitsu Kosan : Notice Concerning the Postponement of the Announcement Schedule for the Next Medium-term Management Plan
March 13, 2026
Idemitsu Kosan : Consolidated Financial Results for the nine months ended December 31, 2025
February 10, 2026
Overwatch Capital and Idemitsu Form 1 GW Partnership to Build High-Density AI Data Centers Across Ten U.S. States
November 20, 2025
Idemitsu Kosan and Source Energy Company Announce Strategic Collaboration to Co-Create Next-Generation Solar Array Products for Space Market
November 5, 2025
Idemitsu Partners with Rimini Street to Support and Enable its Long-Term IT Roadmap and Strategy Built on Top of its SAP ECC 6.0 System
September 4, 2025