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2026-03-16
Press Release Cosmo Energy HoldingsCosmo and Nihon University to Jointly Explore the Development of Bio-Isobutanol Using Non-Food-Competing Feedstocks ~Aiming to Establish an Efficient Process for Producing Second-Generation Alcohol from Sugars~
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2026-03-12
Press Release Cosmo Energy Holdings IR IR EventNotice of Acquisition Results of Treasury Shares and Completion of Share Repurchases (Acquisition of Treasury Shares Pursuant to the Provisions of the Articles of Incorporation Pursuant to Paragraph 3 of Article 165 of the Companies Act)
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2026-03-02
Press Release Cosmo Energy Holdings IR IR EventNotice Regarding Progress on the Stock Repurchase (Repurchases of Shares of the Company’s Own Stock in Accordance with the Provisions of Articles of Incorporation Pursuant to Article 165, Paragraph 2 of the Companies Act)
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2026-02-25
Press Release Cosmo Energy Holdings Cosmo Oil MarketingCosmo Commences Construction of High-Voltage, Grid-Scale BESS at Former Service Station Sites~Operations to Begin in Matsuura and Sendai from FY2027, with a Combined Capacity of Approx. 4 MW~
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2026-02-10
IR News SettlementFY2025 3Q Financial Results Explanatory Meeting -Q&A (PDF/118K)
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2026-03-16
Cosmo Energy HoldingsCosmo and Nihon University to Jointly Explore the Development of Bio-Isobutanol Using Non-Food-Competing Feedstocks ~Aiming to Establish an Efficient Process for Producing Second-Generation Alcohol from Sugars~
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2026-03-12
Cosmo Energy Holdings IR EventNotice of Acquisition Results of Treasury Shares and Completion of Share Repurchases (Acquisition of Treasury Shares Pursuant to the Provisions of the Articles of Incorporation Pursuant to Paragraph 3 of Article 165 of the Companies Act)
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2026-03-02
Cosmo Energy Holdings IR EventNotice Regarding Progress on the Stock Repurchase (Repurchases of Shares of the Company’s Own Stock in Accordance with the Provisions of Articles of Incorporation Pursuant to Article 165, Paragraph 2 of the Companies Act)
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2026-02-25
Cosmo Energy Holdings Cosmo Oil MarketingCosmo Commences Construction of High-Voltage, Grid-Scale BESS at Former Service Station Sites~Operations to Begin in Matsuura and Sendai from FY2027, with a Combined Capacity of Approx. 4 MW~
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2026-02-09
Cosmo Energy Holdings Cosmo Oil MarketingCosmo Oil Marketing and Partners Conclude Agreement with Shimonoseki City to Promote the Recycling of Used Cooking Oil into SAF and Other Products ~Collecting Household and Commercial Used Cooking Oil at Municipal Facilities for Use in Domestic SAF Production~
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2026-03-12
IRNotice of Acquisition Results of Treasury Shares and Completion of Share Repurchases (Acquisition of Treasury Shares Pursuant to the Provisions of the Articles of Incorporation Pursuant to Paragraph 3 of Article 165 of the Companies Act)
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2026-03-02
IRNotice Regarding Progress on the Stock Repurchase (Repurchases of Shares of the Company’s Own Stock in Accordance with the Provisions of Articles of Incorporation Pursuant to Article 165, Paragraph 2 of the Companies Act)
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2026-02-10
SettlementFY2025 3Q Financial Results Explanatory Meeting -Q&A (PDF/118K)
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2026-02-10
SettlementArchived Net Conference
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2025-12-26
IRCosmo received Commendation Award in 2025 Internet IR Award by Daiwa Investor Relations Co. Ltd. and “AAA Website” grade in All Japanese Listed Companies' Website Ranking in 2025 by Nikko Investor Relations Co., Ltd.
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2026-03-12
IR EventNotice of Acquisition Results of Treasury Shares and Completion of Share Repurchases (Acquisition of Treasury Shares Pursuant to the Provisions of the Articles of Incorporation Pursuant to Paragraph 3 of Article 165 of the Companies Act)
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2026-03-02
IR EventNotice Regarding Progress on the Stock Repurchase (Repurchases of Shares of the Company’s Own Stock in Accordance with the Provisions of Articles of Incorporation Pursuant to Article 165, Paragraph 2 of the Companies Act)
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2026-02-10
SettlementFY2025 3Q Financial Results Explanatory Meeting -Q&A (PDF/118K)
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2026-02-10
SettlementArchived Net Conference
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2026-02-09
Press ReleaseNotice Regarding the Results of Share Repurchase through off-floor trading on Tokyo Stock Exchange (ToSTNeT-3) (Share Repurchase Pursuant to the Provisions of the Articles of Incorporation Pursuant to Paragraph 2 of Article 165 of the Companies Act)
Company
Striving for an infinite tomorrow,
developing sustainably in harmony
with humanity, society, and our planet.
Our Initiatives
Building a “sustainable and prosperous society” by providing energy that meets today’s needs.
Making great strides toward new forms of “energy” that go beyond petroleum.
