Idemitsu Kosan acquired 8,557,900 shares through market purchase in May 2026, totaling 11,626,064,650 yen, and has acquired a cumulative total of 17,631,900 shares, amounting to 24,872,552,100 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Ltd.","jir_importance":"\u2605\u2605\u2605\u2606\u2606","jir_publication_date":"2026-06-01","jir_source_link":"https:\/\/japanir.jp\/wp-content\/uploads\/2026\/06\/5019-20260601-01.pdf","jir_short_summary":"Idemitsu Kosan acquired 8,557,900 shares through market purchase in May 2026, totaling 11,626,064,650 yen, and has acquired a cumulative total of 17,631,900 shares, amounting to 24,872,552,100 yen.","jir_summary":"### Overview of Capital Policy\nIdemitsu Kosan acquired 8,557,900 shares of treasury stock through market purchase in May 2026, spending a total of 11,626,064,650 yen. As a result, the total acquired shares since November 2025 amount to 17,631,900, with a total cost of 24,872,552,100 yen. The purpose of this acquisition is to enhance shareholder returns and improve capital efficiency, and the company is committed to further increasing shareholder value.\n\n### Impact on Shareholders and Future Outlook\nThe implementation of the share buyback will reduce the number of issued shares of Idemitsu Kosan, potentially increasing the value per share. The company may continue to acquire treasury stock as part of its capital policy, maintaining an approach focused on shareholder return. The timing of future share acquisitions will be appropriately determined based on market conditions and the company's financial situation.","jir_financial_highlights":"Total number of shares acquired: 8,557,900 shares (Acquired in May 2026)\nTotal number of shares acquired (cumulative): 17,631,900 shares (Cumulative)\nTotal amount of acquisition cost: 11,626,064,650 yen (For May 2026 acquisition)","jir_category":"","jir_hashtags":"#IdemitsuKosan, #ShareBuyback, #JapanStocks","jir_key_figures":"Total shares acquired: 8,557,900 shares (as of May 2026)\nCumulative acquired shares: 17,631,900 shares (Nov 2025 \u2013 May 2026)\nTotal acquisition cost: 11,626,064,650 yen (as of May 2026)","jir_meta_title":"\u3010Idemitsu Kosan\u3011Share Buyback Status | May 2026","jir_meta_description":"Idemitsu Kosan acquired 8,557,900 shares through market purchase in May 2026, totaling 17,631,900 shares and 24,872,552,100 yen in share buybacks. Strengthening shareholder returns.","jir_og_title":"\u3010Idemitsu Kosan\u3011Share Buyback Status | May 2026","jir_og_description":"Idemitsu Kosan has acquired treasury stock in May 2026, promoting shareholder return and capital efficiency improvements. The total acquired shares amount to 17,631,900 shares.","jir_og_image_url":"\/assets\/og\/company-general_ir.jpg","jir_chart_data_collection":"[]","ir_related_company":7436,"ir_release_date":"","ir_type":"","ir_is_new":false,"ir_document_url":"","jir_ir_type":"share_buyback","footnotes":""},"sector":[],"importance":[],"class_list":["post-56084","ir_release","type-ir_release","status-publish","hentry"],"yoast_head":"\n