Idemitsu Kosan announced that it will acquire 3,761,100 shares of treasury stock (equivalent to approximately 510 million yen) through open market purchases from June 1 to 10, 2026, and plans to cancel 21,393,000 shares (1.7% of outstanding shares) on March 31, 2027.<\/p>\n","protected":false},"comment_status":"open","ping_status":"closed","template":"","meta":{"Ticker":"","DATE":"","longName":"","company_name_ja":"","fullTimeEmployees":0,"address":"","phone":"","website":"","industry":"","sector":"","regularMarketPrice":0,"financialCurrency":"","marketCap":0,"fiftyTwoWeekLow":0,"fiftyTwoWeekHigh":0,"epsTrailingTwelveMonths":0,"epsForward":0,"bookValue":0,"totalRevenue":0,"OperatingIncome":0,"operatingMargins":0,"NetIncome":0,"profitMargins":0,"ebitda":0,"trailingPE":0,"forwardPE":0,"priceToBook":0,"returnOnEquity":0,"recommendationMean":0,"recommendationKey":"","targetMeanPrice":0,"numberOfAnalystOpinions":0,"analyst_earnings_data":"","dividendRate":0,"dividendYield":0,"payoutRatio":0,"totalEsg":0,"environmentScore":0,"socialScore":0,"governanceScore":0,"title":"","providerPublishTime":"","link":"","longBusinessSummary":"","longBusinessSummary_ja":"","quarterly_revenue":0,"quarterly_net_income":0,"quarterly_operating_profit":0,"enterprise_value":0,"company_officer_1_name":"","company_officer_1_title":"","company_officer_2_name":"","company_officer_2_title":"","company_officer_3_name":"","company_officer_3_title":"","company_officer_4_name":"","company_officer_4_title":"","company_officer_5_name":"","company_officer_5_title":"","company_officers_update_time":"","get_dividend_history_year1":0,"get_dividend_history_year2":0,"get_dividend_history_year3":0,"get_dividend_history_year4":0,"get_dividend_history_year5":0,"get_dividend_history_year6":0,"get_dividend_history_year7":0,"get_dividend_history_year8":0,"get_dividend_history_year9":0,"get_dividend_history_year10":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"jir_stock_code":"5019","jir_company_name":"Idemitsu Kosan Co., Ltd.","jir_importance":"\u2605\u2605\u2605\u2605\u2606","jir_publication_date":"2026-06-11","jir_source_link":"https:\/\/japanir.jp\/wp-content\/uploads\/2026\/06\/5019-20260611-01.pdf","jir_short_summary":"Idemitsu Kosan announced that it will acquire 3,761,100 shares of treasury stock (equivalent to approximately 510 million yen) through open market purchases from June 1 to 10, 2026, and plans to cancel 21,393,000 shares (1.7% of outstanding shares) on March 31, 2027.","jir_summary":"### Overview of Capital Policy\nIdemitsu Kosan decided to acquire 3,761,100 shares of treasury stock (approximately 510 million yen) through open market purchases in June 2026, and to cancel 21,393,000 shares (1.7% of outstanding shares) on March 31, 2027. This is aimed at enhancing shareholder returns and improving capital efficiency. The acquisition period is from June 1 to 10, 2026, via open market purchase. The cancellation will be implemented as scheduled, resulting in a total issued share count of 1,201,824,590 shares.\n\n### Impact on Shareholders and Future Outlook\nThe share buyback and cancellation are expected to reduce the number of outstanding shares and further enhance shareholder returns. The cancellation ratio is 1.7%, which contributes to preventing dilution. It is presumed that the company will continue to pursue policies to improve shareholder value through capital policy. Although detailed earnings forecasts and dividend policies are not included in this material, improved capital efficiency is anticipated to have a positive effect on the stock price.","jir_financial_highlights":"Number of Shares of Treasury Stock Acquired: 21,393,000 shares (Acquisition period: March 18 \u2013 June 10, 2026)\nTotal Shares Acquired: 3,761,100 shares (Period: June 1 \u2013 10, 2026)\nNumber of Shares to be Cancelled: 21,393,000 shares (Scheduled date: March 31, 2027)","jir_category":"","jir_hashtags":"#IdemitsuKosan, #ShareBuyback, #CapitalPolicy, #JapaneseStocks","jir_key_figures":"Share of treasury stock acquired: 3,761,100 shares (approximately 510 million yen)\nTotal shares of treasury stock acquired: 21,393,000 shares (scheduled for cancellation)\nTotal number of outstanding shares (after cancellation): 1,201,824,590 shares","jir_meta_title":"\u3010Idemitsu Kosan\u3011Share Buyback and Cancellation | June 2026","jir_meta_description":"Idemitsu Kosan announced the acquisition of treasury stock in June 2026 and plans to cancel shares in March 2027. A significant capital policy aimed at shareholder returns and enhancing capital efficiency.","jir_og_title":"\u3010Idemitsu Kosan\u3011Share Buyback and Cancellation | June 2026","jir_og_description":"Idemitsu Kosan has carried out share buyback and cancellation. Announcing an important capital policy focused on shareholder returns and improving capital efficiency.","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-63081","ir_release","type-ir_release","status-publish","hentry"],"yoast_head":"\n