{"id":111857,"date":"2026-09-09T16:12:10","date_gmt":"2026-09-09T07:12:10","guid":{"rendered":"https:\/\/japanir.jp\/en\/ir\/4599-20260909-03_wp_executive_change\/"},"modified":"2026-09-09T16:12:10","modified_gmt":"2026-09-09T07:12:10","slug":"4599-20260909-03_wp_executive_change","status":"publish","type":"ir_release","link":"https:\/\/japanir.jp\/en\/company\/company-4599\/ir\/4599-20260909-03_wp_executive_change\/","title":{"rendered":"Notice Regarding Change of Representative Director (Increased Number of Directors)"},"content":{"rendered":"<p>Appoints the current CSO Katsuto Tamai as the representative director (CEO) and shifts to a two-person system with Obaoka Masatsune as co-leader. Discloses the new representative director\u2019s biography and remarks on appointment.<\/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":"4599","jir_company_name":"Stemrim","jir_importance":"\u2605\u2605\u2605\u2605\u2606","jir_publication_date":"2026-09-09","jir_source_link":"https:\/\/japanir.jp\/wp-content\/uploads\/2026\/09\/4599-20260909-03.pdf","jir_short_summary":"Appoints the current CSO Katsuto Tamai as the representative director (CEO) and shifts to a two-person system with Obaoka Masatsune as co-leader. Discloses the new representative director\u2019s biography and remarks on appointment.","jir_summary":"### Overview of the New Structure\nAs announced today by the board of directors, the company will transition to a two-person leadership with President and CEO Masatsune Obaoka and newly appointed Representative Director, Chairman and CSO Katsuto Tamai. This introduces a co-CEO structure to accelerate decision-making and strengthen the management foundation. Tamai will intensify his involvement as a founder and reinforce commitment to regenerative medicine R&D.\n\n### Biography and Remarks of the New Representative Director\nKatsuto Tamai, born in 1960, has a long research and education career at Hirosaki University and Osaka University. Since 2012 he has served as CSO (current) on the company\u2019s board, and since 2023 also served as invited professor at Osaka University. In appointing Tamai, he notes that his track record leading regenerative medicine R&D will accelerate drug discovery related to epidermolysis bullosa.","jir_financial_highlights":"Unknown: Unknown (Unknown)","jir_category":"","jir_hashtags":"#StemRimManagement, #ExecutiveChanges","jir_key_figures":"Name of the new Representative Director: Katsuto Tamai\nEffective date: 2026-09-09\nOld title: Representative Director and CEO \u2192 New title: Representative Director, Chairman and CSO","jir_meta_title":"[StemRim] Announcement of Representative Director Changes | September 9, 2026","jir_meta_description":"StemRim, which develops regenerative medicine for epidermolysis bullosa, announces changes to the representative director and transition to a co-CEO structure. Includes biography and remarks of the new representative director.","jir_og_title":"StemRim Announces Change in Representative Director | September 9, 2026","jir_og_description":"Publicizing the strengthened leadership structure through a co-CEO model and the biography of the new representative director. Aims to accelerate regenerative medicine development.","jir_og_image_url":"\/assets\/og\/company-general_ir.jpg","jir_chart_data_collection":"[]","ir_related_company":58113,"ir_release_date":"","ir_type":"","ir_is_new":false,"ir_document_url":"","jir_ir_type":"executive_change","footnotes":""},"sector":[],"importance":[],"class_list":["post-111857","ir_release","type-ir_release","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Notice Regarding Change of Representative Director (Increased Number of Directors) - Japan IR<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/japanir.jp\/en\/company\/company-4599\/ir\/4599-20260909-03_wp_executive_change\/\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/japanir.jp\/en\/company\/company-4599\/ir\/4599-20260909-03_wp_executive_change\/\",\"url\":\"https:\/\/japanir.jp\/en\/company\/company-4599\/ir\/4599-20260909-03_wp_executive_change\/\",\"name\":\"Notice Regarding Change of Representative Director (Increased Number of Directors) - 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