{ "spec_version": "4", "endpoint": "ceo", "stock_code": "5463", "company_name": "丸一鋼管", "content_lang": "ja", "meta_lang": "en", "canonical_url": "https://the-shashi.com/tse/5463/ceo/", "api_url": "/api/5463/ceo.json", "updated": "2026-09-26", "license": "© 2026 Yutaka Sugiura. All rights reserved.", "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/5463/ceo/", "source": { "ceo": { "primary": [ "有価証券報告書（役員の状況）" ], "extraction": "EDINET の XBRL から機械抽出した役員表を土台に、雑誌記事・社史・報道で経歴と出自を補完", "caveat": "在任区間は career の is_ceo_appointed が正本。退任年月は次の代の就任年月から決まる" } }, "count": 4, "ceo": [ { "slug": "yoshimura-seiji", "name": "吉村精仁", "kana": "よしむら　せいじ", "hometown": null, "education": null, "prev_role": null, "career": [ { "company": "丸一鋼管", "from": "1948-03", "to": "2013-06", "roles": [ { "date": "1948-03", "role": "入社" }, { "date": "1948-04", "role": "取締役就任" }, { "date": "1950-04", "role": "取締役副社長就任" }, { "date": "1965-05", "role": "代表取締役社長就任", "is_ceo_appointed": true }, { "date": "2003-04", "role": "代表取締役会長就任" }, { "date": "2003-04", "role": "社長退任（次期社長登用による推定）", "is_ceo_retired": true, "retirement_basis": "next_ceo" } ] }, { "company": "丸一鋼販㈱", "from": "2003-09", "to": null, "roles": [ { "date": "2003-09", "role": "代表取締役会長就任" } ] }, { "company": "沖縄丸一鋼管㈱", "from": "2003-09", "to": null, "roles": [ { "date": "2003-09", "role": "代表取締役会長就任" } ] }, { "company": "マルイチ・アメリカン・コーポレーション", "from": "2003-09", "to": null, "roles": [ { "date": "2003-09", "role": "会長就任" } ] } ], "sections": { "tenure_summary": null, "management_policy": null, "initiatives": null }, "html_url": "https://the-shashi.com/tse/5463/executives/ceo/yoshimura-seiji/", "term_start": "1965-05", "term_end": "2003-04" }, { "slug": "suzuki-hiroyuki", "name": "鈴木博之", "kana": "すずき　ひろゆき", "hometown": null, "education": null, "prev_role": null, "career": [ { "company": "丸一鋼管", "from": "1980-08", "to": null, "roles": [ { "date": "1980-08", "role": "入社" }, { "date": "1981-01", "role": "アメリカ事務所長就任" }, { "date": "1983-06", "role": "取締役就任" }, { "date": "1990-06", "role": "常務取締役就任" }, { "date": "1997-06", "role": "専務取締役就任" }, { "date": "1999-06", "role": "代表取締役副社長就任" }, { "date": "2003-04", "role": "代表取締役社長就任", "is_ceo_appointed": true }, { "date": "2003-06", "role": "社長執行役員就任" }, { "date": "2013-06", "role": "代表取締役会長兼CEO就任" }, { "date": "2013-06", "role": "社長退任（次期社長登用による推定）", "is_ceo_retired": true, "retirement_basis": "next_ceo" } ] }, { "company": "丸一鋼販㈱", "from": "2009-04", "to": null, "roles": [ { "date": "2009-04", "role": "代表取締役社長就任" } ] }, { "company": "SUNSCO社", "from": "2011-04", "to": null, "roles": [ { "date": "2011-04", "role": "会長就任" } ] }, { "company": "九州丸一鋼管㈱", "from": "2015-04", "to": null, "roles": [ { "date": "2015-04", "role": "代表取締役社長就任" } ] }, { "company": "一般社団法人関西経済同友会", "from": "2016-05", "to": null, "roles": [ { "date": "2016-05", "role": "代表幹事就任" } ] }, { "company": "日本ベンチャーキャピタル㈱", "from": "2019-06", "to": null, "roles": [ { "date": "2019-06", "role": "社外取締役就任" } ] }, { "company": "丸一ステンレス鋼管㈱", "from": "2020-04", "to": null, "roles": [ { "date": "2020-04", "role": "取締役会長就任" } ] }, { "company": "岩谷産業㈱", "from": "2022-06", "to": null, "roles": [ { "date": "2022-06", "role": "社外取締役就任" } ] }, { "company": "MST-X社", "from": "2023-10", "to": null, "roles": [ { "date": "2023-10", "role": "会長就任" } ] } ], "sections": { "tenure_summary": null, "management_policy": null, "initiatives": null }, "html_url": "https://the-shashi.com/tse/5463/executives/ceo/suzuki-hiroyuki/", "term_start": "2003-04", "term_end": "2013-06" }, { "slug": "yoshimura-yoshinori", "name": "吉村貴典", "kana": "よしむら　よしのり", "hometown": null, "education": null, "prev_role": null, "career": [ { "company": "丸一鋼管", "from": "1981-03", "to": null, "roles": [ { "date": "1981-03", "role": "入社" }, { "date": "1997-06", "role": "取締役就任" }, { "date": "2003-06", "role": "取締役退任" }, { "date": "2003-06", "role": "執行役員特品事業部長就任" }, { "date": "2005-06", "role": "取締役兼常務執行役員就任" }, { "date": "2008-06", "role": "取締役兼専務執行役員就任" } ] }, { "company": "四国丸一鋼管㈱", "from": "2009-04", "to": null, "roles": [ { "date": "2009-04", "role": "代表取締役社長就任" } ] }, { "company": "丸一鋼管", "from": "2011-06", "to": null, "roles": [ { "date": "2011-06", "role": "代表取締役副社長執行役員就任" }, { "date": "2013-06", "role": "代表取締役社長兼COO就任", "is_ceo_appointed": true }, { "date": "2026-06", "role": "取締役副会長執行役員就任" }, { "date": "2026-06", "role": "社長退任（次期社長登用による推定）", "is_ceo_retired": true, "retirement_basis": "next_ceo" } ] } ], "sections": { "tenure_summary": null, "management_policy": null, "initiatives": null }, "html_url": "https://the-shashi.com/tse/5463/executives/ceo/yoshimura-yoshinori/", "term_start": "2013-06", "term_end": "2026-06" }, { "slug": "morita-wataru", "name": "森田渉", "kana": "もりた　わたる", "hometown": null, "education": null, "prev_role": null, "career": [ { "company": "日商岩井㈱", "from": "1991-04", "to": null, "roles": [ { "date": "1991-04", "role": "入社" } ] }, { "company": "丸一鋼管", "from": "2011-06", "to": null, "roles": [ { "date": "2011-06", "role": "入社" }, { "date": "2018-06", "role": "執行役員就任" }, { "date": "2021-06", "role": "執行役員企画・秘書部門管掌 経営企画室長就任" }, { "date": "2022-06", "role": "取締役常務執行役員企画・秘書部門管掌 経営企画室長就任" }, { "date": "2023-06", "role": "取締役副社長執行役員営業・購買・企画・IR・秘書部門管掌就任" }, { "date": 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