{
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  "company_name": "山陽特殊製鋼",
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  "updated": "2026-08-29",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/5481/executives/",
  "source": {
    "primary": [
      "有価証券報告書（役員の状況）"
    ],
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      "FY": "FY18",
      "樋口眞哉": "代表取締役社長",
      "髙橋幸三": "取締役常務執行役員",
      "大井茂博": "取締役常務執行役員",
      "大前浩三": "取締役常務執行役員東京支社長",
      "柳本勝": "取締役常務執行役員",
      "小林敬": "取締役",
      "大西珠枝": "取締役",
      "升光法行": "取締役",
      "津加宏": "取締役",
      "臼杵政治": null,
      "宮本勝弘": null,
      "藤原佳代": null,
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      "要木洋": null,
      "戸出巌": null,
      "八並敬之": null,
      "堀賀郎": null,
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      "髙橋幸三": "取締役常務執行役員",
      "大井茂博": "取締役常務執行役員",
      "大前浩三": "取締役常務執行役員東京支社長",
      "柳本勝": "取締役常務執行役員",
      "小林敬": "取締役",
      "大西珠枝": "取締役",
      "升光法行": "取締役",
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      "臼杵政治": "取締役",
      "宮本勝弘": null,
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      "八並敬之": null,
      "堀賀郎": null,
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      "髙橋幸三": "取締役常務執行役員",
      "大井茂博": "取締役常務執行役員",
      "大前浩三": "取締役常務執行役員東京支社長",
      "柳本勝": "取締役常務執行役員",
      "小林敬": "取締役",
      "大西珠枝": "取締役",
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      "臼杵政治": "取締役",
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    {
      "FY": "FY21",
      "樋口眞哉": null,
      "髙橋幸三": "取締役常務執行役員",
      "大井茂博": "取締役常務執行役員",
      "大前浩三": "取締役常務執行役員東京支社長",
      "柳本勝": "取締役常務執行役員",
      "小林敬": null,
      "大西珠枝": null,
      "升光法行": null,
      "津加宏": null,
      "臼杵政治": "取締役",
      "宮本勝弘": "代表取締役社長",
      "藤原佳代": "取締役",
      "園田裕人": "取締役",
      "永野和彦": "取締役常任監査等委員",
      "要木洋": "取締役監査等委員",
      "戸出巌": "取締役監査等委員",
      "八並敬之": null,
      "堀賀郎": null,
      "宮口亜希": null
    },
    {
      "FY": "FY22",
      "樋口眞哉": null,
      "髙橋幸三": "取締役常務執行役員",
      "大井茂博": "取締役常務執行役員",
      "大前浩三": "取締役常務執行役員東京支社長",
      "柳本勝": "取締役常務執行役員",
      "小林敬": null,
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      "津加宏": null,
      "臼杵政治": "取締役",
      "宮本勝弘": "代表取締役社長",
      "藤原佳代": "取締役",
      "園田裕人": "取締役",
      "永野和彦": "取締役常任監査等委員",
      "要木洋": "取締役監査等委員",
      "戸出巌": "取締役監査等委員",
      "八並敬之": null,
      "堀賀郎": null,
      "宮口亜希": null
    },
    {
      "FY": "FY23",
      "樋口眞哉": null,
      "髙橋幸三": null,
      "大井茂博": "取締役常務執行役員",
      "大前浩三": "取締役常務執行役員",
      "柳本勝": "取締役常務執行役員",
      "小林敬": null,
      "大西珠枝": null,
      "升光法行": null,
      "津加宏": null,
      "臼杵政治": null,
      "宮本勝弘": "代表取締役社長",
      "藤原佳代": "取締役",
      "園田裕人": "取締役",
      "永野和彦": "取締役常任監査等委員",
      "要木洋": "取締役監査等委員",
      "戸出巌": "取締役",
      "八並敬之": "取締役常務執行役員",
      "堀賀郎": "取締役執行役員東京支社長",
      "宮口亜希": "取締役監査等委員"
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      "name": "八並敬之",
      "sort_index": 0,
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      "description": "新日鐵住金㈱(現 日本製鉄㈱)海外事業企画部長"
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      "name": "八並敬之",
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      "description": "同社グローバル事業推進本部海外事業企画部長"
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      "description": "NIPPON STEEL & SUMITOMO METAL U.S.A., INC.(現 NIPPON STEEL NORTH AMERICA, INC.) 社長"
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    {
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    },
    {
      "name": "八並敬之",
      "sort_index": 5,
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      "description": "山陽特殊製鋼常務執行役員経営企画部長"
    },
    {
      "name": "八並敬之",
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      "description": "Sanyo Special Steel Manufacturing India Pvt. Ltd. CHAIRMAN & DIRECTOR(現任)"
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    {
      "name": "八並敬之",
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      "year_month": "2024-04",
      "description": "山陽特殊製鋼常務執行役員"
    },
    {
      "name": "八並敬之",
      "sort_index": 8,
      "year_month": "2024-06",
      "description": "山陽特殊製鋼取締役常務執行役員(現任)"
    },
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      "sort_index": 0,
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      "description": "新日本製鉄㈱(現 日本製鉄㈱)室蘭製鐵所製鋼工場長(部長)"
    },
    {
      "name": "升光法行",
      "sort_index": 1,
      "year_month": "2001-11",
      "description": "同社棒線事業部室蘭製鐵所製品技術部部長"
    },
    {
      "name": "升光法行",
      "sort_index": 2,
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      "description": "同社棒線事業部室蘭製鐵所副所長"
    },
    {
      "name": "升光法行",
      "sort_index": 3,
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      "description": "同社執行役員棒線事業部室蘭製鐵所長"
    },
    {
      "name": "升光法行",
      "sort_index": 4,
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      "description": "同社執行役員 鈴木金属工業㈱(現 日鉄SGワイヤ㈱)顧問"
    },
    {
      "name": "升光法行",
      "sort_index": 5,
      "year_month": "2011-06",
      "description": "同社代表取締役社長"
    },
    {
      "name": "升光法行",
      "sort_index": 6,
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      "description": "日鉄住金テックスエンジ㈱(現 日鉄テックスエンジ㈱)顧問"
    },
    {
      "name": "升光法行",
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      "description": "同社代表取締役社長"
    },
    {
      "name": "升光法行",
      "sort_index": 8,
      "year_month": "2018-06",
      "description": "同社取締役相談役"
    },
    {
      "name": "升光法行",
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      "description": "日鉄テックスエンジ㈱取締役相談役"
    },
    {
      "name": "升光法行",
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      "year_month": "2019-06",
      "description": "同社相談役 山陽特殊製鋼取締役(現任)"
    },
    {
      "name": "園田裕人",
      "sort_index": 0,
      "year_month": "2019-04",
      "description": "日本製鉄㈱棒線事業部棒線営業部長 日鉄ＳＧワイヤ㈱取締役 日鉄溶接工業㈱取締役 宮崎精鋼㈱監査役 ㈱ＮＳＢＣ代表取締役社長 東海特殊鋼㈱取締役"
    },
    {
      "name": "園田裕人",
      "sort_index": 1,
      "year_month": "2019-06",
      "description": "山陽特殊製鋼監査役"
    },
    {
      "name": "園田裕人",
      "sort_index": 2,
      "year_month": "2020-06",
      "description": "山陽特殊製鋼監査役退任"
    },
    {
      "name": "園田裕人",
      "sort_index": 3,
      "year_month": "2021-04",
      "description": "日本製鉄㈱執行役員棒線事業部長"
    },
    {
      "name": "園田裕人",
      "sort_index": 4,
      "year_month": "2021-06",
      "description": "山陽特殊製鋼監査役"
    },
    {
      "name": "園田裕人",
      "sort_index": 5,
      "year_month": "2021-06",
      "description": "日亜鋼業㈱社外監査役(現任)"
    },
    {
      "name": "園田裕人",
      "sort_index": 6,
      "year_month": "2022-06",
      "description": "山陽特殊製鋼取締役(現任)"
    },
    {
      "name": "園田裕人",
      "sort_index": 7,
      "year_month": "2023-04",
      "description": "日本製鉄㈱執行役員厚板・建材事業部長、棒線事業部長"
    },
    {
      "name": "園田裕人",
      "sort_index": 8,
      "year_month": "2024-04",
      "description": "日本製鉄㈱常務執行役員厚板・建材事業部長、棒線事業部長(現任)"
    },
    {
      "name": "堀賀郎",
      "sort_index": 0,
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      "description": "NIPPON STEEL & SUMITOMO METAL U.S.A., INC.(現 NIPPON STEEL NORTH AMERICA,INC.)シカゴ事務所長"
    },
    {
      "name": "堀賀郎",
      "sort_index": 1,
      "year_month": "2016-06",
      "description": "新日鐵住金㈱(現 日本製鐵㈱)交通産機品事業部製鋼所生産業務部長"
    },
    {
      "name": "堀賀郎",
      "sort_index": 2,
      "year_month": "2019-04",
      "description": "Standard Steel, LLC CEO"
    },
    {
      "name": "堀賀郎",
      "sort_index": 3,
      "year_month": "2023-05",
      "description": "山陽特殊製鋼顧問"
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    {
      "name": "堀賀郎",
      "sort_index": 4,
      "year_month": "2023-06",
      "description": "山陽特殊製鋼執行役員大阪支店長、広島支店長、九州営業所長"
    },
    {
      "name": "堀賀郎",
      "sort_index": 5,
      "year_month": "2024-04",
      "description": "山陽特殊製鋼執行役員東京支社長 寧波山陽特殊鋼製品有限公司董事長(現任)"
    },
    {
      "name": "堀賀郎",
      "sort_index": 6,
      "year_month": "2024-06",
      "description": "山陽特殊製鋼取締役執行役員東京支社長(現任)"
    },
    {
      "name": "大井茂博",
      "sort_index": 0,
      "year_month": "1986-04",
      "description": "山陽特殊製鋼入社"
    },
    {
      "name": "大井茂博",
      "sort_index": 1,
      "year_month": "2010-04",
      "description": "山陽特殊製鋼生産管理部長"
    },
    {
      "name": "大井茂博",
      "sort_index": 2,
      "year_month": "2011-04",
      "description": "山陽特殊製鋼生産企画管理部長"
    },
    {
      "name": "大井茂博",
      "sort_index": 3,
      "year_month": "2011-06",
      "description": "山陽特殊製鋼取締役生産企画管理部長"
    },
    {
      "name": "大井茂博",
      "sort_index": 4,
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      "description": "山陽特殊製鋼取締役製鋼部長"
    },
    {
      "name": "大井茂博",
      "sort_index": 5,
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      "description": "山陽特殊製鋼取締役"
    },
    {
      "name": "大井茂博",
      "sort_index": 6,
      "year_month": "2017-06",
      "description": "山陽特殊製鋼取締役常務執行役員(現任）"
    },
    {
      "name": "大前浩三",
      "sort_index": 0,
      "year_month": "2012-10",
      "description": "新日鐵住金㈱(現 日本製鉄㈱)欧州事務所長"
    },
    {
      "name": "大前浩三",
      "sort_index": 1,
      "year_month": "2013-04",
      "description": "同社経営企画部部長"
    },
    {
      "name": "大前浩三",
      "sort_index": 2,
      "year_month": "2015-04",
      "description": "山陽特殊製鋼参与東京支社副支社長"
    },
    {
      "name": "大前浩三",
      "sort_index": 3,
      "year_month": "2015-06",
      "description": "山陽特殊製鋼取締役東京支社副支社長"
    },
    {
      "name": "大前浩三",
      "sort_index": 4,
      "year_month": "2016-04",
      "description": "山陽特殊製鋼取締役大阪支店長"
    },
    {
      "name": "大前浩三",
      "sort_index": 5,
      "year_month": "2017-04",
      "description": "山陽特殊製鋼取締役 寧波山陽特殊鋼製品有限公司董事長"
    },
    {
      "name": "大前浩三",
      "sort_index": 6,
      "year_month": "2017-06",
      "description": "山陽特殊製鋼取締役常務執行役員"
    },
    {
      "name": "大前浩三",
      "sort_index": 7,
      "year_month": "2018-04",
      "description": "山陽特殊製鋼取締役常務執行役員東京支社長"
    },
    {
      "name": "大前浩三",
      "sort_index": 8,
      "year_month": "2024-04",
      "description": "山陽特殊製鋼取締役常務執行役員(現任)"
    },
    {
      "name": "大西珠枝",
      "sort_index": 0,
      "year_month": "1978-04",
      "description": "文部省入省"
    },
    {
      "name": "大西珠枝",
      "sort_index": 1,
      "year_month": "1999-07",
      "description": "内閣総理大臣官房男女共同参画室長"
    },
    {
      "name": "大西珠枝",
      "sort_index": 2,
      "year_month": "2002-07",
      "description": "岡山県副知事"
    },
    {
      "name": "大西珠枝",
      "sort_index": 3,
      "year_month": "2004-07",
      "description": "文部科学省大臣官房行政改革総括官"
    },
    {
      "name": "大西珠枝",
      "sort_index": 4,
      "year_month": "2005-04",
      "description": "文部科学省大臣官房政策評価審議官"
    },
    {
      "name": "大西珠枝",
      "sort_index": 5,
      "year_month": "2007-07",
      "description": "文化庁文化財部長"
    },
    {
      "name": "大西珠枝",
      "sort_index": 6,
      "year_month": "2008-07",
      "description": "京都大学理事・副学長"
    },
    {
      "name": "大西珠枝",
      "sort_index": 7,
      "year_month": "2014-04",
      "description": "玉川大学芸術学部教授、玉川大学教育博物館長"
    },
    {
      "name": "大西珠枝",
      "sort_index": 8,
      "year_month": "2019-06",
      "description": "山陽特殊製鋼取締役(現任)"
    },
    {
      "name": "宮口亜希",
      "sort_index": 0,
      "year_month": "1989-10",
      "description": "太田昭和監査法人(現 EY新日本有限責任監査法人)入所"
    },
    {
      "name": "宮口亜希",
      "sort_index": 1,
      "year_month": "1993-03",
      "description": "公認会計士登録"
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    {
      "name": "宮口亜希",
      "sort_index": 2,
      "year_month": "1998-10",
      "description": "同監査法人大阪事務所監査部門マネージャー"
    },
    {
      "name": "宮口亜希",
      "sort_index": 3,
      "year_month": "2014-10",
      "description": "同監査法人大阪事務所監査部門シニアマネージャー"
    },
    {
      "name": "宮口亜希",
      "sort_index": 4,
      "year_month": "2024-04",
      "description": "公認会計士宮口亜希事務所所長(現任)"
    },
    {
      "name": "宮口亜希",
      "sort_index": 5,
      "year_month": "2024-06",
      "description": "㈱イチネンホールディングス社外取締役(現任)"
    },
    {
      "name": "宮口亜希",
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      "year_month": "2024-06",
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      "description": "検事任官"
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      "description": "奈良地方検察庁検事正"
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      "name": "小林敬",
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      "year_month": "2007-06",
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      "name": "小林敬",
      "sort_index": 5,
      "year_month": "2008-07",
      "description": "最高検察庁公安部長"
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      "name": "小林敬",
      "sort_index": 6,
      "year_month": "2010-01",
      "description": "大阪地方検察庁検事正"
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      "name": "小林敬",
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      "description": "大阪弁護士会登録 大野・小林法律事務所弁護士(現任)"
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      "name": "小林敬",
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      "description": "積水ハウス㈱社外監査役(現任)"
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      "name": "戸出巌",
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      "description": "三菱商事㈱入社"
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      "name": "戸出巌",
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      "year_month": "2011-04",
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      "description": "同社執行役員鉄鋼製品本部長"
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      "description": "同社執行役員金属グループCEOオフィス室長"
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      "description": "㈱メタルワン代表取締役社長執行役員兼CEO"
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      "name": "戸出巌",
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      "description": "同社顧問"
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      "description": "山陽特殊製鋼取締役技術企画管理部長"
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      "sort_index": 4,
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      "description": "山陽特殊製鋼取締役執行役員技術企画管理部長"
    },
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      "name": "柳本勝",
      "sort_index": 5,
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      "description": "山陽特殊製鋼取締役執行役員インド事業管理室長"
    },
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      "name": "柳本勝",
      "sort_index": 6,
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      "description": "山陽特殊製鋼取締役常務執行役員(現任)"
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      "name": "樋口眞哉",
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      "description": "同社取締役 山陽特殊製鋼顧問"
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      "description": "Ovako Group AB(現 Ovako Midco AB) BOARD MEMBER, CHAIR OF THE BOARD"
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      "name": "樋口眞哉",
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      "description": "Triako Holdco AB(現 Ovako Group AB) BOARD MEMBER, CHAIR OF THE BOARD"
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      "description": "山陽特殊製鋼取締役相談役(現任)"
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    },
    {
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      "year_month": "2013-06",
      "description": "山陽特殊製鋼取締役総務部長"
    },
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      "sort_index": 4,
      "year_month": "2015-04",
      "description": "山陽特殊製鋼取締役人事・労政部長"
    },
    {
      "name": "永野和彦",
      "sort_index": 5,
      "year_month": "2016-04",
      "description": "山陽特殊製鋼取締役 サントク保障サービス㈱(現 山特工業㈱)代表取締役社長"
    },
    {
      "name": "永野和彦",
      "sort_index": 6,
      "year_month": "2016-06",
      "description": "山陽特殊製鋼常務取締役"
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      "name": "永野和彦",
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      "year_month": "2017-06",
      "description": "山陽特殊製鋼取締役常務執行役員"
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      "year_month": "2019-04",
      "description": "山陽特殊製鋼取締役"
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      "sort_index": 9,
      "year_month": "2019-06",
      "description": "山陽特殊製鋼常任監査役(常勤)"
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    {
      "name": "永野和彦",
      "sort_index": 10,
      "year_month": "2022-06",
      "description": "山陽特殊製鋼取締役常任監査等委員(現任)"
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      "description": "新日鐵住金㈱(現 日本製鉄㈱)和歌山製鐵所総務部長"
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      "description": "同社大分製鐵所総務部長"
    },
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      "year_month": "2016-04",
      "description": "同社関係会社部長 ㈱鹿島アントラーズエフ・シー監査役(現任)"
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      "description": "㈱長銀総合研究所出向"
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      "name": "臼杵政治",
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      "description": "㈱ニッセイ基礎研究所入社"
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      "name": "臼杵政治",
      "sort_index": 3,
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      "description": "国際大学大学院国際経営学研究科 非常勤講師"
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      "description": "専修大学大学院経済学研究科客員 教授"
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      "name": "臼杵政治",
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      "description": "早稲田大学大学院ファイナンス研究科非常勤講師"
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      "description": "公立大学法人名古屋市立大学大学院経済学研究科教授"
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      "description": "三井物産㈱入社"
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      "description": "ICI Australia Ltd入社"
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      "description": "日本石油㈱(現 ENEOS㈱)入社"
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      "description": "新日本石油㈱(現 ENEOS㈱)海外調達部副部長"
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      "description": "JX日鉱日石エネルギー㈱(現 ENEOS㈱)システムインテグレート事業部システムインテグレート部部長"
    },
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      "name": "藤原佳代",
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      "year_month": "2014-04",
      "description": "JX Nippon Oil ＆ Energy Asia Pte.Ltd. Managing Director"
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      "name": "藤原佳代",
      "sort_index": 6,
      "year_month": "2018-04",
      "description": "JXTGエネルギー㈱(現 ENEOS㈱)執行役員原油外航部長"
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      "name": "藤原佳代",
      "sort_index": 7,
      "year_month": "2021-04",
      "description": "ENEOSオーシャン㈱取締役常務執行役員(現任)"
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      "year_month": "2022-06",
      "description": "山陽特殊製鋼取締役(現任)"
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      "description": "三井住友銀行(中国)有限公司取締役副社長"
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      "role": "取締役執行役員東京支社長",
      "first_career": "NIPPON STEEL & SUMITOMO METAL U.S.A., INC.(現 NIPPON STEEL NORTH AMERICA,INC.)シカゴ事務所長",
      "shares_held": 200,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "大井茂博",
      "as_of": "2024-06",
      "birthdate": "1961-08-28",
      "role": "取締役常務執行役員",
      "first_career": "山陽特殊製鋼入社",
      "shares_held": 33500,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "大前浩三",
      "as_of": "2024-06",
      "birthdate": "1961-03-29",
      "role": "取締役常務執行役員",
      "first_career": "新日鐵住金㈱(現 日本製鉄㈱)欧州事務所長",
      "shares_held": 15700,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "大西珠枝",
      "as_of": "2021-06",
      "birthdate": "1954-08-14",
      "role": "取締役",
      "first_career": "文部省入省",
      "shares_held": 700,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "宮口亜希",
      "as_of": "2024-06",
      "birthdate": "1967-01-19",
      "role": "取締役監査等委員",
      "first_career": "太田昭和監査法人(現 EY新日本有限責任監査法人)入所",
      "shares_held": null,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "宮本勝弘",
      "as_of": "2024-06",
      "birthdate": "1956-10-22",
      "role": "代表取締役社長",
      "first_career": "新日鐵住金㈱(現 日本製鉄㈱)代表取締役副社長",
      "shares_held": 7900,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "小林敬",
      "as_of": "2021-06",
      "birthdate": "1951-03-23",
      "role": "取締役",
      "first_career": "検事任官",
      "shares_held": 2500,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "戸出巌",
      "as_of": "2024-06",
      "birthdate": "1958-10-18",
      "role": "取締役",
      "first_career": "三菱商事㈱入社",
      "shares_held": 700,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "柳本勝",
      "as_of": "2024-06",
      "birthdate": "1961-07-26",
      "role": "取締役常務執行役員",
      "first_career": "山陽特殊製鋼入社",
      "shares_held": 22100,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "樋口眞哉",
      "as_of": "2021-06",
      "birthdate": "1953-11-12",
      "role": "取締役相談役",
      "first_career": "新日本製鐵㈱(現 日本製鉄㈱)代表取締役副社長",
      "shares_held": 27400,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "永野和彦",
      "as_of": "2024-06",
      "birthdate": "1957-10-02",
      "role": "取締役常任監査等委員",
      "first_career": "山陽特殊製鋼入社",
      "shares_held": 20000,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "津加宏",
      "as_of": "2019-06",
      "birthdate": "1962-11-05",
      "role": "取締役",
      "first_career": "新日鐵住金㈱(現 日本製鉄㈱)和歌山製鐵所総務部長",
      "shares_held": null,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "臼杵政治",
      "as_of": "2023-06",
      "birthdate": "1958-01-04",
      "role": "取締役",
      "first_career": "㈱日本長期信用銀行(現  ㈱新生銀行)入行",
      "shares_held": 700,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "藤原佳代",
      "as_of": "2024-06",
      "birthdate": "1962-05-27",
      "role": "取締役",
      "first_career": "三井物産㈱入社",
      "shares_held": 700,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "要木洋",
      "as_of": "2024-06",
      "birthdate": "1963-06-13",
      "role": "取締役監査等委員",
      "first_career": "三井住友銀行(中国)有限公司取締役副社長",
      "shares_held": 8700,
      "romaji": null,
      "specialty": null,
      "retired_at": null
    },
    {
      "name": "髙橋幸三",
      "as_of": "2023-06",
      "birthdate": "1959-03-06",
      "role": "取締役常務執行役員",
      "first_career": "新日鐵住金㈱(現 日本製鉄㈱)内部統制・監査部部長 兼 財務部上席主幹",
      "shares_held": 19600,
      "romaji": null,
      "specialty": null,
      "retired_at": null
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  ]
}