{
  "spec_version": "4",
  "endpoint": "ceo",
  "stock_code": "1515",
  "company_name": "日鉄鉱業",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/1515/ceo/",
  "api_url": "/api/1515/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/1515/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": 5,
  "ceo": [
    {
      "slug": "高橋三郎",
      "name": "高橋三郎",
      "kana": null,
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "日鉄鉱業",
          "from": "1959-04",
          "to": null,
          "roles": [
            {
              "date": "1959-04",
              "role": "入社"
            },
            {
              "date": "1991-06",
              "role": "本社人事部長、法務部長"
            },
            {
              "date": "1993-06",
              "role": "取締役人事部、法務部担当、情報システム部長"
            },
            {
              "date": "1994-02",
              "role": "取締役人事部、法務部担当、情報システム部長、開発管理部長"
            },
            {
              "date": "1995-01",
              "role": "取締役人事部、法務部担当、情報システム部長"
            },
            {
              "date": "1995-06",
              "role": "取締役秘書室、経営企画部、人事部、法務部担当"
            },
            {
              "date": "1997-06",
              "role": "常務取締役秘書室、経営企画部、総務部、人事部、法務部、不動産事業部管掌"
            },
            {
              "date": "1999-04",
              "role": "常務取締役秘書室、経営企画部、総務部、人事部管掌"
            },
            {
              "date": "1999-06",
              "role": "専務取締役社務一般統轄"
            },
            {
              "date": "2001-04",
              "role": "代表取締役社長",
              "is_ceo_appointed": true
            }
          ]
        }
      ],
      "term_start": "2001-04",
      "term_end": "2007-04"
    },
    {
      "slug": "松本六朗",
      "name": "松本六朗",
      "kana": null,
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "日鉄鉱業",
          "from": "1970-04",
          "to": null,
          "roles": [
            {
              "date": "1970-04",
              "role": "入社"
            },
            {
              "date": "1999-04",
              "role": "本社人事部長、情報システム部長"
            },
            {
              "date": "1999-06",
              "role": "取締役経営企画部担当、人事部長"
            },
            {
              "date": "2001-04",
              "role": "取締役秘書室、経営企画部、総務部担当、人事部長"
            },
            {
              "date": "2001-06",
              "role": "取締役秘書室、総務部、人事部担当、経営企画部長"
            },
            {
              "date": "2003-04",
              "role": "取締役総務部、人事部担当、社長室長"
            },
            {
              "date": "2003-06",
              "role": "常務取締役管理部門、営業部門管掌、社長室長"
            },
            {
              "date": "2005-04",
              "role": "常務取締役管理部門、営業部門管掌"
            },
            {
              "date": "2005-06",
              "role": "アタカマ・コーザン鉱山特約会社取締役社長"
            },
            {
              "date": "2005-06",
              "role": "取締役副社長社務一般統轄"
            },
            {
              "date": "2007-04",
              "role": "代表取締役社長",
              "is_ceo_appointed": true
            }
          ]
        }
      ],
      "term_start": "2007-04",
      "term_end": "2015-04"
    },
    {
      "slug": "sato-kimio",
      "name": "佐藤公生",
      "kana": "さとう　きみお",
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "日鉄鉱業",
          "from": "1981-04",
          "to": null,
          "roles": [
            {
              "date": "1981-04",
              "role": "入社"
            },
            {
              "date": "2007-06",
              "role": "九州支店長"
            },
            {
              "date": "2010-06",
              "role": "本社資源営業部長"
            },
            {
              "date": "2011-06",
              "role": "取締役金属営業部担当、資源営業部長"
            },
            {
              "date": "2012-06",
              "role": "常務取締役経理部、資源営業部、金属営業部管掌"
            },
            {
              "date": "2012-07",
              "role": "常務取締役経理部、資源営業部、金属営業部、ＢＣＭ推進室管掌"
            },
            {
              "date": "2013-06",
              "role": "取締役副社長社務一般統轄"
            },
            {
              "date": "2015-04",
              "role": "代表取締役社長",
              "is_ceo_appointed": true
            }
          ]
        }
      ],
      "sections": {
        "tenure_summary": null,
        "management_policy": null,
        "initiatives": null
      },
      "html_url": "https://the-shashi.com/tse/1515/executives/ceo/sato-kimio/",
      "term_start": "2015-04",
      "term_end": "2019-05"
    },
    {
      "slug": "koyama-hiroshi",
      "name": "小山博司",
      "kana": "こやま　ひろし",
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "日鉄鉱業",
          "from": "1981-04",
          "to": null,
          "roles": [
            {
              "date": "1981-04",
              "role": "入社"
            },
            {
              "date": "2007-06",
              "role": "本社総務部長"
            },
            {
              "date": "2011-06",
              "role": "執行役員経理部長"
            },
            {
              "date": "2013-06",
              "role": "取締役総務部、経理部担当"
            },
            {
              "date": "2015-04",
              "role": "取締役総務部、経理部、ＢＣＭ推進室担当"
            },
            {
              "date": "2017-06",
              "role": "常務取締役総務部、経理部、ＢＣＭ推進室管掌"
            },
            {
              "date": "2019-05",
              "role": "代表取締役社長",
              "is_ceo_appointed": true
            }
          ]
        }
      ],
      "sections": {
        "tenure_summary": null,
        "management_policy": null,
        "initiatives": null
      },
      "html_url": "https://the-shashi.com/tse/1515/executives/ceo/koyama-hiroshi/",
      "term_start": "2019-05",
      "term_end": "2021-04"
    },
    {
      "slug": "morikawa-reiichi",
      "name": "森川玲一",
      "kana": "もりかわ　れいいち",
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "日鉄鉱業",
          "from": "1986-04",
          "to": null,
          "roles": [
            {
              "date": "1986-04",
              "role": "入社"
            },
            {
              "date": "2012-06",
              "role": "本社資源営業部長"
            },
            {
              "date": "2015-06",
              "role": "執行役員資源営業部長"
            },
            {
              "date": "2017-04",
              "role": "アタカマ・コーザン鉱山特約会社取締役社長"
            },
            {
              "date": "2017-06",
              "role": "取締役金属営業部担当、資源営業部長"
            },
            {
              "date": "2017-10",
              "role": "取締役資源営業部、金属営業部担当"
            },
            {
              "date": "2019-06",
              "role": "常務取締役資源営業部、金属営業部管掌"
            },
            {
              "date": "2021-04",
              "role": "代表取締役社長",
              "is_ceo_appointed": true
            }
          ]
        }
      ],
      "sections": {
        "tenure_summary": null,
        "management_policy": null,
        "initiatives": null
      },
      "html_url": "https://the-shashi.com/tse/1515/executives/ceo/morikawa-reiichi/",
      "term_start": "2021-04",
      "term_end": null
    }
  ]
}