{
  "spec_version": "4",
  "endpoint": "ceo",
  "stock_code": "4099",
  "company_name": "四国化成ホールディングス",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/4099/ceo/",
  "api_url": "/api/4099/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/4099/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": 6,
  "ceo": [
    {
      "slug": "山下矩仁彦",
      "name": "山下矩仁彦",
      "kana": null,
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "日本ハム",
          "from": "1964-04",
          "to": "1969-07",
          "roles": [
            {
              "date": "1964-04",
              "role": "入社"
            }
          ]
        },
        {
          "company": "四国化成",
          "from": "1969-07",
          "to": null,
          "roles": [
            {
              "date": "1969-07",
              "role": "入社"
            },
            {
              "date": "1987-03",
              "role": "四国化成海外事業部長"
            },
            {
              "date": "1987-06",
              "role": "四国化成取締役"
            },
            {
              "date": "1990-06",
              "role": "四国化成常務取締役"
            },
            {
              "date": "1995-06",
              "role": "四国化成専務取締役"
            },
            {
              "date": "1998-06",
              "role": "四国化成取締役副社長"
            },
            {
              "date": "1999-06",
              "role": "四国化成代表取締役社長",
              "is_ceo_appointed": true
            },
            {
              "date": "2005-06",
              "role": "四国化成代表取締役会長兼Ｃ.Ｅ.Ｏ."
            },
            {
              "date": "2016-06",
              "role": "四国化成取締役相談役"
            }
          ]
        },
        {
          "company": "日本硫炭工業",
          "from": "2007-06",
          "to": null,
          "roles": [
            {
              "date": "2007-06",
              "role": "代表取締役会長"
            }
          ]
        }
      ],
      "term_start": "1999-06",
      "term_end": "2005-06"
    },
    {
      "slug": "吉岡隆",
      "name": "吉岡隆",
      "kana": null,
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "四国化成",
          "from": "1978-04",
          "to": null,
          "roles": [
            {
              "date": "1978-04",
              "role": "入社"
            },
            {
              "date": "1997-04",
              "role": "四国化成電子化学材料チームリーダー"
            },
            {
              "date": "2002-06",
              "role": "四国化成研究センター所長"
            },
            {
              "date": "2003-06",
              "role": "四国化成執行役員研究・開発担当"
            },
            {
              "date": "2004-06",
              "role": "四国化成取締役執行役員研究・開発担当"
            },
            {
              "date": "2005-06",
              "role": "四国化成代表取締役社長兼Ｃ.Ｏ.Ｏ.",
              "is_ceo_appointed": true
            },
            {
              "date": "2007-06",
              "role": "四国化成代表取締役社長兼Ｃ.Ｏ.Ｏ.兼化学品研究・開発担当"
            },
            {
              "date": "2009-03",
              "role": "四国化成代表取締役社長兼Ｃ.Ｏ.Ｏ.兼化学品研究・開発担当兼建材開発担当"
            },
            {
              "date": "2010-06",
              "role": "四国化成取締役Ｃ.Ｒ＆Ｄ.Ｏ.兼化学品研究・開発担当兼建材開発担当"
            },
            {
              "date": "2013-03",
              "role": "四国化成取締役専務執行役員化学品研究・開発担当"
            },
            {
              "date": "2019-03",
              "role": "四国化成取締役専務執行役員化学品研究・開発本部長"
            }
          ]
        }
      ],
      "term_start": "2005-06",
      "term_end": "2010-06"
    },
    {
      "slug": "tanabe-hiroomi",
      "name": "田邊博臣",
      "kana": "たなべ　ひろおみ",
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "四国化成",
          "from": "1978-04",
          "to": null,
          "roles": [
            {
              "date": "1978-04",
              "role": "入社"
            },
            {
              "date": "1996-03",
              "role": "四国化成海外営業部長"
            },
            {
              "date": "2002-06",
              "role": "四国化成執行役員化学品事業部門有機化成品・海外営業統括兼海外営業部長"
            },
            {
              "date": "2005-03",
              "role": "四国化成執行役員化学品事業担当"
            },
            {
              "date": "2005-06",
              "role": "四国化成取締役執行役員化学品事業担当"
            },
            {
              "date": "2006-06",
              "role": "四国化成取締役常務執行役員化学品事業担当"
            },
            {
              "date": "2010-06",
              "role": "四国化成代表取締役社長兼Ｃ.Ｏ.Ｏ.",
              "is_ceo_appointed": true
            },
            {
              "date": "2012-06",
              "role": "四国化成代表取締役社長兼Ｃ.Ｏ.Ｏ.兼化学品事業担当"
            }
          ]
        }
      ],
      "sections": {
        "tenure_summary": null,
        "management_policy": null,
        "initiatives": null
      },
      "html_url": "https://the-shashi.com/tse/4099/executives/ceo/tanabe-hiroomi/",
      "term_start": "2010-06",
      "term_end": "2016-06"
    },
    {
      "slug": "tamaki-kunio",
      "name": "玉城邦男",
      "kana": "たまき　くにお",
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "三井物産",
          "from": "1969-07",
          "to": "1999-10",
          "roles": [
            {
              "date": "1969-07",
              "role": "入社"
            },
            {
              "date": "1997-01",
              "role": "関西支社無機化学品部長"
            }
          ]
        },
        {
          "company": "四国化成",
          "from": "1999-10",
          "to": null,
          "roles": [
            {
              "date": "1999-10",
              "role": "入社 顧問"
            },
            {
              "date": "2000-06",
              "role": "四国化成常務執行役員化学品事業担当"
            },
            {
              "date": "2001-06",
              "role": "四国化成取締役常務執行役員化学品事業担当"
            },
            {
              "date": "2003-06",
              "role": "四国化成取締役専務執行役員化学品事業担当"
            },
            {
              "date": "2005-06",
              "role": "四国化成常勤監査役"
            },
            {
              "date": "2009-06",
              "role": "四国化成常勤監査役退任"
            },
            {
              "date": "2016-04",
              "role": "四国化成顧問"
            },
            {
              "date": "2016-06",
              "role": "四国化成代表取締役社長兼Ｃ.Ｅ.Ｏ.兼化学品事業担当",
              "is_ceo_appointed": true
            }
          ]
        }
      ],
      "sections": {
        "tenure_summary": null,
        "management_policy": null,
        "initiatives": null
      },
      "html_url": "https://the-shashi.com/tse/4099/executives/ceo/tamaki-kunio/",
      "term_start": "2016-06",
      "term_end": "2018-06"
    },
    {
      "slug": "tanaka-naoto",
      "name": "田中直人",
      "kana": "たなか　なおと",
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "四国化成",
          "from": "1975-04",
          "to": null,
          "roles": [
            {
              "date": "1975-04",
              "role": "入社"
            },
            {
              "date": "1996-03",
              "role": "四国化成無機化成品営業部長"
            },
            {
              "date": "2002-06",
              "role": "四国化成執行役員建材事業東日本営業統括"
            },
            {
              "date": "2003-03",
              "role": "四国化成執行役員企画・管理部門企画統括"
            },
            {
              "date": "2005-03",
              "role": "四国化成執行役員建材事業担当"
            },
            {
              "date": "2005-06",
              "role": "四国化成取締役執行役員建材事業担当兼幕張支社長"
            },
            {
              "date": "2006-06",
              "role": "四国化成取締役常務執行役員建材事業担当兼幕張支社長"
            },
            {
              "date": "2009-03",
              "role": "四国化成取締役常務執行役員建材事業担当"
            },
            {
              "date": "2013-03",
              "role": "四国化成取締役専務執行役員建材事業担当"
            },
            {
              "date": "2016-06",
              "role": "四国化成代表取締役副社長執行役員建材事業担当"
            },
            {
              "date": "2018-06",
              "role": "四国化成代表取締役社長兼Ｃ.Ｅ.Ｏ.",
              "is_ceo_appointed": true
            }
          ]
        }
      ],
      "sections": {
        "tenure_summary": null,
        "management_policy": null,
        "initiatives": null
      },
      "html_url": "https://the-shashi.com/tse/4099/executives/ceo/tanaka-naoto/",
      "term_start": "2018-06",
      "term_end": "2023-01"
    },
    {
      "slug": "watanabe-mitsunori",
      "name": "渡邊充範",
      "kana": "わたなべ　みつのり",
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "四国化成",
          "from": "1980-04",
          "to": null,
          "roles": [
            {
              "date": "1980-04",
              "role": "入社"
            },
            {
              "date": "2002-03",
              "role": "四国化成経営企画室長"
            },
            {
              "date": "2013-06",
              "role": "四国化成執行役員経営企画室長"
            },
            {
              "date": "2016-06",
              "role": "四国化成取締役執行役員経営企画統括"
            },
            {
              "date": "2017-03",
              "role": "四国化成取締役執行役員企画・管理担当補佐"
            },
            {
              "date": "2018-02",
              "role": "四国化成取締役執行役員企画・管理担当補佐兼大阪支社長"
            },
            {
              "date": "2019-03",
              "role": "四国化成取締役執行役員企画本部長"
            },
            {
              "date": "2022-04",
              "role": "四国化成取締役常務執行役員企画事業推進本部長"
            },
            {
              "date": "2023-01",
              "role": "四国化成代表取締役社長",
              "is_ceo_appointed": true
            },
            {
              "date": "2025-03",
              "role": "四国化成代表取締役社長兼グループコンプライアンス担当"
            }
          ]
        },
        {
          "company": "四国化成コーポレートサービス株式会社",
          "from": "2024-01",
          "to": null,
          "roles": [
            {
              "date": "2024-01",
              "role": "取締役"
            }
          ]
        }
      ],
      "sections": {
        "tenure_summary": null,
        "management_policy": null,
        "initiatives": null
      },
      "html_url": "https://the-shashi.com/tse/4099/executives/ceo/watanabe-mitsunori/",
      "term_start": "2023-01",
      "term_end": null
    }
  ]
}