{
  "spec_version": "4",
  "endpoint": "ceo",
  "stock_code": "4041",
  "company_name": "日本曹達",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/4041/ceo/",
  "api_url": "/api/4041/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/4041/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": 2,
  "ceo": [
    {
      "slug": "ishii-akira",
      "name": "石井彰",
      "kana": "いしい　あきら",
      "hometown": "千葉県",
      "education": "慶應義塾大学法学部",
      "prev_role": null,
      "career": [
        {
          "company": "日本曹達",
          "from": "1976-04",
          "to": null,
          "roles": [
            {
              "date": "1976-04",
              "role": "入社"
            },
            {
              "date": "2001-04",
              "role": "機能化学品事業部スペシャリティケミカルズグループリーダー"
            },
            {
              "date": "2004-04",
              "role": "高岡工場総務部長"
            },
            {
              "date": "2007-06",
              "role": "経営企画室長"
            },
            {
              "date": "2009-04",
              "role": "人事室長"
            },
            {
              "date": "2009-06",
              "role": "取締役経営企画室・関連事業室担当兼人事室長"
            },
            {
              "date": "2011-04",
              "role": "取締役経営企画室担当兼人事室長"
            },
            {
              "date": "2011-06",
              "role": "取締役企画担当兼人事室長"
            },
            {
              "date": "2013-04",
              "role": "取締役農業化学品事業部長"
            },
            {
              "date": "2013-06",
              "role": "取締役常務執行役員農業化学品事業部長"
            },
            {
              "date": "2015-06",
              "role": "代表取締役社長",
              "is_ceo_appointed": true
            },
            {
              "date": "2021-04",
              "role": "代表取締役会長"
            }
          ]
        }
      ],
      "sections": {
        "tenure_summary": null,
        "management_policy": null,
        "initiatives": null
      },
      "html_url": "https://the-shashi.com/tse/4041/executives/ceo/ishii-akira/",
      "term_start": "2015-06",
      "term_end": "2021-04"
    },
    {
      "slug": "aga-eiji",
      "name": "阿賀英司",
      "kana": "あが　えいじ",
      "hometown": "奈良県",
      "education": "同志社大学法学部",
      "prev_role": null,
      "career": [
        {
          "company": "日本曹達",
          "from": "1985-04",
          "to": null,
          "roles": [
            {
              "date": "1985-04",
              "role": "入社"
            },
            {
              "date": "2010-04",
              "role": "化学品事業部化成品グループリーダー"
            },
            {
              "date": "2012-02",
              "role": "Alkaline SAS出向 Executive Vice President"
            },
            {
              "date": "2015-04",
              "role": "化学品事業部企画・管理室長"
            },
            {
              "date": "2017-04",
              "role": "執行役員化学品事業部長兼大阪支店担当"
            },
            {
              "date": "2018-04",
              "role": "執行役員化学品事業部長"
            },
            {
              "date": "2020-04",
              "role": "執行役員人事室担当"
            },
            {
              "date": "2020-06",
              "role": "取締役執行役員営業統括兼人事室担当兼購買・物流部担当"
            },
            {
              "date": "2021-04",
              "role": "代表取締役社長",
              "is_ceo_appointed": true
            },
            {
              "date": "2022-04",
              "role": "代表取締役社長 新規事業開発推進部担当"
            },
            {
              "date": "2023-04",
              "role": "代表取締役社長 営業統括兼新規事業開発推進部担当"
            },
            {
              "date": "2024-04",
              "role": "代表取締役社長 営業統括"
            },
            {
              "date": "2025-04",
              "role": "代表取締役社長"
            }
          ]
        }
      ],
      "sections": {
        "tenure_summary": null,
        "management_policy": null,
        "initiatives": null
      },
      "html_url": "https://the-shashi.com/tse/4041/executives/ceo/aga-eiji/",
      "term_start": "2021-04",
      "term_end": null
    }
  ]
}