{
  "spec_version": "4",
  "endpoint": "ceo",
  "stock_code": "8133",
  "company_name": "伊藤忠エネクス",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/8133/ceo/",
  "api_url": "/api/8133/ceo.json",
  "updated": "2026-09-19",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/8133/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": "小寺明",
      "name": "小寺明",
      "kana": null,
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "伊藤忠エネクス",
          "from": "2001",
          "to": "2010",
          "roles": [
            {
              "date": "2001",
              "role": "取締役社長(代表取締役)",
              "is_ceo_appointed": true
            },
            {
              "date": "2005",
              "role": "代表取締役社長"
            },
            {
              "date": "2011",
              "role": "社長退任（次期社長登用による推定）",
              "is_ceo_retired": true,
              "retirement_basis": "next_ceo"
            }
          ]
        }
      ],
      "term_start": "2001",
      "term_end": "2011"
    },
    {
      "slug": "okada-kenji",
      "name": "岡田賢二",
      "kana": "おかだ　けんじ",
      "origin": "外部出身（1974年伊藤忠商事入社）。建設部長・建設／不動産部門長を務めた建設・不動産畑",
      "origin_type": "外部出身",
      "hometown": "東京都",
      "education": "千葉大学工学部 (1974)",
      "education_source": "https://www.nikkan.co.jp/articles/view/196587",
      "prev_role": "顧問",
      "career": [
        {
          "company": "伊藤忠エネクス",
          "from": "2011",
          "to": "2011",
          "roles": [
            {
              "date": "2011",
              "role": "代表取締役社長",
              "is_ceo_appointed": true
            },
            {
              "date": "2022",
              "role": "社長退任（次期社長登用による推定）",
              "is_ceo_retired": true,
              "retirement_basis": "next_ceo"
            }
          ]
        }
      ],
      "html_url": "https://the-shashi.com/tse/8133/executives/ceo/okada-kenji/",
      "term_start": "2011",
      "term_end": "2022"
    },
    {
      "slug": "yoshida-tomofumi",
      "name": "吉田朋史",
      "kana": "よしだ　ともふみ",
      "origin": "外部出身（1979年伊藤忠商事入社）。生活資材・化学品／住生活カンパニーを歩み、伊藤忠商事副社長から転じた",
      "origin_type": "外部出身",
      "hometown": "東京都",
      "education": "慶應義塾大学商学部 (1979)",
      "prev_role": "代表取締役副社長",
      "career": [
        {
          "company": "伊藤忠エネクス",
          "from": "2022",
          "to": "2022",
          "roles": [
            {
              "date": "2022",
              "role": "代表取締役社長CEO",
              "is_ceo_appointed": true
            },
            {
              "date": "2025-06",
              "role": "社長退任（次期社長登用による推定）",
              "is_ceo_retired": true,
              "retirement_basis": "next_ceo"
            }
          ]
        }
      ],
      "html_url": "https://the-shashi.com/tse/8133/executives/ceo/yoshida-tomofumi/",
      "term_start": "2022",
      "term_end": "2025-06"
    },
    {
      "slug": "tabata-nobuyuki",
      "name": "田畑信幸",
      "hometown": null,
      "education": null,
      "prev_role": "顧問",
      "career": [
        {
          "company": "伊藤忠商事",
          "from": "1990-04",
          "to": "2024-04",
          "roles": [
            {
              "date": "1990-04",
              "role": "入社"
            },
            {
              "date": "2011-04",
              "role": "合成樹脂部合成樹脂貿易課長"
            },
            {
              "date": "2018-04",
              "role": "合成樹脂部長"
            },
            {
              "date": "2021-04",
              "role": "化学品部門長兼合成樹脂部長"
            },
            {
              "date": "2022-04",
              "role": "執行役員化学品部門長"
            },
            {
              "date": "2024-04",
              "role": "上席執行理事化学品部門長"
            }
          ]
        },
        {
          "company": "伊藤忠インターナショナル会社",
          "from": "2013-04",
          "to": "2025-04",
          "roles": [
            {
              "date": "2013-04",
              "role": "エネルギー・化学品部門長（ニューヨーク駐在）兼伊藤忠ケミカルズアメリカ会社社長"
            }
          ]
        },
        {
          "company": "伊藤忠エネクス",
          "from": "2025-04",
          "to": null,
          "roles": [
            {
              "date": "2025-04",
              "role": "顧問"
            },
            {
              "date": "2025-06",
              "role": "代表取締役社長",
              "is_ceo_appointed": true
            }
          ]
        }
      ],
      "sections": {
        "tenure_summary": "伊藤忠商事系のエネルギー商社で、収益性重視の経営を承継した。",
        "management_policy": null,
        "initiatives": null
      },
      "html_url": "https://the-shashi.com/tse/8133/executives/ceo/tabata-nobuyuki/",
      "term_start": "2025-06",
      "term_end": null
    }
  ]
}