{
  "spec_version": "6",
  "endpoint": "ceo-person",
  "stock_code": "6269",
  "company_name": "三井海洋開発",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/6269/executives/ceo/yamada-kenji/",
  "api_url": "/api/6269/ceo/yamada-kenji.json",
  "updated": "2026-11-12",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/6269/executives/ceo/yamada-kenji/",
  "source": {
    "person": {
      "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"
    }
  },
  "person": {
    "slug": "yamada-kenji",
    "name": "山田健司",
    "kana": "やまだ　けんじ",
    "surname": "山田",
    "given_name": "健司",
    "origin": "生え抜き（1971年7月に旧三井海洋開発入社、1989年1月に三井海洋開発入社）。石油開発事業部長・取締役を経て2001年3月に代表取締役社長へ",
    "origin_type": "生え抜き",
    "hometown": null,
    "prev_role": "取締役",
    "career": [
      {
        "company": "旧 三井海洋開発㈱",
        "from": "1971-07",
        "to": "1989-01",
        "roles": [
          {
            "date": "1971-07",
            "role": "入社",
            "event": "入社"
          }
        ]
      },
      {
        "company": "三井海洋開発",
        "from": "1989-01",
        "to": null,
        "roles": [
          {
            "date": "1989-01",
            "role": "入社",
            "event": "入社"
          },
          {
            "date": "1989-10",
            "role": "石油開発部プロジェクト開発室長",
            "dept": "石油開発部プロジェクト開発室長"
          },
          {
            "date": "1991-11",
            "role": "石油開発部長",
            "dept": "石油開発部長"
          },
          {
            "date": "1996-08",
            "role": "石油開発事業部長",
            "dept": "石油開発事業部長"
          },
          {
            "date": "1997-03",
            "role": "取締役",
            "board": "取締役"
          },
          {
            "date": "2000-02",
            "role": "MODEC International L.L.C.社Chairman"
          },
          {
            "date": "2001-03",
            "role": "代表取締役社長",
            "board": "代表取締役",
            "title": "社長",
            "is_ceo_appointed": true
          },
          {
            "date": "2008",
            "role": "社長退任（次期社長登用による推定）",
            "title": "社長",
            "event": "退任",
            "estimated": true,
            "is_ceo_retired": true,
            "retirement_basis": "next_ceo"
          }
        ]
      }
    ],
    "html_url": "https://the-shashi.com/tse/6269/executives/ceo/yamada-kenji/",
    "term_start": "2001-03",
    "term_end": "2008",
    "api_url": "https://the-shashi.com/api/6269/ceo/yamada-kenji.json",
    "list_api_url": "https://the-shashi.com/api/6269/ceo.json",
    "predecessor": {
      "slug": "suzuki-nanao",
      "name": "鈴木七雄",
      "api_url": "https://the-shashi.com/api/6269/ceo/suzuki-nanao.json"
    },
    "successor": {
      "slug": "yaji-nobuhiro",
      "name": "矢治信弘",
      "api_url": "https://the-shashi.com/api/6269/ceo/yaji-nobuhiro.json"
    }
  }
}