{
  "spec_version": "5",
  "endpoint": "ceo-person",
  "stock_code": "8174",
  "company_name": "日本瓦斯",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/8174/executives/ceo/ishibashi-yukihiro/",
  "api_url": "/api/8174/ceo/ishibashi-yukihiro.json",
  "updated": "2026-10-20",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/8174/executives/ceo/ishibashi-yukihiro/",
  "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": "ishibashi-yukihiro",
    "name": "石橋幸弘",
    "kana": "いしばし　ゆきひろ",
    "origin": "生え抜き（1955年入社）。岩谷産業から設立時の日本瓦斯へ転籍し、営業部長・営業本部長・代表取締役専務を経て社長へ",
    "origin_type": "生え抜き",
    "hometown": "島根県",
    "education": "島根県立浜田高等学校 (1950)",
    "prev_role": "代表取締役専務",
    "career": [
      {
        "company": "岩谷産業",
        "from": "1950-04",
        "to": "1955-07",
        "roles": [
          {
            "date": "1950-04",
            "role": "入社",
            "event": "入社"
          }
        ]
      },
      {
        "company": "日本瓦斯",
        "from": "1955-07",
        "to": null,
        "roles": [
          {
            "date": "1955-07",
            "role": "入社（岩谷産業から転籍）",
            "event": "入社"
          },
          {
            "date": "1958-07",
            "role": "取締役（営業部長）",
            "board": "取締役",
            "dept": "営業部長"
          },
          {
            "date": "1960-07",
            "role": "常務取締役",
            "board": "取締役",
            "title": "常務"
          },
          {
            "date": "1972-08",
            "role": "常務取締役（営業本部長）",
            "board": "取締役",
            "title": "常務",
            "dept": "営業本部長"
          },
          {
            "date": "1973-09",
            "role": "代表取締役専務",
            "board": "代表取締役",
            "title": "専務"
          },
          {
            "date": "1987-06",
            "role": "代表取締役社長",
            "board": "代表取締役",
            "title": "社長",
            "is_ceo_appointed": true
          },
          {
            "date": "2000-06",
            "role": "代表取締役会長",
            "board": "代表取締役",
            "title": "会長"
          },
          {
            "date": "2000-06",
            "role": "社長退任（代表取締役会長へ）",
            "title": "社長",
            "event": "退任",
            "next": "代表取締役会長",
            "is_ceo_retired": true,
            "retirement_basis": "disclosure"
          }
        ]
      }
    ],
    "html_url": "https://the-shashi.com/tse/8174/executives/ceo/ishibashi-yukihiro/",
    "term_start": "1987-06",
    "term_end": "2000-06",
    "api_url": "https://the-shashi.com/api/8174/ceo/ishibashi-yukihiro.json",
    "list_api_url": "https://the-shashi.com/api/8174/ceo.json",
    "predecessor": {
      "slug": "motoyama-shusaku",
      "name": "本山修策",
      "api_url": "https://the-shashi.com/api/8174/ceo/motoyama-shusaku.json"
    },
    "successor": {
      "slug": "後藤正雄",
      "name": "後藤正雄",
      "api_url": "https://the-shashi.com/api/8174/ceo/後藤正雄.json"
    }
  }
}