{
  "spec_version": "5",
  "endpoint": "ceo-person",
  "stock_code": "3002",
  "company_name": "グンゼ",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/3002/executives/ceo/nagaoka-masashi/",
  "api_url": "/api/3002/ceo/nagaoka-masashi.json",
  "updated": "2026-10-29",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/3002/executives/ceo/nagaoka-masashi/",
  "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": "nagaoka-masashi",
    "name": "長岡正司",
    "kana": "ながおか　まさし",
    "surname": "長岡",
    "given_name": "正司",
    "birthdate": "1933-05-19",
    "origin": "生え抜き。1958年に京都大学法学部を卒業して入社し、プラスチック事業部長として取締役・常務を務めた。1992年に代表取締役専務、総合計画室長を経て1996年6月に社長に就任し、2002年6月に会長（CEO）に退いた",
    "origin_type": "生え抜き",
    "milestone": null,
    "hometown": "京都府",
    "education": "京都大学法学部(1958)",
    "prev_role": "代表取締役専務取締役、総合計画室長",
    "prev_company": "グンゼ",
    "career": [
      {
        "company": "グンゼ",
        "from": "1958-04",
        "to": null,
        "roles": [
          {
            "date": "1958-04",
            "role": "入社",
            "event": "入社"
          },
          {
            "date": "1983-02",
            "role": "プラスチック事業部長",
            "dept": "プラスチック事業部長"
          },
          {
            "date": "1985-02",
            "role": "取締役、プラスチック事業部長",
            "board": "取締役",
            "dept": "プラスチック事業部長"
          },
          {
            "date": "1988-06",
            "role": "常務取締役、プラスチック事業部長",
            "board": "取締役",
            "title": "常務",
            "dept": "プラスチック事業部長"
          },
          {
            "date": "1992-06",
            "role": "代表取締役専務取締役、東京支社長兼総合計画室長",
            "board": "代表取締役",
            "title": "専務",
            "dept": "東京支社長兼総合計画室長"
          },
          {
            "date": "1993-06",
            "role": "代表取締役専務取締役、総合計画室長",
            "board": "代表取締役",
            "title": "専務",
            "dept": "総合計画室長"
          },
          {
            "date": "1996-06",
            "role": "代表取締役社長",
            "board": "代表取締役",
            "title": "社長",
            "is_ceo_appointed": true
          },
          {
            "date": "2002-06",
            "role": "社長退任（代表取締役会長CEOへ）",
            "title": "社長",
            "event": "退任",
            "next": "代表取締役会長（CEO）",
            "is_ceo_retired": true,
            "retirement_basis": "press"
          },
          {
            "date": "2002-06",
            "role": "代表取締役会長（CEO）",
            "board": "代表取締役",
            "title": "会長",
            "officer": "CEO"
          }
        ]
      }
    ],
    "references": [
      {
        "source": "グンゼ 2002年4月8日「代表取締役の異動に関するお知らせ」",
        "for": [
          "kana",
          "birthdate",
          "hometown",
          "education",
          "career",
          "origin"
        ]
      }
    ],
    "html_url": "https://the-shashi.com/tse/3002/executives/ceo/nagaoka-masashi/",
    "term_start": "1996-06",
    "term_end": "2002-06",
    "api_url": "https://the-shashi.com/api/3002/ceo/nagaoka-masashi.json",
    "list_api_url": "https://the-shashi.com/api/3002/ceo.json",
    "predecessor": {
      "slug": "hamuro-yoshiaki",
      "name": "羽室幸明",
      "api_url": "https://the-shashi.com/api/3002/ceo/hamuro-yoshiaki.json"
    },
    "successor": {
      "slug": "kodani-shigeo",
      "name": "小谷茂雄",
      "api_url": "https://the-shashi.com/api/3002/ceo/kodani-shigeo.json"
    }
  }
}