{
  "spec_version": "4",
  "endpoint": "ceo",
  "stock_code": "8012",
  "company_name": "長瀬産業",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/8012/ceo/",
  "api_url": "/api/8012/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/8012/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": 3,
  "ceo": [
    {
      "slug": "nagase-hiroshi",
      "name": "長瀬洋",
      "kana": "ながせ　ひろし",
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "長瀬産業",
          "from": "1977-04",
          "to": null,
          "roles": [
            {
              "date": "1977-04",
              "role": "入社"
            },
            {
              "date": "1988-04",
              "role": "同合成樹脂第二部長"
            },
            {
              "date": "1989-06",
              "role": "同取締役"
            },
            {
              "date": "1995-06",
              "role": "同常務取締役"
            },
            {
              "date": "1997-06",
              "role": "同代表取締役専務取締役"
            },
            {
              "date": "1999-06",
              "role": "同代表取締役社長",
              "is_ceo_appointed": true
            },
            {
              "date": "2001-06",
              "role": "同代表取締役社長執行役員"
            },
            {
              "date": "2015-04",
              "role": "同代表取締役会長"
            },
            {
              "date": "2015-04",
              "role": "社長退任（次期社長登用による推定）",
              "is_ceo_retired": true,
              "retirement_basis": "next_ceo"
            },
            {
              "date": "2023-04",
              "role": "同取締役相談役"
            }
          ]
        }
      ],
      "sections": {
        "tenure_summary": null,
        "management_policy": null,
        "initiatives": null
      },
      "html_url": "https://the-shashi.com/tse/8012/executives/ceo/nagase-hiroshi/",
      "term_start": "1999-06",
      "term_end": "2015-04"
    },
    {
      "slug": "asakura-kenji",
      "name": "朝倉研二",
      "kana": "あさくら　けんじ",
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "長瀬産業",
          "from": "1978-04",
          "to": null,
          "roles": [
            {
              "date": "1978-04",
              "role": "入社"
            },
            {
              "date": "2006-10",
              "role": "同自動車材料事業部長"
            },
            {
              "date": "2009-04",
              "role": "同執行役員、自動車材料事業部長"
            },
            {
              "date": "2013-06",
              "role": "同取締役執行役員"
            },
            {
              "date": "2015-04",
              "role": "同代表取締役社長執行役員",
              "is_ceo_appointed": true
            },
            {
              "date": "2023-04",
              "role": "同代表取締役会長"
            },
            {
              "date": "2023-04",
              "role": "社長退任（次期社長登用による推定）",
              "is_ceo_retired": true,
              "retirement_basis": "next_ceo"
            }
          ]
        },
        {
          "company": "日本たばこ産業㈱",
          "from": "2023-04",
          "to": null,
          "roles": [
            {
              "date": "2023-04",
              "role": "社外取締役"
            }
          ]
        }
      ],
      "sections": {
        "tenure_summary": null,
        "management_policy": null,
        "initiatives": null
      },
      "html_url": "https://the-shashi.com/tse/8012/executives/ceo/asakura-kenji/",
      "term_start": "2015-04",
      "term_end": "2023-04"
    },
    {
      "slug": "ueshima-hiroyuki",
      "name": "上島宏之",
      "kana": "うえしま　ひろゆき",
      "hometown": null,
      "education": null,
      "prev_role": null,
      "career": [
        {
          "company": "長瀬産業",
          "from": "1988-04",
          "to": null,
          "roles": [
            {
              "date": "1988-04",
              "role": "入社"
            },
            {
              "date": "2015-04",
              "role": "同経営企画部本部長"
            },
            {
              "date": "2017-04",
              "role": "同執行役員、経営企画部本部長"
            },
            {
              "date": "2017-10",
              "role": "同執行役員、自動車材料事業部長"
            },
            {
              "date": "2022-06",
              "role": "同取締役執行役員"
            },
            {
              "date": "2023-04",
              "role": "同代表取締役社長執行役員",
              "is_ceo_appointed": true
            }
          ]
        }
      ],
      "sections": {
        "tenure_summary": null,
        "management_policy": null,
        "initiatives": null
      },
      "html_url": "https://the-shashi.com/tse/8012/executives/ceo/ueshima-hiroyuki/",
      "term_start": "2023-04",
      "term_end": null
    }
  ]
}