{
  "spec_version": "4",
  "endpoint": "ceo",
  "stock_code": "4206",
  "company_name": "アイカ工業",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/4206/ceo/",
  "api_url": "/api/4206/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/4206/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": "watanabe-osamu",
      "name": "渡辺修",
      "kana": "わたなべ　おさむ",
      "career": [
        {
          "company": "アイカ工業",
          "from": "1970-03",
          "to": null,
          "roles": [
            {
              "date": "1970-03",
              "role": "入社"
            },
            {
              "date": "1997-04",
              "role": "経理部長"
            },
            {
              "date": "1999-04",
              "role": "管理本部副本部長・人事部長"
            },
            {
              "date": "2000-04",
              "role": "経理部担当"
            },
            {
              "date": "2000-04",
              "role": "審査管理部長"
            },
            {
              "date": "2000-06",
              "role": "取締役"
            },
            {
              "date": "2001-04",
              "role": "経営企画部長"
            },
            {
              "date": "2001-06",
              "role": "常務取締役"
            },
            {
              "date": "2002-04",
              "role": "経理・審査統括部長"
            },
            {
              "date": "2002-04",
              "role": "執行役員"
            },
            {
              "date": "2002-06",
              "role": "総務人事部担当"
            },
            {
              "date": "2003-04",
              "role": "総務秘書室・総合企画部担当"
            },
            {
              "date": "2003-06",
              "role": "専務取締役"
            },
            {
              "date": "2003-07",
              "role": "社長補佐"
            },
            {
              "date": "2003-07",
              "role": "国際営業部・中国事業室担当"
            },
            {
              "date": "2004-04",
              "role": "国際部担当"
            },
            {
              "date": "2004-06",
              "role": "機能セクター担当"
            },
            {
              "date": "2005-06",
              "role": "代表取締役"
            },
            {
              "date": "2005-06",
              "role": "取締役社長",
              "is_ceo_appointed": true
            },
            {
              "date": "2010-06",
              "role": "取締役会長"
            },
            {
              "date": "2010-06",
              "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/4206/executives/ceo/watanabe-osamu/",
      "term_start": "2005-06",
      "term_end": "2010-06"
    },
    {
      "slug": "ono-yuji",
      "name": "小野勇治",
      "kana": "おの　ゆうじ",
      "career": [
        {
          "company": "アイカ工業",
          "from": "1979-04",
          "to": null,
          "roles": [
            {
              "date": "1979-04",
              "role": "入社"
            },
            {
              "date": "2000-04",
              "role": "化成品開発第一部長"
            },
            {
              "date": "2002-10",
              "role": "化成品カンパニー営業部長"
            },
            {
              "date": "2004-04",
              "role": "化成品カンパニー副カンパニー長"
            },
            {
              "date": "2004-06",
              "role": "執行役員"
            },
            {
              "date": "2004-10",
              "role": "第二Ｒ＆Ｄセンター長"
            },
            {
              "date": "2008-04",
              "role": "化成品カンパニー長"
            },
            {
              "date": "2008-06",
              "role": "取締役"
            },
            {
              "date": "2009-06",
              "role": "常務取締役"
            },
            {
              "date": "2010-06",
              "role": "代表取締役"
            },
            {
              "date": "2010-06",
              "role": "取締役社長",
              "is_ceo_appointed": true
            },
            {
              "date": "2018-06",
              "role": "社長執行役員"
            },
            {
              "date": "2022-04",
              "role": "取締役会長"
            },
            {
              "date": "2022-04",
              "role": "社長退任（次期社長登用による推定）",
              "is_ceo_retired": true,
              "retirement_basis": "next_ceo"
            }
          ]
        }
      ],
      "html_url": "https://the-shashi.com/tse/4206/executives/ceo/ono-yuji/",
      "term_start": "2010-06",
      "term_end": "2022-04"
    },
    {
      "slug": "ebihara-kenji",
      "name": "海老原健治",
      "kana": "えびはら　けんじ",
      "career": [
        {
          "company": "アイカ工業",
          "from": "1991-04",
          "to": null,
          "roles": [
            {
              "date": "1991-04",
              "role": "入社"
            },
            {
              "date": "2009-04",
              "role": "Ｒ＆Ｄセンター化学品開発部長"
            },
            {
              "date": "2010-10",
              "role": "Ｒ＆Ｄセンター甚目寺研究所長"
            },
            {
              "date": "2013-04",
              "role": "Ｒ＆Ｄセンター長"
            },
            {
              "date": "2015-04",
              "role": "機能材料カンパニー長"
            },
            {
              "date": "2017-06",
              "role": "執行役員"
            },
            {
              "date": "2018-06",
              "role": "上席執行役員"
            },
            {
              "date": "2019-04",
              "role": "常務執行役員"
            },
            {
              "date": "2019-06",
              "role": "取締役"
            },
            {
              "date": "2020-04",
              "role": "化成品カンパニー長"
            },
            {
              "date": "2020-04",
              "role": "営業統括本部副部長"
            },
            {
              "date": "2022-04",
              "role": "代表取締役"
            },
            {
              "date": "2022-04",
              "role": "社長執行役員",
              "is_ceo_appointed": true
            }
          ]
        }
      ],
      "html_url": "https://the-shashi.com/tse/4206/executives/ceo/ebihara-kenji/",
      "term_start": "2022-04",
      "term_end": null
    }
  ]
}