{
  "spec_version": "5",
  "endpoint": "ceo-person",
  "stock_code": "onoda-cement",
  "company_name": "小野田セメント",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/onoda-cement/executives/ceo/kasai-shinzo/",
  "api_url": "/api/onoda-cement/ceo/kasai-shinzo.json",
  "updated": "2026-10-27",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/onoda-cement/executives/ceo/kasai-shinzo/",
  "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": "kasai-shinzo",
    "name": "笠井真三",
    "kana": "かさい　しんぞう",
    "surname": "笠井",
    "given_name": "真三",
    "hometown": null,
    "education": null,
    "prev_role": "取締役",
    "origin": "創業者笠井順八氏の次男。1890年に満17歳でワグネルに随ってドイツへ留学し、帰国後は技師・技師長として工場の改良を率いた技術者",
    "origin_type": "創業家",
    "career": [
      {
        "company": "小野田セメント",
        "from": "1890-08",
        "to": "1939-07",
        "roles": [
          {
            "date": "1890-08",
            "role": "ドイツ留学"
          },
          {
            "date": "1896",
            "role": "技師（ドイツより帰国）"
          },
          {
            "date": "1904-01",
            "role": "取締役（技師長）"
          },
          {
            "date": "1918-07",
            "role": "専務取締役（社長空席・経営の首座）",
            "is_ceo_appointed": true
          },
          {
            "date": "1924-07",
            "role": "専務取締役社長"
          },
          {
            "date": "1939-07",
            "role": "社長退任（相談役）",
            "is_ceo_retired": true,
            "retirement_basis": "press"
          }
        ]
      }
    ],
    "references": [
      {
        "source": "小野田セメント百年史（日本経営史研究所編、1981年） 口絵「歴代社長」・第2章・第4章・第5章",
        "for": [
          "career",
          "origin"
        ]
      },
      {
        "source": "国立国会図書館サーチ 書誌『笠井真三』（小野田セメント株式会社笠井真三伝編纂委員会）の読み（カサイ シンゾウ）",
        "url": "https://ndlsearch.ndl.go.jp/api/opensearch?creator=%E7%AC%A0%E4%BA%95%E7%9C%9F%E4%B8%89",
        "for": [
          "kana"
        ]
      }
    ],
    "html_url": "https://the-shashi.com/tse/onoda-cement/executives/ceo/kasai-shinzo/",
    "term_start": "1918-07",
    "term_end": "1939-07",
    "api_url": "https://the-shashi.com/api/onoda-cement/ceo/kasai-shinzo.json",
    "list_api_url": "https://the-shashi.com/api/onoda-cement/ceo.json",
    "predecessor": {
      "slug": "福原栄太郎",
      "name": "福原栄太郎",
      "api_url": "https://the-shashi.com/api/onoda-cement/ceo/福原栄太郎.json"
    },
    "successor": {
      "slug": "狩野宗三",
      "name": "狩野宗三",
      "api_url": "https://the-shashi.com/api/onoda-cement/ceo/狩野宗三.json"
    }
  }
}