{
  "spec_version": "5",
  "endpoint": "ceo",
  "stock_code": "5231",
  "company_name": "日本セメント",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/5231/ceo/",
  "api_url": "/api/5231/ceo.json",
  "updated": "2026-10-27",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/5231/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": 8,
  "ceo": [
    {
      "slug": "asano-soichiro",
      "name": "浅野総一郎",
      "kana": "あさの　そういちろう",
      "term_start": "1883-04",
      "term_end": "1930-12",
      "origin_type": "創業家",
      "milestone": "創業者",
      "prev_role": "石炭商",
      "api_url": "https://the-shashi.com/api/5231/ceo/asano-soichiro.json",
      "html_url": "https://the-shashi.com/tse/5231/executives/ceo/asano-soichiro/"
    },
    {
      "slug": "asano-taijiro",
      "name": "浅野泰治郎",
      "kana": "あさの　たいじろう",
      "term_start": "1930-12",
      "term_end": "1946-04",
      "origin_type": "創業家",
      "milestone": null,
      "prev_role": "副社長",
      "api_url": "https://the-shashi.com/api/5231/ceo/asano-taijiro.json",
      "html_url": "https://the-shashi.com/tse/5231/executives/ceo/asano-taijiro/"
    },
    {
      "slug": "tokune-yoshio",
      "name": "徳根吉郎",
      "kana": "とくね　よしお",
      "term_start": "1946-04",
      "term_end": "1949-09",
      "origin_type": "生え抜き",
      "milestone": "浅野家以外で初",
      "prev_role": "常務取締役",
      "api_url": "https://the-shashi.com/api/5231/ceo/tokune-yoshio.json",
      "html_url": "https://the-shashi.com/tse/5231/executives/ceo/tokune-yoshio/"
    },
    {
      "slug": "inoue-eiki",
      "name": "井上英煕",
      "kana": "いのうえ　えいき",
      "term_start": "1949-09",
      "term_end": "1966-12",
      "origin_type": "生え抜き",
      "milestone": null,
      "prev_role": "代表取締役専務",
      "api_url": "https://the-shashi.com/api/5231/ceo/inoue-eiki.json",
      "html_url": "https://the-shashi.com/tse/5231/executives/ceo/inoue-eiki/"
    },
    {
      "slug": "takeyasu-chiharu",
      "name": "武安千春",
      "kana": "たけやす　ちはる",
      "term_start": "1966-12",
      "term_end": "1974-12",
      "origin_type": "生え抜き",
      "milestone": null,
      "prev_role": "取締役副社長",
      "api_url": "https://the-shashi.com/api/5231/ceo/takeyasu-chiharu.json",
      "html_url": "https://the-shashi.com/tse/5231/executives/ceo/takeyasu-chiharu/"
    },
    {
      "slug": "harashima-tamotsu",
      "name": "原島保",
      "kana": "はらしま　たもつ",
      "term_start": "1974-12",
      "term_end": "1982-07",
      "origin_type": "生え抜き",
      "milestone": null,
      "prev_role": "専務取締役",
      "api_url": "https://the-shashi.com/api/5231/ceo/harashima-tamotsu.json",
      "html_url": "https://the-shashi.com/tse/5231/executives/ceo/harashima-tamotsu/"
    },
    {
      "slug": "kitaoka-toru",
      "name": "北岡徹",
      "kana": "きたおか　とおる",
      "term_start": "1982-07",
      "term_end": "1992-06",
      "origin_type": "生え抜き",
      "milestone": null,
      "prev_role": "専務取締役",
      "api_url": "https://the-shashi.com/api/5231/ceo/kitaoka-toru.json",
      "html_url": "https://the-shashi.com/tse/5231/executives/ceo/kitaoka-toru/"
    },
    {
      "slug": "kimura-michio",
      "name": "木村道夫",
      "kana": "きむら　みちお",
      "term_start": "1992-06",
      "term_end": "1998-10",
      "origin_type": "生え抜き",
      "milestone": null,
      "prev_role": "取締役副社長",
      "api_url": "https://the-shashi.com/api/5231/ceo/kimura-michio.json",
      "html_url": "https://the-shashi.com/tse/5231/executives/ceo/kimura-michio/"
    }
  ]
}