{
  "spec_version": "6",
  "endpoint": "ceo-person",
  "stock_code": "5401",
  "company_name": "日本製鉄",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/5401/executives/ceo/chihaya-akira/",
  "api_url": "/api/5401/ceo/chihaya-akira.json",
  "updated": "2026-10-29",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/5401/executives/ceo/chihaya-akira/",
  "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": "chihaya-akira",
    "name": "千速晃",
    "kana": "ちはや　あきら",
    "surname": "千速",
    "given_name": "晃",
    "origin": "生え抜き（旧八幡製鉄へ入社）。秘書部長・取締役経営企画部長・常務・副社長を歴任し、営業総括や半導体事業など幅広く担当したのち社長へ就任した",
    "origin_type": "生え抜き",
    "milestone": null,
    "hometown": "東京都",
    "education": "東京大学経済学部",
    "prev_role": "代表取締役副社長",
    "career": [
      {
        "company": "新日本製鐵㈱",
        "from": null,
        "to": "2007-01",
        "roles": [
          {
            "date": "1998-04",
            "role": "取締役社長",
            "board": "取締役",
            "title": "社長",
            "is_ceo_appointed": true
          },
          {
            "date": "2003-04",
            "role": "取締役会長",
            "board": "取締役",
            "title": "会長"
          },
          {
            "date": "2003-04",
            "role": "社長退任（次期社長登用による推定）",
            "title": "社長",
            "event": "退任",
            "estimated": true,
            "is_ceo_retired": true,
            "retirement_basis": "next_ceo"
          }
        ]
      }
    ],
    "html_url": "https://the-shashi.com/tse/5401/executives/ceo/chihaya-akira/",
    "term_start": "1998-04",
    "term_end": "2003-04",
    "api_url": "https://the-shashi.com/api/5401/ceo/chihaya-akira.json",
    "list_api_url": "https://the-shashi.com/api/5401/ceo.json",
    "predecessor": {
      "slug": "imai-takashi",
      "name": "今井敬",
      "api_url": "https://the-shashi.com/api/5401/ceo/imai-takashi.json"
    },
    "successor": {
      "slug": "mimura-akio",
      "name": "三村明夫",
      "api_url": "https://the-shashi.com/api/5401/ceo/mimura-akio.json"
    }
  }
}