{
  "spec_version": "5",
  "endpoint": "ceo-person",
  "stock_code": "6301",
  "company_name": "コマツ",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/6301/executives/ceo/tanaka-masao/",
  "api_url": "/api/6301/ceo/tanaka-masao.json",
  "updated": "2026-10-13",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/6301/executives/ceo/tanaka-masao/",
  "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": "tanaka-masao",
    "name": "田中正雄",
    "kana": "たなか　まさお",
    "surname": "田中",
    "given_name": "正雄",
    "birthdate": "1926-08-23",
    "origin": "生え抜き（1951年入社）。1976年取締役、1981年常務、1984年専務を経て、能川昭二氏が任期途中で辞任した1987年6月に社長へ就任。社内配布文書で「適切な権限委譲」「組織の活性化」「取引先や関連会社との連携」を掲げ、前任の独断専行と評された路線を改めた。1989年6月に取締役相談役へ退いた",
    "origin_type": "生え抜き",
    "education": "東京大学法学部政治学科 (1951)",
    "education_source": "https://ja.wikipedia.org/wiki/%E7%94%B0%E4%B8%AD%E6%AD%A3%E9%9B%84_(%E5%AE%9F%E6%A5%AD%E5%AE%B6)",
    "prev_role": "専務取締役",
    "career": [
      {
        "company": "コマツ",
        "from": "1951",
        "to": null,
        "roles": [
          {
            "date": "1951",
            "role": "入社"
          },
          {
            "date": "1976-03",
            "role": "取締役"
          },
          {
            "date": "1981-01",
            "role": "常務取締役"
          },
          {
            "date": "1984-08",
            "role": "専務取締役"
          },
          {
            "date": "1987-06",
            "role": "取締役社長",
            "is_ceo_appointed": true
          },
          {
            "date": "1989-06",
            "role": "社長退任",
            "is_ceo_retired": true,
            "retirement_basis": "press"
          },
          {
            "date": "1989-06",
            "role": "取締役相談役"
          }
        ]
      }
    ],
    "html_url": "https://the-shashi.com/tse/6301/executives/ceo/tanaka-masao/",
    "term_start": "1987-06",
    "term_end": "1989-06",
    "api_url": "https://the-shashi.com/api/6301/ceo/tanaka-masao.json",
    "list_api_url": "https://the-shashi.com/api/6301/ceo.json",
    "predecessor": {
      "slug": "nogawa-shoji",
      "name": "能川昭二",
      "api_url": "https://the-shashi.com/api/6301/ceo/nogawa-shoji.json"
    },
    "successor": {
      "slug": "katada-tetsuya",
      "name": "片田哲也",
      "api_url": "https://the-shashi.com/api/6301/ceo/katada-tetsuya.json"
    }
  }
}