{
  "spec_version": "5",
  "endpoint": "ceo-person",
  "stock_code": "7951",
  "company_name": "ヤマハ",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/7951/executives/ceo/ueshima-seisuke/",
  "api_url": "/api/7951/ceo/ueshima-seisuke.json",
  "updated": "2026-10-13",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/7951/executives/ceo/ueshima-seisuke/",
  "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": "ueshima-seisuke",
    "name": "上島清介",
    "kana": "うえしま　せいすけ",
    "surname": "上島",
    "given_name": "清介",
    "origin": "生え抜き（1958年入社）。専務・副社長兼ヤマハ発動機会長を経て、1992年2月に川上浩氏の退任を受けて第8代社長に就任した",
    "origin_type": "生え抜き",
    "hometown": null,
    "birthdate": "1934-05-16",
    "education": "慶應義塾大学経済学部 (1958)",
    "prev_role": "副社長",
    "milestone": "川上家の世襲が途切れたあと最初の社長",
    "career": [
      {
        "company": "日本楽器製造",
        "from": "1958",
        "to": null,
        "roles": [
          {
            "date": "1958",
            "role": "入社"
          },
          {
            "date": "1981",
            "role": "専務"
          },
          {
            "date": "1983",
            "role": "副社長兼ヤマハ発動機会長"
          },
          {
            "date": "1985",
            "role": "ヤマハ発動機取締役退任"
          },
          {
            "date": "1992-02",
            "role": "代表取締役社長",
            "is_ceo_appointed": true
          },
          {
            "date": "1997-06",
            "role": "社長退任（会長就任）",
            "is_ceo_retired": true,
            "retirement_basis": "press"
          },
          {
            "date": "1997-06",
            "role": "取締役会長"
          }
        ]
      }
    ],
    "html_url": "https://the-shashi.com/tse/7951/executives/ceo/ueshima-seisuke/",
    "term_start": "1992-02",
    "term_end": "1997-06",
    "api_url": "https://the-shashi.com/api/7951/ceo/ueshima-seisuke.json",
    "list_api_url": "https://the-shashi.com/api/7951/ceo.json",
    "predecessor": {
      "slug": "kawakami-hiroshi",
      "name": "川上浩",
      "api_url": "https://the-shashi.com/api/7951/ceo/kawakami-hiroshi.json"
    },
    "successor": {
      "slug": "ishimura-kazukiyo",
      "name": "石村和清",
      "api_url": "https://the-shashi.com/api/7951/ceo/ishimura-kazukiyo.json"
    }
  }
}