{
  "spec_version": "5",
  "endpoint": "ceo-person",
  "stock_code": "8318",
  "company_name": "住友銀行",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/8318/executives/ceo/isoda-ichiro/",
  "api_url": "/api/8318/ceo/isoda-ichiro.json",
  "updated": "2026-10-26",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/8318/executives/ceo/isoda-ichiro/",
  "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": "isoda-ichiro",
    "name": "磯田一郎",
    "kana": "いそだ　いちろう",
    "surname": "磯田",
    "given_name": "一郎",
    "origin": "生え抜き。1977年の頭取就任以来「向こう傷は問わない」と言われる積極路線を敷き、住友銀行の拡大を主導した",
    "origin_type": "生え抜き",
    "career_note": "磯田一郎の退任年月と、磯田の退任から西川善文の就任（1997年6月）までの代は所蔵資料で確認できていない",
    "career": [
      {
        "company": "住友銀行",
        "from": "1977",
        "to": null,
        "roles": [
          {
            "date": "1977",
            "role": "代表取締役頭取",
            "board": "代表取締役",
            "title": "頭取",
            "is_ceo_appointed": true
          }
        ]
      }
    ],
    "references": [
      {
        "source": "『日経ビジネス』「池田君も私も苦しんだ、兵を語る磯田一郎氏 前NHK経営委員会委員長」（1989年5月8日）",
        "url": null,
        "for": [
          "kana"
        ]
      }
    ],
    "html_url": "https://the-shashi.com/tse/8318/executives/ceo/isoda-ichiro/",
    "term_start": "1977",
    "term_end": "1997-06",
    "api_url": "https://the-shashi.com/api/8318/ceo/isoda-ichiro.json",
    "list_api_url": "https://the-shashi.com/api/8318/ceo.json",
    "predecessor": {
      "slug": "堀田庄三",
      "name": "堀田庄三",
      "api_url": "https://the-shashi.com/api/8318/ceo/堀田庄三.json"
    },
    "successor": {
      "slug": "nishikawa-yoshifumi",
      "name": "西川善文",
      "api_url": "https://the-shashi.com/api/8318/ceo/nishikawa-yoshifumi.json"
    }
  }
}