{
  "spec_version": "5",
  "endpoint": "ceo-person",
  "stock_code": "8303",
  "company_name": "SBI新生銀行",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/8303/executives/ceo/yashiro-masamoto/",
  "api_url": "/api/8303/ceo/yashiro-masamoto.json",
  "updated": "2026-10-20",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/8303/executives/ceo/yashiro-masamoto/",
  "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": "yashiro-masamoto",
    "name": "八城政基",
    "kana": "やしろ　まさもと",
    "surname": "八城",
    "given_name": "政基",
    "hometown": null,
    "education": null,
    "prev_role": null,
    "career": [
      {
        "company": "スタンダード・ヴァキューム・オイル日本支社（現エクソンモービル有限会社）",
        "from": "1958-06",
        "to": null,
        "roles": [
          {
            "date": "1958-06",
            "role": "入社",
            "event": "入社"
          }
        ]
      },
      {
        "company": "エッソ石油株式会社",
        "from": "1974-06",
        "to": null,
        "roles": [
          {
            "date": "1974-06",
            "role": "取締役社長",
            "board": "取締役",
            "title": "社長"
          }
        ]
      },
      {
        "company": "シティバンク・エヌ・エイ",
        "from": "1989-11",
        "to": null,
        "roles": [
          {
            "date": "1989-11",
            "role": "在日代表"
          }
        ]
      },
      {
        "company": "SBI新生銀行",
        "from": "2000-03",
        "to": null,
        "roles": [
          {
            "date": "2000-03",
            "role": "代表取締役会長兼社長",
            "board": "代表取締役",
            "title": "会長兼社長",
            "is_ceo_appointed": true
          },
          {
            "date": "2004-06",
            "role": "取締役代表執行役会長兼社長",
            "board": "取締役",
            "officer": "代表執行役会長兼社長"
          },
          {
            "date": "2005-06",
            "role": "取締役会長",
            "board": "取締役",
            "title": "会長"
          },
          {
            "date": "2006-06",
            "role": "シニア・アドバイザー"
          },
          {
            "date": "2008-06",
            "role": "取締役会長",
            "board": "取締役",
            "title": "会長"
          },
          {
            "date": "2008-11",
            "role": "取締役会長　代表執行役社長　個人部門長",
            "board": "取締役",
            "title": "会長",
            "officer": "代表執行役社長",
            "dept": "個人部門長",
            "is_ceo_appointed": true
          },
          {
            "date": "2009-01",
            "role": "取締役会長　代表執行役社長",
            "board": "取締役",
            "title": "会長",
            "officer": "代表執行役社長"
          }
        ]
      },
      {
        "company": "中国銀行業監督管理委員会",
        "from": "2004-08",
        "to": null,
        "roles": [
          {
            "date": "2004-08",
            "role": "国際顧問委員会委員"
          }
        ]
      },
      {
        "company": "中国建設銀行",
        "from": "2007-06",
        "to": null,
        "roles": [
          {
            "date": "2007-06",
            "role": "顧問",
            "title": "顧問"
          }
        ]
      }
    ],
    "sections": {
      "tenure_summary": null,
      "management_policy": null,
      "initiatives": null,
      "evaluation": null,
      "notable": null
    },
    "html_url": "https://the-shashi.com/tse/8303/executives/ceo/yashiro-masamoto/",
    "term_start": "2000-03",
    "term_end": "2005-06",
    "api_url": "https://the-shashi.com/api/8303/ceo/yashiro-masamoto.json",
    "list_api_url": "https://the-shashi.com/api/8303/ceo.json",
    "predecessor": null,
    "successor": {
      "slug": "thierry-porte",
      "name": "ティエリー ポルテ",
      "api_url": "https://the-shashi.com/api/8303/ceo/thierry-porte.json"
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}