{
  "spec_version": "5",
  "endpoint": "director",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/outside-directors/okano-sadahiko/",
  "api_url": "/api/directors/okano-sadahiko.json",
  "updated": "2026-10-13",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/outside-directors/okano-sadahiko/",
  "source": {
    "person": {
      "primary": [
        "コーポレート・ガバナンス報告書（社外取締役の属性・独立役員）",
        "有価証券報告書（役員の状況・略歴）",
        "招集通知・臨時報告書（選任議案の賛成比率）"
      ],
      "extraction": "各社の最新の CG 報告書と有報の役員の表から機械抽出し、漢字の氏名＋生年月で会社をまたいで名寄せ",
      "caveat": "兼務先は最新の断面（有報の役員の表が最新から 400 日以内）。経歴の行ごとの出典は refs が sources の id を指す"
    }
  },
  "person": {
    "slug": "okano-sadahiko",
    "name": "岡野貞彦",
    "last_name": "岡野",
    "first_name": "貞彦",
    "romaji": "Okano Sadahiko",
    "last_name_romaji": "Okano",
    "first_name_romaji": "Sadahiko",
    "birth": "1958-11",
    "directorships": [
      {
        "stock_code": "8609",
        "company_name": "岡三証券グループ",
        "role": "取締役（監査等委員）",
        "start_at": "2026-03",
        "end_at": null,
        "independent": null,
        "attribute": "その他",
        "votes": [
          {
            "month": "2025/6",
            "ratio": 98
          }
        ],
        "company_html_url": "https://the-shashi.com/tse/8609/"
      }
    ],
    "career": [
      {
        "ym": "1981-04",
        "kind": "他",
        "org": "社団法人経済同友会",
        "stock_code": null,
        "role": "事務局入局(総務、代表幹事・専務理事秘書)",
        "current": false,
        "row_text": "社団法人経済同友会事務局入局(総務、代表幹事・専務理事秘書)",
        "refs": [
          "r1"
        ]
      },
      {
        "ym": "1985-05",
        "kind": "他",
        "org": "社団法人経済同友会",
        "stock_code": null,
        "role": "主事(企画調査、国際経済担当)",
        "current": false,
        "row_text": "同会主事(企画調査、国際経済担当)",
        "refs": [
          "r1"
        ]
      },
      {
        "ym": "1987-08",
        "kind": "大学・研究",
        "org": "イリノイ大学",
        "stock_code": null,
        "role": "(米国)大学院留学",
        "current": false,
        "row_text": "イリノイ大学(米国)大学院留学",
        "refs": [
          "r1"
        ]
      },
      {
        "ym": "1989-06",
        "kind": "他",
        "org": "社団法人経済同友会",
        "stock_code": null,
        "role": "主事(国際事業兼企画調査)",
        "current": false,
        "row_text": "社団法人経済同友会主事(国際事業兼企画調査)",
        "refs": [
          "r1"
        ]
      },
      {
        "ym": "1993-05",
        "kind": "他",
        "org": "社団法人経済同友会",
        "stock_code": null,
        "role": "参事(国際担当)",
        "current": false,
        "row_text": "同会参事(国際担当)",
        "refs": [
          "r1"
        ]
      },
      {
        "ym": "1997-05",
        "kind": "他",
        "org": "社団法人経済同友会",
        "stock_code": null,
        "role": "参事(企画調査担当、代表幹事補佐)",
        "current": false,
        "row_text": "同会参事(企画調査担当、代表幹事補佐)",
        "refs": [
          "r1"
        ]
      },
      {
        "ym": "2001-05",
        "kind": "他",
        "org": "社団法人経済同友会",
        "stock_code": null,
        "role": "副理事・企画部長",
        "current": false,
        "row_text": "同会副理事・企画部長",
        "refs": [
          "r1"
        ]
      },
      {
        "ym": "2005-05",
        "kind": "他",
        "org": "社団法人経済同友会",
        "stock_code": null,
        "role": "副理事・執行役",
        "current": false,
        "row_text": "同会副理事・執行役",
        "refs": [
          "r1"
        ]
      },
      {
        "ym": "2011-04",
        "kind": "他",
        "org": "(公社)経済同友会",
        "stock_code": null,
        "role": "常務理事",
        "current": false,
        "row_text": "(公社)経済同友会常務理事",
        "refs": [
          "r1"
        ]
      },
      {
        "ym": "2021-04",
        "kind": "他",
        "org": "(公社)経済同友会",
        "stock_code": null,
        "role": "常務理事・事務局長",
        "current": false,
        "row_text": "同会常務理事・事務局長",
        "refs": [
          "r1"
        ]
      },
      {
        "ym": "2022-04",
        "kind": "他",
        "org": "(公社)経済同友会",
        "stock_code": null,
        "role": "事務 局長・代表理事",
        "current": false,
        "row_text": "同会事務局長・代表理事",
        "refs": [
          "r1"
        ]
      },
      {
        "ym": "2024-04",
        "kind": "他",
        "org": "(公社)経済同友会",
        "stock_code": null,
        "role": "常勤顧問",
        "current": false,
        "row_text": "同会常勤顧問",
        "refs": [
          "r1"
        ]
      },
      {
        "ym": "2025-05",
        "kind": "他",
        "org": "(公社)経済同友会",
        "stock_code": null,
        "role": "事務局 顧問",
        "current": false,
        "row_text": "同会事務局顧問",
        "refs": [
          "r1"
        ]
      },
      {
        "ym": "2025-06",
        "kind": "民間",
        "org": "岡三証券グループ",
        "stock_code": "8609",
        "role": "社外取締役(監査等委員)",
        "current": true,
        "row_text": "岡三証券社外取締役(監査等委員)就任(現任)",
        "refs": [
          "r1"
        ]
      }
    ],
    "sources": [
      {
        "id": "r1",
        "type": "有価証券報告書",
        "title": "有価証券報告書",
        "by": "岡三証券グループ",
        "date": "2026-06-26",
        "url": null,
        "note": "役員の状況"
      }
    ],
    "api_url": "https://the-shashi.com/api/directors/okano-sadahiko.json",
    "list_api_url": "https://the-shashi.com/api/directors.json",
    "html_url": "https://the-shashi.com/outside-directors/okano-sadahiko/"
  }
}
