{
  "spec_version": "5",
  "endpoint": "ceo-person",
  "stock_code": "2117",
  "company_name": "ウェルネオシュガー",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/2117/executives/ceo/yamamoto-koji/",
  "api_url": "/api/2117/ceo/yamamoto-koji.json",
  "updated": "2026-10-26",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/2117/executives/ceo/yamamoto-koji/",
  "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": "yamamoto-koji",
    "name": "山本貢司",
    "kana": "やまもと　こうじ",
    "surname": "山本",
    "given_name": "貢司",
    "hometown": null,
    "education": null,
    "prev_role": null,
    "career": [
      {
        "company": "伊藤忠商事株式会社",
        "from": "1991-04",
        "to": null,
        "roles": [
          {
            "date": "1991-04",
            "role": "入社",
            "event": "入社"
          },
          {
            "date": "2014-11",
            "role": "食糧部門食糧戦略室長",
            "dept": "食糧部門食糧戦略室長"
          },
          {
            "date": "2019-04",
            "role": "砂糖・コーヒー・乳製品部長 伊藤忠製糖株式会社取締役（非常勤）"
          }
        ]
      },
      {
        "company": "伊藤忠製糖株式会社",
        "from": "2022-04",
        "to": null,
        "roles": [
          {
            "date": "2022-04",
            "role": "代表取締役社長",
            "board": "代表取締役",
            "title": "社長"
          }
        ]
      },
      {
        "company": "ウェルネオシュガー",
        "from": "2023-01",
        "to": null,
        "roles": [
          {
            "date": "2023-01",
            "role": "代表取締役社長 内部監査室担当 ６月 ウェルネオシュガー代表取締役社長 内部監査室・ネオ機能性素材部担当",
            "is_ceo_appointed": true
          },
          {
            "date": "2024-10",
            "role": "代表取締役社長（現任）",
            "board": "代表取締役",
            "title": "社長",
            "current": true
          }
        ]
      }
    ],
    "references": [
      {
        "source": "ウェルネオシュガー 定時株主総会招集通知（2025年5月・取締役候補者のふりがな）",
        "url": null,
        "for": [
          "kana"
        ]
      }
    ],
    "html_url": "https://the-shashi.com/tse/2117/executives/ceo/yamamoto-koji/",
    "term_start": "2023-01",
    "term_end": null,
    "api_url": "https://the-shashi.com/api/2117/ceo/yamamoto-koji.json",
    "list_api_url": "https://the-shashi.com/api/2117/ceo.json",
    "predecessor": {
      "slug": "大久保亮",
      "name": "大久保亮",
      "api_url": "https://the-shashi.com/api/2117/ceo/大久保亮.json"
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    "successor": null
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}