{
  "spec_version": "5",
  "endpoint": "ceo-person",
  "stock_code": "5404",
  "company_name": "日本鋼管",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/5404/executives/ceo/yamashiro-yoshinari/",
  "api_url": "/api/5404/ceo/yamashiro-yoshinari.json",
  "updated": "2026-10-27",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/5404/executives/ceo/yamashiro-yoshinari/",
  "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": "yamashiro-yoshinari",
    "name": "山城彬成",
    "kana": "やましろ　よしなり",
    "origin": "生え抜き（1947年入社）。京浜製鉄所の管理部長・経理部長を経た財務畑",
    "origin_type": "生え抜き",
    "hometown": "東京都",
    "education": "東京大学法学部 (1946)",
    "prev_role": "副社長",
    "birthdate": "1923",
    "career": [
      {
        "company": "日本鋼管",
        "from": "1947-02",
        "to": null,
        "roles": [
          {
            "date": "1947-02",
            "role": "入社"
          },
          {
            "date": "1971",
            "role": "京浜製鉄所管理部長"
          },
          {
            "date": "1972",
            "role": "企画管理部長"
          },
          {
            "date": "1973",
            "role": "経理部長"
          },
          {
            "date": "1976",
            "role": "取締役"
          },
          {
            "date": "1978",
            "role": "常務取締役"
          },
          {
            "date": "1980",
            "role": "専務取締役"
          },
          {
            "date": "1982",
            "role": "副社長"
          },
          {
            "date": "1985-06",
            "role": "社長",
            "is_ceo_appointed": true
          },
          {
            "date": "1992-06",
            "role": "社長退任",
            "is_ceo_retired": true,
            "retirement_basis": "press"
          }
        ]
      }
    ],
    "references": [
      {
        "source": "日経ビジネス 1985年8月19日号 p82-83 新社長登場 山城彬成氏",
        "for": [
          "kana",
          "career",
          "education",
          "hometown",
          "birthdate"
        ]
      },
      {
        "source": "日経ビジネス 1991年12月9日号 p78-82 編集長インタビュー 山城彬成氏",
        "for": [
          "career"
        ]
      },
      {
        "source": "日経ビジネス 1992年7月6日号 p104-105 新社長登場 三好俊吉氏",
        "for": [
          "career"
        ]
      }
    ],
    "html_url": "https://the-shashi.com/tse/5404/executives/ceo/yamashiro-yoshinari/",
    "term_start": "1985-06",
    "term_end": "1992-06",
    "api_url": "https://the-shashi.com/api/5404/ceo/yamashiro-yoshinari.json",
    "list_api_url": "https://the-shashi.com/api/5404/ceo.json",
    "predecessor": {
      "slug": "kanao-minoru",
      "name": "金尾実",
      "api_url": "https://the-shashi.com/api/5404/ceo/kanao-minoru.json"
    },
    "successor": {
      "slug": "miyoshi-shunkichi",
      "name": "三好俊吉",
      "api_url": "https://the-shashi.com/api/5404/ceo/miyoshi-shunkichi.json"
    }
  }
}