大株主の所有状況（株式数、持株比率）
[{"name":"東日本旅客鉄道株式会社","value":3632000,"percentage":"19.35"},{"name":"旭調査設計株式会社","value":1434000,"percentage":"7.64"},{"name":"第一建設工業社員持株会","value":1391000,"percentage":"7.41"},{"name":"ビービーエイチ フォー フィデリティ ロー プライス ストック ファンド（常任代理人 株式会社三菱UFJ銀行）","value":879000,"percentage":"4.68"},{"name":"東鉄工業株式会社","value":511000,"percentage":"2.72"},{"name":"株式会社第四北越銀行","value":467000,"percentage":"2.49"},{"name":"第一建設工業互助会","value":463000,"percentage":"2.46"},{"name":"株式会社北陸銀行","value":449000,"percentage":"2.39"},{"name":"THE HONGKONG AND SHANGHAI BANKING CORPORATION LIMITED - HONG KONG PRIVATE BANKING DIVISION CLIENT A/C 8028-394841（常任代理人 香港上海銀行東京支店 カストディ業務部）","value":441000,"percentage":"2.35"},{"name":"名工建設株式会社","value":437000,"percentage":"2.32"}]
上位10株主の持株比率合計は53.81%です。
所有者別構成（単元数、持株比率）
[{"name":"その他の法人","value":85338,"percentage":"40.97"},{"name":"個人その他","value":79250,"percentage":"38.05"},{"name":"個人以外","value":0,"percentage":"12.15"},{"name":"金融機関","value":17716,"percentage":"8.51"},{"name":"金融商品取引業者","value":636,"percentage":"0.31"},{"name":"個人","value":0,"percentage":"0.01"}]