大株主
| （単位：千株） | 2016/03 | 2017/03 | 2018/03 | 2019/03 | 2020/03 | 2021/03 | 2022/03 | 2023/03 | 2024/03 | 2025/03 |
|---|---|---|---|---|---|---|---|---|---|---|
| 日本マスタートラスト信託銀行 | 2,138 2.42% | 393 2.23% | 628 3.56% | 752 4.27% | 1,343 7.62% | 1,412 8.01% | 1,400 7.94% | 7,542 8.55% | ||
| 東京瓦斯 | 4,274 5.31% | 4,274 5.16% | 4,274 4.85% | 854 4.85% | 854 4.85% | 854 4.85% | 854 4.85% | 854 4.85% | 854 4.85% | 4,274 4.84% |
| 日本生命保険相互会社 | 4,904 6.1% | 4,904 5.92% | 4,904 5.56% | 980 5.57% | 980 5.57% | 980 5.57% | 686 3.89% | 686 3.89% | 686 3.89% | 3,432 3.89% |
| 北海道銀行 | 3,429 4.26% | 3,429 4.14% | 3,429 3.89% | 685 3.89% | 685 3.89% | 685 3.89% | 685 3.89% | 685 3.89% | 685 3.89% | 3,429 3.89% |
| 北洋銀行 | 3,427 4.26% | 3,427 4.14% | 3,427 3.89% | 685 3.89% | 685 3.89% | 685 3.89% | 685 3.89% | 685 3.89% | 685 3.89% | 3,427 3.88% |
| 北海道瓦斯従業員持株会 | 1,599 1.99% | 1,768 2.13% | 1,947 2.21% | 417 2.37% | 448 2.54% | 488 2.77% | 523 2.97% | 561 3.18% | 566 3.21% | 2,770 3.14% |
| ヨシダ トモヒロ | 2,660 3.01% | |||||||||
| みずほ信託銀行 | 2,629 3.27% | 2,629 3.17% | 2,629 2.98% | 525 2.98% | 525 2.98% | 525 2.98% | 525 2.98% | 525 2.98% | 525 2.98% | 2,629 2.98% |
| 北海道信用農業協同組合連合会 | 2,475 3.08% | 2,475 2.99% | 2,475 2.81% | 495 2.81% | 495 2.81% | 495 2.81% | 495 2.81% | 495 2.81% | 495 2.81% | 2,475 2.8% |
| 札幌市 | 2,244 2.79% | 2,244 2.71% | 2,244 2.54% | 448 2.54% | 448 2.54% | 448 2.54% | 448 2.54% | 448 2.54% | 448 2.54% | 2,244 2.54% |
| 吉田 知広 | 448 2.54% | |||||||||
| 日本カストディ銀行 | 1,045 5.93% | 632 3.59% | 680 3.86% | |||||||
| 日本トラスティ・サービス信託銀行 | 2,645 3.29% | 2,485 3% | 4,246 4.82% | 906 5.14% | 1,015 5.76% | |||||
| 第一生命保険 | 1,500 1.86% | 1,500 1.81% | ||||||||
| 計 | 29,130 36.24% | 29,135 35.22% | 31,716 36.01% | 6,394 36.31% | 6,769 38.44% | 6,962 39.54% | 6,882 39.07% | 7,036 39.94% | 6,798 38.57% | 34,886 39.57% |