大株主
| （単位：千株） | 2015/10 | 2016/10 | 2017/10 | 2018/10 | 2019/10 | 2020/10 | 2021/10 | 2022/10 | 2023/10 | 2024/10 |
|---|---|---|---|---|---|---|---|---|---|---|
| 中山 輝也 | 1,154 19.33% | 1,000 16.75% | 1,000 16.75% | 1,000 17.86% | 820 14.64% | 820 14.64% | 820 14.64% | 820 14.64% | 820 14.64% | 820 14.64% |
| 中山 正子 | 272 4.56% | 431 7.22% | 435 7.29% | 439 7.84% | 443 7.91% | 447 7.99% | 451 8.05% | 455 8.13% | 459 8.2% | 462 8.26% |
| 東京中小企業投資育成 | 233 3.91% | 233 3.91% | 233 3.91% | 233 4.17% | 233 4.17% | 233 4.17% | 233 4.17% | 233 4.17% | 231 4.13% | 231 4.13% |
| 第四北越銀行 | 278 4.96% | 278 4.96% | 278 4.96% | 218 3.89% | ||||||
| キタック社員持株会 | 272 4.56% | 268 4.5% | 242 4.06% | 226 4.04% | 234 4.19% | 234 4.19% | 220 3.93% | 207 3.7% | 208 3.72% | 210 3.76% |
| 公益財団法人知足美術館 | 203 3.63% | 203 3.63% | 203 3.63% | 203 3.63% | 203 3.63% | 203 3.63% | ||||
| 中山 道子 | 197 3.3% | 197 3.3% | 197 3.3% | 197 3.52% | 197 3.52% | 197 3.52% | 197 3.52% | 197 3.52% | 197 3.52% | 197 3.52% |
| 五十嵐 英輝 | 526 8.82% | 520 8.72% | 270 4.53% | 230 4.12% | 205 3.67% | 190 3.41% | 190 3.41% | 190 3.41% | 190 3.4% | 190 3.41% |
| ナカノアイシステム | 155 2.77% | 181 3.23% | 181 3.23% | 181 3.23% | 181 3.23% | 181 3.23% | 181 3.23% | |||
| パシフィックコンサルタンツ | 181 3.23% | 181 3.23% | 181 3.23% | 181 3.23% | 181 3.23% | |||||
| 第四銀行 | 278 4.65% | 278 4.65% | 278 4.65% | 278 4.96% | 278 4.96% | 278 4.96% | ||||
| パシフィックコンサルタンツグループ | 181 3.03% | 181 3.03% | 181 3.03% | 181 3.23% | 181 3.23% | |||||
| 中山 和子 | 203 3.4% | 203 3.4% | 203 3.4% | 203 3.63% | ||||||
| キタック | 368 6.17% | 368 6.17% | 368 6.17% | |||||||
| 計 | 3,686 61.76% | 3,682 61.69% | 3,410 57.13% | 3,144 56.15% | 2,977 53.17% | 2,966 52.98% | 2,956 52.78% | 2,947 52.63% | 2,950 52.7% | 2,896 51.71% |