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 |
|---|---|---|---|---|---|---|---|---|---|---|
| エスジェーエス | 7,267 33.4% | 7,267 33.4% | 7,267 33.41% | 7,267 33.41% | 7,267 33.41% | 7,267 33.41% | 7,267 33.41% | 9,003 41.39% | 9,003 41.39% | 8,401 39.72% |
| 原田 章二 | 2,354 10.82% | 2,354 10.82% | 2,354 10.82% | 2,354 10.82% | 2,354 10.82% | 2,354 10.82% | 2,354 10.82% | 2,354 10.82% | 2,354 10.82% | 2,354 11.13% |
| 原田 恵吾 | 224 1.03% | 427 1.96% | 454 2.09% | 454 2.09% | 478 2.2% | 501 2.31% | 523 2.41% | 996 4.58% | 996 4.58% | 996 4.71% |
| 原田 恭子 | 612 2.82% | 612 2.82% | 612 2.9% | |||||||
| りそな銀行 | 600 2.76% | 600 2.76% | 600 2.76% | 600 2.76% | 600 2.76% | 600 2.76% | 600 2.76% | 600 2.76% | 600 2.76% | 600 2.84% |
| 日本生命保険相互会社 | 310 1.42% | 310 1.42% | 310 1.43% | 310 1.43% | 310 1.43% | 310 1.43% | 310 1.43% | 310 1.43% | 310 1.43% | 310 1.47% |
| 三菱UFJ銀行 | 300 1.38% | 300 1.38% | 300 1.38% | 300 1.38% | 300 1.38% | 300 1.38% | 300 1.42% | |||
| 原田 悠吾 | 201 0.93% | 201 0.93% | 201 0.95% | |||||||
| みずほ銀行 | 200 0.92% | 200 0.92% | 200 0.92% | 200 0.92% | 200 0.92% | 200 0.92% | 200 0.92% | 200 0.95% | ||
| 原田工業従業員持株会 | 450 2.07% | 405 1.86% | 356 1.64% | 352 1.62% | 311 1.43% | 309 1.42% | 262 1.2% | 160 0.76% | ||
| 日本マスタートラスト信託銀行 | 359 1.65% | 219 1.01% | 413 1.9% | 283 1.3% | 746 3.43% | 557 2.56% | 287 1.32% | |||
| 原田 修一 | 3,169 14.57% | 2,966 13.63% | 2,939 13.51% | 2,939 13.51% | 2,914 13.4% | 2,891 13.29% | 2,869 13.19% | |||
| あいおいニッセイ同和損害保険 | 180 0.83% | |||||||||
| 日本トラスティ・サービス信託銀行 | 902 4.15% | 946 4.35% | ||||||||
| 三菱東京UFJ銀行 | 300 1.38% | 300 1.38% | 300 1.38% | |||||||
| 佐久間 秀樹 | 208 0.96% | |||||||||
| 計 | 15,083 69.33% | 15,892 73.04% | 15,746 72.4% | 14,957 68.77% | 15,149 69.65% | 15,017 69.05% | 15,433 70.96% | 15,136 69.59% | 14,865 68.35% | 14,136 66.83% |