As reported in the annual securities report, 2026-03-31.
| Foreign institutions | 1.82% |
|---|---|
| Individuals | 34.82% |
| Top 10 holders | 60.20% |
| Total shareholders | 3,268 |
How to read this: each slice is a group of investors. Foreign and financial institutions are professional money; individuals are retail shareholders; other corporations are usually business partners holding strategic stakes. A large institutional slice generally means heavier analyst coverage and more trading volume.
How to read this: each line shows how one investor group's share has moved over recent years. A rising foreign or institutional line can signal growing professional interest; a falling one the opposite. Japanese companies disclose ownership once a year, so these are annual points — read the direction over several years rather than a single step.
| Investor category | Holding % | Shareholders |
|---|---|---|
| Other corporations | 45.22% | 97 |
| Individuals & others | 34.82% | 3,098 |
| Financial institutions | 17.71% | 9 |
| Foreign institutions | 1.82% | 34 |
| Securities firms | 0.32% | 18 |
| Foreign individuals | 0.11% | 12 |
How to read this: a high foreign or institutional share often means the stock is widely researched and more liquid; a high individual share means retail investors hold most of the company. Percentages are of voting units.
| S.No. | Shareholder | Shares | Stake % |
|---|---|---|---|
| 1 | 株式会社八木熊 | 2,574,000 | 13.01% |
| 2 | 長瀬産業株式会社 | 2,464,000 | 12.45% |
| 3 | 株式会社日本カストディ銀行 (三井住友信託銀行再信託分・三井化学株式会社退職給付信託口) | 1,856,000 | 9.38% |
| 4 | 三井物産プラスチック株式会社 | 983,000 | 4.97% |
| 5 | 八 木 誠一郎 | 830,000 | 4.19% |
| 6 | 株式会社福井銀行 | 710,000 | 3.59% |
| 7 | 昭和興産株式会社 | 670,000 | 3.38% |
| 8 | 株式会社北陸銀行 | 625,000 | 3.16% |
| 9 | フクビ化学工業従業員持株会 | 601,000 | 3.04% |
| 10 | 蝶理株式会社 | 600,000 | 3.03% |
Trust banks such as Master Trust and Custody Bank appear at the top of most Japanese registers: they hold shares on behalf of many underlying funds rather than owning them outright.