As reported to FSS/DART, 2025-12-31.
| Largest shareholder group | 51.20% |
|---|---|
| Minority shareholders | 43.66% |
| Top 10 holders | 51.19% |
| Total shareholders | 52,429 |
How to read this: the largest shareholder group is the controlling owner and related parties — a big slice means tight control. Minority shareholders are the many small holders. The remainder is mostly institutional and foreign money, which the regulator does not itemise separately.
| Investor category | Holding % | Shareholders |
|---|---|---|
| Largest shareholder & related parties | 51.20% | — |
| Minority shareholders | 43.66% | 52,426 |
| Institutions & other holders | 5.14% | — |
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 | ㈜에이치에스효성 | 1,247,514 | 27.85% |
| 2 | 조현상 | 1,009,124 | 22.53% |
| 3 | 송광자 | 32,925 | 0.73% |
| 4 | 조인희 | 991 | 0.02% |
| 5 | 조수인 | 991 | 0.02% |
| 6 | 조재하 | 991 | 0.02% |
| 7 | 조양래 | 471 | 0.01% |
| 8 | 이상운 | 460 | 0.01% |
| 9 | 안성훈 | 210 | 0.00% |
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.