ATON Inc.
KOSDAQ
Shareholding pattern
As reported to FSS/DART, 2025-12-31.
| Largest shareholder group | 30.30% |
|---|---|
| Minority shareholders | 64.09% |
| Top 10 holders | 30.76% |
| Total shareholders | 22,822 |
Who owns the company
Share of shares outstandingMinority shareholders 64.09%Largest shareholder & related parties 30.3%Institutions & other holders 5.61%
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.
Ownership detail
| Investor category | Holding % | Shareholders |
|---|---|---|
| Minority shareholders | 64.09% | 22,816 |
| Largest shareholder & related parties | 30.30% | — |
| Institutions & other holders | 5.61% | — |
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.
Largest shareholders
| S.No. | Shareholder | Shares | Stake % |
|---|---|---|---|
| 1 | 김종서 | 5,768,160 | 23.56% |
| 2 | 이성미 | 963,600 | 3.94% |
| 3 | ㈜폰티스 | 758,750 | 3.10% |
| 4 | 우길수 | 38,300 | 0.16% |
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.