SOUTH KOREA · OPENDART
JUSUNG ENGINEERING Co.,Ltd.
주성엔지니어링 · 036930 · KOSDAQ · Technology · Semiconductor Equipment & Materials
Score
Not ranked: no net buying on the exchange by an individual insider in the last 180 days.
Insiders' buying price vs the latest close
Insiders paid 29,740.76 KRW a share on average (2 purchase lines, 1 buyer, 2025-11-05 – 2025-12-08). The close on 2026-10-16 was 607.8% above that price.
The latest purchase (2025-12-08) was at 29,063.00 KRW; the close was 624.3% above that price.
Prices paid are weighted by shares and taken from the filings; dividends are not counted. Not scored.
Insider trades on the exchange
Purchases and sales on the exchange in the last 12 months. The filing gives the settlement date; the trade date is two trading days earlier.
Other changes in holdings · 11
Option exercises, grants, new shares, inheritance, gifts, off-exchange trades and trades by companies and funds. Not counted in the score.
| Date | Insider | Role | Reason | Shares | Filing |
|---|---|---|---|---|---|
| 2026-03-09 | Lumiastra Co.,Ltd. | 10% shareholder | Acquisition in exchange(+) | 62,340 | DART ↗ |
| 2026-03-09 | Lumiastra Co.,Ltd. | 10% shareholder | Acquisition in exchange(+) | 62,680 | DART ↗ |
| 2026-03-06 | Lumiastra Co.,Ltd. | 10% shareholder | Acquisition in exchange(+) | 15,115 | DART ↗ |
| 2026-03-06 | Lumiastra Co.,Ltd. | 10% shareholder | Acquisition in exchange(+) | 15,000 | DART ↗ |
| 2026-03-04 | Lumiastra Co.,Ltd. | 10% shareholder | Acquisition in exchange(+) | 67,000 | DART ↗ |
| 2026-03-04 | Lumiastra Co.,Ltd. | 10% shareholder | Acquisition in exchange(+) | 68,181 | DART ↗ |
| 2026-01-27 | Lumiastra Co.,Ltd. | 10% shareholder | Acquisition in exchange(+) | 8,308 | DART ↗ |
| 2026-01-26 | Lumiastra Co.,Ltd. | 10% shareholder | Acquisition in exchange(+) | 55,186 | DART ↗ |
| 2025-12-30 | Lumiastra Co.,Ltd. | 10% shareholder | Acquisition in exchange(+) | 73,767 | DART ↗ |
| 2025-04-28 | Hwang Eun Suk | CEO | New report(+) | 1,049,010 | DART ↗ |
| 2024-12-02 | Lee Woo Kyung | Vice chairman | 신규선임(+) | 1,300 | DART ↗ |