SOUTH KOREA · OPENDART
WOOJIN INC
우진 · 105840 · KOSPI · Technology · Scientific & Technical Instruments
Score
37.1
Insider timeline
One insider bought, once (22 May). The share closed at 22,100.00 that day and at 10,820.00 most recently (−51.0%).
Tap an item for what it means.
●A purchase: the bigger the dot, the more was bought
Each dot is one insider's purchases on one day. The dot's area follows the amount: the largest purchase here gets the largest dot. Hold the pointer over a dot to see the date and the amount.
Blue line: this share's price, −58.9% over these six months
The closing price of each day, from 26,350.00 on 2026-04-21 to 10,820.00 on 2026-10-16. The line has no scale; read it for high and low: a dot on a low stretch was bought cheaply, a dot on a high stretch was not.
Dashed line: the typical stock on the same exchange, −20.4%
Taken from the 685 other stocks on the same exchange that this site holds prices for. Each is measured from the first day of the window, and every day the middle one is drawn. It starts where the blue line starts, so the gap between the two is the difference: this share −58.9%, the typical one −20.4%, 38.6 points behind. It is not an index and not a comparison within one industry.
This company: insiders buying per month, last 12 months
Darker bars are inside the 180-day window above.
Who traded
| Insider | Role | Purchases | Sales | Bought | First purchase | Share price since |
|---|---|---|---|---|---|---|
| Cho Jae Sung | Executive | 1 | — | 7.1M KRW | 2026-05-22 | −51.0% |
Insiders' buying price vs the latest close
Insiders paid 22,150.00 KRW a share on average (1 purchase line, 1 buyer, 2026-05-22 – 2026-05-22). The close on 2026-10-16 was 51.2% below 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.
| Trade date | Insider | Role | Trade | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-05-22 | Cho Jae Sung | Managing director | Bought on the exchange | 321 | ₩22,150 | ₩7.1M | DART ↗ |
Other changes in holdings · 7
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 |
|---|---|---|---|---|---|
| 2026-01-05 | Lee Jai Sang | CEO | Off-hour trading(-) | 200,000 | DART ↗ |
| 2026-01-05 | Lee Jai Won | Director | Off-hour trading(-) | 200,000 | DART ↗ |
| 2025-12-15 | Cho Jae Sung | Managing director | Treasury stock bonus(+) | 4,679 | DART ↗ |
| 2025-12-15 | Baek Seung Han | CEO | Treasury stock bonus(+) | 8,156 | DART ↗ |
| 2025-12-15 | Lee Jai Sang | CEO | Treasury stock bonus(+) | 11,092 | DART ↗ |
| 2025-12-15 | Lee Jai Won | Director | Treasury stock bonus(+) | 13,642 | DART ↗ |
| 2012-11-20 | Baek Seung Han | CEO | Acquisition of new shares without compensation(+) | 13,371 | DART ↗ |