SOUTH KOREA · OPENDART
DONGSUNG CHEMICAL Co., Ltd.
동성케미컬 · 102260 · KOSPI · Basic Materials · Chemicals
Score
49.3
Insider timeline
2 insiders bought within 9 days, 25 Jun to 3 Jul: 2 CEO / chair. 1 of them bought again later. The share closed at 3,470.00 on the first of those days and at 3,590.00 most recently (+3.5%).
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.
▮Purple band: several insiders bought within 15 days
The band marks the stretch with the most different buyers: at most 15 days long and at least two people. Here it is 25 Jun – 3 Jul, with 2 insiders. Only the strongest stretch is marked. Several people deciding the same thing is harder to explain by one person's private reasons, but insiders often buy together just after a closed period ends, so compare it with the grey weekly bars.
Blue line: this share's price, −17.9% over these six months
The closing price of each day, from 4,375.00 on 2026-04-21 to 3,590.00 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 −17.9%, the typical one −20.4%, 2.4 points ahead. 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 |
|---|---|---|---|---|---|---|
| LEE MANWOO | CEO / chair | 1 | — | 3.5M KRW | 2026-06-25 | +3.5% |
| Jin Woo Baek | CEO / chair | 2 | — | 19.9M KRW | 2026-07-03 | −0.4% |
Insiders' buying price vs the latest close
Insiders paid 3,854.07 KRW a share on average (5 purchase lines, 2 buyers, 2026-01-05 – 2026-10-06). The close on 2026-10-16 was 6.9% below that price.
The latest purchase (2026-10-06) was at 3,685.00 KRW; the close was 2.6% 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 |
|---|---|---|---|---|---|---|---|
| 2026-10-06 | Jin Woo Baek | CEO | Bought on the exchange | 2,699 | ₩3,685 | ₩9.9M | DART ↗ |
| 2026-07-03 | Jin Woo Baek | CEO | Bought on the exchange | 2,788 | ₩3,569 | ₩10.0M | DART ↗ |
| 2026-06-25 | LEE MANWOO | CEO | Bought on the exchange | 1,000 | ₩3,500 | ₩3.5M | DART ↗ |
| 2026-04-03 | Jin Woo Baek | CEO | Bought on the exchange | 2,350 | ₩4,235 | ₩10.0M | DART ↗ |
| 2026-01-05 | Jin Woo Baek | CEO | Bought on the exchange | 2,399 | ₩4,150 | ₩10.0M | DART ↗ |
Other changes in holdings · 19
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 |
|---|---|---|---|---|---|
| 2026-03-26 | DSTI CO., LTD | 10% shareholder | Stock dividend(+) | 208,514 | DART ↗ |
| 2026-03-26 | Jin Woo Baek | CEO | Stock dividend(+) | 880 | DART ↗ |
| 2026-03-26 | LEE MANWOO | CEO | Stock dividend(+) | 90 | DART ↗ |
| 2026-03-26 | Shin Sunghee | Vice president | Stock dividend(+) | 35 | DART ↗ |
| 2026-03-26 | Cho Seongwon | Vice president | Stock dividend(+) | 50 | DART ↗ |
| 2026-03-26 | HA JAE RYANG | Managing director | Stock dividend(+) | 33 | DART ↗ |
| 2026-03-26 | SHIN HEONG CHEOL | Managing director | Stock dividend(+) | 73 | DART ↗ |
| 2026-03-26 | JUNG DEOG WOO | Managing director | Stock dividend(+) | 10 | DART ↗ |
| 2026-03-26 | LEE YEON JU | Managing director | Stock dividend(+) | 7 | DART ↗ |
| 2026-01-01 | LEE YEON JU | Managing director | New appointment(+) | 770 | DART ↗ |
| 2025-03-27 | NOH JOONGSIK | Managing director | Stock dividend(+) | 222 | DART ↗ |
| 2025-03-27 | JUNG DEOG WOO | Managing director | Stock dividend(+) | 9 | DART ↗ |
| 2025-03-27 | SHIN HEONG CHEOL | Managing director | Stock dividend(+) | 73 | DART ↗ |
| 2025-03-27 | HA JAE RYANG | Managing director | Stock dividend(+) | 33 | DART ↗ |
| 2025-03-27 | Cho Seongwon | Vice president | Stock dividend(+) | 50 | DART ↗ |
| 2025-03-27 | Shin Sunghee | Vice president | Stock dividend(+) | 35 | DART ↗ |
| 2025-03-27 | LEE MANWOO | CEO | Stock dividend(+) | 90 | DART ↗ |
| 2025-03-27 | Jin Woo Baek | CEO | Stock dividend(+) | 773 | DART ↗ |
| 2025-03-27 | DSTI CO., LTD | 10% shareholder | Stock dividend(+) | 206,450 | DART ↗ |