SOUTH KOREA · OPENDART
YMT CO., LTD.
와이엠티 · 251370 · KOSDAQ · Basic Materials · Chemicals
Score
39.7
Insider timeline
One insider bought, 4 times, the latest (26 Jun). The share closed at 10,000.00 that day and at 7,510.00 most recently (−24.9%).
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, −56.9% over these six months
The closing price of each day, from 17,440.00 on 2026-04-21 to 7,510.00 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, −31.9%
Taken from the 1525 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 −56.9%, the typical one −31.9%, 25.1 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 |
|---|---|---|---|---|---|---|
| LEE HONG KI | Board member | 4 | — | 7.0M KRW | 2026-06-02 | −46.0% |
Insiders' buying price vs the latest close
Insiders paid 11,974.83 KRW a share on average (6 purchase lines, 1 buyer, 2026-03-19 – 2026-06-26). The close on 2026-10-16 was 37.3% below that price.
The latest purchase (2026-06-26) was at 9,970.00 KRW; the close was 24.7% 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 |
|---|---|---|---|---|---|---|---|
| 2026-06-26 | LEE HONG KI | Director | Bought on the exchange | 100 | ₩9,970 | ₩997,000 | DART ↗ |
| 2026-06-25 | LEE HONG KI | Director | Bought on the exchange | 200 | ₩11,150 | ₩2.2M | DART ↗ |
| 2026-06-08 | LEE HONG KI | Director | Bought on the exchange | 200 | ₩12,290 | ₩2.5M | DART ↗ |
| 2026-06-02 | LEE HONG KI | Director | Bought on the exchange | 100 | ₩13,394 | ₩1.3M | DART ↗ |
| 2026-03-23 | LEE HONG KI | Director | Bought on the exchange | 100 | ₩12,240 | ₩1.2M | DART ↗ |
| 2026-03-19 | LEE HONG KI | Director | Bought on the exchange | 190 | ₩12,680 | ₩2.4M | DART ↗ |
Other changes in holdings · 5
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 |
|---|---|---|---|---|---|
| 2026-04-10 | CHUN SUNG WOOK | CEO | Treasury stock bonus(+) | 5,577 | DART ↗ |
| 2026-04-10 | KIM KYUN ROCK | CEO | Treasury stock bonus(+) | 1,760 | DART ↗ |
| 2025-04-04 | Han Young Tai | Auditor | New report(+) | 23,507 | DART ↗ |
| 2020-08-20 | CHUN SUNG WOOK | CEO | 무상신주취득(+) | 2,560,000 | DART ↗ |
| 2018-01-19 | CHUN SUNG WOOK | CEO | 무상신주취득(+) | 1,280,000 | DART ↗ |