SOUTH KOREA · OPENDART
ISTE Co.,Ltd.
아이에스티이 · 212710 · KOSDAQ · Industrials · Specialty Industrial Machinery
Score
Not ranked: no net buying on the exchange by an individual insider in the last 180 days.
Insider timeline
No purchase in the last 180 days; 2 insiders sold.
Tap an item for what it means.
×A sale
A cross is one insider's sales on one day. People sell to pay tax, to cash in share awards or to hold less of one company, so a sale says less than a purchase does. When someone bought and sold on the same day, the cross sits beside the dot. The totals are under “Purchases against sales” below.
Blue line: this share's price, −40.8% over these six months
The closing price of each day, from 8,790.00 on 2026-04-21 to 5,200.00 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 −40.8%, the typical one −31.9%, 9.0 points behind. It is not an index and not a comparison within one industry.
Who traded
| Insider | Role | Purchases | Sales | Bought | First purchase | Share price since |
|---|---|---|---|---|---|---|
| Hur Jung Soo | Executive | — | 4 | — | — | — |
| CHOI DOO HYUN | Board member | — | 2 | — | — | — |
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 |
|---|---|---|---|---|---|---|---|
| 2026-09-18 | Hur Jung Soo | Managing director | Sold on the exchange | 2,000 | ₩6,853 | ₩13.7M | DART ↗ |
| 2026-08-25 | CHOI DOO HYUN | Director | Sold on the exchange | 47 | ₩8,240 | ₩387,280 | DART ↗ |
| 2026-08-25 | Hur Jung Soo | Managing director | Sold on the exchange | 4,159 | ₩8,084 | ₩33.6M | DART ↗ |
| 2026-08-24 | CHOI DOO HYUN | Director | Sold on the exchange | 3,018 | ₩8,216 | ₩24.8M | DART ↗ |
| 2026-08-20 | Hur Jung Soo | Managing director | Sold on the exchange | 2,853 | ₩8,170 | ₩23.3M | DART ↗ |
| 2026-08-14 | Hur Jung Soo | Managing director | Sold on the exchange | 988 | ₩8,109 | ₩8.0M | DART ↗ |
Other changes in holdings · 27
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 |
|---|---|---|---|---|---|
| 2026-06-11 | YANG JUNG OH | Director | Stock options(+) | 4,000 | DART ↗ |
| 2026-06-10 | Seo Kang Seok | Managing director | Stock options(+) | 16,000 | DART ↗ |
| 2026-06-10 | NOH KIL SOO | Managing director | Stock options(+) | 20,000 | DART ↗ |
| 2026-06-10 | Hur Jung Soo | Managing director | Stock options(+) | 20,000 | DART ↗ |
| 2026-06-10 | LEE YOUNG MIN | Senior managing director | Stock options(+) | 28,000 | DART ↗ |
| 2026-01-09 | DAEJEONG. KIM | Senior managing director | Stock options(+) | 40,000 | DART ↗ |
| 2026-01-09 | JIN BYUNGJOO | Vice president | Stock options(+) | 20,000 | DART ↗ |
| 2026-01-09 | Park sungsoo | Vice president | Stock options(+) | 10,000 | DART ↗ |
| 2026-01-09 | Hur Jung Soo | Managing director | Stock options(+) | 20,000 | DART ↗ |
| 2026-01-09 | NOH KIL SOO | Managing director | Stock options(+) | 10,000 | DART ↗ |
| 2026-01-09 | Kim Geun ho | Managing director | Stock options(+) | 3,000 | DART ↗ |
| 2026-01-09 | HYUN JONG SHIN | Managing director | Stock options(+) | 34,000 | DART ↗ |
| 2026-01-09 | CHOI DOO HYUN | Director | Stock options(+) | 26,000 | DART ↗ |
| 2026-01-09 | YANG JUNG OH | Director | Stock options(+) | 20,000 | DART ↗ |
| 2025-10-24 | JIN BYUNGJOO | Vice president | Stock options(+) | 20,000 | DART ↗ |
| 2025-10-24 | YOON SEOK HEE | Vice president | Stock options(+) | 20,000 | DART ↗ |
| 2025-10-24 | Seo Kang Seok | Managing director | Stock options(+) | 10,000 | DART ↗ |
| 2025-10-24 | Kim Geun ho | Managing director | Stock options(+) | 37,000 | DART ↗ |
| 2025-10-24 | NOH KIL SOO | Managing director | Stock options(+) | 10,000 | DART ↗ |
| 2025-10-24 | Park sungsoo | Vice president | Stock options(+) | 20,000 | DART ↗ |
| 2025-06-05 | SHIM HYUN BO | Vice president | Exercise of appraisal rights(+) | 24,000 | DART ↗ |
| 2025-02-12 | CHO CHANG HYEON | CEO | New listing(+) | 4,000,000 | DART ↗ |
| 2025-02-12 | Hur Jung Soo | Managing director | New listing(+) | 28,000 | DART ↗ |
| 2025-02-12 | YANG JUNG OH | Director | New listing(+) | 16,000 | DART ↗ |
| 2025-02-12 | SHIM HYUN BO | Vice president | New listing(+) | 16,000 | DART ↗ |
| 2025-02-12 | NOH KIL SOO | Managing director | New listing(+) | 60,000 | DART ↗ |
| 2025-02-12 | KIM JOOIL | Senior managing director | New listing(+) | 20,000 | DART ↗ |