SOUTH KOREA · OPENDART
S&SYS CO.,LTD
에스엔시스 · 0008Z0 · KOSDAQ · Industrials · Aerospace & Defense
Score
61.3
Insider timeline
3 insiders bought in the last 180 days, each once and more than 15 days apart.
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, −47.7% over these six months
The closing price of each day, from 41,500.00 on 2026-04-21 to 21,700.00 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 −47.7%, the typical one −31.9%, 15.8 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 |
|---|---|---|---|---|---|---|
| SU-HYUNG JUNG | Executive | 1 | — | 31.1M KRW | 2026-06-02 | −16.4% |
| SANG-YUN KANG | Executive | 1 | — | 27.9M KRW | 2026-07-02 | −4.8% |
| SUN-JANG KIM | Executive | 1 | — | 21.4M KRW | 2026-07-28 | +3.6% |
Insiders' buying price vs the latest close
Insiders paid 27,853.54 KRW a share on average (16 purchase lines, 7 buyers, 2026-01-05 – 2026-07-28). The close on 2026-10-16 was 22.1% below that price.
The latest purchase (2026-07-28) was at 21,379.80 KRW; the close was 1.5% 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.
| Trade date | Insider | Role | Trade | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-07-28 | SUN-JANG KIM | Managing director | Bought on the exchange | 797 | ₩21,400 | ₩17.1M | DART ↗ |
| 2026-07-28 | SUN-JANG KIM | Managing director | Bought on the exchange | 2 | ₩21,350 | ₩42,700 | DART ↗ |
| 2026-07-28 | SUN-JANG KIM | Managing director | Bought on the exchange | 99 | ₩21,300 | ₩2.1M | DART ↗ |
| 2026-07-28 | SUN-JANG KIM | Managing director | Bought on the exchange | 102 | ₩21,300 | ₩2.2M | DART ↗ |
| 2026-07-02 | SANG-YUN KANG | Managing director | Bought on the exchange | 3 | ₩22,900 | ₩68,700 | DART ↗ |
| 2026-07-02 | SANG-YUN KANG | Managing director | Bought on the exchange | 1,208 | ₩23,000 | ₩27.8M | DART ↗ |
| 2026-06-02 | SU-HYUNG JUNG | Senior managing director | Bought on the exchange | 600 | ₩25,850 | ₩15.5M | DART ↗ |
| 2026-06-02 | SU-HYUNG JUNG | Senior managing director | Bought on the exchange | 600 | ₩25,900 | ₩15.5M | DART ↗ |
| 2026-03-23 | JI-CHANG JEONG | Vice president | Bought on the exchange | 500 | ₩28,650 | ₩14.3M | DART ↗ |
| 2026-03-20 | JI-CHANG JEONG | Vice president | Bought on the exchange | 500 | ₩30,125 | ₩15.1M | DART ↗ |
| 2026-03-19 | JI-CHANG JEONG | Vice president | Bought on the exchange | 836 | ₩29,867 | ₩25.0M | DART ↗ |
| 2026-03-17 | JI-CHANG JEONG | Vice president | Bought on the exchange | 164 | ₩30,000 | ₩4.9M | DART ↗ |
| 2026-03-04 | HONG-KYU PARK | Managing director | Bought on the exchange | 1,028 | ₩26,405 | ₩27.1M | DART ↗ |
| 2026-01-21 | YOUNG-HUN KIM | Managing director | Bought on the exchange | 1,000 | ₩32,400 | ₩32.4M | DART ↗ |
| 2026-01-20 | SANG-YUN KANG | Managing director | Bought on the exchange | 1,049 | ₩33,600 | ₩35.2M | DART ↗ |
| 2026-01-05 | SU-HYUNG JEONG | Senior managing director | Bought on the exchange | 988 | ₩29,950 | ₩29.6M | DART ↗ |
Other changes in holdings · 17
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 |
|---|---|---|---|---|---|
| 2026-05-13 | WOI-YEAL HWANG | CEO | Donation(-) | 3,000 | DART ↗ |
| 2026-03-17 | JAE-HYUCK BAE | CEO | Off-hour trading(-) | 45,440 | DART ↗ |
| 2026-03-17 | WOI-YEAL HWANG | CEO | Off-hour trading(-) | 15,680 | DART ↗ |
| 2026-03-17 | TAE-KYUNG CHUNG | President | Off-hour trading(-) | 19,680 | DART ↗ |
| 2026-03-17 | TAE-YOUNG LEE | President | Off-hour trading(-) | 19,680 | DART ↗ |
| 2026-01-01 | WOONG-SOO KIM | Managing director | New appointment(+) | 60,800 | DART ↗ |
| 2026-01-01 | YOUNG-HUN KIM | Managing director | New appointment(+) | 8,100 | DART ↗ |
| 2026-01-01 | SUN-JANG KIM | Managing director | New appointment(+) | 32,874 | DART ↗ |
| 2025-08-19 | Samsung Heavy Industries Co.,LTD | 10% shareholder | New listing(+) | 1,415,000 | DART ↗ |
| 2025-08-19 | HONG-KYU PARK | Managing director | New listing(+) | 54,972 | DART ↗ |
| 2025-08-19 | HONG-KYU PARK | Managing director | Others(+) | 2 | DART ↗ |
| 2025-08-19 | SU-HYUNG JEONG | Managing director | New listing(+) | 68,012 | DART ↗ |
| 2025-08-19 | SANG-YUN KANG | Managing director | New listing(+) | 68,951 | DART ↗ |
| 2025-08-19 | WOI-YEAL HWANG | Vice president | New listing(+) | 492,000 | DART ↗ |
| 2025-08-19 | TAE-YOUNG LEE | Vice president | New listing(+) | 492,000 | DART ↗ |
| 2025-08-19 | TAE-KYUNG CHUNG | Vice president | New listing(+) | 492,000 | DART ↗ |
| 2025-08-19 | JAE-HYUCK BAE | CEO | New listing(+) | 1,136,000 | DART ↗ |