Stock Trading Canary

Built: 2026-10-19T16:02:49+00:00 · 中文

← South Korea

SOUTH KOREA · OPENDART

DOWOOINSYS Co., LTD.

도우인시스 · 484120 · KOSDAQ · Technology · Electronic Components

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.

Cha Gyeong-yongCha Gyeong-yongMember of the executive committeeExecutiveCha Jin-gyuCha Jin-gyuMember of the executive committeeExecutive2026-09-23 · Cha Gyeong-yong · sale · 24,700,000 KRW2026-09-23 · Cha Jin-gyu · sale · 47,000,000 KRW2026-10-08 · Cha Jin-gyu · sale · 22,032,000 KRW2026-10-12 · Cha Jin-gyu · sale · 24,000,000 KRWMayJunJulAugSepOct

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, +12.1% over these six months

The closing price of each day, from 21,400.00 on 2026-04-21 to 24,000.00 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 +12.1%, the typical one −31.9%, 44.0 points ahead. It is not an index and not a comparison within one industry.

Who traded

InsiderRolePurchasesSalesBoughtFirst purchaseShare price since
Cha Gyeong-yongExecutive—1———
Cha Jin-gyuExecutive—3———

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 dateInsiderRoleTradeSharesPriceValueFiling
2026-10-12Cha Jin-gyuExecutiveSold on the exchange1,000₩24,000₩24.0MDART ↗
2026-10-08Cha Jin-gyuExecutiveSold on the exchange918₩24,000₩22.0MDART ↗
2026-09-23Cha Jin-gyuExecutiveSold on the exchange2,000₩23,500₩47.0MDART ↗
2026-09-23Cha Gyeong-yongExecutiveSold on the exchange1,000₩24,700₩24.7MDART ↗
2026-02-20Cha Jin-gyuExecutiveSold on the exchange253₩24,450₩6.2MDART ↗
2026-02-10Cha Jin-gyuExecutiveSold on the exchange1,000₩24,600₩24.6MDART ↗
2026-02-09Cha Jin-gyuExecutiveSold on the exchange262₩24,100₩6.3MDART ↗
2026-02-09Cha Jin-gyuExecutiveSold on the exchange738₩24,300₩17.9MDART ↗
2026-01-30Song Yeong-namExecutiveSold on the exchange300₩24,400₩7.3MDART ↗
2026-01-30Song Yeong-namExecutiveSold on the exchange290₩24,200₩7.0MDART ↗
2026-01-30Song Yeong-namExecutiveSold on the exchange100₩24,450₩2.4MDART ↗
2026-01-30Song Yeong-namExecutiveSold on the exchange100₩24,500₩2.5MDART ↗
2026-01-28Cha Jin-gyuExecutiveSold on the exchange500₩25,450₩12.7MDART ↗
2026-01-28Cha Jin-gyuExecutiveSold on the exchange500₩25,550₩12.8MDART ↗
2026-01-28Cha Jin-gyuExecutiveSold on the exchange122₩25,600₩3.1MDART ↗
2026-01-28Song Yeong-namExecutiveSold on the exchange500₩24,700₩12.3MDART ↗
2026-01-28Song Yeong-namExecutiveSold on the exchange500₩25,000₩12.5MDART ↗
2026-01-28Song Yeong-namExecutiveSold on the exchange500₩25,350₩12.7MDART ↗
2026-01-28Song Yeong-namExecutiveSold on the exchange500₩25,500₩12.8MDART ↗
2026-01-28Song Yeong-namExecutiveSold on the exchange320₩24,300₩7.8MDART ↗
2026-01-28Song Yeong-namExecutiveSold on the exchange300₩24,450₩7.3MDART ↗
2026-01-28Song Yeong-namExecutiveSold on the exchange500₩25,600₩12.8MDART ↗
2026-01-27Song Yeong-namExecutiveSold on the exchange190₩23,800₩4.5MDART ↗
2026-01-26Cha Jin-gyuExecutiveSold on the exchange300₩24,200₩7.3MDART ↗
2026-01-26Cha Jin-gyuExecutiveSold on the exchange300₩24,300₩7.3MDART ↗
2026-01-23Cha Jin-gyuExecutiveSold on the exchange10₩24,100₩241,000DART ↗
Other changes in holdings · 18

Option exercises, grants, new shares, inheritance, gifts, off-exchange trades and trades by companies and funds. Not counted in the score.

DateInsiderRoleReasonSharesFiling
2026-04-01Choi Gyu-hoOffice headNew appointment(+)200DART ↗
2026-03-31General Partner:Samsung Venture Investment Corporation.10% shareholderDisposal in OTC(-)484,664DART ↗
2026-03-31New Power Plasma Co.,LTD.10% shareholderAcquisition in OTC(+)0DART ↗
2026-01-08Song Yeong-namExecutiveExercise of appraisal rights(+)10,000DART ↗
2026-01-08Cha Gyeong-yongExecutiveExercise of appraisal rights(+)10,000DART ↗
2026-01-08Lee Hyeong-seopExecutiveExercise of appraisal rights(+)4,000DART ↗
2026-01-08Cha Jin-gyuExecutiveExercise of appraisal rights(+)13,000DART ↗
2025-12-05Cha Jin-gyuExecutiveExercise of appraisal rights(+)17,000DART ↗
2025-12-05Song Yeong-namExecutiveExercise of appraisal rights(+)10,000DART ↗
2025-12-05Cha Gyeong-yongExecutiveExercise of appraisal rights(+)10,000DART ↗
2025-12-05Park Chan-juExecutiveExercise of appraisal rights(+)20,000DART ↗
2025-12-05Lee Hyeong-seopExecutiveExercise of appraisal rights(+)12,000DART ↗
2025-07-23UAMCO-Zelkova No.1 Private Equity Fund10% shareholderNew listing(+)1,446,759DART ↗
2025-07-23Kim Eun-sukExecutiveNew listing(+)5,000DART ↗
2025-07-23NP Holdings Co.,Ltd.10% shareholderNew listing(+)831,886DART ↗
2025-07-23SPACEPRO CO.,LTD.10% shareholderNew listing(+)1,447,760DART ↗
2025-07-23New Power Plasma Co.,LTD.10% shareholderNew listing(+)2,969,780DART ↗
2025-07-23General Partner:Samsung Venture Investment Corporation.10% shareholderNew listing(+)1,273,241DART ↗