Stock Trading Canary

Built: 2026-10-19T16:02:49+00:00 · 中文

← South Korea

SOUTH KOREA · OPENDART

BiotoxtechCo.,Ltd.

바이오톡스텍 · 086040 · KOSDAQ · Healthcare · Diagnostics & Research

Score

71.4

Rank 109 of 745 · KR-v1 · as of 2026-10-18

Buyers 35%80
Size 25%56
Role 20%65
Recency 10%64
Conviction 10%100

Insider timeline

3 insiders bought within 13 days, 23 Jul to 4 Aug: 2 Executive, 1 Board member. 1 more bought afterwards. The share closed at 2,175.00 on the first of those days and at 2,085.00 most recently (−4.1%).

Several insiders within 15 days: 2026-07-23 – 2026-08-04Jooyoung ChoiJooyoung ChoiMember of the executive committeeExecutiveJung Su YongJung Su YongMember of the executive committeeExecutiveKang Jong KooKang Jong KooChief Executive OfficerCEO / chairJi-Young KimJi-Young KimDirectorBoard member2026-07-21 · Jooyoung Choi · purchase · 207,500 KRW2026-07-23 · Ji-Young Kim · purchase · 9,290,190 KRW2026-07-24 · Jooyoung Choi · purchase · 889,488 KRW2026-07-27 · Jooyoung Choi · purchase · 448,380 KRW2026-08-04 · Jung Su Yong · purchase · 22,115,954 KRW2026-08-19 · Kang Jong Koo · purchase · 10,064,724 KRW2026-08-20 · Kang Jong Koo · purchase · 8,985,600 KRW2026-08-21 · Kang Jong Koo · purchase · 11,495,400 KRW2026-08-24 · Kang Jong Koo · purchase · 12,017,500 KRW2026-08-25 · Kang Jong Koo · purchase · 11,787,505 KRW2026-08-26 · Kang Jong Koo · purchase · 9,733,360 KRW2026-08-27 · Kang Jong Koo · purchase · 9,463,920 KRW2026-08-28 · Kang Jong Koo · purchase · 6,550,000 KRW2026-08-31 · Kang Jong Koo · purchase · 5,106,120 KRW2026-09-01 · Kang Jong Koo · purchase · 9,619,875 KRW2026-09-02 · Kang Jong Koo · purchase · 5,801,700 KRW2026-09-16 · Kang Jong Koo · purchase · 2,117,700 KRW2026-09-21 · Kang Jong Koo · purchase · 4,100,400 KRWMayJunJulAugSepOct

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 23 Jul – 4 Aug, with 3 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, −36.8% over these six months

The closing price of each day, from 3,300.00 on 2026-04-21 to 2,085.00 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 −36.8%, the typical one −31.9%, 5.0 points behind. It is not an index and not a comparison within one industry.

This company: insiders buying per month, last 12 months

Nov
1Dec
4Jan
1Feb
Mar
Apr
May
Jun
2Jul
2Aug
1Sep
Oct

Darker bars are inside the 180-day window above.

Who traded

InsiderRolePurchasesSalesBoughtFirst purchaseShare price since
Jooyoung ChoiExecutive3—1.5M KRW2026-07-21+1.2%
Jung Su YongExecutive1—22.1M KRW2026-08-04−5.4%
Kang Jong KooCEO / chair13—106.8M KRW2026-08-19−5.7%
Ji-Young KimBoard member1—9.3M KRW2026-07-23−4.1%

Insiders' buying price vs the latest close

Insiders paid 2,506.95 KRW a share on average (24 purchase lines, 5 buyers, 2025-12-08 – 2026-09-21). The close on 2026-10-16 was 16.8% below that price.

The latest purchase (2026-09-21) was at 2,278.00 KRW; the close was 8.5% 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 dateInsiderRoleTradeSharesPriceValueFiling
2026-09-21Kang Jong KooCEOBought on the exchange1,800₩2,278₩4.1MDART ↗
2026-09-16Kang Jong KooCEOBought on the exchange900₩2,353₩2.1MDART ↗
2026-09-02Kang Jong KooCEOBought on the exchange2,330₩2,490₩5.8MDART ↗
2026-09-01Kang Jong KooCEOBought on the exchange3,825₩2,515₩9.6MDART ↗
2026-08-31Kang Jong KooCEOBought on the exchange2,040₩2,503₩5.1MDART ↗
2026-08-28Kang Jong KooCEOBought on the exchange2,620₩2,500₩6.5MDART ↗
2026-08-27Kang Jong KooCEOBought on the exchange3,760₩2,517₩9.5MDART ↗
2026-08-26Kang Jong KooCEOBought on the exchange3,920₩2,483₩9.7MDART ↗
2026-08-25Kang Jong KooCEOBought on the exchange4,885₩2,413₩11.8MDART ↗
2026-08-24Kang Jong KooCEOBought on the exchange5,060₩2,375₩12.0MDART ↗
2026-08-21Kang Jong KooCEOBought on the exchange4,900₩2,346₩11.5MDART ↗
2026-08-20Kang Jong KooCEOBought on the exchange3,900₩2,304₩9.0MDART ↗
2026-08-19Kang Jong KooCEOBought on the exchange4,426₩2,274₩10.1MDART ↗
2026-08-04Jung Su YongVice presidentBought on the exchange10,094₩2,191₩22.1MDART ↗
2026-07-27Jooyoung ChoiManaging directorBought on the exchange212₩2,115₩448,380DART ↗
2026-07-24Jooyoung ChoiManaging directorBought on the exchange426₩2,088₩889,488DART ↗
2026-07-23Ji-Young KimDirectorBought on the exchange4,305₩2,158₩9.3MDART ↗
2026-07-21Jooyoung ChoiManaging directorBought on the exchange100₩2,075₩207,500DART ↗
2026-02-05Jung Su YongVice presidentBought on the exchange19,802₩2,515₩49.8MDART ↗
2026-01-20Jooyoung ChoiManaging directorBought on the exchange3,662₩2,727₩10.0MDART ↗
2026-01-19Jung Su YongVice presidentBought on the exchange18,919₩2,676₩50.6MDART ↗
2026-01-13Park Sun HeeSenior managing directorBought on the exchange7,275₩2,740₩19.9MDART ↗
2026-01-06Ji-Young KimDirectorBought on the exchange3,789₩2,799₩10.6MDART ↗
2025-12-08Jung Su YongSenior managing directorBought on the exchange18,678₩2,636₩49.2MDART ↗
Other changes in holdings · 2

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

DateInsiderRoleReasonSharesFiling
2024-03-29Park Sun HeeSenior managing directorNew appointment(+)1,000DART ↗
2024-03-29Park Sun HeeSenior managing directorNew appointment(+)2,000DART ↗