Stock Trading Canary

Built: 2026-10-19T16:02:49+00:00 · 中文

← South Korea

SOUTH KOREA · OPENDART

SyntekaBio,Inc.

신테카바이오 · 226330 · KOSDAQ · Healthcare · Health Information Services

Score

68.5

Rank 137 of 745 · KR-v1 · as of 2026-10-18

Buyers 35%60
Size 25%88
Role 20%65
Recency 10%25
Conviction 10%100

Insider timeline

2 insiders bought on the same day, 26 Jun: 1 Board member, 1 CEO / chair. 1 of them bought again later. 1 more bought afterwards. The share closed at 1,561.00 that day and at 1,090.00 most recently (−30.2%).

Several insiders within 15 days: 2026-06-26 – 2026-06-26Jung Jong SunJung Jong SunChief Executive OfficerCEO / chairHong Jong HuiHong Jong HuiDirectorBoard memberJung Jong ChulJung Jong ChulDirectorBoard member2026-05-11 · Jung Jong Sun · purchase · 106,362,000 KRW2026-05-14 · Jung Jong Sun · purchase · 110,334,000 KRW2026-05-15 · Jung Jong Sun · purchase · 25,150,000 KRW2026-06-23 · Jung Jong Sun · purchase · 46,890,000 KRW2026-06-24 · Jung Jong Sun · purchase · 46,830,000 KRW2026-06-25 · Jung Jong Sun · purchase · 46,890,000 KRW2026-06-26 · Hong Jong Hui · purchase · 70,346,782 KRW2026-06-26 · Jung Jong Sun · purchase · 46,830,000 KRW2026-07-20 · Jung Jong Sun · purchase · 21,361,129 KRW2026-07-24 · Jung Jong Chul · purchase · 11,289,600 KRW2026-07-27 · Jung Jong Chul · purchase · 54,651,821 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 26 Jun, with 2 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, −66.6% over these six months

The closing price of each day, from 3,265.00 on 2026-04-21 to 1,090.00 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 −66.6%, the typical one −31.9%, 34.7 points behind. It is not an index and not a comparison within one industry.

This company: insiders buying per month, last 12 months

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

Darker bars are inside the 180-day window above.

Who traded

InsiderRolePurchasesSalesBoughtFirst purchaseShare price since
Jung Jong SunCEO / chair8—450.6M KRW2026-05-11−60.5%
Hong Jong HuiBoard member1—70.3M KRW2026-06-26−30.2%
Jung Jong ChulBoard member2—65.9M KRW2026-07-24−40.6%

Insiders' buying price vs the latest close

Insiders paid 2,131.17 KRW a share on average (14 purchase lines, 3 buyers, 2026-01-19 – 2026-07-27). The close on 2026-10-16 was 48.9% below that price.

The latest purchase (2026-07-27) was at 1,787.00 KRW; the close was 39.0% 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
2026-07-27Jung Jong ChulDirectorBought on the exchange30,583₩1,787₩54.7MDART ↗
2026-07-24Jung Jong ChulDirectorBought on the exchange7,200₩1,568₩11.3MDART ↗
2026-07-20Jung Jong SunCEOBought on the exchange15,139₩1,411₩21.4MDART ↗
2026-06-26Jung Jong SunCEOBought on the exchange30,000₩1,561₩46.8MDART ↗
2026-06-26Hong Jong HuiDirectorBought on the exchange44,693₩1,574₩70.3MDART ↗
2026-06-25Jung Jong SunCEOBought on the exchange30,000₩1,563₩46.9MDART ↗
2026-06-24Jung Jong SunCEOBought on the exchange30,000₩1,561₩46.8MDART ↗
2026-06-23Jung Jong SunCEOBought on the exchange30,000₩1,563₩46.9MDART ↗
2026-05-15Jung Jong SunCEOBought on the exchange10,000₩2,515₩25.1MDART ↗
2026-05-14Jung Jong SunCEOBought on the exchange42,000₩2,627₩110.3MDART ↗
2026-05-11Jung Jong SunCEOBought on the exchange38,000₩2,799₩106.4MDART ↗
2026-01-22Jung Jong SunCEOBought on the exchange10,000₩3,358₩33.6MDART ↗
2026-01-21Jung Jong SunCEOBought on the exchange15,000₩3,412₩51.2MDART ↗
2026-01-19Jung Jong SunCEOBought on the exchange30,000₩3,370₩101.1MDART ↗
Other changes in holdings · 15

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

DateInsiderRoleReasonSharesFiling
2026-04-01Cho YongGukPresidentNew appointment(+)30,678DART ↗
2025-12-22Hong Jong HuiDirectorOthers(-)5,211DART ↗
2025-12-22Hong Jong HuiDirectorAcquisition of paid-in new shares(+)6,253DART ↗
2025-12-22Jung Jong SunCEOOthers(-)829,280DART ↗
2025-12-22Jung Jong SunCEOAcquisition of paid-in new shares(+)995,136DART ↗
2025-12-22Jung Jong SunCEOAcquisition of paid-in new shares(+)74DART ↗
2025-12-02Hong Jong HuiDirectorDisposal in exchange(-)10,000DART ↗
2025-12-02Jung Jong ChulDirectorDisposal in exchange(-)39,283DART ↗
2025-12-01Hong Jong HuiDirectorDisposal in exchange(-)20,000DART ↗
2025-11-28Hong Jong HuiDirectorDisposal in exchange(-)11,651DART ↗
2025-11-25Jung Jong SunCEODisposal in OTC(-)553,000DART ↗
2025-11-19Hong Jong HuiDirectorOthers(+)46,862DART ↗
2025-11-19Jung Jong ChulDirectorOthers(+)39,283DART ↗
2025-11-19Jung Jong SunCEOOthers(+)1,382,280DART ↗
2024-10-17Cho Hea KyoungPresident임원퇴임(-)5,580DART ↗