Stock Trading Canary

Built: 2026-10-19T16:02:49+00:00 · 中文

← South Korea

SOUTH KOREA · OPENDART

Y-Biologics, Inc

와이바이오로직스 · 338840 · KOSDAQ · Healthcare · Biotechnology

Score

72.2

Rank 95 of 745 · KR-v1 · as of 2026-10-18

Buyers 35%60
Size 25%76
Role 20%65
Recency 10%92
Conviction 10%100

Insider timeline

3 insiders bought within 2 days, 12 Oct to 13 Oct: 2 CEO / chair, 1 Executive. The share closed at 7,060.00 on the first of those days and at 7,170.00 most recently (+1.6%).

Several insiders within 15 days: 2026-10-12 – 2026-10-13Park Young wooPark Young wooChief Executive OfficerCEO / chairPark Bum chanPark Bum chanChief Executive OfficerCEO / chairLee Sang heonLee Sang heonMember of the executive committeeExecutive2026-06-01 · Park Young woo · purchase · 20,686,900 KRW2026-06-08 · Park Young woo · purchase · 20,281,500 KRW2026-06-15 · Park Young woo · purchase · 20,443,500 KRW2026-06-19 · Park Young woo · purchase · 26,368,200 KRW2026-06-23 · Park Young woo · purchase · 22,309,200 KRW2026-06-24 · Park Young woo · purchase · 23,678,000 KRW2026-06-26 · Park Young woo · purchase · 83,762,640 KRW2026-06-29 · Park Young woo · purchase · 9,650,270 KRW2026-07-21 · Park Young woo · purchase · 18,326,000 KRW2026-07-29 · Park Young woo · purchase · 14,367,600 KRW2026-07-31 · Park Young woo · purchase · 24,471,400 KRW2026-10-12 · Park Bum chan · purchase · 10,094,700 KRW2026-10-12 · Park Young woo · purchase · 17,542,500 KRW2026-10-13 · Lee Sang heon · purchase · 6,713,000 KRW2026-10-13 · Park Young woo · purchase · 7,050,160 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 12 Oct – 13 Oct, 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, −69.6% over these six months

The closing price of each day, from 23,600.00 on 2026-04-21 to 7,170.00 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 −69.6%, the typical one −31.9%, 37.8 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
Jan
Feb
Mar
Apr
May
1Jun
1Jul
Aug
Sep
3Oct

Darker bars are inside the 180-day window above.

Who traded

InsiderRolePurchasesSalesBoughtFirst purchaseShare price since
Park Young wooCEO / chair13—308.9M KRW2026-06-01−57.4%
Park Bum chanCEO / chair1—10.1M KRW2026-10-12+1.6%
Lee Sang heonExecutive1—6.7M KRW2026-10-13+4.1%

Insiders' buying price vs the latest close

Insiders paid 10,452.29 KRW a share on average (15 purchase lines, 3 buyers, 2026-06-01 – 2026-10-13). The close on 2026-10-16 was 31.4% below that price.

The latest purchase (2026-10-13) was at 6,746.65 KRW; the close was 6.3% 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 dateInsiderRoleTradeSharesPriceValueFiling
2026-10-13Lee Sang heonVice presidentBought on the exchange1,000₩6,713₩6.7MDART ↗
2026-10-13Park Young wooCEOBought on the exchange1,040₩6,779₩7.1MDART ↗
2026-10-12Park Bum chanCEOBought on the exchange1,425₩7,084₩10.1MDART ↗
2026-10-12Park Young wooCEOBought on the exchange2,500₩7,017₩17.5MDART ↗
2026-07-31Park Young wooCEOBought on the exchange3,100₩7,894₩24.5MDART ↗
2026-07-29Park Young wooCEOBought on the exchange1,800₩7,982₩14.4MDART ↗
2026-07-21Park Young wooCEOBought on the exchange2,000₩9,163₩18.3MDART ↗
2026-06-29Park Young wooCEOBought on the exchange890₩10,843₩9.7MDART ↗
2026-06-26Park Young wooCEOBought on the exchange7,410₩11,304₩83.8MDART ↗
2026-06-24Park Young wooCEOBought on the exchange2,000₩11,839₩23.7MDART ↗
2026-06-23Park Young wooCEOBought on the exchange1,800₩12,394₩22.3MDART ↗
2026-06-19Park Young wooCEOBought on the exchange1,900₩13,878₩26.4MDART ↗
2026-06-15Park Young wooCEOBought on the exchange1,500₩13,629₩20.4MDART ↗
2026-06-08Park Young wooCEOBought on the exchange1,500₩13,521₩20.3MDART ↗
2026-06-01Park Young wooCEOBought on the exchange1,300₩15,913₩20.7MDART ↗
Other changes in holdings · 10

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

DateInsiderRoleReasonSharesFiling
2026-04-09Jang Woo IckCEOStock options(+)60,000DART ↗
2026-03-17Park Bum chanVice presidentOff-hour trading(-)20,000DART ↗
2025-12-22Jang Woo IckCEODisposal in OTC(-)20,000DART ↗
2025-12-11Jang Myeong jaDirectorStock options(+)6,000DART ↗
2025-12-11Lee Sang heonSenior managing directorStock options(+)26,000DART ↗
2025-12-11Park Bum chanVice presidentExercise of appraisal rights(+)20,000DART ↗
2025-12-11Jang Woo IckCEOStock options(+)20,000DART ↗
2025-05-27Young Woo PARKCEOConversion, etc.(-)25,000DART ↗
2025-05-27Young Woo PARKCEOExercise price adjustment27,777DART ↗
2024-11-04Jang Myeong jaDirector주식매수선택권(+)10,000DART ↗