Stock Trading Canary

Built: 2026-10-19T16:02:49+00:00 · 中文

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SOUTH KOREA · OPENDART

Coreline Soft Co., Ltd

코어라인소프트 · 384470 · KOSDAQ · Healthcare · Diagnostics & Research

Score

44.5

Rank 531 of 745 · KR-v1 · as of 2026-10-18

Buyers 35%20
Size 25%31
Role 20%75
Recency 10%47
Conviction 10%100

Insider timeline

One insider bought, 46 times, the latest (3 Sep). The share closed at 2,495.00 that day and at 2,355.00 most recently (−5.6%).

Wooseok JongWooseok JongChief Financial OfficerCFO2026-04-21 · Wooseok Jong · purchase · 2,677,752 KRW2026-04-22 · Wooseok Jong · purchase · 1,646,960 KRW2026-04-23 · Wooseok Jong · purchase · 1,332,870 KRW2026-04-24 · Wooseok Jong · purchase · 2,315,503 KRW2026-04-27 · Wooseok Jong · purchase · 4,494,644 KRW2026-04-28 · Wooseok Jong · purchase · 2,810,236 KRW2026-04-29 · Wooseok Jong · purchase · 5,795,168 KRW2026-04-30 · Wooseok Jong · purchase · 1,087,500 KRW2026-05-04 · Wooseok Jong · purchase · 540,600 KRW2026-05-06 · Wooseok Jong · purchase · 4,933,228 KRW2026-05-07 · Wooseok Jong · purchase · 2,057,504 KRW2026-05-08 · Wooseok Jong · purchase · 3,731,375 KRW2026-05-14 · Wooseok Jong · purchase · 1,587,560 KRW2026-05-15 · Wooseok Jong · purchase · 361,000 KRW2026-05-18 · Wooseok Jong · purchase · 837,360 KRW2026-05-19 · Wooseok Jong · purchase · 17,175 KRW2026-05-20 · Wooseok Jong · purchase · 527,200 KRW2026-05-22 · Wooseok Jong · purchase · 154,575 KRW2026-05-27 · Wooseok Jong · purchase · 1,465,200 KRW2026-05-28 · Wooseok Jong · purchase · 616,200 KRW2026-05-29 · Wooseok Jong · purchase · 1,496,850 KRW2026-06-01 · Wooseok Jong · purchase · 1,580,320 KRW2026-06-02 · Wooseok Jong · purchase · 658,800 KRW2026-06-05 · Wooseok Jong · purchase · 486,852 KRW2026-06-08 · Wooseok Jong · purchase · 934,096 KRW2026-06-09 · Wooseok Jong · purchase · 443,424 KRW2026-06-11 · Wooseok Jong · purchase · 6,360 KRW2026-06-15 · Wooseok Jong · purchase · 493,185 KRW2026-06-18 · Wooseok Jong · purchase · 505,206 KRW2026-06-19 · Wooseok Jong · purchase · 63,200 KRW2026-06-22 · Wooseok Jong · purchase · 297,135 KRW2026-06-23 · Wooseok Jong · purchase · 1,394,525 KRW2026-06-24 · Wooseok Jong · purchase · 137,000 KRW2026-07-01 · Wooseok Jong · purchase · 291,500 KRW2026-07-09 · Wooseok Jong · purchase · 322,485 KRW2026-07-24 · Wooseok Jong · purchase · 252,070 KRW2026-07-27 · Wooseok Jong · purchase · 2,987,330 KRW2026-07-28 · Wooseok Jong · purchase · 135,140 KRW2026-08-13 · Wooseok Jong · purchase · 282,150 KRW2026-08-14 · Wooseok Jong · purchase · 176,145 KRW2026-08-18 · Wooseok Jong · purchase · 132,500 KRW2026-08-21 · Wooseok Jong · purchase · 134,460 KRW2026-08-27 · Wooseok Jong · purchase · 12,700 KRW2026-08-31 · Wooseok Jong · purchase · 253,500 KRW2026-09-01 · Wooseok Jong · purchase · 642,395 KRW2026-09-03 · Wooseok Jong · purchase · 500,200 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.

Blue line: this share's price, −32.8% over these six months

The closing price of each day, from 3,505.00 on 2026-04-21 to 2,355.00 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 −32.8%, the typical one −31.9%, 0.9 points behind. It is not an index and not a comparison within one industry.

This company: insiders buying per month, last 12 months

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

Darker bars are inside the 180-day window above.

Who traded

InsiderRolePurchasesSalesBoughtFirst purchaseShare price since
Wooseok JongCFO46—53.6M KRW2026-04-21−32.8%

Insiders' buying price vs the latest close

Insiders paid 3,335.45 KRW a share on average (106 purchase lines, 1 buyer, 2025-10-23 – 2026-09-03). The close on 2026-10-16 was 29.4% below that price.

The latest purchase (2026-09-03) was at 2,440.00 KRW; the close was 3.5% 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
2026-09-03Wooseok JongSenior managing directorBought on the exchange205₩2,440₩500,200DART ↗
2026-09-01Wooseok JongSenior managing directorBought on the exchange120₩2,495₩299,400DART ↗
2026-09-01Wooseok JongSenior managing directorBought on the exchange50₩2,490₩124,500DART ↗
2026-09-01Wooseok JongSenior managing directorBought on the exchange89₩2,455₩218,495DART ↗
2026-08-31Wooseok JongSenior managing directorBought on the exchange100₩2,535₩253,500DART ↗
2026-08-27Wooseok JongSenior managing directorBought on the exchange5₩2,540₩12,700DART ↗
2026-08-21Wooseok JongSenior managing directorBought on the exchange54₩2,490₩134,460DART ↗
2026-08-18Wooseok JongSenior managing directorBought on the exchange50₩2,650₩132,500DART ↗
2026-08-14Wooseok JongSenior managing directorBought on the exchange17₩2,685₩45,645DART ↗
2026-08-14Wooseok JongSenior managing directorBought on the exchange50₩2,610₩130,500DART ↗
2026-08-13Wooseok JongSenior managing directorBought on the exchange50₩2,695₩134,750DART ↗
2026-08-13Wooseok JongSenior managing directorBought on the exchange55₩2,680₩147,400DART ↗
2026-07-28Wooseok JongSenior managing directorBought on the exchange2₩2,290₩4,580DART ↗
2026-07-28Wooseok JongSenior managing directorBought on the exchange3₩2,350₩7,050DART ↗
2026-07-28Wooseok JongSenior managing directorBought on the exchange24₩2,290₩54,960DART ↗
2026-07-28Wooseok JongSenior managing directorBought on the exchange30₩2,285₩68,550DART ↗
2026-07-27Wooseok JongSenior managing directorBought on the exchange9₩2,425₩21,825DART ↗
2026-07-27Wooseok JongSenior managing directorBought on the exchange44₩2,495₩109,780DART ↗
2026-07-27Wooseok JongSenior managing directorBought on the exchange56₩2,495₩139,720DART ↗
2026-07-27Wooseok JongSenior managing directorBought on the exchange100₩2,440₩244,000DART ↗
2026-07-27Wooseok JongSenior managing directorBought on the exchange100₩2,445₩244,500DART ↗
2026-07-27Wooseok JongSenior managing directorBought on the exchange100₩2,450₩245,000DART ↗
2026-07-27Wooseok JongSenior managing directorBought on the exchange100₩2,455₩245,500DART ↗
2026-07-27Wooseok JongSenior managing directorBought on the exchange100₩2,460₩246,000DART ↗
2026-07-27Wooseok JongSenior managing directorBought on the exchange100₩2,465₩246,500DART ↗
2026-07-27Wooseok JongSenior managing directorBought on the exchange100₩2,490₩249,000DART ↗
2026-07-27Wooseok JongSenior managing directorBought on the exchange399₩2,495₩995,505DART ↗
2026-07-24Wooseok JongSenior managing directorBought on the exchange91₩2,770₩252,070DART ↗
2026-07-09Wooseok JongSenior managing directorBought on the exchange13₩2,845₩36,985DART ↗
2026-07-09Wooseok JongSenior managing directorBought on the exchange100₩2,855₩285,500DART ↗
2026-07-01Wooseok JongSenior managing directorBought on the exchange6₩2,920₩17,520DART ↗
2026-07-01Wooseok JongSenior managing directorBought on the exchange10₩2,910₩29,100DART ↗
2026-07-01Wooseok JongSenior managing directorBought on the exchange40₩2,910₩116,400DART ↗
2026-07-01Wooseok JongSenior managing directorBought on the exchange44₩2,920₩128,480DART ↗
2026-06-24Wooseok JongSenior managing directorBought on the exchange50₩2,740₩137,000DART ↗
2026-06-23Wooseok JongSenior managing directorBought on the exchange461₩3,025₩1.4MDART ↗
2026-06-22Wooseok JongSenior managing directorBought on the exchange93₩3,195₩297,135DART ↗
2026-06-19Wooseok JongSenior managing directorBought on the exchange20₩3,160₩63,200DART ↗
2026-06-18Wooseok JongSenior managing directorBought on the exchange153₩3,302₩505,206DART ↗
2026-06-15Wooseok JongSenior managing directorBought on the exchange147₩3,355₩493,185DART ↗
2026-06-11Wooseok JongSenior managing directorBought on the exchange2₩3,180₩6,360DART ↗
2026-06-09Wooseok JongSenior managing directorBought on the exchange149₩2,976₩443,424DART ↗
2026-06-08Wooseok JongSenior managing directorBought on the exchange316₩2,956₩934,096DART ↗
2026-06-05Wooseok JongSenior managing directorBought on the exchange174₩2,798₩486,852DART ↗
2026-06-02Wooseok JongSenior managing directorBought on the exchange240₩2,745₩658,800DART ↗
2026-06-01Wooseok JongSenior managing directorBought on the exchange560₩2,822₩1.6MDART ↗
2026-05-29Wooseok JongSenior managing directorBought on the exchange510₩2,935₩1.5MDART ↗
2026-05-28Wooseok JongSenior managing directorBought on the exchange200₩3,081₩616,200DART ↗
2026-05-27Wooseok JongSenior managing directorBought on the exchange450₩3,256₩1.5MDART ↗
2026-05-22Wooseok JongSenior managing directorBought on the exchange45₩3,435₩154,575DART ↗
2026-05-20Wooseok JongSenior managing directorBought on the exchange160₩3,295₩527,200DART ↗
2026-05-19Wooseok JongSenior managing directorBought on the exchange5₩3,435₩17,175DART ↗
2026-05-18Wooseok JongSenior managing directorBought on the exchange240₩3,489₩837,360DART ↗
2026-05-15Wooseok JongSenior managing directorBought on the exchange100₩3,610₩361,000DART ↗
2026-05-14Wooseok JongSenior managing directorBought on the exchange430₩3,692₩1.6MDART ↗
2026-05-08Wooseok JongSenior managing directorBought on the exchange1,060₩3,470₩3.7MDART ↗
2026-05-08Wooseok JongSenior managing directorBought on the exchange15₩3,545₩53,175DART ↗
2026-05-07Wooseok JongSenior managing directorBought on the exchange569₩3,616₩2.1MDART ↗
2026-05-06Wooseok JongSenior managing directorBought on the exchange1,294₩3,722₩4.8MDART ↗
2026-05-06Wooseok JongSenior managing directorBought on the exchange32₩3,655₩116,960DART ↗
2026-05-04Wooseok JongSenior managing directorBought on the exchange136₩3,975₩540,600DART ↗
2026-04-30Wooseok JongSenior managing directorBought on the exchange290₩3,750₩1.1MDART ↗
2026-04-29Wooseok JongSenior managing directorBought on the exchange1,552₩3,734₩5.8MDART ↗
2026-04-28Wooseok JongSenior managing directorBought on the exchange748₩3,757₩2.8MDART ↗
2026-04-27Wooseok JongSenior managing directorBought on the exchange1,056₩3,739₩3.9MDART ↗
2026-04-27Wooseok JongSenior managing directorBought on the exchange143₩3,820₩546,260DART ↗
2026-04-24Wooseok JongSenior managing directorBought on the exchange467₩3,509₩1.6MDART ↗
2026-04-24Wooseok JongSenior managing directorBought on the exchange188₩3,600₩676,800DART ↗
2026-04-23Wooseok JongSenior managing directorBought on the exchange385₩3,462₩1.3MDART ↗
2026-04-22Wooseok JongSenior managing directorBought on the exchange476₩3,460₩1.6MDART ↗
2026-04-21Wooseok JongSenior managing directorBought on the exchange759₩3,528₩2.7MDART ↗
2026-04-20Wooseok JongSenior managing directorBought on the exchange250₩3,569₩892,250DART ↗
2026-04-17Wooseok JongSenior managing directorBought on the exchange50₩3,661₩183,050DART ↗
2026-04-16Wooseok JongSenior managing directorBought on the exchange450₩3,640₩1.6MDART ↗
2026-04-13Wooseok JongSenior managing directorBought on the exchange50₩3,035₩151,750DART ↗
2026-04-07Wooseok JongSenior managing directorBought on the exchange350₩3,000₩1.1MDART ↗
2026-04-06Wooseok JongSenior managing directorBought on the exchange250₩3,017₩754,250DART ↗
2026-04-03Wooseok JongSenior managing directorBought on the exchange109₩3,121₩340,189DART ↗
2026-04-02Wooseok JongSenior managing directorBought on the exchange507₩3,165₩1.6MDART ↗
2026-04-01Wooseok JongSenior managing directorBought on the exchange150₩3,293₩493,950DART ↗
2026-03-31Wooseok JongSenior managing directorBought on the exchange282₩3,168₩893,376DART ↗
2026-03-30Wooseok JongSenior managing directorBought on the exchange159₩3,197₩508,323DART ↗
2026-03-27Wooseok JongSenior managing directorBought on the exchange33₩3,355₩110,715DART ↗
2026-03-26Wooseok JongSenior managing directorBought on the exchange150₩3,402₩510,300DART ↗
2026-03-23Wooseok JongSenior managing directorBought on the exchange250₩3,371₩842,750DART ↗
2026-03-20Wooseok JongSenior managing directorBought on the exchange50₩3,405₩170,250DART ↗
2026-03-13Wooseok JongSenior managing directorBought on the exchange32₩3,205₩102,560DART ↗
2026-03-09Wooseok JongSenior managing directorBought on the exchange200₩3,038₩607,600DART ↗
2026-03-04Wooseok JongSenior managing directorBought on the exchange484₩2,969₩1.4MDART ↗
2026-03-03Wooseok JongSenior managing directorBought on the exchange250₩3,387₩846,750DART ↗
2026-02-27Wooseok JongSenior managing directorBought on the exchange200₩3,438₩687,600DART ↗
2026-02-26Wooseok JongSenior managing directorBought on the exchange300₩3,558₩1.1MDART ↗
2026-02-13Wooseok JongSenior managing directorBought on the exchange137₩3,671₩502,927DART ↗
2026-02-12Wooseok JongSenior managing directorBought on the exchange202₩3,789₩765,378DART ↗
2026-02-11Wooseok JongSenior managing directorBought on the exchange51₩3,995₩203,745DART ↗
2026-02-06Wooseok JongSenior managing directorBought on the exchange56₩3,950₩221,200DART ↗
2026-01-30Wooseok JongSenior managing directorBought on the exchange55₩4,335₩238,425DART ↗
2025-11-21Wooseok JongSenior managing directorBought on the exchange125₩3,308₩413,500DART ↗
2025-11-19Wooseok JongSenior managing directorBought on the exchange100₩3,348₩334,800DART ↗
2025-11-18Wooseok JongSenior managing directorBought on the exchange297₩3,388₩1.0MDART ↗
2025-11-17Wooseok JongSenior managing directorBought on the exchange50₩3,540₩177,000DART ↗
2025-11-11Wooseok JongSenior managing directorBought on the exchange50₩3,745₩187,250DART ↗
2025-11-10Wooseok JongSenior managing directorBought on the exchange50₩3,730₩186,500DART ↗
2025-11-05Wooseok JongSenior managing directorBought on the exchange35₩3,665₩128,275DART ↗
2025-11-04Wooseok JongSenior managing directorBought on the exchange50₩3,900₩195,000DART ↗
2025-10-23Wooseok JongSenior managing directorBought on the exchange1₩4,305₩4,305DART ↗
Other changes in holdings · 25

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

DateInsiderRoleReasonSharesFiling
2025-06-14Joonmin ParkManaging directorAcquisition of paid-in new shares(+)13,326DART ↗
2025-06-14Sanghyun PaikSenior managing directorAcquisition of paid-in new shares(+)4,464DART ↗
2025-06-14Jaeyoun YiInside directorAcquisition of paid-in new shares(+)60,947DART ↗
2025-06-14Kim Jin KookCEOAcquisition of paid-in new shares(+)145,000DART ↗
2025-06-05Joonmin ParkManaging directorOthers(-)11,136DART ↗
2025-06-05Sanghyun PaikSenior managing directorOthers(-)3,731DART ↗
2025-06-05Seung Chul ParkOutside directorOthers(-)946DART ↗
2025-06-05Wooseok JongSenior managing directorOthers(-)5,484DART ↗
2025-06-05Jaeyoun YiInside directorOthers(-)55,347DART ↗
2025-06-05Kim Jin KookCEOOthers(-)166,217DART ↗
2025-05-27Seung Chul ParkOutside directorAcquisition of paid-in new shares(+)1,132DART ↗
2025-05-27Wooseok JongSenior managing directorAcquisition of paid-in new shares(+)6,562DART ↗
2025-05-27Wooseok JongSenior managing directorDisposal in exchange(-)4,250DART ↗
2025-05-26Wooseok JongSenior managing directorDisposal in exchange(-)850DART ↗
2025-05-22Joonmin ParkManaging directorAcquisition in exchange(+)1,440DART ↗
2025-05-19Jaeyoun YiInside directorOthers(-)370,394DART ↗
2025-05-19Kim Jin KookCEOOthers(-)387,839DART ↗
2025-05-12Seung Chul ParkOutside directorOthers(+)946DART ↗
2025-05-12Wooseok JongSenior managing directorOthers(+)10,584DART ↗
2025-05-12Sanghyun PaikSenior managing directorOthers(+)3,731DART ↗
2025-05-12Joonmin ParkManaging directorOthers(+)9,696DART ↗
2025-05-12Jaeyoun YiInside directorOthers(+)425,741DART ↗
2025-05-12Kim Jin KookCEOOthers(+)554,056DART ↗
2023-10-04Jaeyoun YiInside directorReceipt of donation(+)10DART ↗
2023-10-04Kim Jin KookCEOReceipt of donation(+)10DART ↗