No insider purchase over the last 90 days. The latest, by 김석종, was filed 12 May 2026.
J2KBIO Co., Ltd.: what insiders have been doing
J2KBIO Co., Ltd. belongs to the Chemicals sector. Filings by its managers are published through DART (FSS). Between 22 October 2025 and 22 October 2026, 2 insiders published 2 filings.
Both sides are active: 1 purchase worth €21k and 1 sale, from 1 insider and 1 insider respectively. No amount is published for 1 filing, which the totals therefore leave out. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. At €21k, the purchase published on 12 May 2026 by 김석종 is the largest of the period (0.080% of market cap). Those buying include 1 board member.
The clock since the last published purchase (12 May 2026) now reads 182 days.
With 2 filings in twelve months, the company is quieter than the median of 7 filings across the 2,650 companies we follow on the same exchange. Looking back to 2024, when coverage begins, insiders filed 1 purchase and 2 sales.
Source: insider filings from DART (FSS). Past trades are no guide to future returns.
Who traded when
BuySaleSince the insiders bought
- -4.9%Entry ₩7,860 · Close at T+90 ₩7,472
Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.
This score ranks the purchase within its own market. A position size is suggested only on the venues of the backtested strategy universe; elsewhere, signals stay on watch. Not investment advice.
Transparent value + quality ranking, distinct from the insider signal.
Financial data
as of FY 2025FY ended December 2025 · cache
About J2KBIO Co., Ltd.
J2K Bio is a company operating in the chemical and materials sector, listed on the XKRX. It specializes in the development of biotechnology solutions.
