박성식

박성식 (chief executive) discloses dealings in 제주반도체 to DART (FSS). Between 11 April 2022 and 22 May 2026, the trades on record add up to 13 filings.

Both buying and selling appear: 5 purchases worth €25.1M, against 5 sales. The totals exclude 7 filings filed without an amount. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay. In 2026 alone, the filings show 5 purchases and no sales.

The median purchase comes to €9.3M. As a share of market capitalisation, the median purchase stands at 0.60%, based on 3 purchases. Of 4 purchases, 3 formed part of a group of insiders buying within 30 days of each other. A cluster is several different insiders buying the same stock within a short window, a pattern studied more closely than a single purchase. For 3 purchases whose 90-day window has closed, the share price was higher on day 90 than the day after publication in 100% of cases, with a median move of +11.3%. This is a record of the past, not a forecast.

The latest filing, published on 22 May 2026, reports an open-market purchase in 제주반도체. Filings reach the DART (FSS) feed a median of 5 days after the trade. Until a filing is published, the market cannot know about the trade. Source: insider filings from DART (FSS). Past trades are no guide to future returns.