오성첨단소재

Filings by 오성첨단소재 span 5 companies, the busiest being 알에프텍, 화일약품 and 에코볼트. In total, 13 filings cover trades dated from 4 March 2026 to 4 June 2026.

On the open market, the record shows 5 purchases worth €58.6M and 7 sales worth €1.9M. The totals exclude 6 filings filed without an amount. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket.

A typical purchase (the median) is worth €16.1M. Measured against the company's value, the median purchase equals 47.9% of market capitalisation, across 4 purchases where it is known. The 5 purchases reviewed show no overlap with other insiders buying the same stock within a month. For 4 purchases whose 90-day window has closed, the share price was higher on day 90 than the day after publication in 50% of cases, with a median move of -1.7%. This is a record of the past, not a forecast.

On 4 June 2026 came the latest disclosure, an open-market sale in 알에프텍. The last insider purchase was made public on 27 April 2026, 174 days ago. Most trades are made public on the day they happen. Until a filing is published, the market cannot know about the trade. Selling is not necessarily a view on the stock: liquidity needs and diversification are common motives. Source: insider filings from DART (FSS). Past trades are no guide to future returns.