Frank Mastiaux

Frank Mastiaux appears in our data through filings on Centrica plc shares, published by RNS (LSE). Over a trading history stretching from 25 February 2026 to 25 September 2026, the count stands at 11 filings.

Every open-market trade on record is a purchase: 11 purchases worth €44k, and no sale. Unlike grants, an open-market purchase is paid for by the insider, at the market price.

A typical purchase (the median) is worth €2,633. Measured against the company's value, the median purchase equals 0.0000% of market capitalisation, across 10 purchases where it is known. On 11 out of 11 purchases, another insider of the same company was buying within the same 30 days. Purchases made close together by different insiders form what is called a cluster. For 7 purchases whose 90-day window has closed, the share price was higher on day 90 than the day after publication in 0% of cases, with a median move of -15.0%. They describe history only and say nothing certain about the share price ahead.

On 25 September 2026 came the latest disclosure, an open-market purchase for €2,609 in Centrica plc. The median gap between trade and publication is zero days: most filings appear on the same day. For comparison, UK MAR gives managers three business days to notify a trade. These figures are compiled from regulatory filings published by RNS (LSE). They describe what insiders did and are not a recommendation.