René Aldach

René Aldach is a declared insider of Heidelberg Materials AG, with filings sourced from BaFin. Between 28 May 2025 and 23 September 2026, the trades on record add up to 9 filings.

On the market, this insider has only ever bought: 9 purchases, €401k in total. Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. 2026 to date brings 6 purchases and no sales.

A typical purchase (the median) is worth €40k. Measured against the company's value, the median purchase equals 0.0001% of market capitalisation, across 4 purchases where it is known. Of 9 purchases, 3 formed part of a group of insiders buying within 30 days of each other. Purchases made close together by different insiders form what is called a cluster.

The record was last updated on 23 September 2026 with an open-market purchase (€36k) in Heidelberg Materials AG. Half of the filings or more reach the BaFin feed on the day of the trade. For comparison, MAR article 19 gives managers three business days to notify a trade. These figures are compiled from regulatory filings published by BaFin. They describe what insiders did and are not a recommendation.