Mersen Stock: price and insider trades · France

Every trade that managers of Mersen disclose to AMF is tracked on this page. The company sits in the Chemicals & Materials sector and is based in La Défense, France. It was founded in 1891. From 18 October 2025 to 18 October 2026, the disclosure feed for Mersen logged 16 filings by 12 insiders.

Open-market activity splits into 1 purchase and 5 sales totalling €1.1M; 1 insider sit on the buying side and 5 insiders on the selling side. The totals exclude 1 filing filed without an amount. Unlike grants, an open-market purchase is paid for by the insider, at the market price. Luc THEMELIN filed the largest sale, €488k, on 24 September 2026, which represents 0.048% of the company's market value. Those buying include 1 senior executive.

Compared with its exchange (316 companies, median 6 filings), a count of 16 filings is above the norm. Our records for Mersen go back to 2021, with 18 purchases and 31 sales on the open market in total.

The latest purchase dates back some time: it was published 145 days ago, on 25 May 2026. Between a trade and the moment it shows up on AMF, the median delay is 3 days. The regulation allows three business days to notify a trade (MAR article 19). Sales are harder to read than purchases, since they often meet personal needs such as tax or diversification.

For comparison within the same sector, see the insider buying recorded at Culp Inc. This summary is built from AMF disclosures alone and does not predict where the share price will go.