Belgium’s stock market regulator the Financial Services and Markets Authority (FSMA) has filed a complaint over a letter sent by Exmar to its shareholders and apparent approaches to them in Nicolas Saverys’ vehicle Saverex’s second effort to take the company private.

Exmar, which unveiled a more than doubling of its first-half profits last week, said on Friday that it had “been informed that the letter may have created the impression with certain shareholders that they are under an obligation to sell”.