A block trade is usually a substantial secondary sale of shares, whereby one company is selling already outstanding and publicly traded shares in another company. In the case of a block trade, MeesPierson CFCM underwrites (buys) a fixed number of shares at a fixed price before the deal is announced to the market. In general there are no fees for such transactions, instead, the relevant 'issue price' is usually the prevailing market price less a discount.
You will find more information at the MeesPierson Corporate Finance & Capital Markets website.