Max Welt Holdings Limited sold 4.7% stake in Boruta-Zachem S.A. (WSE:BRU) on December 21, 2016. Max Welt sold 11.3 million shares. Max Welt Holdings Limited completed the sale of 4.7% stake in Boruta-Zachem S.A. (WSE:BRU) on December 21, 2016.