Leo Regulus Investment Joint Stock Company acquired a 11.64% stake in KOSY Joint Stock Company (HOSE:KOS) on November 30, 2021. As a part of the transaction, Leo Regulus Investment Joint Stock Company acquired 25.2 million shares in KOSY Joint Stock Company. Leo Regulus Investment Joint Stock Company completed the acquisition of a 11.64% stake in KOSY Joint Stock Company (HOSE:KOS) on November 30, 2021.