On February 24th Chairman of the Board of Latvian Institute of Organic Synthesis Ivars Kalviņš bought Rigvir holding shares and became one of the few shareholders. Dr.habil.chem, Professor Ivars Kalviņš has gained international recognition as the author of several hundred publications, more than 550 patents, author of medicine Mildronate, Leokadins and one of the inventors of medicine Belinostat (Beleodaq) registered in 2014 according to the USA FDA standards.