 The company, later renamed Lantheus, went public in 2015.In 2008, Avista, together with Nordic Capital Fund VII, bought ConvaTec, a wound and ostomy care business, from Bristol-Myers Squibb for $4.1 billion.ConvaTec went public on the London Stock Exchange in 2016 and, in 2017, both funds sold approximately 20% of the company to Danish fund Novo.