April 7 (SeeNews) - Telemach Croatia, a unit of Dutch-based multi-play and media provider United Group, said on Thursday it holds 95.07% of the capital of Croatian fixed Internet and pay-TV services provider OT-Optima Telekom [ZSE:OPTE] following a buyout bid in which it bought 27,896,678 shares representing a stake of 40.17% of Optima's equity capital.