Liberty Global Inc. said Thursday it has made a $2.5 billion voluntary cash offer to take over the rest of Telenet Group Holding NV shares and voting rights that it doesn’t already own.

Liberty—an international cable company and provider of television, broadband Internet, and telephone services U.S. headquarters in Englewood, Colorado—bought a controlling stake in the Belgian cable company in February 2007, including 50.4 percent of Telenet’s share capital and the entirety of its Binan Investments BV subsidiary. The latest offer prices Telenet shares at 35 euros apiece ($45.38), a 14 percent premium over the stock’s closing price adjusted for average volume in the month prior to the bid being made.