Sprint acquires controlling stake in Clearwire

Sprint Nextel has secured control of Clearwire, the wireless network operator that holds valuable spectrum, according to a regulatory filing on Thursday.

The filing shows that Sprint agreed on Wednesday to acquire the interests in Clearwire held by Craig O. McCaw’s Eagle River Holdings. The transfer of Class A shares and Class B interests gives Sprint a majority stake of 50.8 percent of Clearwire.