Kirkland, Wash.-based Clearwire (NSDQ: CLWR) has named David Sach as CFO, replacing John Butler, who stepped down in September after Clearwire completed its merger with Sprint Nextel’s WiMax unit. Most recently, Sach served as CFO at Millicom International Cellular, a wireless company in Latin America, Africa, and Asia. Prior to Millicom, Sach served as SVP, finance and chief accounting officer of Equant, a Dutch telecom company. And before that, Sach’s background included a stint at EMI Group, where he worked to develop reporting and financial systems to support the conversion from records to CDs. Release.

SEE ALSO: Industry Moves: Clearwire Names Likely Executives To Lead Post-Merger; CFO Will Leave