Things really do come in threes: Days after the exits of Sprint Nextel CEO Gary Forsee and Jamba/Fox Mobile Entertainment head Lucy Hood, AT&T’s president and CEO of wireless Stan Sigman announced his retirement Thursday, effective immediately. AT&T named COO Ralph de la Vega to fill Sigman’s vacancy–de la Vega had been considered a front runner to replace Forsee at the helm of Sprint. A 42-year AT&T veteran, Sigman exits months after negotiating exclusive U.S. rights to Apple’s iPhone–he was named president and CEO of the former Cingular Wireless in 2002 following the merger of SBC Communications and BellSouth.
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