Stanley T. Sigman was president and chief executive officer of wireless at AT&T—at the time, the United States's largest wireless provider.
A graduate of West Texas State University in Canyon, Texas, Sigman began his career with Southwestern Bell Telephone as a stockman in Hereford, Texas, in 1965.
A long-time wireless industry leader, Sigman has held leadership positions at SBC Communications, where he helped start SBC's wireless business in the mid-1980s, managed its expansion into one of the largest wireless businesses in the nation, and directed its integration into BellSouth's wireless group to form Cingular Wireless in 2001.
Prior to joining Cingular, Sigman served as group president and chief operating officer for SBC Communications, responsible for the company's wireline and wholesale operations. Sigman's career has included leading key business units for SBC, including Long Distance, Messaging, Global Accounts, Sterling Commerce, DataComm, Web Hosting, eCommerce, TRI, Network Planning and Engineering, Network Operations, Business and Consumer Marketing and Operator Services.
Sigman has been long regarded as a wireless industry visionary as well as a champion for wireless safety and technology. He currently serves as chairman emeritus of the board of directors of the Cellular Telecommunications and Internet Association (CTIA). The CTIA is the international organization representing all sectors of wireless communications—cellular, personal communication services, and enhanced specialized mobile radio.