Moves at AT&T: John Stankey to group president and...

Moves at AT&T: John Stankey to group president and chief strategy officer; Ralph de la Vega to president-CEO, AT&T Mobility; Andy Geisse to senior executive vice president-AT&T Business & Home Solutions; John Donovan to senior executive vice president-AT&T Technology & Network Operations; Marissa Shorenstein promoted to president, AT&T New York … Discovery promotes Gabe Vehovsky to executive vice president-digital strategy and emerging businesses, heading new unit … Wiltshire & Grannis promotes Madeleine Findley to partner, specializing in privacy law and international regulation … Tony Cecchin, Cambium Networks, joins Wireless Communications Association board.