T-Mobile USA CEO transition: Robert Dotson to retire in...
T-Mobile USA CEO transition: Robert Dotson to retire in May 2011; Philipp Humm to be promoted to replace him … Millicom International Cellular board changes: Allen Sangines-Krause, chairman; Daniel Johannesson, vice chair; Michael Massart, audit committee chair … Brian Wallach, ex-ABC Family, becomes vice president, sales integration, Discovery-Hasbro joint venture The Hub … Eric Shanks leaves DirecTV in June to become president, Fox Sports … NBC News promotes Ryan Osborn to new position of director, social media … Rob Glaser, ex-RealNetworks, joins Accel Partners board.