Bellevue-based T-Mobile USA says Chief Executive Phillipp Humm is leaving to join his family back in Europe. An analyst says Humm was probably tired of the parent company not investing enough in its U.S. subsidiary.
Humm was appointed CEO of T-Mobile USA less than two years ago by its parent, Deutsche Telekom. Then, a few months later, AT&T announced that it was buying T-Mobile. That deal ultimately unraveled after the federal government challenged it.