Liz Ross has resigned as Tribal DDB's president of U.S. operations and global chief marketing officer. She's been in her role since last June, but told AdAge that it was "time to move on", though the word on the street is that she was let go, but isn't that always the word on the street? No word on who, when or if her position will be filled.

Tribal DDB has seen a shift in upper level creative management as of late. Changes have been taking place in Chicago, Dallas and London. Can't wait to see what happens next.

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