Catherine is the CEO of media-buying agency PHD US, a position to which Omnicom promoted her after she served as chief investment officer (North America) for Omnicom Media group, the umbrella group housing Omnicom’s media agencies: PHD, Hearts & Science, and OMD. Prior to OMG, she spent 15 years at ABC Television, where she rose to become SVP of ABC News Sales. She is a well-regarded thought leader within the field of advertising