Bloomberg tech company hires top ad executive as campaign continues its digital onslaught

The digital company working for Mike Bloomberg’s presidential campaign has hired another executive from a premier advertising firm, as the billionaire former New York mayor’s organization churns out waves of digital content to support his candidacy. The company, Hawkfish, recently hired Tim Castree, former North America CEO of WPP Group subsidiary GroupM, according to people with direct knowledge of the matter who declined to be named as these decisions have not been made public. GroupM’s website boasts that the firm directs “more than $50 billion in annual advertising.” Castree left in November. Hawkfish was founded by Bloomberg himself and is dedicated to being his campaign’s “primary digital agency.”