MullenLowe executive partner (and MAA columnist) Laurence Green is exiting the agency four years after 101, the agency he founded with Phil Rumbol and Mark Ellwood, was bought by Interpublic and incorporated into MullenLowe. Rumbol left to become CEO of Bahlsen Biscuits (which remains a MullenLowe client) while Ellwood joined Leo Burnett last year. Green …

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