Omnicom elevates andrea lennon to chief client officer

Lennon previously served as president of critical mass new york , oct. 17, 2022 /prnewswire/ -- omnicom group inc. (nyse: omc) today announced the appointment of andrea lennon to the new role of chief client officer, effective immediately. lennon will be responsible for leading omnicom's multi-disciplinary solutions for enterprise clients, including the company's global client leaders (gcl) group that manages and orchestrates client solutions across omnicom's leading agencies and practice areas.
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