 NEW YORK, Feb. 2, 2022 PRNewswire -- Omnicom Group Inc. NYSE: OMC will publish its fourth quarter and full year 2021 results on Tuesday, February 8, 2022 after the New York Stock Exchange closes. The company will also host a conference call to review the financial results on Tuesday, February 8, 2022 starting at 4:30 p.m. 