OAG aligns BBDO, DDB, TBWA and the Advertising Collective under one leadership Accelerates investments in innovative tools, technologies, and AI platforms TBWA CEO, Troy Ruhanen, is elevated to Global CEO, OAG NEW YORK, Aug. 27, 2024 /PRNewswire/ -- Omnicom (NYSE: OMC) today announced the formation of Omnicom Advertising Group (OAG), a new global organization aligning world-class creative networks BBDO, DDB, TBWA, as well as leading agencies within the Advertising Collective including Goodby Silverstein & P ...