Omnicom reported fourth quarter 2012 PR revenue jumped 10.5% to $347.9M. For the year, OMC's PR units, which include Ketchum, Porter Novelli and Fleishman-Hillard, among others, rose 4.9% to nearly $1.3B.

Organic PR growth was 8.4% for Q4 and 3.3% for the year.