 CHICAGO--BUSINESS WIRE--R.R. Donnelley Sons Company NYSE: RRD RRD or the Company today reported financial results for the fourth quarter and full year of 2020. Q4 Key messages GAAP net sales, including the impact of dispositions and FX, decreased 5.6; Non-GAAP organic net sales decreased 4.8; both decline rates improved sequentially from the prior two quarters GAAP earnings per share from continuing operations of 0.46 and Non-GAAP adjusted earnings per share from continuing o 