 CHICAGO--BUSINESS WIRE--R.R. Donnelley Sons Company NYSE: RRD RRD or the Company today reported financial results for the third quarter of 2020. Key messages GAAP net sales decreased 15.9; non-GAAP organic net sales decreased 12.1 GAAP income from operations was down 55.1 million versus the prior year primarily due to a 56.5 million increase in restructuring and other charges; current quarter included a charge for MEPP withdrawal obligations related to the LSC Communications 