RR Donnelley & Sons (RRD) 10-K/A 2021 FY Annual report (amended)

EXHIBIT 31.4

Certification Pursuant to Rule 13a-14(a) and Rule 15d-14(a)

of the Securities Exchange Act of 1934

I, Terry D. Peterson, certify that:

1. I have reviewed this Amendment No. 1 to the Annual Report on Form 10-K/A of R.R. Donnelley & Sons Company;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

Date: February 24, 2022

/s/    TERRY D. PETERSON

Terry D. Peterson

Executive Vice President and Chief Financial Officer