X0306 4 2021-03-02 0 0001669811 Donnelley Financial Solutions, Inc. DFIN 0001464929 Leib Daniel C/O DONNELLEY FINANCIAL SOLUTIONS 35 WEST WACKER DRIVE CHICAGO IL 60601 1 1 0 0 Chief Executive Officer Common Stock 2021-03-02 4 F 0 24706 28.23 D 416321 D Common Stock 2021-03-03 4 A 0 85690 28.61 A 502011 D Common Stock 2021-03-03 4 F 0 37961 28.61 D 464050 D Common Stock 2021-03-03 4 A 0 57100 A 521150 D Shares were withheld as payment of a tax liability incident to vesting of restricted stock units issued in accordance with Rule 16b-3. Common stock issued in payout of performance stock units awarded on March 2, 2018. Shares were withheld as payment of a tax liability incident to vesting of performance stock units issued in accordance with Rule 16b-3. Company granted restricted stock units ("RSUs") issued pursuant to a Rule 16b-3 plan. The RSUs vest three equal annual installments beginning on March 3, 2022. Includes 326,983 shares held directly and 194,167 restricted stock units. Jennifer Reiners, pursuant to power of attorney 2021-03-04