X0508 4 2025-05-21 0001481792 Quad/Graphics, Inc. QUAD 0001595041 Flores Kathryn Quadracci C/O QUAD/GRAPHICS, INC. N61 W23044 HARRY'S WAY SUSSEX WI 53089-3995 1 0 Class A Common Stock 2025-05-21 4 A 0 22004 0 A 143629 D Class A Common Stock 4067 I As Trustee - DQ 2008 Trust Class A Common Stock 4067 I As Trustee - HVQ 2003 Trust Class A Common Stock 4067 I As Trustee - MAQ 2001 Trust Class B Common Stock Class A Common Stock 2870 2870 I As Trustee - DQ 2008 Trust Class B Common Stock Class A Common Stock 14915 14915 I As Trustee - HRQ 2014 Trust Class B Common Stock Class A Common Stock 2870 2870 I As Trustee - HVQ 2003 Trust Class B Common Stock Class A Common Stock 2868 2868 I As Trustee - MAQ 2001 Trust Includes 22,004 shares attributable to deferred stock units granted under the Quad/Graphics, Inc. 2020 Omnibus Incentive Plan that will be delivered to the reporting person on May 21, 2027 unless deferred by the reporting person or on separation from service. Any dividend or other distribution paid with respect to class A common stock underlying the deferred stock units shall accrue and be converted into additional deferred stock units based on the closing price of class A common stock on any such dividend payable date. As Trustee for the Danica Quadracci 2008 Trust. The reporting person is a trustee of the trust and/or is a current or future beneficiary thereof. The reporting person disclaims beneficial ownership of the reported securities except to the extent of her pecuniary interest therein. As Trustee for the Halle Victoria Quadracci 2003 Trust. The reporting person is a trustee of the trust and/or is a current or future beneficiary thereof. The reporting person disclaims beneficial ownership of the reported securities except to the extent of her pecuniary interest therein. As Trustee for the Meghan Angela Quadracci 2001 Trust. The reporting person is a trustee of the trust and/or is a current or future beneficiary thereof. The reporting person disclaims beneficial ownership of the reported securities except to the extent of her pecuniary interest therein. Class B Common Stock is convertible into Class A Common Stock on a 1-for-1 basis at no cost and has no expiration date. As Trustee for the H. Richard Quadracci 2014 Trust. The reporting person is a trustee of the trust and/or is a current or future beneficiary thereof. The reporting person disclaims beneficial ownership of the reported securities except to the extent of her pecuniary interest therein. /s/ Alexander N. Pyke, as attorney-in-fact for Kathryn Quadracci Flores 2025-05-23