Results of Operations and Financial Condition . On July 28, 2026, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its second quarter ended June 30, 2026. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Results of Operations and Financial Condition . On April 28, 2026, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its first quarter ended March 31, 2026. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

President — Dave Honan: Dave Honan was promoted to President while retaining his role as Chief Operating Officer.

Results of Operations and Financial Condition . On February 17, 2026, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its fourth quarter and year ended December 31, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Results of Operations and Financial Condition . On October 28, 2025, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its third quarter ended September 30, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Results of Operations and Financial Condition . On July 29, 2025, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its second quarter ended June 30, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Results of Operations and Financial Condition . On April 29, 2025, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its first quarter ended March 31, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Executive Vice President of Product and Market Strategy and President of Quad Agency Solutions — Eric N. Ashworth: Eric N. Ashworth intends to leave the Company as of May 1, 2025.

Results of Operations and Financial Condition . On February 18, 2025, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its fourth quarter and year ended December 31, 2024. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Results of Operations and Financial Condition . On October 28, 2024, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its third quarter ended September 30, 2024. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Entry into a Material Definitive Agreement. Quad/Graphics, Inc. (the “Company”) completed the ninth amendment (the “Amendment”) to the Company’s April 28, 2014 Senior Secured Credit Facility on October 18, 2024. The Senior Secured Credit Facility was amended to (a) reduce the aggregate amount of the existing revolving credit facility from $342.5 million to $324.6 million, and extend the maturity of a portion of the revolving credit facility such that $17.7 million under the revolving credit f…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information provided in

Results of Operations and Financial Condition . On July 30, 2024, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its second quarter ended June 30, 2024. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Results of Operations and Financial Condition . On April 30, 2024, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its first quarter ended March 31, 2024. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Results of Operations and Financial Condition . On February 20, 2024, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its fourth quarter and year ended December 31, 2023. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Results of Operations and Financial Condition . On October 31, 2023, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its third quarter ended September 30, 2023. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Director — Melanie Huet: Melanie Huet was elected to the Board of Directors.

Results of Operations and Financial Condition . On August 1, 2023, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its second quarter ended June 30, 2023. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Results of Operations and Financial Condition . On May 2, 2023, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its first quarter ended March 31, 2023. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Results of Operations and Financial Condition . On February 21, 2023, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its fourth quarter and year ended December 31, 2022. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Director — Beth-Ann Eason: Beth-Ann Eason was elected to the Board and appointed to the Compensation Committee.

Executive Vice President and Chief People & Legal Officer — Jennifer J. Kent: Jennifer J. Kent is leaving her role to pursue another opportunity.

Results of Operations and Financial Condition . On November 1, 2022, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its third quarter ended September 30, 2022. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Results of Operations and Financial Condition . On August 2, 2022, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its second quarter ended June 30, 2022. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.

Results of Operations and Financial Condition . On May 3, 2022, Quad/Graphics, Inc. (the “Company”) issued a press release announcing financial results for its first quarter ended March 31, 2022. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.