Exhibit 99.1 FOR IMMEDIATE RELEASE Quad Reports First Quarter 2024 Results Reaffirms full-year 2024 financial guidance, including 1.8x Net Debt Leverage by year end SUSSEX, WI, April 30, 2024 — Quad/Graphics, Inc. (NYSE: QUAD) (“Quad” or the “Company”), a global marketing experience company, today reported results for the first quarter ended March 31, 2024. Recent Highlights • Realized Net Sales of $655 million in the first quarter of 2024 compared to $767 million in 2023, and recognized a Net Loss of $28 m ...