Exhibit 99.1 FOR IMMEDIATE RELEASE Comscore Reports Fourth Quarter and Full Year 2023 Results RESTON, Va., March 06, 2024 - Comscore, Inc. (Nasdaq: SCOR), a trusted partner for planning, transacting and evaluating media across platforms, today reported financial results for the fourth quarter and full year ended December 31, 2023. FY 2023 Financial Highlights • Revenue for 2023 was $371.3 million compared to$376.4 million in 2022 • Net loss of $79.4 million compared to$66.6 million in 2022, resulting prim ...