Exhibit 99.1 FOR IMMEDIATE RELEASE Comscore Reports First Quarter 2024 Results RESTON, Va., May 7, 2024 – Comscore, Inc. (Nasdaq: SCOR), a trusted partner for planning, transacting and evaluating media across platforms, today reported financial results for the quarter ended March 31, 2024. Q1 2024 Financial Highlights • Revenue for the first quarter was $86.8 million compared to$91.6 million in Q1 2023 • Net loss of $1.1 million compared to$8.7 million in Q1 2023 • Adjusted EBITDA of $8.1 million compared ...