Exhibit 99.1 PARSONS® t THIRD QUARTER 2024 Earnings Press Release . Parsons* third quarter 2022 earnings press release Parsons Reports Record Results Since IPO for the Third Quarter of 2024 Q3 2024 Financial Highlights ▪ Record revenue of $1.8 billion increases 28% year-over-year ▪ Record organic revenue growth of 26%, including six consecutive quarters with year-over-year organic growth above 20% ▪ Record net income increases 52% to $72 million ▪ Record adjusted EBITDA increases 31% to $167 million ▪ Recor ...