Parsons Reports Record First Quarter 2025 Results Exhibit 99.1 Total revenue for the first quarter of 2025 increased by $19 million, or 1$1.6 billion and was down 2% on an organic basis. Excluding the company's confidential contract, total revenue growth was 11% and organic revenue growth was 7% driven by double-digit growth in Parsons' cyber, transportation, and environmental remediation markets. Operating income increased 7% to $109 million primarily due to stronger program performance and a decreas ...