0000275880 2026-10-23 2026-10-23 false 0000275880 8-K 2026-10-23 Parsons Corporation DE 001-07782 95-3232481 14291 Park Meadow Drive, Suite 100 Chantilly VA 20151 (703) 988-8500 Not Applicable false false false false Common Stock, $1 par value PSN NYSE false