X0508 4 2026-03-09 0000275880 PARSONS CORP PSN 0001672832 Balaguer Susan M. PARSONS CORPORATION 14291 PARK MEADOW DR., #100 CHANTILLY VA 20151 false true false false Chief Human Resources Officer false Common Stock 2026-03-09 4 F false 798 62.55 D 37207 D Common Stock 1700.8145 I By ESOP /s/ Michael R. Kolloway, as attorney-in-fact 2026-03-10