Form of Fifth Amendment to the Parsons Employee Stock Ownership Plan 2019 Amendment and Restatement

Effective May 16, 2022, Sections 8.2(a)(2), 8.2(b)(2) and 8.2(c)(2) are hereby amended and restated in their entirety to read:

Effective May 16, 2022, the amendments to the form of distribution described above shall be implemented with respect to all Participants who make an initial application to receive distributions. Each Participant who previously elected installment distributions and has, prior to May 16, 2022, received payment of at least one installment, but who has not received full payment of their vested Account balance, shall have the opportunity to elect, prior to May 31, 2022, to continue to receive installment payments in accordance with the Participant’s existing payment election. Any such Participant who does not affirmatively elect to continue to receive payments in accordance with their existing installment payment election prior to May 31, 2022, shall receive a lump sum distribution of their vested Account balance on or about June 15, 2022.