Changes in Beneficial Ownership · 4

Parsons Corporation

PSNNYSEEQUITYCurrent

Changes in Beneficial Ownership

Filed May 14, 2026Accepted May 14, 2026, 4:30 PM EDTFiling CIK 275880Accession 0001193125-26-224189

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Structured filing — 4

ownership.xml

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Filing details

Report period: 2026-05-13
Issuer: PARSONS CORP
Issuer CIK: 0000275880
Trading symbol: PSN

Reporting owner 1

Name: Ball George L.
Reporting owner CIK: 0001601188
Relationship: Director
Address: PARSONS CORPORATION, 14291 PARK MEADOW DR., #100, CHANTILLY, VA, 20151

Non-derivative transactions

Non-derivative transactions · 1 reported row
Security	Transaction date	Code	Amount	A / D	Price (USD)	Owned after	Ownership
Common Stock	2026-05-13	P · Form 4	10,000	A	50	150,383	D

Table key

P · Form 4: Purchase on the market or privately
A: Acquired
D: Direct

Non-derivative holdings

Non-derivative holdings · 1 reported row
Security	Amount owned	Ownership	Nature of ownership
Common Stock	205,000	I	By Family Trust^[F1]

Table key

I: Indirect

Footnotes

F1: These shares are held by the George L. and Coleen M. Ball Family Trust UA 01-18-2005 (the "Trust"). Mr. Ball has shared voting, investment and dispositive power over the shares held by the Trust.↩ 1

Signature 1

Signed: /s/ John Martinez, as attorney-in-fact
Date: 2026-05-14

Company context

Parsons (NYSE: PSN) is a leading disruptive technology provider in the national security and global infrastructure markets, with capabilities across cyber and electronic warfare, space and missile defense, transportation, water and environment, urban development, and critical infrastructure protection. Please visit Parsons.com and follow us on LinkedIn to learn how we’re making an impact.

Current securities

PSNNYSE · EQUITY · Current

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