X0609 4 2026-05-26 0 0001823144 GPGI, Inc. GPGI 0001565784 Moriarty Kevin M false C/O GPGI, INC. 309 PIERCE STREET SOMERSET NJ 08873 1 0 0 0 0 Class A Common Stock 2026-05-26 4 P 0 3955.728 12.64 A 71010.728 D The price reported in Column 4 is the weighted average price. These shares were purchased in multiple transactions at prices ranging from $12.63 to $12.64, inclusive. The reporting person undertakes to provide GPGI, Inc. (the "Issuer"), any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such range. /s/ David A.P. Marshall, Attorney-in-Fact for Kevin M. Moriarty 2026-05-28