X0202 SCHEDULE 13D/A 0000950142-26-000176 0002037164 XXXXXXXX LIVE 8 Class A Common Stock, $0.0001 Par Value per share 11/05/2026 false 0001823144 20459V105 GPGI, Inc.

309 Pierce Street Somerset NJ 08873

Thomas R. Knott (212) 256-8405 c/o Tungsten OpCo Holder LLC 445 Park Avenue, Suite 5B New York NY 10022 0002037164 N Tungsten OpCo Holder LLC PF OO N DE 0.00 49290409.00 0.00 49290409.00 49290409.00 N 17.0 OO Consists of 49,290,409 shares of Class A Common Stock, $0.0001 par value per share, issued by GPGI, Inc. (the "Class A Common Stock"), held of record by Tungsten OpCo Holder LLC ("Tungsten OpCo Holder"). Row (13) is based upon 289,901,892 shares of Class A Common Stock that were outstanding as of November 3, 2026. Y C 323 Holdings, LLC PF N DE 0.00 49290409.00 0.00 49290409.00 49290409.00 N 17.0 OO Consists of 49,290,409 shares of Class A Common Stock held of record by Tungsten OpCo Holder. C 323 Holdings, LLC ("C 323 Holdings") is a non-managing member of Tungsten OpCo Holder. Tungsten, as managing member, has the right to vote and dispose of the shares of Class A Common Stock held by Tungsten OpCo Holder, subject to certain consultation rights held by C 323 Holdings. Thomas R. Knott, an individual, is the sole and managing member of C 323 Holdings. Accordingly, Tungsten OpCo Holder, C 323 Holdings and Mr. Knott may be deemed to share beneficial ownership of the shares of Class A Common Stock held of record by Tungsten OpCo Holder. Row (13) is based upon 289,901,892 shares of Class A Common Stock that were outstanding as of November 3, 2026. Y Tungsten 2024 LLC PF N DE 0.00 50170372.00 0.00 50170372.00 50170372.00 N 17.3 OO Consists of (i) 879,963 shares of Class A Common Stock held of record by Tungsten 2024 LLC ("Tungsten"), and (ii) 49,290,409 shares of Class A Common Stock held of record by Tungsten OpCo Holder. Tungsten is the managing member of Tungsten OpCo Holder, John Cote is the manager of Tungsten and C 323 Holdings is a non-managing member of Tungsten OpCo Holder. Tungsten, as managing member, has the right to vote and dispose of the shares of Class A Common Stock held by Tungsten OpCo Holder, subject to certain consultation rights held by C 323 Holdings. Mr. Knott is the sole and managing member of C 323 Holdings. Accordingly, Tungsten, Tungsten OpCo Holder, Mr. John Cote, C 323 Holdings and Mr. Knott may each be deemed to share beneficial ownership of the shares of Class A Common Stock held of record by Tungsten OpCo Holder, and Tungsten and Mr. John Cote may each be deemed to share beneficial ownership of the shares of Class A Common Stock held of record by Tungsten. Row (13) is based upon 289,901,892 shares of Class A Common Stock that were outstanding as of November 3, 2026. Y Thomas R. Knott OO N X1 618759.00 49290409.00 618759.00 49290409.00 49909168.00 N 17.2 IN Consists of (i) 129,250 shares of Class A Common Stock held directly, (ii) 489,509 shares of Class A Common Stock that the Reporting Person has the right to acquire within 60 days through the exercise of vested stock options, and (iii) 49,290,409 shares of Class A Common Stock held of record by Tungsten OpCo Holder. Tungsten is the managing member of Tungsten OpCo Holder, John Cote is the manager of Tungsten and C 323 Holdings is a non-managing member of Tungsten OpCo Holder. Tungsten, as managing member, has the right to vote and dispose of the shares of Class A Common Stock held by Tungsten OpCo Holder, subject to certain consultation rights held by C 323 Holdings. Mr. Knott is the sole and managing member of C 323 Holdings. Accordingly, Tungsten, Tungsten OpCo Holder, Mr. John Cote, C 323 Holdings and Mr. Knott may each be deemed to share beneficial ownership of the shares of Class A Common Stock held of record by Tungsten OpCo Holder, and Tungsten and Mr. John Cote may each be deemed to share beneficial ownership of the shares of Class A Common Stock held of record by Tungsten. Row (13) is based upon 289,901,892 shares of Class A Common Stock that were outstanding as of November 3, 2026. Y John D. Cote OO N X1 1532455.00 50176172.00 1532455.00 50176172.00 51708627.00 N 17.8 IN Consists of (i) 32,455 shares of Class A Common Stock that the Reporting Person has the right to acquire within 60 days through the exercise of vested stock options, (ii) 879,963 shares of Class A Common Stock held of record by Tungsten, (iii) 49,290,409 shares of Class A Common Stock held of record by Tungsten OpCo Holder, (iv) 5,800 shares held by the Reporting Person's spouse and (v) 1,500,000 shares of Class A Common Stock held by Ridge Valley LLC. Tungsten is the managing member of Tungsten OpCo Holder, John Cote is the manager of Tungsten and C 323 Holdings is a non-managing member of Tungsten OpCo Holder. Tungsten, as managing member, has the right to vote and dispose of the shares of Class A Common Stock held by Tungsten OpCo Holder, subject to certain consultation rights held by C 323 Holdings. Mr. Knott is the sole and managing member of C 323 Holdings. Accordingly, Tungsten, Tungsten OpCo Holder, Mr. John Cote, C 323 Holdings and Mr. Knott may each be deemed to share beneficial ownership of the shares of Class A Common Stock held of record by Tungsten OpCo Holder, and Tungsten and Mr. John Cote may each be deemed to share beneficial ownership of the shares of Class A Common Stock held of record by Tungsten. Row (13) is based upon 289,901,892 shares of Class A Common Stock that were outstanding as of November 3, 2026. Class A Common Stock, $0.0001 Par Value per share GPGI, Inc. 309 Pierce Street Somerset NJ 08873 This Amendment No. 8 to Schedule 13D (this "Amendment No. 8") relates to the Class A Common Stock, par value $0.0001 per share (the "Class A Common Stock") of GPGI, Inc., a Nevada corporation (the "Issuer") and amends the initial statement on Schedule 13D filed by the Reporting Persons on September 19, 2024 (the "Initial Statement" and, as amended by those certain Amendment No. 1 filed on November 29, 2024, Amendment No. 2 filed on February 14, 2025, Amendment No. 3 filed on August 22, 2025, Amendment No. 4 filed on August 27, 2025, Amendment No. 5 filed on September 10, 2025, Amendment No. 6 filed on November 4, 2025, Amendment No. 7 filed on January 14, 2026 and this Amendment No. 8, the "Schedule 13D"). Capitalized terms used but not defined herein shall have the meanings ascribed to them in the Initial Statement. This Amendment No. 8 is being filed to reflect certain ministerial changes, including entity name changes, and not to reflect the acquisition or disposition of any shares of Class A Common Stock by the Reporting Persons. See Row (1) of each Reporting Person's cover page. The principal business office of the Reporting Persons is 445 Park Avenue, Suite 5B, New York, NY 10022. No change. No change. No change. No change. Item 3 is hereby amended and supplemented as specified in Appendix A. Item 5(a) is hereby amended and restated to read in its entirety as found in Appendix A. Item 5(b) is hereby amended and restated to read in its entirety as found in Appendix A. None. None. Not applicable. Tungsten OpCo Holder LLC /s/ John D. Cote 11/06/2026 C 323 Holdings, LLC /s/ Thomas R. Knott 11/06/2026 Tungsten 2024 LLC /s/ John D. Cote 11/06/2026 Thomas R. Knott /s/ Thomas R. Knott 11/06/2026 John D. Cote /s/ John D. Cote 11/06/2026