Alyeska discloses 21.4M shares (7.39%) of GPGI

GPGI, Inc. ownership update: Alyeska Investment Group, L.P. and related reporting persons beneficially own 21,395,253 shares of Class A Common Stock, representing 7.39% of the class as of March 31, 2026.

Rhea-AI Filing Summary

GPGI, Inc. ownership update: Alyeska Investment Group, L.P. and related reporting persons beneficially own 21,395,253 shares of Class A Common Stock, representing 7.39% of the class as of March 31, 2026. The filing attributes shared voting and dispositive power over these shares to the reporting persons.

The filing cites 289,642,587 shares outstanding per the Form 10-K dated March 12, 2026. The disclosure states Alyeska Investment Group, L.P. exercises voting and investment control for shares held by Alyeska Master Fund, L.P., and notes that Anand Parekh may be deemed a beneficial owner but disclaims beneficial ownership.

Insights

Corporate Governance Specialist

Large passive stake disclosed; governance influence is shared.

The filing reports 21,395,253 shares (7.39%) owned collectively by Alyeska entities as of March 31, 2026. Shared voting and dispositive power is recorded rather than sole control, which indicates coordinated influence through the investment manager structure.

Key dependencies include the ownership structure of Alyeska Master Fund, L.P., and the reporting persons' shared control. Subsequent filings could disclose changes in position or voting arrangements.

Key Figures

Beneficially owned shares: 21,395,253 shares Percent of class: 7.39% Shares outstanding: 289,642,587 shares

3 metrics

Beneficially owned shares 21,395,253 shares Amount beneficially owned as of March 31, 2026

Percent of class 7.39% Percent of Class A Common Stock represented by the reported shares

Shares outstanding 289,642,587 shares Shares outstanding per Form 10-K dated March 12, 2026

Key Terms

Beneficially own, Shared voting power, Schedule 13G

3 terms

Beneficially own regulatory

"As of March 31, 2026, the Reporting Persons beneficially own 21,395,253 shares"

Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.

Shared voting power corporate-governance

"Shared Voting Power 21,395,253.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

Schedule 13G regulatory

"form_type: SCHEDULE 13G"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

Who disclosed beneficial ownership of GPGI (CMPO)?

Alyeska Investment Group, L.P., Alyeska Fund GP, LLC, and Anand Parekh filed the Schedule 13G reporting beneficial ownership of 21,395,253 shares of Class A Common Stock as of March 31, 2026.

What percentage of GPGI's Class A stock does Alyeska own?

7.39% of the Class A Common Stock is reported as beneficially owned by the reporting persons, based on an outstanding share count cited from the Form 10-K dated March 12, 2026.

How many GPGI shares were outstanding per this filing?

289,642,587 shares outstanding is cited from the Form 10-K dated March 12, 2026, and is used as the basis for the reported 7.39% ownership percentage.

Who holds voting and dispositive power over the reported shares?

Shared voting and dispositive power over the 21,395,253 shares is reported for the Alyeska entities; the filing records 0 shares with sole voting or dispositive power.

Does Anand Parekh claim beneficial ownership of the shares?

The filing states Mr. Parekh may be deemed a beneficial owner because of his role, but it explicitly records that he disclaims beneficial ownership of the shares held through Alyeska entities.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/15/2026 - 04:32 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

GPGI, Inc.

(Name of Issuer)

Class A Common stock, par value $0.0001 per share

(Title of Class of Securities)

20459V105

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 20459V105

1

Names of Reporting Persons

Alyeska Investment Group, L.P.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 21,395,253.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 21,395,253.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

21,395,253.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

7.39 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP Number(s): 20459V105

1

Names of Reporting Persons

Alyeska Fund GP, LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 21,395,253.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 21,395,253.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

21,395,253.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

7.39 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP Number(s): 20459V105

1

Names of Reporting Persons

Anand Parekh

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 21,395,253.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 21,395,253.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

21,395,253.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

7.39 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: GPGI, Inc.
(b)	Address of issuer's principal executive offices: 309 Pierce Street, Somerset, NJ 08873
Item 2.
(a)	Name of person filing: (i) Alyeska Investment Group, L.P. (ii) Alyeska Fund GP, LLC (iii) Anand Parekh
(b)	Address or principal business office or, if none, residence: (i) 77 West Wacker Drive, 7th Floor, Chicago, IL 60601 (ii) 77 West Wacker Drive, 7th Floor, Chicago, IL 60601 (iii) 77 West Wacker Drive, 7th Floor, Chicago, IL 60601
(c)	Citizenship: (i) Alyeska Investment Group, L.P. - Delaware (ii) Alyeska Fund GP, LLC - Delaware (iii) Anand Parekh - United States of America
(d)	Title of class of securities: Class A Common stock, par value $0.0001 per share
(e)	CUSIP Number(s): 20459V105
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 21,395,253
(b)	Percent of class: 7.39%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 21,395,253
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 21,395,253
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Alyeska Investment Group, L.P.

Signature:	Jason Bragg
Name/Title:	Jason Bragg | Chief Financial Officer
Date:	05/15/2026

Alyeska Fund GP, LLC

Signature:	Jason Bragg
Name/Title:	Jason Bragg | Chief Financial Officer
Date:	05/15/2026

Anand Parekh

Signature:	Anand Parekh
Name/Title:	Anand Parekh | Self
Date:	05/15/2026

Exhibit Information

As of March 31, 2026, the Reporting Persons beneficially own 21,395,253 shares of Common Stock. The number of shares of Common Stock outstanding (289,642,587) is based on the Form 10-K dated March 12, 2026. Position held by Alyeska Master Fund, L.P. Alyeska Investment Group, L.P., as investment manager, exercises voting and investment control over the shares held by Alyeska Master Fund, L.P. Anand Parekh, as Chief Executive Officer of Alyeska Investment Group, L.P., may be deemed the beneficial owner of such shares. Mr. Parekh disclaims beneficial ownership of such shares. JOINT FILING STATEMENT PURSUANT TO RULE 13d-1(k) The undersigned acknowledge and agree that the foregoing statement on SCHEDULE 13G, is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on SCHEDULE 13G, shall be filed on behalf of each of the undersigned without the necessity of filing additional joint acquisition statements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate.