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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	6 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The accompanying consolidated financial statements are presented in conformity with generally accepted accounting principles in the United States ("U.S. GAAP") and pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”). Any reference in these notes to applicable guidance is meant to refer to U.S. GAAP as found in the Accounting Standards Codification (“ASC”) and Accounting Standards Updates (“ASU”) promulgated by the Financial Accounting Standards Board (“FASB”). The accompanying consolidated financial statements include the results of operations of the Company and its subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. All dollar amounts are in millions, unless otherwise noted. Share and per share amounts are presented on a post-conversion basis for all periods presented, unless otherwise noted. The Company's significant accounting policies are detailed in the Company's Annual Report on Form 10-K for the year ended December 31, 2025 filed with the SEC (the "2025 Annual Report"). Interim Financial Statements The accompanying consolidated financial statements have been prepared in accordance with U.S. GAAP and Article 10 of Regulation S-X of the SEC for interim financial information and should be read in conjunction with the 2025 Annual Report. The financial statements presented in this Quarterly Report on Form 10-Q are unaudited; however, in the opinion of management, the financial statements reflect all adjustments, consisting solely of normal, recurring adjustments, necessary for the fair presentation of the financial statements for the periods presented. The results disclosed in the condensed consolidated financial statements as of and for the six months ended June 30, 2026 are not necessarily indicative of the results to be expected for the full year. Use of Estimates The preparation of the consolidated financial statements requires management to make a number of estimates and assumptions relating to the reported amount of assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. The Company bases its estimates on historical experience, current business factors and various other assumptions believed to be reasonable under the circumstances, all of which are necessary in order to form a basis for determining the carrying values of assets and liabilities. Actual results may differ from those estimates and assumptions. The Company evaluates the adequacy of its reserves and the estimates used in calculations on an on-going basis. Significant areas requiring management judgment and estimates include the valuation of equity and liability classified stock‑based compensation awards, including stock options, restricted stock units, and performance‑based awards; the determination of fair value and probability‑of‑achievement assumptions for performance conditions; valuation allowances on deferred tax assets based on an assessment of recoverability against future taxable income; and estimates of the inputs used to calculate the tax receivable agreement ("TRA") liability. Variable Interest Entities The Company evaluates its contractual, ownership, and other interests in entities to determine if it has a variable interest in a variable interest entity (“VIE”) in accordance with ASC 810, Consolidation (“ASC 810”). A VIE is an entity that either lacks sufficient equity to permit it to finance its activities without additional subordinated financial support or for which the equity investors do not have characteristics of a controlling financial interest. These evaluations are complex and involve significant judgment. If the Company determines that an entity in which it holds a contractual or ownership interest is a VIE and that the Company is the primary beneficiary, the Company consolidates such entity in its consolidated financial statements. The primary beneficiary of a VIE is generally the party that meets both of the following criteria: (i) has the power to direct activities that most significantly affect the economic performance of the VIE; and (ii) has the obligation to absorb losses or the right to receive benefits that in either case could potentially be significant to the VIE. Management performs ongoing reassessments of whether changes in the facts and circumstances regarding the Company’s involvement with a VIE will cause the consolidation conclusion to change. Changes in consolidation status are applied prospectively. Equity Method Accounting Presentation for GPGI Holdings The Company has a variable interest in GPGI Holdings, the Company’s wholly owned operating subsidiary. GPGI Holdings is considered a VIE as GPGI, Inc. is the sole holder of GPGI Holdings’ equity investment at risk but is not able to direct the activities that most significantly impact GPGI Holdings’ economic performance. Effective as of February 28, 2025, the date of the Spin-Off of Resolute Holdings, and as a result of GPGI Holdings entering into the CompoSecure Management Agreement with Resolute Holdings, the Company determined that GPGI Holdings is a VIE for which the Company is not the primary beneficiary. Therefore, the results of operations and cash flows of the Company's wholly owned subsidiary, GPGI Holdings, and the operating companies which are its subsidiaries, are not consolidated in the financial statements included in this report and are instead accounted for under the equity method of accounting. Under the equity method of accounting, the financial information of GPGI Holdings is not reflected within the Company’s consolidated financial statements. The Company’s share of the earnings of GPGI Holdings is reported in a single line item within the Company’s consolidated statements of operations and cash flows as earnings (losses) in equity method investment. The carrying value of the Company's investment in GPGI Holdings is reported in the Company’s consolidated balance sheets as an equity method investment. This equity method investment is increased (decreased) by the Company's share of the earnings (losses) of GPGI Holdings and is also decreased by the Company’s share of dividends declared by GPGI Holdings from time to time, if any. No gain or loss was recognized upon deconsolidation of GPGI Holdings as an equity method investment because Resolute Holdings and the Company were both under common control at the date of the Spin-Off and execution of the CompoSecure Management Agreement. Distributions received from equity method investees are classified in the consolidated statements of cash flows using the cumulative earnings approach. Under this method, distributions received are classified as operating cash inflows to the extent they represent a return on investment based on cumulative equity earnings recognized, adjusted for the amortization of basis differences. Distributions in excess of cumulative adjusted equity earnings are considered a return of investment and are classified as investing cash inflows. Effective upon the closing of the Husky Transaction, and as a result of Husky entering into the Husky Management Agreement with Resolute Holdings, GPGI Holdings determined that it does not have the power to direct the activities that most significantly impact Husky’s economic performance and is therefore not the primary beneficiary. As a result, Husky is not consolidated by GPGI Holdings and is accounted for under the equity method of accounting, under which GPGI Holdings’ share of Husky’s earnings or losses is reflected in a single line item in GPGI Holdings’ results of operations and the carrying value of the investment is adjusted accordingly. For GPGI, this activity is included within earnings (losses) in equity method investment related to GPGI Holdings, which represents GPGI’s share of earnings or losses from its equity method investment in GPGI Holdings. Treasury Stock The Company’s stock repurchase program authorizes the Company to repurchase shares in open market and/or private transactions from time to time based on numerous factors, including, but not limited to, share price and other market conditions, the Company’s ongoing capital allocation planning, cash and debt levels, and other demands for cash. The Company records the shares repurchased as treasury stock based on the amount paid to repurchase such shares. Direct costs incurred to acquire treasury stock are classified as financing activities in the consolidated statements of cash flows. The ultimate use of the repurchased shares has not been determined, therefore, the repurchased shares are presented in the Company's consolidated financial statements as a reduction to shareholders' equity (deficit). See Note 4 - Equity Structure for further information on the repurchase of shares. Net Income (Loss) Per Share The Company complies with the accounting and disclosure requirements of ASC 260, Earnings Per Share. Income (loss) per common share is computed by dividing net income (loss) by the weighted average number of common shares outstanding for the period. The weighted-average number of common shares outstanding during the period consists of Class A Common Stock. Diluted net loss per share is computed by dividing the net loss allocated to potentially dilutive instruments attributable to controlling interest by the basic weighted-average number of shares of common stock outstanding during the period, adjusted for the potentially dilutive shares of common stock equivalents resulting from the assumed exercise of the warrants, payment of the earnout consideration shares, exercise and vesting of equity awards only if the effect is not anti-dilutive. Fair Value Measurements The Company determines fair value in accordance with ASC 820, Fair Value Measurement, which established a hierarchy for the inputs used to measure the fair value of financial assets and liabilities based on the source of the inputs, which generally range from quoted prices for identical instruments in a principal trading market to estimates determined using significant unobservable inputs. The fair value hierarchy prioritizes the inputs, which refer to assumptions that market participants would use in pricing an asset or liability, based upon the highest and best use, into three levels as follows: The standard describes three levels of inputs that may be used to measure fair value: •Level 1: Unadjusted quoted prices in active markets for identical assets or liabilities at the measurement date. •Level 2: Observable inputs other than unadjusted quoted prices in active markets for identical assets or liabilities such as: ◦Quoted prices for similar assets or liabilities in active markets ◦Quoted prices for identical or similar assets or liabilities in inactive markets ◦Inputs other than quoted prices that are observable for the asset or liability ◦Inputs that are derived principally from or corroborated by observable market data by correlation or other mean •Level 3: Unobservable inputs in which there is little or no market data available, which are significant to the fair value measurement and require the Company to develop its own assumptions. The Company’s financial assets and liabilities measured at fair value consisted of cash and cash equivalents, accounts receivable, accounts payable and debt. Cash and cash equivalents consisted of bank deposits and short-term investments, such as money market funds, the fair value of which is based on quoted market prices, a Level 1 fair value measure. As of June 30, 2026 and December 31, 2025, the carrying values of cash, cash equivalents, accounts receivable and accounts payable approximate fair value because of the short-term maturity of these instruments. Recently Issued Accounting Pronouncements Not Yet Adopted In December 2025, the FASB issued Accounting Standards Update No. 2025‑11, Interim Reporting (Topic 270): Narrow‑Scope Improvements (“ASU 2025‑11”), which clarifies and updates interim reporting requirements under ASC 270. The amendments aim to improve consistency and decision‑usefulness by refining the objective of interim reporting and clarifying required updates for significant events and changes occurring during interim periods. For public business entities ("PBEs"), ASU 2025‑11 is effective for interim periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact of ASU 2025-11 on its consolidated financial statements. On September 29, 2025, the FASB released Accounting Standards Update No. 2025-07, Scope Refinements for Derivatives and Share-Based Noncash Consideration (“ASU 2025-07”), which amends ASC 815 and ASC 606. ASU 2025-07 revises the guidance in ASC 815 and ASC 606 to clarify that the update was issued to reduce complexity and diversity in practice by: (1) refining the application of derivative accounting for contracts with entity-specific reference terms; and (2) clarifying the accounting for share-based noncash consideration in revenue arrangements. For all entities, ASU 2025-07 will become effective for annual reporting periods beginning after December 15, 2026, including interim reporting periods within those annual reporting periods. The Company is currently assessing the impact that the adoption of this ASU will have on the Company's consolidated financial statements. On November 4, 2024, the FASB issued ASU 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires disaggregated disclosure of income statement expenses for PBEs. The ASU does not change the expense captions an entity presents on the face of the income statement; rather, it requires disaggregation of certain expense captions into specified categories in disclosures within the footnotes to the financial statements. ASU 2024-03 is effective for all PBEs for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027 and early adoption is permitted. On January 7, 2025, the FASB released ASU 2025-01 which revises the effective date of ASU 2024-03 “to clarify that all public business entities are required to adopt the guidance in annual reporting periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027.” The Company is assessing the impact that the adoption of this ASU will have on the Company's consolidated financial statements.

DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS	6 Months Ended
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS	Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS	1. DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS GPGI, Inc. (formerly CompoSecure, Inc.) (“GPGI” and, together with its subsidiaries as the context requires, the "Company", “we”, “us” or “our”), is a permanent capital platform designed to acquire, own, and scale high-quality businesses that hold “great positions in good industries.” The operations, capital allocation, and strategy of our operating businesses are managed by Resolute Holdings Management, Inc. (NYSE: RHLD) (“Resolute Holdings”), an entity that was initially formed as a wholly owned subsidiary of the Company and was subsequently spun off to the Company's shareholders on a pro rata basis. The Company has evolved from a single operating business into a diversified permanent capital platform that is comprised of two market leading businesses: (1) CompoSecure, L.L.C. (together with its subsidiaries, “CompoSecure”), a leading manufacturer of premium metal credit cards and provider of secure authentication solutions, and (2) Husky Holdings LLC ("Husky Holdings," and together with its subsidiaries, “Husky”), a leading manufacturer of injection molding equipment and aftermarket services for the food, packaging, and medical markets. CompoSecure, founded in 2000, and headquartered in Somerset, New Jersey, is a global leader in the design and manufacturing of premium metal payment cards and secure authentication solutions. The company pioneered the use of metal in payment cards dating back to 2003 and combines industry-leading innovation, advanced materials science, and proprietary manufacturing processes to deliver highly differentiated products to its customers. CompoSecure’s metal payment cards integrate a metal core with EMV® (acronym representing Europay, Mastercard, and Visa) chips, magnetic stripes, and contactless payment technology, while meeting stringent certification requirements from global payment networks. CompoSecure’s metal cards deliver a distinctive weight, a premium aesthetic, and enhanced durability for consumers, while its issuer customers benefit from the ability to attract higher-value consumers, reduce cardholder churn, and unlock higher customer spend relative to traditional plastic cards. Husky, founded in 1953, and headquartered in Bolton, Ontario, Canada, is a leading global manufacturer of highly engineered injection molding equipment and aftermarket tooling and services. Husky has focused on developing highly technical precision technologies instrumental in the delivery of food, beverages, medical devices, and other applications including general packaging and closures, thinwall packaging, and consumer products. Husky delivers its integrated capabilities through a combination of systems, tooling, and aftermarket parts and services to create value for customers throughout the entire lifecycle of its solutions. As a function of the Company’s permanent capital base, we believe our platform is a structurally advantaged buyer for private assets. Specifically, we believe GPGI offers an alternative and more favorable exit pathway for large, sponsor-owned assets that are otherwise limited to an initial public offering. We can offer more upfront cash proceeds to the seller, provide speed and certainty, lower the concentrated ownership overhang with access to our high-quality, long-term, and diversified shareholder base, set up the business for success with right-sized leverage, and provide the opportunity to participate in future Resolute Holdings-led value creation. We believe these structural benefits collectively position GPGI to make accretive acquisitions of high-quality businesses at a fair price. The evolution of the Company from a single operating business into the diversified permanent capital platform it is now began on August 7, 2024, when affiliates of Resolute Compo Holdings, LLC, including Tungsten 2024 LLC (collectively, "Tungsten") entered into stock purchase agreements with all of the holders of the Company's previously outstanding shares of Class B common stock, pursuant to which the selling Class B stockholders exchanged their 51,908,422 Class B units of CompoSecure Holdings, L.L.C. (now GPGI Holdings, L.L.C., "GPGI Holdings") and corresponding shares of Class B common stock of the Company for shares of Class A common stock, par value $0.0001 per share, of the Company (the "Class A Common Stock") (collectively, the "Tungsten Transactions") eliminating the Company's then-existing dual-share class structure. The Company was not party to the stock purchase agreements related to the Tungsten Transactions. The Tungsten Transactions closed on September 17, 2024 and as a result, Tungsten became the majority owner of the Company by acquiring 49,290,409 shares of Class A Common Stock of the Company for an aggregate purchase price of approximately $372.0, or $7.55 per share, representing an approximately 60% voting interest in the Company at the time of the Tungsten Transactions. On September 27, 2024, Resolute Holdings was created as a wholly owned subsidiary of GPGI Holdings and subsequently on February 28, 2025, the Company distributed all shares of common stock of Resolute Holdings (“Resolute Holdings Common Stock”) on a pro rata basis to the holders of the Company’s Class A Common Stock as of the February 20, 2025 record date (the “Spin-Off”). Each stockholder of record who held shares of the Company’s Class A Common Stock on February 20, 2025, received one share of Resolute Holdings Common Stock for every twelve shares of the Company’s Class A Common Stock then held. In connection with the completion of the Spin-Off, GPGI Holdings entered into a management agreement with Resolute Holdings (the "CompoSecure Management Agreement"), pursuant to which Resolute Holdings is responsible for managing the day-to-day business and operations and overseeing the strategy of GPGI Holdings and its controlled affiliates in exchange for a fee. Pursuant to the CompoSecure Management Agreement, GPGI Holdings pays Resolute Holdings a quarterly management fee (the “CompoSecure Management Fee”), payable in arrears, in a cash amount equal to 2.5% of GPGI Holdings’ last twelve months' Adjusted EBITDA, as defined in the CompoSecure Management Agreement, measured for the period ending on the fiscal quarter then ended (“CompoSecure Management Agreement Adjusted EBITDA”). CompoSecure Management Agreement Adjusted EBITDA reflects (a) GPGI Holdings’ earnings before interest, taxes, depreciation, depletion and amortization, extraordinary losses and expenses, one-time and non-recurring expenses, and the CompoSecure Management Fee, less (b) the Company’s selling, general and administrative expenses, adjusted for the same items above (“Parent Allocated Expense”, as defined in the CompoSecure Management Agreement). CompoSecure Management Agreement Adjusted EBITDA is calculated without duplication of Husky’s Adjusted EBITDA and its share of Parent Allocated Expense (each as defined in the Husky Management Agreement). GPGI Holdings is also required to reimburse Resolute Holdings and its affiliates for Resolute Holdings’ documented costs and expenses incurred on behalf of GPGI Holdings other than those expenses related to Resolute Holdings’ or its affiliates’ personnel who provide services to GPGI Holdings under the CompoSecure Management Agreement. Resolute Holdings will determine, in its sole and absolute discretion, whether a cost or expense will be borne by Resolute Holdings or by GPGI Holdings. The CompoSecure Management Agreement has an initial term of 10 years and shall automatically renew for successive ten-year terms unless terminated in accordance with its terms. Resolute Holdings and GPGI Holdings may each terminate the Management Agreement upon the occurrence of certain other limited events, and in connection with certain of these limited events, Resolute Holdings has the right to require GPGI Holdings to pay a termination fee, which may be paid in cash, shares of the Company's Class A Common Stock or a combination of cash and stock. The CompoSecure Management Agreement also provides for certain indemnification rights in Resolute Holdings’ favor, as well as certain additional covenants, representations and warranties. On November 2, 2025, GPGI entered into a Share Purchase Agreement with entities affiliated with Platinum Equity, LLC (“Platinum Equity”) pursuant to which GPGI would combine with Husky Technologies Limited for an enterprise value of approximately $4,976 financed with debt, cash and shares of GPGI’s Class A Common Stock (“Husky Transaction”). The Husky Transaction was completed on January 12, 2026 (the "Husky Transaction Date"). In conjunction with the closing of the Husky Transaction, Resolute Holdings entered into a management agreement with Husky (the "Husky Management Agreement") on substantially identical terms as the CompoSecure Management Agreement (as described above), pursuant to which Resolute Holdings provides management and other related services to Husky in exchange for payment of a quarterly management fee ("Husky Management Fee"), payable in arrears, in a cash amount equal to 2.5% of Husky's last twelve months' Adjusted EBITDA, as defined in the Husky Management Agreement, measured for the period ending on the fiscal quarter then ended (“Husky Management Agreement Adjusted EBITDA”). Husky Management Agreement Adjusted EBITDA reflects a) Husky's earnings before interest, taxes, depreciation, depletion and amortization, extraordinary losses and expenses, one-time and non-recurring expenses, and the Husky Management Fee, less b) the Company’s selling, general and administrative expenses, adjusted for the same items above (“Parent Allocated Expense”, as defined in the Husky Management Agreement). The Husky Management Fee is calculated without duplication of GPGI Holdings' Adjusted EBITDA and share of Parent Allocated Expense (each as defined in the CompoSecure Management Agreement). GPGI historically operated and controlled the business and affairs of GPGI Holdings and thus consolidated GPGI Holdings. As of February 28, 2025, due to the Spin-Off and the execution of the CompoSecure Management Agreement, Resolute Holdings controls and is required to consolidate GPGI Holdings. As a result, the Company no longer consolidates GPGI Holdings and accounts for the investment in GPGI Holdings as an equity method investment. In addition, Husky is not consolidated by the Company and is accounted for as an equity method investment of GPGI Holdings. Accordingly, the Company’s consolidated financial statements reflect its indirect interest in Husky through its equity method investment in GPGI Holdings. The Company’s results of operations and financial statements for the six months ended June 30, 2026 reflect the results of Husky only for the period subsequent to the Husky Transaction Date, representing the portion of the year during which the Company owned the Husky business. The Company’s current entity structure as of the date of this report is as follows:

NET INCOME (LOSS) PER SHARE

6 Months Ended

Jun. 30, 2026

Earnings Per Share [Abstract]

NET INCOME (LOSS) PER SHARE

7. NET INCOME (LOSS) PER SHARE

Basic net income (loss) per share has been computed by dividing net income (loss) by the weighted average number of shares of Class A Common Stock outstanding for the same period. Diluted net income (loss) per share was computed by dividing net income (loss) by the weighted-average number of shares of Class A Common Stock outstanding adjusted to give effect to potentially dilutive securities.

The following table sets forth the computation of net income (loss) used to compute basic and diluted net income (loss) per share of Class A Common Stock for the three and six months ended June 30, 2026 and June 30, 2025.


	Three Months Ended June 30,				Six Months Ended June 30,
	2026		2025		2026		2025
Basic and diluted:
Net income (loss)	$	50.3	$	(26.1)	$	(184.7)	$	(4.6)
Plus: adjustment due to net effect of equity awards and warrant revaluation to net income (loss)	—		—		—		—
Net income (loss), after adjustment	$	50.3	$	(26.1)	$	(184.7)	$	(4.6)

Weighted average common shares outstanding used in computing net income (loss) per share - basic	289,863,943		102,321,754		279,983,642		102,181,462
Plus: effect of dilutive equity awards	2,486,887		—		—		—
Weighted average common shares outstanding used in computing net income (loss) per share - diluted	292,350,830		102,321,754		279,983,642		102,181,462

Net income (loss) per share-basic	$	0.17	$	(0.26)	$	(0.66)	$	(0.05)
Net income (loss) per share-diluted	$	0.17	$	(0.26)	$	(0.66)	$	(0.05)

Securities that could potentially be dilutive are excluded from the computation of diluted earnings per share when the exercise price exceeds the average closing price of the Company’s Class A Common Stock during the period, because their inclusion would result in an antidilutive effect on per share amounts. All outstanding and unvested stock‑based compensation awards under the Equity Plan, including those attributable to GPGI Holdings and Contractors are included in the diluted earnings per share denominator.

The following securities were not included in the calculation of net income (loss) per diluted share because their effects were anti-dilutive:


	Three Months Ended June 30,		Six Months Ended June 30,
	2026	2025	2026	2025
Potentially dilutive securities:
Warrants	—	21,989,079	—	21,989,079
Earnout consideration shares	—	4,386,097	—	4,386,097
Equity awards	7,885,903	3,283,566	5,605,279	1,936,232

SEGMENT REPORTING (Tables)

6 Months Ended

Jun. 30, 2026

Segment Reporting [Abstract]

Schedule of Segment Reporting

The information below represents a disaggregation of the operating results of the Company segments consistent with the information reviewed by the CODM.


	Three Months Ended June 30, 2026
	CompoSecure		Husky		Total
Net Sales	$	133.6	$	339.6	$	473.2
Less(1)
Material	22.0		116.1		138.1
Personnel	31.7		101.6		133.3
Overhead	13.1		32.6		45.7
Professional fees	3.3		4.7		8.0
Management fees	4.7		8.9		13.6
Sales and marketing	0.7		4.5		5.2
Other segment expenses(2)	2.9		6.3		9.2
Adjusted EBITDA	$	55.2	$	64.9	120.1
Reconciliation of Adjusted EBITDA to net income (loss)
Corporate Adjusted EBITDA(3)					(6.2)
Depreciation and amortization					(64.3)
Stock-based compensation					(6.1)
Income tax expense					(23.3)
Interest expense, net					(33.0)
Foreign currency gains					1.9
Husky Transaction costs					(1.3)
Loss on disposal of assets					(0.3)
Severance cost					(3.6)
Loss on remeasurement of TRA liability					(6.2)
Fair value inventory step-up(4)					(23.6)
Gain on debt extinguishment(4)					96.2
Net income (loss)					$	50.3

(1) The significant expense categories and amounts align with the segment-level information that is regularly provided to the CODM, which nets out discrete items noted in the reconciliation of Adjusted EBITDA to net income (loss).

(2) Other segment expenses relate to miscellaneous expenses.

(3) Corporate Adjusted EBITDA consists of the activity of the corporate entities, which are not considered operating segments.

(4) There were measurement period adjustments reflected in the condensed consolidated statements of operations in the current period related to the Husky Transaction.


	Six Months Ended June 30, 2026
	CompoSecure		Husky		Total
Net Sales	$	264.0	$	617.0	$	881.0
Less(1)
Material	49.0		215.4		264.4
Personnel	64.7		195.9		260.6
Overhead	25.3		55.7		81.0
Professional fees	6.3		7.8		14.1
Management fees	9.2		17.3		26.5
Sales and marketing	1.1		8.6		9.7
Other segment expenses(2)	5.6		10.2		15.8
Adjusted EBITDA	$	102.8	$	106.1	208.9
Reconciliation of Adjusted EBITDA to net income (loss)
Corporate Adjusted EBITDA(3)					(10.0)
Depreciation and amortization					(123.6)
Stock-based compensation					(10.1)
Income tax expense					(30.1)
Interest expense, net					(62.5)
Foreign currency gains					4.2
Husky Transaction costs					(94.2)
Loss on disposal of assets					(0.9)
Severance cost					(4.1)
Loss on remeasurement of TRA liability					(28.1)
Fair value inventory step-up(4)					(23.6)
Loss on debt extinguishment(4)					(10.6)
Net income (loss)					$	(184.7)

(2) Other segment expenses relate to miscellaneous expenses.

(3) Corporate Adjusted EBITDA consists of the activity of the corporate entities, which are not considered operating segments.

(4) There were measurement period adjustments reflected in the condensed consolidated statements of operations in the current period related to the Husky Transaction.


	Three Months Ended June 30, 2025
	CompoSecure		Total
Net Sales	$	119.6	$	119.6
Less(1)
Material	20.7		20.7
Personnel	29.2		29.2
Overhead	12.5		12.5
Professional fees	3.3		3.3
Management fees	3.4		3.4
Sales and marketing	0.3		0.3
Other segment expenses(2)	1.6		1.6
Adjusted EBITDA	$	48.6	48.6
Reconciliation of Adjusted EBITDA to net income (loss)
Corporate Adjusted EBITDA(3)			(2.3)
Depreciation and amortization			(2.3)
Stock-based compensation			(5.1)
Income tax expense (benefit)			1.8
Interest expense, net			(2.1)
Mark to market adjustments, net			(64.1)
Spin-Off costs			(0.6)
Net income (loss)			$	(26.1)

(2) Other segment expenses relate to miscellaneous expenses.

(3) Corporate Adjusted EBITDA consists of the activity of the corporate entities, which are not considered operating segments.


	Six Months Ended June 30, 2025
	CompoSecure		Total
Net Sales	$	223.5	$	223.5
Less(1)
Material	39.5		39.5
Personnel	58.5		58.5
Overhead	25.3		25.3
Professional fees	8.4		8.4
Management fees	4.5		4.5
Sales and marketing	0.6		0.6
Other segment expenses(2)	2.2		2.2
Adjusted EBITDA	$	84.5	84.5
Reconciliation of Adjusted EBITDA to net income (loss)
Corporate Adjusted EBITDA(3)			(3.4)
Depreciation and amortization			(4.6)
Stock-based compensation			(10.8)
Income tax expense			(25.2)
Interest expense, net			(4.5)
Mark to market adjustments, net			(35.0)
Spin-Off costs			(5.6)
Net income (loss)			$	(4.6)

(2) Other segment expenses relate to miscellaneous expenses.

(3) Corporate Adjusted EBITDA consists of the activity of the corporate entities, which are not considered operating segments.

The following table reconciles each reportable segment's cash and assets to the Company's totals.


	June 30, 2026
	CompoSecure		Husky		Elimination		Total

Total cash	$	33.5	$	71.3	$	(97.1)	$	7.7
Total assets	$	215.6	$	5,859.6	$	(2,612.8)	$	3,462.4


	June 30, 2025
	CompoSecure		Elimination		Total

Total cash	$	91.7	$	(86.9)	$	4.8
Total assets	$	242.6	$	30.0	$	272.6

EQUITY STRUCTURE (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 05, 2026	Jan. 12, 2026	Jun. 30, 2026	Jun. 30, 2026	Dec. 31, 2025	Dec. 03, 2025	May 31, 2025	Apr. 30, 2025	Aug. 07, 2024
Class of Warrant or Right [Line Items]
Common stock, par value (in dollars per share)									$ 0.0001
Warrants outstanding (in shares)			0	0	0
Warrants
Class of Warrant or Right [Line Items]
Warrants or rights outstanding, redemption, price per share (in dollars per share)						$ 0.01
Class A Common Stock
Class of Warrant or Right [Line Items]
Common stock, shares authorized (in shares)			1,000,000,000	1,000,000,000	1,000,000,000		1,000,000,000	250,000,000
Common stock, par value (in dollars per share)	$ 0.0001		$ 0.0001	$ 0.0001	$ 0.0001
Conversion of stock, shares converted (in shares)	1
Class A common stock issued pursuant to equity-based plans, net of shares withheld for taxes (in shares)			28,420	1,870,372
Cash dividends			$ 0.8	$ 1.5
Share repurchase program, authorized, amount			100.0	100.0
Share repurchase program, remaining authorized, amount			$ 87.8	$ 87.8
Treasury stock (in shares)				0	647,782
Class A Common Stock \| PIPE Purchase Agreement
Class of Warrant or Right [Line Items]
Shares issued in public offering (in shares)				106,056,083
Class A Common Stock \| Husky Holdings
Class of Warrant or Right [Line Items]
Business combination, consideration transferred, equity interest, share issued (in shares)		54,978,334

RELATED PARTY TRANSACTIONS (Details) $ in Millions			3 Months Ended		6 Months Ended
RELATED PARTY TRANSACTIONS (Details) $ in Millions	Jan. 12, 2026 member	Feb. 28, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) shares	Jun. 30, 2025 USD ($)
Related Party Transaction [Line Items]
Management fee percentage			2.50%		2.50%
Related Party \| CompoSecure Holdings, L.L.C
Related Party Transaction [Line Items]
Management fees			$ 4.7	$ 3.4	$ 9.2
CompoSecure Management Agreement \| Related Party
Related Party Transaction [Line Items]
Management fee percentage			2.50%		2.50%
Management agreement, renewal term					10 years
Management fees						$ 4.5
Management agreement, expenses			$ 0.0	$ 0.0	$ 0.2	$ 0.1
Husky Management Agreement \| Related Party \| Husky Holdings
Related Party Transaction [Line Items]
Management fee percentage			2.50%		2.50%
Management agreement, renewal term					10 years
Management fees			$ 8.9		$ 17.3
Management agreement, expenses			$ 0.0		$ 0.0
Management agreement, initial term					10 years
Board Adviser Agreement \| Related Party
Related Party Transaction [Line Items]
Management agreement, renewal term		12 months
Management agreement, initial term		12 months
Annual cash retainer fee		$ 0.1
Share-based compensation arrangement by share-based payment award, options, outstanding, intrinsic value		$ 0.2
PIPE Purchase Agreement \| Related Party \| Class A Common Stock
Related Party Transaction [Line Items]
Related party transaction, share purchased (in shares) \| shares					813,523
Investor Rights Agreement \| Related Party
Related Party Transaction [Line Items]
Related party transaction board seats above ten percent \| member	2
Related party transaction board seats above five percent \| member	1
Related party transaction lockup period	90 days
Investor Rights Agreement \| Related Party \| Maximum
Related Party Transaction [Line Items]
Related party transaction ownership threshold percent	10.00%
Investor Rights Agreement \| Related Party \| Minimum
Related Party Transaction [Line Items]
Related party transaction ownership threshold percent	5.00%
Registration Rights Agreement \| Related Party
Related Party Transaction [Line Items]
Related party transaction demand registration measurement period	12 months

STOCK-BASED COMPENSATION - Options Activity Under the Equity Plan (Details) - Stock option expense	6 Months Ended
	Jun. 30, 2026 $ / shares shares
Number of Shares
Outstanding, beginning balance (in shares) \| shares	2,799,169
Granted (in shares) \| shares	4,157,878
Exercised (in shares) \| shares	(215,000)
Cancelled (in shares) \| shares	0
Outstanding, ending balance (in shares) \| shares	6,742,047
Weighted Average Exercise Price Per Share
Outstanding, beginning balance (in dollars per share) \| $ / shares	$ 11.65
Granted (in dollars per share) \| $ / shares	21.72
Exercised (in dollars per share) \| $ / shares	3.69
Cancelled (in dollars per share) \| $ / shares	0
Outstanding, ending balance (in dollars per share) \| $ / shares	$ 18.08

COMMITMENTS AND CONTINGENCIES - Tax Receivable Agreement Maturity (Details) $ in Millions	Jun. 30, 2026 USD ($)
Tax Receivable Agreement Liability, To Be Paid, Maturity [Abstract]
2026 (excluding the three months ended March 31, 2026)	$ 1.6
2027	16.9
2028	17.2
2029	17.5
2030	17.9
Later years	213.8
Total payments	$ 284.9

NET INCOME (LOSS) PER SHARE - Compute Basic Net (Loss) Income Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Earnings Per Share [Abstract]
Net income (loss)	$ 50.3	$ (26.1)	$ (184.7)	$ (4.6)
Plus: adjustment due to net effect of equity awards and warrant revaluation to net income (loss)	0.0	0.0	0.0	0.0
Net income (loss), after adjustment	$ 50.3	$ (26.1)	$ (184.7)	$ (4.6)
Weighted average common shares outstanding used in computing net income (loss) per share - basic (in shares)	289,863,943	102,321,754	279,983,642	102,181,462
Plus: effect of dilutive equity awards and warrants (in shares)	2,486,887	0	0	0
Weighted average common shares outstanding used in computing net income (loss) per share - diluted (in shares)	292,350,830	102,321,754	279,983,642	102,181,462
Net income (loss) per share-basic (in dollars per share)	$ 0.17	$ (0.26)	$ (0.66)	$ (0.05)
Net income (loss) per share-diluted (in dollars per share)	$ 0.17	$ (0.26)	$ (0.66)	$ (0.05)

INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
INCOME TAXES (Details) - USD ($) $ in Millions	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 1.2	$ (1.8)	$ 4.8	$ 25.2
Effective income tax rate	(7.70%)	2.70%	(5.20%)	(76.10%)

SEGMENT REPORTING - Narrative (Details) $ in Millions				3 Months Ended
SEGMENT REPORTING - Narrative (Details) $ in Millions	Jan. 12, 2026 segment	Feb. 28, 2025 segment	Aug. 07, 2024 segment	Jun. 30, 2026 USD ($)
Segment Reporting [Abstract]
Number of operating segments	2	1	1
Number of reportable segments	2	1
Segment reporting information corporate adjusted EBITDA \| $				$ 1.1

EQUITY METHOD INVESTMENT - Reconciliation of the Company’s Equity Method Investments (Details)	6 Months Ended
	Jun. 30, 2026 USD ($)
Equity Method Investments [Roll Forward]
Beginning balance	$ 125,500,000
Ending balance	3,172,100,000
GPGI Holdings
Equity Method Investments [Roll Forward]
Beginning balance	125,500,000
Stock-based compensation granted to GPGI Holdings' employees	4,800,000
Earnings (losses) in equity method investment of GPGI Holdings	(87,000,000.0)
Investment in GPGI Holdings in relation to Husky Transaction-Cash	1,962,000,000
Investment in GPGI Holdings in relation to Husky Transaction-Equity	1,143,000,000
Investments in GPGI Holdings	158,400,000
Distributions to GPGI, Inc.	(134,600,000)
Ending balance	$ 3,172,100,000

RELATED PARTY TRANSACTIONS	6 Months Ended
RELATED PARTY TRANSACTIONS	Jun. 30, 2026
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS	10. RELATED PARTY TRANSACTIONS Governance Agreement In connection with the Tungsten Transactions, on September 17, 2024, the Company and Tungsten entered into that certain Governance Agreement (as waived and/or amended on February 28, 2025, July 12, 2025 and January 12, 2026, the "Governance Agreement"), which established certain governance matters, including ongoing obligations with respect to the size of the board of directors, election of specified directors (including independent directors) and other matters. Separation and Distribution Agreement In connection with the completion of the Spin-Off, the Company and Resolute Holdings entered into a Separation and Distribution Agreement (the "Separation and Distribution Agreement") which set out the principal actions to be taken in connection with the Spin-Off, including the transfer of assets and assumption of liabilities, and certain adjustments of existing GPGI awards, and establishes certain rights and obligations between Resolute Holdings and the Company following the Spin-Off, including procedures with respect to claims subject to indemnification, the exchange of information between Resolute Holdings and the Company, and tax and other matters. After the Spin-Off and execution of the CompoSecure Management Agreement, the Company and Resolute Holdings were under common control by Tungsten up until the Husky Transaction Date. Below is a summary of the significant agreements executed in connection with the Spin-Off. CompoSecure Management Agreement Pursuant to the CompoSecure Management Agreement, GPGI Holdings pays Resolute Holdings a quarterly management fee, payable in arrears, in a cash amount equal to 2.5% of GPGI Holdings’ last twelve months' Adjusted EBITDA as defined in the CompoSecure Management Agreement. GPGI Holdings is also required to reimburse Resolute Holdings and its affiliates for documented costs and expenses incurred on behalf of GPGI Holdings other than those expenses related to Resolute Holdings’ or its affiliates’ personnel who provide services to GPGI Holdings under the CompoSecure Management Agreement incurred on GPGI Holdings’ behalf. Resolute Holdings will determine, in its sole and absolute discretion, whether a cost or expense will be borne by Resolute Holdings or by GPGI Holdings. The CompoSecure Management Agreement has an initial term of 10 years and shall automatically renew for successive ten-year terms unless terminated in accordance with its terms. Resolute Holdings and GPGI Holdings may each terminate the CompoSecure Management Agreement upon the occurrence of certain other limited events, and in connection with certain of these limited events, Resolute Holdings has the right to require GPGI Holdings to pay a termination fee, which may be paid in cash, shares of the Company's Class A Common Stock or a combination of cash and stock. The CompoSecure Management Agreement also provides for certain indemnification rights in Resolute Holdings’ favor, as well as certain additional covenants, representations and warranties. The CompoSecure Management Fee for the three months ended June 30, 2026 and June 30, 2025 was $4.7 and $3.4, respectively. The CompoSecure Management Fee for the six months ended June 30, 2026 was $9.2 and for the period from the date of the Spin-Off to June 30, 2025 was $4.5. GPGI Holdings did not incur any reimbursable expenses to Resolute Holdings during the three months ended June 30, 2026 and June 30, 2025, respectively. Reimbursable expenses to Resolute Holdings were approximately $0.2 and $0.1 during the six-months ended June 30, 2026 and June 30, 2025, respectively. Husky Management Agreement Pursuant to the Husky Management Agreement, Husky pays Resolute Holdings a quarterly management fee, payable in arrears, in a cash amount equal to 2.5% of Husky’s last twelve months' Adjusted EBITDA, as defined in the Husky Management Agreement. Husky is also required to reimburse Resolute Holdings and its affiliates for Resolute Holdings’ documented costs and expenses incurred on behalf of Husky other than those expenses related to Resolute Holdings’ or its affiliates’ personnel who provide services to Husky under the Husky Management Agreement. Resolute Holdings will determine, in its sole and absolute discretion, whether a cost or expense will be borne by Resolute Holdings or by Husky. The Husky Management Agreement has an initial term of 10 years and shall automatically renew for successive ten-year terms unless terminated in accordance with its terms. Resolute Holdings and Husky may each terminate the Husky Management Agreement upon the occurrence of certain other limited events, and in connection with certain of these limited events, Resolute Holdings has the right to require Husky to pay a termination fee, which may be paid in cash, shares of the Company's Class A Common Stock or a combination of cash and stock. The Husky Management Agreement also provides for certain indemnification rights in Resolute Holdings’ favor, as well as certain additional covenants, representations and warranties. The Husky Management Fee for the three and six months ended June 30, 2026 was $8.9 and $17.3, respectively. Husky did not incur any reimbursable expenses to Resolute Holdings during the three and six months ended June 30, 2026, respectively. Tax Sharing Agreement Resolute Holdings entered into a U.S. State and Local Tax Sharing Agreement (the “Tax Sharing Agreement”) with the Company that governs the respective rights, responsibilities, and obligations of the Company and Resolute Holdings after the Spin-Off with respect to certain state and local tax matters in jurisdictions and for taxable periods in which Resolute Holdings is required to file tax returns on a consolidated, combined, unitary or other group basis with the Company (the “Combined Returns”). Among other things, the Tax Sharing Agreement (i) allocates responsibility for the preparation and filing of the Combined Returns and the payment of taxes due in connection therewith, (ii) determines the appropriate allocation of any such tax liability between Resolute Holdings and the Company, (iii) requires compensation to be paid by the Company to Resolute Holdings to the extent the Company uses any tax attributes properly allocable to Resolute Holdings to offset taxes otherwise allocable to the Company and vice versa, (iv) allocates responsibility for the conduct of tax contests arising with respect to the Combined Returns, and (v) ensures that the parties are aligned on cooperating and coordinating with respect to the Combined Returns. Since the completion of the Spin-Off and through the date these consolidated financial statements are issued, the Company and Resolute Holdings have not filed Combined Returns. Letter Agreement Resolute Holdings entered into a Letter Agreement (the “Letter Agreement”) with the Company pursuant to which the Company agreed to (i) delegate by resolution of the Company's board of directors the authority to Resolute Holdings to approve issuances of the Company's equity for mergers, acquisitions and equity awards, (ii) issue the Company's equity pursuant to those delegations, (iii) make customary representations, warranties and covenants in connection with any acquisition, business combination transaction or other transaction that is intended to qualify in whole or in part as a tax-free for U.S. federal income tax purposes, and is entered into, in each case, in accordance with the Management Agreement and (iv) make filings and deliver notices in connection with the performance of Resolute Holdings’ duties and obligations under the CompoSecure Management Agreement. The Letter Agreement is coterminous with the CompoSecure Management Agreement. Contractor Agreements On February 28, 2025, upon the completion of the Spin-Off and the transfer of his employment to Resolute Holdings, we entered into a Contractor Agreement with David M. Cote, under which Mr. Cote will be eligible to receive grants of restricted stock units or other equity incentive awards as determined by the Company and will remain eligible to vest in equity incentive awards previously granted by GPGI, in exchange for his provision of certain consulting and advisory services with respect to executing strategic corporate transactions and related activities, and such other similar services as reasonably requested by the Company. We also entered into a similar Contractor Agreement with Thomas Knott and Kurt Schoen. Board Adviser Agreement On February 28, 2025 and upon the completion of the Spin-Off, Roger Fradin resigned from the Company's board of directors for personal reasons and not as a result of any disagreement with management or any matter relating to the Company’s operations, policies or practices. In connection with Mr. Fradin’s resignation, the Company entered into a Board Adviser Agreement with Fradin Consulting LLC (“Fradin Consulting”) and Resolute Holdings (the “Board Adviser Agreement”), effective as of the date of Mr. Fradin’s resignation, for a period of 12 months subject to automatic renewal for 12-month periods unless earlier terminated in accordance therewith. Pursuant to the Board Adviser Agreement, Mr. Fradin, as the representative of Fradin Consulting, provides advisory services to the Company's board of directors in exchange for which Fradin Consulting will receive an annual cash retainer fee of $0.1, payable quarterly in arrears, and Mr. Fradin, on behalf of Fradin Consulting, will be granted an annual award of options to purchase shares of the Company's common stock with a fair market value, as defined in the Amended and Restated GPGI, Inc. Non-Employee Director Compensation Policy, of $0.2. PIPE Purchase Agreements Various related parties purchased approximately 813,523 shares of Class A Common Stock in the PIPE pursuant to those PIPE Purchase Agreements at the same price per share and otherwise pursuant to the PIPE Purchase Agreements with all other PIPE investors. The PIPE Purchase Agreements provide certain shelf registration rights and include indemnification and confidentiality provisions. The Company has agreed pursuant to the PIPE Purchase Agreements to bear the expenses incurred in connection with the filing of any registration statements filed pursuant thereto. On January 12, 2026, the Company entered into an Investor Rights Agreement (the “Investor Rights Agreement”) with PE Titan CS Holdings L.P., an affiliate of Platinum Equity (the “PE Holder”). Pursuant to the Investor Rights Agreement, the PE Holder has the right to nominate (i) two members of the Board, for so long as it, together with its affiliates, continue to hold at least 10% of the outstanding shares of the Company’s Class A Common Stock, and (ii) one member of the Board so long as it, together with its affiliates, continues to hold less than 10% but more than 5% of the outstanding shares of Class A Common Stock. In addition, the Investor Rights Agreement provides that the PE Holder and its affiliates are allowed to freely pursue any business opportunity. Pursuant to the Investor Rights Agreement, the PE Holder has agreed to be subject to a lock-up period of 90 days following the closing of the Husky Transaction, subject to early release by the Company. Registration Rights Agreement In connection with the closing of the Husky Transaction, on the Husky Transaction Date, the Company entered into a Registration Rights Agreement (the “Husky Registration Rights Agreement”) with the PE Holder (collectively, with each other person who has executed and delivered a joinder thereto, the “Husky RRA Parties”) which, among other things, provides for the filing with the SEC of a shelf registration statement pursuant to Rule 415 under the Securities Act registering the resale of certain shares of the Class A Common Stock and certain other equity securities of the Company held by the Husky RRA Parties. The PE Holder is entitled to make up to two demand registrations in any 12-month period in connection with an underwritten shelf takedown offering, in each case subject to certain offering thresholds, applicable lock-up restrictions and certain other conditions. In addition, the PE Holder will have certain “piggy-back” registration rights. The Husky Registration Rights Agreement includes customary indemnification and confidentiality provisions. The Company agreed to bear the expenses incurred in connection with the filing of any registration statements filed pursuant to the terms of the Husky Registration Rights Agreement. Liquidity The Company's primary sources of liquidity are its existing cash and cash equivalents balances and funding from its wholly-owned subsidiary, GPGI Holdings. GPGI Holdings' primary sources of liquidity are its existing cash and cash equivalents balances, short term investments, cash flows from operations and borrowings on its term loan, revolving credit facility, and senior secured notes. The Company’s primary cash requirements include limited operating expenses relating primarily to public company expenses such as directors and officers insurance, professional fees, payments to taxing authorities, payments related to the tax receivable agreement, stock exchange listing fees, and transaction related expenses. The Company anticipates that its operations will continue to be funded by GPGI Holdings. Funds transferred from GPGI Holdings to the Company are treated as distributions to the Company

SUBSEQUENT EVENTS (Details) - Subsequent Event $ / shares in Units, $ in Millions	Aug. 06, 2026 USD ($) $ / shares
Subsequent Event [Line Items]
Dividends payable (in dollars per share) \| $ / shares	$ 0.0025
Class A Common Stock
Subsequent Event [Line Items]
Dividends \| $	$ 2.9

Cover Page - shares	6 Months Ended
Cover Page - shares	Jun. 30, 2026	Aug. 03, 2026
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2026
Document Transition Report	false
Entity File Number	001-39687
Entity Registrant Name	GPGI, Inc.
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	85-2749902
Entity Address, Address Line One	309 Pierce Street
Entity Address, City or Town	Somerset
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	08873
City Area Code	908
Local Phone Number	518-0500
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		289,890,082
Entity Central Index Key	0001823144
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	Q2
Amendment Flag	false
New York Stock Exchange
Document Information [Line Items]
Title of 12(b) Security	Class A Common Stock, $0.0001 par value per share
Trading Symbol	GPGI
Security Exchange Name	NYSE

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Jun. 30, 2026
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
CURRENT ASSETS
Cash and cash equivalents	$ 7.7	$ 114.6
Prepaid expenses and other current assets	3.8	5.5
Income taxes receivable	15.5	0.0
Total current assets	27.0	120.1
Deferred income tax assets	263.3	271.7
Equity method investment	3,172.1	125.5
Total assets	3,462.4	517.3
CURRENT LIABILITIES
Accounts payable	2.2	0.9
Accrued expenses	3.0	1.8
Current portion of tax receivable agreement liability	18.5	16.2
Total current liabilities	23.7	18.9
Tax receivable agreement liability	266.4	255.2
Total liabilities	290.1	274.1
Stockholders’ Equity:
Preferred stock, $0.0001 par value; 10,000,000 shares authorized; no shares issued and outstanding	0.0	0.0
Treasury stock	(12.2)	(12.2)
Additional paid-in-capital	3,821.8	706.7
Accumulated other comprehensive loss	0.0	(0.2)
Accumulated deficit	(637.3)	(451.1)
Total stockholders' equity	3,172.3	243.2
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	3,462.4	517.3
Class A Common Stock
Stockholders’ Equity:
Class A common stock, $0.0001 par value; 1,000,000,000 shares were authorized as of June 30, 2026 and December 31, 2025, and 289,889,865 and 126,985,076 shares issued and outstanding as of June 30, 2026 and December 31, 2025, respectively	$ 0.0	$ 0.0

INCOME TAXES	6 Months Ended
INCOME TAXES	Jun. 30, 2026
Income Tax Disclosure [Abstract]
INCOME TAXES	6. INCOME TAXES The Company recorded income tax provision of $(1.2) for the three months ended June 30, 2026 and income tax benefit of $1.8 for the three months ended June 30, 2025. The Company recorded income tax provision of $4.8 and $25.2 for the six months ended June 30, 2026 and June 30, 2025, respectively. In calculating the provision for income taxes on an interim basis, the Company uses an estimate of the annual effective tax rate based upon currently known facts and circumstances and applies that rate to its year-to-date earnings or losses. The Company’s estimated annual effective tax rate is based on expected income and statutory tax rates and takes into consideration permanent differences between financial statement and tax return income applicable to the Company in the various jurisdictions in which the Company operates. The effect of discrete items, such as changes in estimates, changes in enacted tax laws or rates or tax status, and unusual or infrequently occurring events, is recognized in the interim period in which the discrete item occurs. The accounting estimates used to compute the provision for income taxes may change as new events occur, additional information is obtained or as the result of new judicial interpretations or regulatory or tax law changes. The Company's effective tax rate was (7.7)% and 2.7% for the three months ended June 30, 2026, and June 30, 2025, respectively. The Company's effective tax rate was (5.2)% and (76.1)% for the six months ended June 30, 2026, and June 30, 2025, respectively. The Company’s overall effective tax rate differs from the U.S. statutory rate primarily due to pass-through income which flows to the Company from its domestic subsidiaries, non-deductible expenses and the revaluation of the deferred tax balance as a result of the Husky Transaction.

STOCK-BASED COMPENSATION - Value of the Options Granted (Details) - Stock option expense	6 Months Ended
	Jun. 30, 2026 $ / shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expected term	6 years 3 months
Volatility	30.49%
Risk-free rate	3.74%
Expected dividend yield	0.04%
Weighted average grant date fair value	$ 8.22

EQUITY STRUCTURE	6 Months Ended
EQUITY STRUCTURE	Jun. 30, 2026
Equity [Abstract]
EQUITY STRUCTURE	4. EQUITY STRUCTURE Shares Authorized In May 2025, the Company filed a Third Amended and Restated Certificate of Incorporation in the State of Delaware to (i) increase the authorized number of shares of the Company’s Class A Common Stock from 250,000,000 shares to 1,000,000,000 shares, and (ii) eliminate obsolete provisions, including those related to the Company’s now-eliminated dual-class structure. On June 5, 2026, the Company completed its reincorporation from Delaware to Nevada. As part of the reincorporation, each outstanding share of Class A Common Stock, par value $0.0001 per share, of the Delaware corporation automatically converted into one outstanding share of Class A common stock, par value $0.0001 per share, of the Nevada corporation, and each outstanding grant or equity award covering the right to purchase shares and other rights to acquire shares of Class A common stock of the Delaware corporation as provided for in the applicable equity plan of the Company continued in existence and automatically became an award representing the right to acquire an equal number of shares of Class A common stock of the Nevada corporation under the same terms and conditions. The shares of the Company's Class A Common Stock continue to be traded on the New York Stock Exchange under the symbol “GPGI”. The reincorporation did not otherwise change the Company's authorized capital structure. Issuance of Common Stock During the three and six months ended June 30, 2026, the Company issued 28,420 and 1,870,372, respectively, of new shares of Class A Common Stock primarily related to the vesting of certain restricted stock units ("RSUs"), performance stock units ("PSUs") and exercises of stock options. The Class A Common Stock issued pursuant to the vesting of RSUs, PSUs and options were issued net of shares withheld for applicable taxes. In connection with the closing of the Husky Transaction on the Husky Transaction Date, the Company issued 54,978,334 shares of Class A Common Stock to GPGI Holdings which in turn issued the equivalent shares to Platinum Equity as partial consideration for the transaction. Concurrently, the Company completed a private investment in public equity (“PIPE”) financing and issued 106,056,083 shares of Class A Common Stock to PIPE investors pursuant to stock purchase agreements (the "PIPE Purchase Agreements"). Warrants Pursuant to the terms of the warrant agreement, dated as of November 20, 2020, by and between the Company and Continental Stock Transfer & Trust Company (the "Warrant Agreement") governing the Company's previously-outstanding redeemable warrants (the "Warrants"), on November 3, 2025, the Company issued a Notice of Redemption calling for the redemption of all outstanding public Warrants, establishing a redemption date of December 3, 2025 (the "Redemption Date"). In connection with the redemption, the Company required holders who wished to exercise their Warrants to do so on a cashless basis. Any Warrants not exercised by 5:00 p.m. New York City time on the Redemption Date, were canceled, and holders of such unexercised Warrants were entitled only to receive the $0.01 per Warrant redemption price upon surrender of their Warrants. Following the Redemption Date, all rights associated with the Warrants, including the right to acquire shares of Class A Common Stock underlying such Warrants, ceased. As a result, there were zero Warrants outstanding both as of June 30, 2026 and December 31, 2025. Dividend and Distribution During the three and six months ended June 30, 2026, cash dividends of $0.8 and $1.5, respectively, were declared by the Company's board of directors (the "Board") and paid by the Company. Treasury Stock The Company maintains a share repurchase program authorizing repurchases of up to $100.0 of the Company's Class A Common Stock. As of June 30, 2026, approximately $87.8 remained available for repurchase under the program. During the six months ended June 30, 2026, the Company did not repurchase any shares of its Class A Common Stock. During the year ended December 31, 2025, the Company repurchased 647,782 shares of Class A Common Stock through open market transactions which are classified as treasury stock on the condensed consolidated balance sheets.

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Cash flows from operating activities
Net income (loss)	$ (184,700,000)	$ (4,600,000)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities
Depreciation and amortization	0	1,600,000
Stock-based compensation expense	5,300,000	4,000,000.0
(Earnings) losses in equity method investment	87,000,000.0	(53,700,000)
Distributions from GPGI Holdings	20,100,000	15,900,000
Loss on remeasurement of tax receivable agreement liability	28,100,000	0
Revaluation of earnout consideration liability	0	(500,000)
Revaluation of warrant liability	0	35,600,000
Non-cash operating lease expense	0	400,000
Deferred tax expense (benefit)	8,600,000	(1,800,000)
Changes in assets and liabilities
Accounts receivable	0	2,100,000
Inventories	0	(5,200,000)
Income taxes receivable	(12,600,000)	0
Prepaid expenses and other assets	1,700,000	300,000
Accounts payable	1,300,000	1,100,000
Accrued expenses	1,200,000	12,000,000.0
Lease liabilities	0	(400,000)
Other liabilities	0	(3,800,000)
Net cash provided by (used in) operating activities	(44,000,000.0)	3,000,000.0
Cash flows from investing activities
Investments in GPGI Holdings	(2,120,400,000)	0
Distributions from GPGI Holdings	111,600,000	0
GPGI Holdings cash deconsolidated as a result of the CompoSecure Management Agreement	0	(50,300,000)
Resolute Holdings cash deconsolidated as a result of the Spin-Off	0	(10,000,000.0)
Capitalized software expenditures	0	(400,000)
Net cash provided by (used in) investing activities	(2,008,800,000)	(60,700,000)
Cash flows from financing activities
Proceeds from issuance of Class A common stock in relation to Husky Transaction	1,962,000,000	0
Proceeds from employee stock purchase plan and exercise of options	0	100,000
Payments for taxes related to net share settlement of equity awards	0	(15,300,000)
Payment of tax receivable agreement liability	(14,600,000)	(4,700,000)
Dividends to Class A shareholders	(1,500,000)	0
Proceeds from the exercise of warrants	0	4,900,000
Net cash provided by (used in) financing activities	1,945,900,000	(15,000,000.0)
Net increase (decrease) in cash and cash equivalent	(106,900,000)	(72,700,000)
Cash and cash equivalent, beginning of period	114,600,000	77,500,000
Cash and cash equivalent, end of period	7,700,000	4,800,000
Supplemental disclosure of cash flow information
Cash paid for interest	0	2,200,000
Cash paid for income taxes	7,000,000.0	11,500,000
Supplemental disclosure of non-cash operating and financing activities
Distribution from GPGI Holdings for non-cash interest carryforward (per section 163j)	2,900,000	0
Operating lease right of use assets exchanged for lease liabilities	0	4,200,000
Derivative asset - interest rate swap	0	(500,000)
Non-cash portion of warrant exercise	0	(2,300,000)
Investment in GPGI Holdings for stock-based compensation	4,800,000	6,800,000
GPGI Holdings net liabilities, excluding cash and cash equivalents, deconsolidated as a result of CompoSecure Management Agreement	0	(98,500,000)
Resolute Holdings net liabilities, excluding cash and cash equivalents, deconsolidated as a result of Spin-Off	0	(1,500,000)
GPGI, Inc. Class A common stock issued to GPGI Holdings in relation to Husky Transaction	$ 1,143,000,000	$ 0

Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Millions	Total	GPGI Holdings	Husky Holdings	Resolute Holdings	Treasury Stock	Additional Paid in Capital	Additional Paid in Capital GPGI Holdings	Additional Paid in Capital Husky Holdings	Additional Paid in Capital Resolute Holdings	Accumulated Other Comprehensive Loss	Accumulated Deficit	Accumulated Deficit Resolute Holdings	Class A Common Stock	Class A Common Stock Class A Common Stock	Class A Common Stock Class A Common Stock Husky Holdings
Beginning balance (in shares) at Dec. 31, 2024														100,462,844
Beginning balance at Dec. 31, 2024	$ (143.5)				$ 0.0	$ 361.4				$ 2.5	$ (507.4)			$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of warrants (in shares)														425,100
Exercise of warrants	7.2					7.2
Stock-based compensation	3.9	$ 1.8				3.9	$ 1.8
Proceeds from employee stock purchase plan and exercise of options	0.1					0.1
Net income (loss)	21.5										21.5
Class A common stock issued pursuant to equity-based plans, net of shares withheld for taxes (in shares)														2,422,877
Payments of taxes related to net settlement of equity awards (in shares)														(992,969)
Payments of taxes related to net settlement of equity awards	(15.3)					(15.3)
Unrealized loss on derivative - interest rate swap	(0.5)									(0.5)
Spin-Off of Resolute Holdings				$ (10.8)					$ (14.2)			$ 3.4
Deconsolidation of GPGI Holdings (f/k/a CompoSecure Holdings, L.L.C.)	48.3					(138.4)				(2.2)	188.9
Ending balance (in shares) at Mar. 31, 2025														102,317,852
Ending balance at Mar. 31, 2025	(87.3)				0.0	206.5				(0.2)	(293.6)			$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of warrants (in shares)														1,000
Stock-based compensation	0.1	5.0				0.1	5.0
Net income (loss)	(26.1)										(26.1)
Class A common stock issued pursuant to equity-based plans, net of shares withheld for taxes (in shares)														38,880
Spin-Off of Resolute Holdings				1.9					1.9
Ending balance (in shares) at Jun. 30, 2025														102,357,732
Ending balance at Jun. 30, 2025	(106.4)				0.0	213.5				(0.2)	(319.7)			$ 0.0
Beginning balance (in shares) at Dec. 31, 2025														126,985,076
Beginning balance at Dec. 31, 2025	243.2				(12.2)	706.7				(0.2)	(451.1)			$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	2.0	1.8		0.2		2.0	1.8		0.2
Net income (loss)	(235.0)										(235.0)
Class A common stock issued pursuant to equity-based plans, net of shares withheld for taxes (in shares)														1,841,952
Class A common stock issued in relation to Husky Transaction (in shares)															161,034,417
Class A common stock issued in relation to Husky Transaction			$ 3,105.0					$ 3,105.0
Deemed dividend for stock-based compensation to Resolute Holdings employees				$ (0.2)					$ (0.2)
Dividends declared	(0.7)										(0.7)
Ending balance (in shares) at Mar. 31, 2026														289,861,445
Ending balance at Mar. 31, 2026	3,116.3				(12.2)	3,815.5				(0.2)	(686.8)			$ 0.0
Beginning balance (in shares) at Dec. 31, 2025														126,985,076
Beginning balance at Dec. 31, 2025	243.2				(12.2)	706.7				(0.2)	(451.1)			$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Class A common stock issued pursuant to equity-based plans, net of shares withheld for taxes (in shares)													1,870,372
Ending balance (in shares) at Jun. 30, 2026														289,889,865
Ending balance at Jun. 30, 2026	3,172.3				(12.2)	3,821.8				0.0	(637.3)			$ 0.0
Beginning balance (in shares) at Mar. 31, 2026														289,861,445
Beginning balance at Mar. 31, 2026	3,116.3				(12.2)	3,815.5				(0.2)	(686.8)			$ 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	3.3	$ 3.0				3.3	$ 3.0
Net income (loss)	50.3										50.3
Class A common stock issued pursuant to equity-based plans, net of shares withheld for taxes (in shares)													28,420	28,420
Dividends declared	(0.8)										(0.8)
Other	0.2									0.2
Ending balance (in shares) at Jun. 30, 2026														289,889,865
Ending balance at Jun. 30, 2026	$ 3,172.3				$ (12.2)	$ 3,821.8				$ 0.0	$ (637.3)			$ 0.0

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2026	Dec. 31, 2025
Statement [Line Items]
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Class A Common Stock
Statement [Line Items]
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	289,889,865	126,985,076
Common stock, shares outstanding (in shares)	289,889,865	126,985,076

DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS (Details) $ / shares in Units, $ in Millions	Jan. 12, 2026 segment	Nov. 02, 2025 USD ($)	Feb. 28, 2025 segment	Sep. 17, 2024 USD ($) $ / shares shares	Aug. 07, 2024 segment $ / shares shares	Jun. 30, 2026 business
Class of Stock [Line Items]
Number of operating segments \| segment	2		1		1
Number of market leading businesses \| business						2
Sale of stock, number of shares exchanged in transaction (in shares) \| shares					51,908,422
Common stock, par value (in dollars per share) \| $ / shares					$ 0.0001
Sale of stock, conversion ratio			0.0833
Management fee percentage						2.50%
Husky Holdings
Class of Stock [Line Items]
Consideration transferred \| $		$ 4,976.0
Tungsten 2024, LLC
Class of Stock [Line Items]
Shares issued in public offering (in shares) \| shares				49,290,409
Consideration received on transaction \| $				$ 372.0
Sale of stock (in dollars per share) \| $ / shares				$ 7.55
Tungsten 2024, LLC \| CompoSecure Holdings, L.L.C
Class of Stock [Line Items]
Percentage of ownership acquired				60.00%

SUBSEQUENT EVENTS	6 Months Ended
SUBSEQUENT EVENTS	Jun. 30, 2026
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	11. SUBSEQUENT EVENTS On August 6, 2026, the Company announced that its board of directors declared a quarterly cash dividend of $0.0025 per share on the Class A Common Stock. The dividend represents an annualized distribution of approximately $2.9.

EQUITY METHOD INVESTMENT - Narrative (Details) - USD ($)	Jun. 30, 2026	Feb. 28, 2026	Dec. 31, 2025	Feb. 28, 2025
Debt Securities, Available-for-Sale [Line Items]
Equity method investment	$ 3,172,100,000		$ 125,500,000
Liabilities	$ 290,100,000		274,100,000
GPGI Holdings
Debt Securities, Available-for-Sale [Line Items]
Liabilities				$ 50,100,000
GPGI Holdings
Debt Securities, Available-for-Sale [Line Items]
Ownership percentage	100.00%
Equity method investment	$ 3,172,100,000		$ 125,500,000
CompoSecure Holdings, L.L.C
Debt Securities, Available-for-Sale [Line Items]
Equity method investment		$ 0.0

STOCK-BASED COMPENSATION - RSU Activity Under the Equity Plan (Details) - Restricted stock unit expense	6 Months Ended
	Jun. 30, 2026 shares
Number of Shares
Nonvested, beginning balance (in shares)	5,931,940
Granted (in shares)	1,803,841
Vested (in shares)	(2,528,410)
Forfeited (in shares)	(938,898)
Nonvested, ending balance (in shares)	4,268,473