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Nature of Business and Summary of Significant Accounting Policies (Policies)
6 Months Ended
Jun. 30, 2026
Accounting Policies [Abstract]  
Nature of Business
Nature of Business

Mirion Technologies, Inc. (“Mirion,” the “Company,” “we,” “our,” or “us” and formerly GS Acquisition Holdings Corp II (“GSAH”)) is a global provider of radiation detection, measurement, analysis, and monitoring products and services to the medical, nuclear, and defense end markets. On October 20, 2021, Mirion Technologies, Inc. was formed when it consummated its business combination with GSAH.

We provide products and services through our two operating and reportable segments; (i) Nuclear & Safety and (ii) Medical. The Nuclear & Safety segment provides robust, field ready personal radiation detection and identification equipment for defense applications and radiation detection and analysis tools for power plants, labs, and research applications. Nuclear power plant product offerings are used for the full nuclear power plant lifecycle including core detectors and essential measurement devices for new build, maintenance, decontamination and decommission equipment for monitoring and control during fuel dismantling and remote environmental monitoring. The Medical segment provides radiation oncology quality assurance, delivering patient safety solutions for diagnostic imaging and radiation therapy centers around the world, dosimetry solutions for monitoring the total amount of radiation medical staff members are exposed to over time, radiation therapy quality assurance solutions for calibrating and verifying imaging and treatment accuracy, and radionuclide therapy products for nuclear medicine applications such as shielding, product handling, and medical imaging furniture.
The Company is headquartered in Atlanta, Georgia and has operations in the United States, Canada, the United Kingdom, France, Germany, Finland, China, Belgium, the Netherlands, Estonia, Japan, and South Korea.
Basis of Presentation and Principles of Consolidation
Basis of Presentation and Principles of Consolidation

The accompanying unaudited Condensed Consolidated Financial Statements and Notes to Condensed Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for financial statements and pursuant to the accounting and disclosure rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”) for interim financial information. The interim unaudited Condensed Consolidated Financial Statements reflect all adjustments that are of a normal recurring nature and that are considered necessary for a fair representation of the results for the periods presented and should be read in conjunction with the audited Consolidated Financial Statements and notes thereto for the period ended December 31, 2025, which include a complete set of footnote disclosures, including our significant accounting policies included in our Annual Report on Form 10-K. The results for interim periods are not necessarily indicative of the results that may be expected for a full fiscal year or for any other future period. The unaudited Condensed Consolidated Financial Statements include the accounts of the Company and its wholly owned and majority-owned or controlled subsidiaries. For consolidated subsidiaries where our ownership is less than 100%, the portion of the net income or loss allocated to noncontrolling interests is reported as “Income attributable to noncontrolling interests” in the unaudited Condensed Consolidated Statements of Operations. All intercompany accounts and transactions have been eliminated in consolidation.
The Company recognizes a noncontrolling interest for the portion of Class B common stock of Mirion IntermediateCo, Inc., a Delaware corporation and direct subsidiary of the Company (“IntermediateCo”) that is not attributable to the Company.
Segments
Segments
The Company manages its operations through two operating and reportable segments: Nuclear & Safety and Medical. These segments align the Company’s products and service offerings with customer use in medical and industrial markets and are consistent with how the Company’s Chief Executive Officer, its Chief Operating Decision Maker (“CODM”), reviews and evaluates the Company’s operations. The CODM allocates resources and evaluates the financial performance of each operating segment. The Company’s segments are strategic businesses that are managed separately because each one develops, manufactures and markets distinct products and services. Refer to Note 15, Segment Information, for further detail.
Use of Estimates
Use of Estimates
Management estimates and judgments are an integral part of financial statements prepared in accordance with GAAP. We believe that the critical accounting policies listed below address the more significant estimates required of management when preparing our consolidated financial statements in accordance with GAAP. We consider an accounting estimate critical if changes in the estimate may have a material impact on our financial condition or results of operations. We believe that the accounting estimates employed are appropriate and resulting balances are reasonable; however, actual results could differ from the original estimates, requiring adjustment to these balances in future periods. The accounting policies that reflect our more significant estimates, judgments and assumptions and which we believe are the most critical to aid in fully understanding and evaluating our reported financial results include but are not limited to: goodwill and intangible assets; estimated progress toward completion for certain revenue contracts; uncertain tax positions and tax valuation allowances.
Accounts Receivable and Allowance for Doubtful Accounts
Accounts Receivable and Allowance for Doubtful Accounts
The allowance for doubtful accounts is based on the Company’s assessment of the collectability of customer accounts.
Prepaid Expenses and Other Current Assets
Prepaid Expenses and Other Current Assets
Prepaid expenses and other current assets are primarily comprised of various prepaid assets including prepaid insurance, short-term marketable securities, and income tax receivables.
Facility and Equipment Decommissioning Liabilities
Facility and Equipment Decommissioning Liabilities
The Company has asset retirement obligations (“ARO”) consisting primarily of equipment and facility decommissioning costs. ARO liabilities totaled $2.9 million for the periods ended June 30, 2026 and December 31, 2025, and were included in other liabilities on the unaudited Condensed Consolidated Balance Sheets. Accretion expense related to these liabilities was not material for any periods presented.
Revenue Recognition
Revenue Recognition
The Company recognizes revenue from arrangements that include performance obligations to design, engineer, manufacture, deliver, and install products. If a performance obligation does not qualify for over-time revenue recognition, revenue is then recognized at the point-in-time in which control of the distinct good or service is transferred to the customer, typically based upon the terms of delivery.
Revenue derived from passive dosimetry and analytical services is of a subscription nature and is provided to customers on an agreed-upon recurring monthly, quarterly or annual basis. Revenue is recognized ratably over the service period as the service is continuous, and no other discernible pattern of recognition is evident.
Contract Balances
Revenue earned in excess of billings on contracts in progress (contract assets) are classified in the unaudited Condensed Consolidated Balance Sheets in costs in excess of billings on uncompleted contracts. Amounts billed in excess of revenue earned (contract liabilities) are included in deferred contract revenue. Our billing terms for these over-time contracts are generally based on achieving specified milestones. The differences between the timing of our revenue recognized (based on costs incurred) and customer billings (based on contractual terms) results in changes to our contract asset or contract liability positions.

Milestone billing is aligned to the timing of the associated performance of the Company at the contract onset and generally occurs multiple times in a given twelve-month period. Unexpected project delays could impact the contract asset or liability position during the course of a contract. Contract asset balances are reviewed by management for future credit losses by considering factors such as historical experience, the customers' financial condition and current economic conditions. In circumstances where the Company is aware of a specific customer's inability to meet its financial and contractual obligations, a specific reserve is recorded against the contract asset. As of June 30, 2026, one project accounts for more than 10% of the contract asset balance (11%). For more information, see Note 3, Contracts in Progress.
Remaining Performance Obligations
The remaining performance obligations for all open contracts as of June 30, 2026 include assembly, delivery, installation, and trainings.
Treasury Stock
Treasury Stock
We account for treasury stock under the cost method pursuant to the provisions of ASC 505-30, "Treasury Stock". Under the cost method, the gross cost of the shares reacquired is charged to a contra equity account, treasury stock. The equity accounts that were originally credited for the original share issuance, common stock and additional paid-in capital, remain intact.
When treasury shares are reissued at a price higher than cost, the difference is recorded as a component of additional paid-in capital in the unaudited Condensed Consolidated Balance Sheets. When treasury stock is re-issued at a price lower than its cost, the difference is recorded as a component of additional paid-in capital to the extent that previously recorded gains exist to offset the losses. If there are no treasury stock gains in additional paid-in-capital, the losses upon re-issuance of treasury stock are recorded as a reduction of retained earnings in the unaudited Condensed Consolidated Balance Sheets. Treasury stock is reissued on a FIFO cost flow basis to compute excesses and deficiencies upon subsequent share reissuance.
Concentrations of Risk
Concentrations of Risk
Financial instruments that are potentially subject to concentration of credit risk consist primarily of cash, cash equivalents, and accounts receivable. The Company maintains cash in bank deposit accounts that, at times, may exceed the insured limits of the local country. The Company has not experienced any losses in such accounts.
The Company sells its products and services mainly to large, private and governmental organizations in the Americas, Europe, the Middle East and Asia Pacific regions. The Company performs ongoing evaluations of its customers’ financial condition and limits the amount of credit extended when deemed necessary. The Company generally does not require its customers to provide collateral or other security to support accounts receivable.
Recent Accounting Pronouncements
Recent Accounting Pronouncements
Accounting Guidance Issued but not yet Adopted
In October 2023, the FASB issued ASU 2023-06, “Disclosure Improvements.” ASU 2023-06 clarifies or improves disclosure and presentation requirements of a variety of topics. For entities subject to the SEC’s existing disclosure requirements, the effective date for each amendment will be the date on which the SEC’s removal of that related disclosure from Regulation S-X or Regulation S-K becomes effective, with early adoption prohibited. For all entities, if by June 30, 2027, the SEC has not removed the applicable requirement from Regulation S-X or Regulation S-K, the pending content of the related amendment will be removed from the codification and will not become effective for any entity. The Company is currently evaluating the impact of this ASU.

In November 2024, the FASB issued ASU 2024-03, “Income Statement—Reporting Comprehensive
Income—Expense Disaggregation Disclosures.” The ASU will improve the decision usefulness for investors by requiring public business entities to disclose more detailed information about their expenses such as (a) inventory and manufacturing expense, (b) employee compensation, (c) depreciation, (d) intangible asset amortization, etc. The amendments will be effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. The amendments will be applied prospectively with an option for a retrospective application. The Company is evaluating the impact of this new standard and believes that the adoption will result in additional disclosures, but does not expect it to have any other impact on its consolidated financial statements
In September 2025, the FASB issued ASU 2025-06, “Intangibles—Goodwill and Other—Internal-Use Software.” ASU 2025-06 amends certain aspects of the accounting for and disclosure of software costs under ASC 350-40. The ASU makes targeted improvements to capitalization of costs for software developed or obtained for internal use. The amendment is expected to simplify the analysis for internal-use software cost capitalization, as entities no longer will be required to align capitalization to project stages that are not applicable to an agile development environment. The amendments will be effective for fiscal years beginning after December 15, 2027, in addition to the interim periods within those annual reporting periods, with early adoption permitted at the beginning of a reporting period. The Company is currently evaluating the impact of this ASU and plans to early adopt with prospective application beginning in fiscal year 2027.
Business Combinations, Acquisitions, and Business Disposals Business Combinations, Acquisitions, and Business Disposals
All acquisitions are accounted for under the acquisition method of accounting, and the related assets acquired and liabilities assumed are recorded at fair value. The Company makes an initial allocation of the purchase price at the date of acquisition based upon its understanding of the fair value of the acquired assets and assumed liabilities. The Company obtains the information used for the purchase price allocation during due diligence and through other sources. In the months after closing, as the Company obtains additional information about the acquired assets and liabilities, including through tangible and intangible asset appraisals, and learns more about the newly acquired business, it is able to refine the estimates of fair value and more accurately allocate the purchase price. The fair values of acquired intangibles are determined based on estimates and assumptions that are deemed reasonable by the Company. Significant assumptions include the discount rates
and certain assumptions that form the basis of the forecasted results of the acquired business including revenue, earnings before interest, taxes, depreciation and amortization (“EBITDA”), and growth rates. These assumptions are forward looking and could be affected by future economic and market conditions. Only facts and circumstances that existed as of the acquisition date are considered for subsequent adjustment. The Company will make appropriate adjustments to the purchase price allocation prior to completion of the measurement period, as required.

Purchases of acquired businesses resulted in the recognition of goodwill in the Company’s Consolidated Financial Statements, which is calculated as the excess of the consideration transferred over the net assets recognized and represents the future economic benefits arising from the other assets acquired that could not be individually identified and separately recognized. The goodwill is not amortized but some portion may be deductible for income tax purposes. This goodwill recorded includes the following:

The expected synergies and other benefits that we believe will result from combining the operations of the acquired business with the operations of Mirion;
Any intangible assets that did not qualify for separate recognition, as well as future, yet unidentified projects and products;
The value of the existing business as an assembled collection of net assets versus if the Company had acquired all of the net assets separately.
Fair Value Measurements
The Company applies fair value accounting to all financial assets and liabilities that are recognized or disclosed at fair value in the consolidated financial statements on a recurring basis. The fair value of the Company’s cash and cash equivalents, restricted cash, accounts receivable, and other current assets and liabilities approximates their carrying amounts due to the relatively short maturity of these items. The fair value of debt approximates the carrying value because the interest rates are variable and reflect market rates.