Summary of Significant Accounting Policies (Policies)	12 Months Ended
Dec. 31, 2023
Accounting Policies [Abstract]
Basis of Presentation	The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The accompanying consolidated financial statements include the accounts of System1, Inc. and its subsidiaries for the Successor periods, and S1 Holdco for the Predecessor period. All intercompany accounts and transactions have been eliminated in the consolidation of the financial statements.
Principles of Consolidation	The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The accompanying consolidated financial statements include the accounts of System1, Inc. and its subsidiaries for the Successor periods, and S1 Holdco for the Predecessor period. All intercompany accounts and transactions have been eliminated in the consolidation of the financial statements.
Use of Estimates	Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Management’s estimates are based on historical information available as of the date of the consolidated financial statements and various other assumptions that we believe are reasonable under the circumstances. Actual results could differ from those estimates. Significant estimates and assumptions reflected in these consolidated financial statements include, but are not limited to, valuation of goodwill, acquired intangible assets, assets held for sale and long-lived assets, valuation and recognition of stock-based compensation awards, income taxes, contingent consideration and determination of the fair value of the warrant liabilities. On an ongoing basis, management evaluates our estimates compared to historical experience and trends, which form the basis for making judgments about the carrying value of assets and liabilities.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents consist of amounts held as bank deposits. Cash is deposited with high-credit-quality financial institutions and, at times, such balances with any one financial institution may exceed the insurance limits of the prevailing regulatory body. Historically, we have not experienced any losses related to these cash balances and we believe that there is minimal risk of expected future losses. However, there can be no assurance that there will not be losses on these deposits.
Accounts Receivable, Net	Accounts Receivable, Net We maintain an allowance for doubtful accounts receivable for expected credit losses. In estimating the required allowance, we take into consideration the overall quality and aging of the receivable portfolio, creditworthiness of customers based on ongoing credit evaluation, the number of customers, specifically identified customer risks, historical write-off experience and the current economic environment, reasonable and supportable forecasts of future economic conditions, and other factors that may affect our ability to collect from customers. The payment term for our accounts receivable is typically 30 days.
Foreign Currency	Foreign Currency The functional currency of our wholly-owned subsidiaries is the currency of the primary economic environment in which they operate. Assets and liabilities are translated into U.S. dollars using exchange rates prevailing at the balance sheet date, while revenue and expenses are translated at average exchange rates during the year. Gains and losses resulting from the translation of our consolidated balance sheets are recorded as a component of accumulated other comprehensive (loss) income. Foreign currency transaction gains and losses are recorded in other income (expense), net on our consolidated statement of operations.
Warrant Liability	Warrant Liability We account for the Public Warrants and Private Placement Warrants (collectively “Warrants”), as liabilities measured at fair value each balance sheet date, with changes in fair value recorded in Change in fair value of warrant liabilities in the consolidated statements of operations. Refer to Note 13, Warrants and Note 14, Fair Value Measurement.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair value is the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. We measure fair value based on a three-level hierarchy of inputs, maximizing the use of observable inputs, where available, and minimizing the use of unobservable inputs when measuring fair value. A financial instrument’s level within the three-level hierarchy is based on the lowest level of input that is significant to the fair value measurement. The three-level hierarchy of inputs is as follows: Level 1: Observable inputs such as unadjusted, quoted prices in active markets for identical assets or liabilities at the measurement date; Level 2: Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities; and Level 3: Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. These inputs are based on our own assumptions about current market conditions and require significant management judgment or estimation. Financial instruments consist of cash, cash equivalents, restricted cash, accounts receivable, accounts payable, accrued liabilities, and warrant liabilities. Cash equivalents and restricted cash are stated at fair value on a recurring basis. Accounts receivable, accounts payable and accrued liabilities are stated at their carrying value, which approximates fair value due to the short time to the expected receipt or payment date. As of December 31, 2023 and 2022 (Successor), our outstanding debt included a Term Loan, for which fair value was estimated using an observable market quotation (Level 2). Our liabilities measured at fair value relate to the Public Warrant liabilities (Level 1), Private Placement Warrant liabilities (Level 2), the former CEO of S1 Holdco's equity profits interest liability (Level 3) and contingent consideration (Level 3). Certain assets, including goodwill, intangible assets, assets held for sale and other long-lived assets, are also subject to measurement at fair value on a nonrecurring basis if they are deemed to be impaired as a result of an impairment review. We determine the fair value by applying Level 3 unobservable inputs.
Restricted Cash	Restricted Cash Our restricted cash as of December 31, 2023 (Successor) and December 31, 2022 (Successor) primarily related to; (i) cash collateralized letter of credit we maintain in connection with our corporate office lease, (ii) escrow account related to unvested equity awards as of the closing of the Merger that will be cash settled, (iii) escrow account related to the indemnification of obligations related to the RoadWarrior acquisition and (iv) escrow account related to the postcombination compensation arrangement related to the CouponFollow acquisition.
Property and Equipment, Net	Property and Equipment, Net Property and equipment are stated at cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets. Repairs and maintenance are charged to expense as incurred, while improvements are capitalized. Upon the sale or retirement of property and equipment, the accounts are relieved of the cost and the related accumulated depreciation, and any resulting gain or loss is included in selling, general, and administrative expense on the consolidated statements of operations.
Internal-Use Software Development Costs, Net	Internal-Use Software Development Costs, Net Internal-use software development costs are stated at cost, less accumulated amortization. We capitalize certain internal-use software development costs associated with creating and enhancing internally developed software related to our technology infrastructure, including continuing to develop and deploy our RAMP platform. Deployment activities focus on enhancement of our customer acquisition capabilities, including website enhancements and tools for marketing support, and upgrades of dashboards and reporting tools. These costs are comprised of personnel costs, which include salaries, bonuses, stock-based compensation and employee benefits’ expenses for employees who are directly associated with, and who devote significant time to, software projects, as well as external direct costs of materials and services consumed in developing or obtaining the software. Internal-use software development costs that do not meet the qualification for capitalization are expensed as incurred, and are recorded in salaries and benefits expense on the consolidated statement of operations. Internal-use software development activities generally consist of three stages: (i) the planning stage, (ii) the application and infrastructure development stage, and (iii) the post-implementation stage. Costs incurred in the planning and post-implementation stages of software development, including costs associated with the post configuration training and repairs and maintenance of the developed technologies, are expensed as incurred. Costs incurred in the application and infrastructure development stage, including significant enhancements and upgrades, are capitalized once the preliminary project stage is completed, management has authorized further funding for the completion of the project, and it is probable that the project will be completed and the software will perform as intended. Capitalization ends once a project is substantially complete, and the software and technologies are ready for their intended purpose(s). Internal-use software development costs are amortized using a straight-line method over an estimated useful life of three years, commencing when the software is ready for our intended use, which approximates the period over which the expected benefits will be derived. We do not transfer ownership of or software or lease our software to third parties. Intangible Assets Intangible assets primarily consist of acquired technology, customer relationships and trade names/trademarks. We determine the appropriate useful life based on management’s estimate of the applicable intangible asset’s remaining economic useful life at the time of acquisition. Intangible assets are generally amortized over their estimated economic useful lives using a straight-line method, which approximates the pattern in which the economic benefits are consumed. The fair value of the intangible assets acquired in a business combination are determined as follows; (i) trademarks using the relief from royalty method under the income-based approach. Key assumptions include forecasted revenue, an estimated royalty rate applicable to the trademarks, and a discount rate; (ii) customer relationships using an excess-earnings method utilizing distributor inputs. Key assumptions include customer attrition rate, revenue growth rate, existing customer revenue, deferred revenue, and a discount rate; and (iii) technology using the excess-earnings method. Key assumptions include forecasted revenue, technology migration rate and a discount rate.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets We assess the recoverability of our long-lived assets when events or changes in circumstances indicate that their carrying value may not be recoverable. Such events or changes in circumstances may include a significant adverse change in the extent or manner in which a long-lived asset is being used; significant adverse changes in legal factors or in the business climate that could affect the value of a long-lived asset; an accumulation of costs significantly in excess of the amount originally expected for the acquisition or development of a long-lived asset; current or future operating or cash flow losses that demonstrate continuing losses associated with the use of a long-lived asset; or a current expectation that, more likely than not, a long-lived asset will be sold or otherwise disposed of significantly before the end of our previously estimated useful life. We perform impairment testing at the asset group level that represents the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. We assess recoverability of our long-lived assets by determining whether the carrying value of the asset group can be recovered through projected undiscounted cash flows over their remaining useful lives inclusive of an estimated residual value. If the carrying value of the asset group exceeds the forecasted undiscounted cash flows, an impairment loss is recognized and measured as the amount by which the carrying amount exceeds the estimated fair value. An impairment loss is charged to operations in the period in which management determines such impairment has occurred. Refer to Note 6, Goodwill, Internal-Use Software Development Costs, Net, and Intangible Assets, Net.
Assets and Liabilities Held for Sale	Assets and Liabilities Held for Sale We report a business as held for sale when management has received approval to sell the business and is committed to a formal plan, the business is available for immediate sale, the business is being actively marketed, the sale is anticipated to occur during the ensuing year and certain other specified criteria are met. A business classified as held for sale is recorded at the lower of its carrying amount or estimated fair value less costs to sell, which is required to be remeasured each reporting period. If the carrying amount of the business exceeds its estimated fair value, which is based on the estimated sales price of the transaction, less costs to sell, a loss is recognized. Depreciation and amortization is not recorded on assets of a business classified as held for sale. Refer to Note 19, Discontinued Operations.
Discontinued Operations	Discontinued Operations We present discontinued operations when there is a disposal of a component or a group of components that represents a strategic shift that will have a major effect on operations and financial results. The results of discontinued operations are reported in net income from discontinued operations in the consolidated statements of operations for all periods presented, commencing in the period in which the business is either disposed of or is classified as held for sale, including any gain or loss recognized on closing or adjustment of the carrying amount to fair value less costs to sell. Assets and liabilities related to a business classified as held for sale which also meets the criteria for discontinued operations are segregated in the consolidated balance sheets for the current and prior periods presented. Refer to Note 19, Discontinued Operations.
Business Combinations	Business Combinations We allocate the consideration transferred to the fair value of assets acquired and liabilities assumed based on their estimated fair values. The excess of the consideration transferred over the fair values of these identifiable assets and liabilities is recorded as goodwill. Such valuations require management to make significant estimates and assumptions, including estimating average industry multiples, customer and service attrition rate, forecasted revenue and revenue growth rates, existing customer revenue, deferred revenue, discount rates, technology migration rates, royalty rates and estimating future cash flows. Management’s estimates of fair value are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. During the measurement period, which is one year from the acquisition date, we may record adjustments to the assets acquired and liabilities assumed, with the corresponding offset to goodwill. Upon the conclusion of the measurement period, any subsequent adjustments are recorded to earnings. Transaction costs associated with business combinations are expensed as incurred and are included in selling, general and administrative expenses on our consolidated statements of operations. When the purchase consideration includes contingent consideration, we record the fair value of the contingent consideration as of the date of acquisition, and subsequently remeasure the contingent consideration at fair value as of each reporting date through our consolidated statements of operations.
Goodwill	Goodwill We perform annual impairment testing on goodwill in the fourth quarter of each fiscal year or when events occur or circumstances change that would, more likely than not, reduce the fair value of a reporting unit below our carrying value. We have the option (i) to assess goodwill for possible impairment by performing a qualitative analysis to determine if it is more likely than not that the fair value of a reporting unit is less than our carrying amount or (ii) to perform the quantitative impairment test. The quantitative impairment test involves comparing the estimated fair value of a reporting unit with our respective carrying amount, including goodwill. If the estimated fair value exceeds carrying amount, goodwill is considered not to be impaired. If, however, the fair value of the reporting unit is less than carrying amount, an impairment loss is recognized in an amount equal to the excess, not to exceed the carrying amount of goodwill. The fair values of our reporting units are computed by weighting a discounted cash flow model and a reference transaction model which included inputs developed using both internal and market-based data, or in a disposal transaction based on the best indicator of fair value which might include the proceeds to be received upon sale. Our key assumptions in the discounted cash flow model included, but were not limited to, the weighted average cost of capital, revenue growth rates (including long-term growth rates), and operating margins. The weighted average cost of capital reflected the increases in market interest rates. Our reference transaction model derives indications of value based on mergers and acquisition transactions in the digital advertising industry. Key assumptions in this model include, but were not limited to, the selection of comparable transactions, and the revenue and EBITDA multiples and EBITDA margins from those transactions. Unanticipated events or circumstances may occur that could affect the accuracy or validity of such assumptions, estimates or actual results. We completed a qualitative assessment of our Partner Network reporting unit, the only reporting unit with goodwill, and determined it is not more likely than not that the fair value of the reporting unit is less than the carrying amount for fiscal 2023. Refer to Note 6, Goodwill, Internal-Use Software Development Costs, Net, and Intangible Assets, Net, regarding impairment of goodwill in fiscal 2022 and Note 19, Discontinued Operations regarding discontinued operation impairments in fiscal 2023.
Leases	Leases We determine if an arrangement is a lease at inception. Operating leases are included in operating lease right-of-use (“ROU”) assets, other current liabilities, and operating lease liabilities in our consolidated balance sheets. Finance leases are included in property and equipment, other current liabilities, and other long-term liabilities in our consolidated balance sheets. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we generally use our incremental borrowing rate based on the estimated rate of interest for collateralized borrowing over a similar term of the lease payments at commencement date. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term.
Revenue Recognition	Revenue Recognition We recognize revenue when control of the promised services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those services. We determine revenue recognition through the following steps; (i) Identification of a contract with a customer, (ii) Identification of the performance obligations in the contract, (iii) Determination of the transaction price, (iv) Allocation of the transaction price to the performance obligations in the contract, and (v) Recognition of revenue when or as the performance obligations are satisfied. Advertising We earn revenue by directly acquiring traffic to our owned and operated websites and utilizing our RAMP platform and additional services to generate end-users for our Advertising Partners. For this revenue stream, we are the principal in the transaction and report revenue on a gross basis for the amounts received from Advertising Partners. For this revenue, we have determined that we are the principal since we have a risk of loss on the user-traffic that we are acquiring for monetization with our Advertising Partners, and, in the case of our owned and operated websites, we maintain the website, provide the content and bear the cost and risk of loss associated with the digital online inventory available on our website. Revenue is also earned from revenue-sharing arrangements with our Network Partners related to the use of our RAMP platform and additional services provided to them in order to direct advertising by our Advertising Partners to their digital online inventory. We have determined that we are the agent in these transactions and therefore report revenue on a net basis, because (a) we do not control the underlying digital online inventory, (b) we do not acquire the corresponding user-traffic and do not have risk of loss in connection therewith, and (c) the pricing is in the form of a substantively fixed-percentage revenue-sharing arrangement. We report the revenue generated under our revenue-sharing arrangements on a net basis, based on the difference between amounts received by us from our Advertising Partners, less amounts remitted to the Network Partners based on the underlying revenue-sharing agreements. We recognize revenue upon delivering user-traffic to our Advertising Partners based on a cost-per-click or cost-per-thousand impression basis. Cost of Revenue Cost of revenue primarily consists of traffic acquisition costs, which are the costs to place advertisements to acquire customers to our websites, as well as domain name registration costs and licensing costs to provide mapping services to Mapquest.com. We do not pre-pay any traffic acquisition costs, and therefore, we expense such costs as incurred.
Salaries and Benefits	Salaries and Benefits Salaries and benefits expenses include salaries, bonuses, stock-based compensation and employee benefits costs.
Stock-Based Compensation	Stock-Based Compensation Compensation cost related to stock-based payments is measured based on the fair value of the units issued and recognized in salaries and benefits expenses on our consolidated statement of operations. We have elected to treat stock-based payment awards with time-based service condition(s) only as a single award, with the related compensation expense recognized on a straight-line basis. Predecessor Period The assumptions used in the Black-Scholes model to value equity in the Predecessor period are based upon the following; (i) the fair value of S1 Holdco’s equity was determined by S1 Holdco’s Board of Directors, with input from management and contemporaneous valuation reports prepared by a third-party valuation specialist, as the equity was not publicly traded, (ii) the expected term of the award was estimated by considering the contractual term and vesting period of the award, the employees’ expected exercise behavior and the post-vesting employee turnover rate. For non-employees, the expected life equals the contractual term of the award, (iii) the risk-free interest rate was based on published U.S. Treasury Department interest rates for the expected term of the underlying award and (iv) the volatility was based on the expected unit price volatility of the underlying units over the expected term of the award which was based upon historical share price data of an index of comparable publicly traded companies. Replacement Awards Pursuant to the Merger, we were required to replace certain profits interests awards, the value creation units ("VCU") and Class F Units ("F Units"), with a combination of a restricted stock unit (“RSU”) in our shares and a cash award (collectively, "Replacement Awards”). The fair value of the Replacement Awards was derived utilizing the transaction closing price of $10.00. The Merger triggered a liquidating event, therefore, the portion of the Replacement Awards issued in connection with the Merger that was associated with services rendered through the date of the Merger are included in the total consideration transferred, with the exception of the unvested awards subject to service vesting conditions where the service condition has not been completed. With regards to the remaining unvested portion of the Replacement Awards, we continue to recognize compensation expense on a straight-line basis over the original requisite service period and recognize forfeitures as they occur. For Replacement Awards forfeited prior to vesting, we recognize accelerated compensation expense for the remaining unvested shares, as a share of our common stock becomes issuable to the previous investors immediately upon forfeiture. For the cash portion of the Replacement Awards forfeited prior to vesting, we recognize accelerated compensation expense for the unpaid amount, as that cash amount becomes payable to the previous investors immediately upon forfeiture. Post-Combination Awards For awards granted subsequent to the Merger, our fair value of the related restricted stock units was derived from the market price of our Class A common stock, which is traded on the NYSE. As these awards are subject only to time-based service conditions, we recognize compensation expense for these awards on a straight-line basis over the requisite service period for each award, generally three years, and recognize forfeitures as they occur. Liability Awards In connection with the Merger and acquisition of Protected (see Note 3, Merger), we effected an incentive plan for eligible recipients, the Protected Incentive Plan, which is payable in a fixed value of fully-vested shares of our Class A common stock upon the satisfaction of certain performance and service conditions. The Protected Incentive Plan targets were deemed to no longer be achievable due to the sale of Protected (see Note 19, Discontinued Operations). In connection with the acquisition of CouponFollow (see Note 4, Acquisitions) we effected an incentive plan for eligible recipients. Refer to Note 18, Stock-Based Compensation. We recognize compensation cost for these liability awards with performance and service conditions if and when it is deemed probable that the performance condition will be achieved. The probability of vesting is evaluated at each reporting period taking into consideration actual results to-date and forecasts and compensation cost adjusted to reflect the completed portion of the service period with a graded vesting attribution.
Repurchased Shares	Repurchased Shares Repurchased shares of our common stock are retired, and the cost of the retired shares in excess of par value, including any direct and incremental costs associated with the repurchase, is recorded as a decrease in retained earnings.
Selling, General, and Administrative Expenses	Selling, General, and Administrative Expenses Selling, general, and administrative expenses consist of fees for professional services, occupancy costs, travel and entertainment. These costs are expensed as incurred.
Depreciation and Amortization	Depreciation and Amortization Depreciation and amortization expenses are primarily attributable to our capital investments and consist of property and equipment depreciation and amortization of intangible assets with finite lives.
Income Taxes	Income Taxes We are the sole managing member of S1 Holdco and, as a result, consolidate the financial results of S1 Holdco. S1 Holdco is treated as a partnership for U.S. federal and most applicable state and local income tax purposes. As a partnership, S1 Holdco is not subject to U.S. federal and certain state and local income taxes. Any taxable income or loss generated by S1 Holdco is passed through to and included in the taxable income or loss of its members, including us, on a pro rata basis. We are subject to U.S. federal income taxes, in addition to state and local income taxes with respect to its allocable share of any taxable income or loss of S1 Holdco, as well as any stand-alone income or loss generated by us. We account for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities (“DTAs” and “DTLs”, as applicable) for the expected future tax consequences of events that have been included in the financial statements. Under this method, we determine DTAs and DTLs on the basis of the differences between the financial statement and tax bases of assets and liabilities by using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on DTAs and DTLs is recognized in income in the period that includes the enactment date. We recognize DTAs to the extent that we believe that these assets are more likely than not to be realized. In making such a determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, carryback potential if permitted under the tax law, and results of operations. If we determine that we would not be able to realize our DTAs in the future in excess of their net recorded amount, we would make an adjustment to the DTA valuation allowance, which would increase the provision for income taxes. We record uncertain tax positions on the basis of a two-step process in which (1) we determine whether it is more likely than not that the tax positions will be sustained on the basis of our technical merits and (2) for those tax positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority. We recognize both accrued interest and penalties, when appropriate, in the provision for income taxes on the consolidated statements of operations.
Non-Controlling Interest	Non-Controlling Interest We report a non-controlling interest representing the economic interest in S1 Holdco held by certain individuals and entities other than us. The non-controlling interest is comprised of certain selling equity holders of S1 Holdco that retained an economic interest through their ownership of Class B units in S1 Holdco as of the closing of the Merger, along with the same number of corresponding shares of Class C common stock in us. The non-controlling interest holders may, from time to time, require us to convert all or a portion of their economic interest via a redemption of their Class B units in S1 Holdco together with surrendering their corresponding shares of Class C common stock in us in exchange for shares of Class A common stock on a one-for-one basis. Upon the redemption of Class B Units, our Board of Directors may also elect to settle the non-controlling interest holder's Class B units in cash. We are required to maintain a one-to-one ratio of Class A common stock outstanding to our Class A units in S1 Holdco and Class C common stock to the non-controlling interest’s Class B units. As redemptions occur or other transactions result in the issuance or retirement of a share of Class A common stock, S1 Holdco is required to issue or retire a Class A unit in S1 Holdco to maintain in parity with the corresponding number of outstanding shares of Class A common stock. These transactions may result in a change in the total number of units outstanding in S1 Holdco and/or a change in the percentage that we own of S1 Holdco. As a result, any change in ownership that does not result in a change of control is accounted for as an equity transaction and we adjust for the re-allocation of equity between us and our non-controlling interest.
Recent Accounting Pronouncements and Accounting Pronouncements Not Yet Adopted	Recent Accounting Pronouncements On January 1, 2023, we adopted ASU No. 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Loss on Financial Instruments". Accordingly, upon adoption of this new standard, we recorded an allowance for credit losses of $0.3 million, with a corresponding cumulative adjustment to the beginning balance of accumulated deficit in the first quarter of fiscal 2023. Accounting Pronouncements Not Yet Adopted In November 2023, the Financial Accounting Standards Board issued ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (ASU 2023-07), which requires an enhanced disclosure of significant segment expenses on an annual and interim basis. This guidance will be effective for the annual periods beginning the year ended December 31, 2024, and for interim periods beginning January 1, 2025. Early adoption is permitted. Upon adoption, the guidance should be applied retrospectively to all prior periods presented in the financial statements. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (ASU 2023-09), which improves the transparency of income tax disclosures by requiring consistent categories and greater disaggregation of information in the effective tax rate reconciliation and income taxes paid disaggregated by jurisdiction. It also includes certain other amendments to improve the effectiveness of income tax disclosures. This guidance will be effective for the annual periods beginning the year ended December 31, 2025. Early adoption is permitted. Upon adoption, the guidance can be applied prospectively or retrospectively. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements.

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2023

The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The accompanying consolidated financial statements include the accounts of System1, Inc. and its subsidiaries for the Successor periods, and S1 Holdco for the Predecessor period. All intercompany accounts and transactions have been eliminated in the consolidation of the financial statements.

Principles of Consolidation

Use of Estimates

The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Management’s estimates are based on historical information available as of the date of the consolidated financial statements and various other assumptions that we believe are reasonable under the circumstances. Actual results could differ from those estimates.

Significant estimates and assumptions reflected in these consolidated financial statements include, but are not limited to, valuation of goodwill, acquired intangible assets, assets held for sale and long-lived assets, valuation and recognition of stock-based compensation awards, income taxes, contingent consideration and determination of the fair value of the warrant liabilities. On an ongoing basis, management evaluates our estimates compared to historical experience and trends, which form the basis for making judgments about the carrying value of assets and liabilities.

Cash and Cash Equivalents

Cash and cash equivalents consist of amounts held as bank deposits. Cash is deposited with high-credit-quality financial institutions and, at times, such balances with any one financial institution may exceed the insurance limits of the prevailing regulatory body. Historically, we have not experienced any losses related to these cash balances and we believe that there is minimal risk of expected future losses. However, there can be no assurance that there will not be losses on these deposits.

Accounts Receivable, Net

We maintain an allowance for doubtful accounts receivable for expected credit losses. In estimating the required allowance, we take into consideration the overall quality and aging of the receivable portfolio, creditworthiness of customers based on ongoing credit evaluation, the number of customers, specifically identified customer risks, historical write-off experience and the current economic environment, reasonable and supportable forecasts of future economic conditions, and other factors that may affect our ability to collect from customers. The payment term for our accounts receivable is typically 30 days.

Foreign Currency

The functional currency of our wholly-owned subsidiaries is the currency of the primary economic environment in which they operate. Assets and liabilities are translated into U.S. dollars using exchange rates prevailing at the balance sheet date, while revenue and expenses are translated at average exchange rates during the year. Gains and losses resulting from the translation of our consolidated balance sheets are recorded as a component of accumulated other comprehensive (loss) income. Foreign currency transaction gains and losses are recorded in other income (expense), net on our consolidated statement of operations.

Warrant Liability

We account for the Public Warrants and Private Placement Warrants (collectively “Warrants”), as liabilities measured at fair value each balance sheet date, with changes in fair value recorded in Change in fair value of warrant liabilities in the consolidated statements of operations. Refer to Note 13, Warrants and Note 14, Fair Value Measurement.

Fair Value of Financial Instruments

Fair value is the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. We measure fair value based on a three-level hierarchy of inputs, maximizing the use of observable inputs, where available, and minimizing the use of unobservable inputs when measuring fair value. A financial instrument’s level within the three-level hierarchy is based on the lowest level of input that is significant to the fair value measurement.

The three-level hierarchy of inputs is as follows:

Level 1: Observable inputs such as unadjusted, quoted prices in active markets for identical assets or liabilities at the measurement date;

Level 2: Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities; and

Level 3: Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. These inputs are based on our own assumptions about current market conditions and require significant management judgment or estimation.

Financial instruments consist of cash, cash equivalents, restricted cash, accounts receivable, accounts payable, accrued liabilities, and warrant liabilities. Cash equivalents and restricted cash are stated at fair value on a recurring basis. Accounts receivable, accounts payable and accrued liabilities are stated at their carrying value, which approximates fair value due to the short time to the expected receipt or payment date. As of December 31, 2023 and 2022 (Successor), our outstanding debt included a Term Loan, for which fair value was estimated using an observable market quotation (Level 2).

Our liabilities measured at fair value relate to the Public Warrant liabilities (Level 1), Private Placement Warrant liabilities (Level 2), the former CEO of S1 Holdco's equity profits interest liability (Level 3) and contingent consideration (Level 3).

Certain assets, including goodwill, intangible assets, assets held for sale and other long-lived assets, are also subject to measurement at fair value on a nonrecurring basis if they are deemed to be impaired as a result of an impairment review. We determine the fair value by applying Level 3 unobservable inputs.

Restricted Cash

Our restricted cash as of December 31, 2023 (Successor) and December 31, 2022 (Successor) primarily related to; (i) cash collateralized letter of credit we maintain in connection with our corporate office lease, (ii) escrow account related to unvested equity awards as of the closing of the Merger that will be cash settled, (iii) escrow account related to the indemnification of obligations related to the RoadWarrior acquisition and (iv) escrow account related to the postcombination compensation arrangement related to the CouponFollow acquisition.

Property and Equipment, Net

Property and equipment are stated at cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets. Repairs and maintenance are charged to expense as incurred, while improvements are capitalized. Upon the sale or retirement of property and equipment, the accounts are relieved of the cost and the related accumulated depreciation, and any resulting gain or loss is included in selling, general, and administrative expense on the consolidated statements of operations.

Internal-Use Software Development Costs, Net

Internal-use software development costs are stated at cost, less accumulated amortization. We capitalize certain internal-use software development costs associated with creating and enhancing internally developed software related to our technology infrastructure, including continuing to develop and deploy our RAMP platform. Deployment activities focus on enhancement of our customer acquisition capabilities, including website enhancements and tools for marketing support, and upgrades of dashboards and reporting tools. These costs are comprised of personnel costs, which include salaries, bonuses, stock-based compensation and employee benefits’ expenses for employees who are directly associated with, and who devote significant time to, software projects, as well as external direct costs of materials and services consumed in developing or obtaining the software. Internal-use software development costs that do not meet the qualification for capitalization are expensed as incurred, and are recorded in salaries and benefits expense on the consolidated statement of operations.

Internal-use software development activities generally consist of three stages: (i) the planning stage, (ii) the application and infrastructure development stage, and (iii) the post-implementation stage. Costs incurred in the planning and post-implementation stages of software development, including costs associated with the post configuration training and repairs and maintenance of the developed technologies, are expensed as incurred. Costs incurred in the application and infrastructure development stage, including significant enhancements and upgrades, are capitalized once the preliminary project stage is completed, management has authorized further funding for the

completion of the project, and it is probable that the project will be completed and the software will perform as intended. Capitalization ends once a project is substantially complete, and the software and technologies are ready for their intended purpose(s).

Internal-use software development costs are amortized using a straight-line method over an estimated useful life of three years, commencing when the software is ready for our intended use, which approximates the period over which the expected benefits will be derived. We do not transfer ownership of or software or lease our software to third parties.

Intangible Assets

Intangible assets primarily consist of acquired technology, customer relationships and trade names/trademarks. We determine the appropriate useful life based on management’s estimate of the applicable intangible asset’s remaining economic useful life at the time of acquisition. Intangible assets are generally amortized over their estimated economic useful lives using a straight-line method, which approximates the pattern in which the economic benefits are consumed. The fair value of the intangible assets acquired in a business combination are determined as follows; (i) trademarks using the relief from royalty method under the income-based approach. Key assumptions include forecasted revenue, an estimated royalty rate applicable to the trademarks, and a discount rate; (ii) customer relationships using an excess-earnings method utilizing distributor inputs. Key assumptions include customer attrition rate, revenue growth rate, existing customer revenue, deferred revenue, and a discount rate; and (iii) technology using the excess-earnings method. Key assumptions include forecasted revenue, technology migration rate and a discount rate.

Impairment of Long-Lived Assets

We assess the recoverability of our long-lived assets when events or changes in circumstances indicate that their carrying value may not be recoverable. Such events or changes in circumstances may include a significant adverse change in the extent or manner in which a long-lived asset is being used; significant adverse changes in legal factors or in the business climate that could affect the value of a long-lived asset; an accumulation of costs significantly in excess of the amount originally expected for the acquisition or development of a long-lived asset; current or future operating or cash flow losses that demonstrate continuing losses associated with the use of a long-lived asset; or a current expectation that, more likely than not, a long-lived asset will be sold or otherwise disposed of significantly before the end of our previously estimated useful life. We perform impairment testing at the asset group level that represents the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. We assess recoverability of our long-lived assets by determining whether the carrying value of the asset group can be recovered through projected undiscounted cash flows over their remaining useful lives inclusive of an estimated residual value. If the carrying value of the asset group exceeds the forecasted undiscounted cash flows, an impairment loss is recognized and measured as the amount by which the carrying amount exceeds the estimated fair value. An impairment loss is charged to operations in the period in which management determines such impairment has occurred. Refer to Note 6, Goodwill, Internal-Use Software Development Costs, Net, and Intangible Assets, Net.

Assets and Liabilities Held for Sale

We report a business as held for sale when management has received approval to sell the business and is committed to a formal plan, the business is available for immediate sale, the business is being actively marketed, the sale is anticipated to occur during the ensuing year and certain other specified criteria are met. A business classified as held for sale is recorded at the lower of its carrying amount or estimated fair value less costs to sell, which is required to be remeasured each reporting period. If the carrying amount of the business exceeds its estimated fair value, which is based on the estimated sales price of the transaction, less costs to sell, a loss is recognized. Depreciation and amortization is not recorded on assets of a business classified as held for sale. Refer to Note 19, Discontinued Operations.

Discontinued Operations

We present discontinued operations when there is a disposal of a component or a group of components that represents a strategic shift that will have a major effect on operations and financial results. The results of discontinued operations are reported in net income from discontinued operations in the consolidated statements of operations for all periods presented, commencing in the period in which the business is either disposed of or is classified as held for sale, including any gain or loss recognized on closing or adjustment of the carrying amount to fair value less costs to sell. Assets and liabilities related to a business classified as held for sale which also meets the criteria for discontinued operations are segregated in the consolidated balance sheets for the current and prior periods presented. Refer to Note 19, Discontinued Operations.

Business Combinations

We allocate the consideration transferred to the fair value of assets acquired and liabilities assumed based on their estimated fair values. The excess of the consideration transferred over the fair values of these identifiable assets and liabilities is recorded as goodwill. Such valuations require management to make significant estimates and assumptions, including estimating average industry multiples, customer and service attrition rate, forecasted revenue and revenue growth rates, existing customer revenue, deferred revenue, discount rates, technology migration rates, royalty rates and estimating future cash flows. Management’s estimates of fair value are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. During the measurement period, which is one year from the acquisition date, we may record adjustments to the assets acquired and liabilities assumed, with the corresponding offset to goodwill. Upon the conclusion of the measurement period, any subsequent adjustments are recorded to earnings.

Transaction costs associated with business combinations are expensed as incurred and are included in selling, general and administrative expenses on our consolidated statements of operations. When the purchase consideration includes contingent consideration, we record the fair value of the contingent consideration as of the date of acquisition, and subsequently remeasure the contingent consideration at fair value as of each reporting date through our consolidated statements of operations.

Goodwill

We perform annual impairment testing on goodwill in the fourth quarter of each fiscal year or when events occur or circumstances change that would, more likely than not, reduce the fair value of a reporting unit below our carrying value. We have the option (i) to assess goodwill for possible impairment by performing a qualitative analysis to determine if it is more likely than not that the fair value of a reporting unit is less than our carrying amount or (ii) to perform the quantitative impairment test. The quantitative impairment test involves comparing the estimated fair value of a reporting unit with our respective carrying amount, including goodwill. If the estimated fair value exceeds carrying amount, goodwill is considered not to be impaired. If, however, the fair value of the reporting unit is less than carrying amount, an impairment loss is recognized in an amount equal to the excess, not to exceed the carrying amount of goodwill.

The fair values of our reporting units are computed by weighting a discounted cash flow model and a reference transaction model which included inputs developed using both internal and market-based data, or in a disposal transaction based on the best indicator of fair value which might include the proceeds to be received upon sale. Our key assumptions in the discounted cash flow model included, but were not limited to, the weighted average

cost of capital, revenue growth rates (including long-term growth rates), and operating margins. The weighted average cost of capital reflected the increases in market interest rates. Our reference transaction model derives indications of value based on mergers and acquisition transactions in the digital advertising industry. Key assumptions in this model include, but were not limited to, the selection of comparable transactions, and the revenue and EBITDA multiples and EBITDA margins from those transactions. Unanticipated events or circumstances may occur that could affect the accuracy or validity of such assumptions, estimates or actual results.

We completed a qualitative assessment of our Partner Network reporting unit, the only reporting unit with goodwill, and determined it is not more likely than not that the fair value of the reporting unit is less than the carrying amount for fiscal 2023. Refer to Note 6, Goodwill, Internal-Use Software Development Costs, Net, and Intangible Assets, Net, regarding impairment of goodwill in fiscal 2022 and Note 19, Discontinued Operations regarding discontinued operation impairments in fiscal 2023.

Leases

We determine if an arrangement is a lease at inception. Operating leases are included in operating lease right-of-use (“ROU”) assets, other current liabilities, and operating lease liabilities in our consolidated balance sheets. Finance leases are included in property and equipment, other current liabilities, and other long-term liabilities in our consolidated balance sheets.

ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we generally use our incremental borrowing rate based on the estimated rate of interest for collateralized borrowing over a similar term of the lease payments at commencement date. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term.

Revenue Recognition

We recognize revenue when control of the promised services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those services. We determine revenue recognition through the following steps; (i) Identification of a contract with a customer, (ii) Identification of the performance obligations in the contract, (iii) Determination of the transaction price, (iv) Allocation of the transaction price to the performance obligations in the contract, and (v) Recognition of revenue when or as the performance obligations are satisfied.

Advertising

We earn revenue by directly acquiring traffic to our owned and operated websites and utilizing our RAMP platform and additional services to generate end-users for our Advertising Partners. For this revenue stream, we are the principal in the transaction and report revenue on a gross basis for the amounts received from Advertising Partners. For this revenue, we have determined that we are the principal since we have a risk of loss on the user-traffic that we are acquiring for monetization with our Advertising Partners, and, in the case of our owned and operated websites, we maintain the website, provide the content and bear the cost and risk of loss associated with the digital online inventory available on our website.

Revenue is also earned from revenue-sharing arrangements with our Network Partners related to the use of our RAMP platform and additional services provided to them in order to direct advertising by our Advertising Partners to their digital online inventory. We have determined that we are the agent in these transactions and therefore report revenue on a net basis, because (a) we do not control the underlying digital online inventory, (b) we do not acquire the corresponding user-traffic and do not have risk of loss in connection therewith, and (c) the pricing is in the form of a substantively fixed-percentage revenue-sharing arrangement. We report the revenue generated under our revenue-sharing arrangements on a net basis, based on the difference between amounts received by us

from our Advertising Partners, less amounts remitted to the Network Partners based on the underlying revenue-sharing agreements.

We recognize revenue upon delivering user-traffic to our Advertising Partners based on a cost-per-click or cost-per-thousand impression basis.

Cost of Revenue

Cost of revenue primarily consists of traffic acquisition costs, which are the costs to place advertisements to acquire customers to our websites, as well as domain name registration costs and licensing costs to provide mapping services to Mapquest.com. We do not pre-pay any traffic acquisition costs, and therefore, we expense such costs as incurred.

Salaries and Benefits

Salaries and benefits expenses include salaries, bonuses, stock-based compensation and employee benefits costs.

Stock-Based Compensation

Compensation cost related to stock-based payments is measured based on the fair value of the units issued and recognized in salaries and benefits expenses on our consolidated statement of operations. We have elected to treat stock-based payment awards with time-based service condition(s) only as a single award, with the related compensation expense recognized on a straight-line basis.

Predecessor Period

The assumptions used in the Black-Scholes model to value equity in the Predecessor period are based upon the following; (i) the fair value of S1 Holdco’s equity was determined by S1 Holdco’s Board of Directors, with input from management and contemporaneous valuation reports prepared by a third-party valuation specialist, as the equity was not publicly traded, (ii) the expected term of the award was estimated by considering the contractual term and vesting period of the award, the employees’ expected exercise behavior and the post-vesting employee turnover rate. For non-employees, the expected life equals the contractual term of the award, (iii) the risk-free interest rate was based on published U.S. Treasury Department interest rates for the expected term of the underlying award and (iv) the volatility was based on the expected unit price volatility of the underlying units over the expected term of the award which was based upon historical share price data of an index of comparable publicly traded companies.

Replacement Awards

Pursuant to the Merger, we were required to replace certain profits interests awards, the value creation units ("VCU") and Class F Units ("F Units"), with a combination of a restricted stock unit (“RSU”) in our shares and a cash award (collectively, "Replacement Awards”). The fair value of the Replacement Awards was derived utilizing the transaction closing price of $10.00. The Merger triggered a liquidating event, therefore, the portion of the Replacement Awards issued in connection with the Merger that was associated with services rendered through the date of the Merger are included in the total consideration transferred, with the exception of the unvested awards subject to service vesting conditions where the service condition has not been completed. With regards to the remaining unvested portion of the Replacement Awards, we continue to recognize compensation expense on a straight-line basis over the original requisite service period and recognize forfeitures as they occur. For Replacement Awards forfeited prior to vesting, we recognize accelerated compensation expense for the remaining unvested shares, as a share of our common stock becomes issuable to the previous investors immediately upon forfeiture. For the cash portion of the Replacement Awards forfeited prior to vesting, we recognize accelerated compensation expense for the unpaid amount, as that cash amount becomes payable to the previous investors immediately upon forfeiture.

Post-Combination Awards

For awards granted subsequent to the Merger, our fair value of the related restricted stock units was derived from the market price of our Class A common stock, which is traded on the NYSE. As these awards are subject only to time-based service conditions, we recognize compensation expense for these awards on a straight-line basis over the requisite service period for each award, generally three years, and recognize forfeitures as they occur.

Liability Awards

In connection with the Merger and acquisition of Protected (see Note 3, Merger), we effected an incentive plan for eligible recipients, the Protected Incentive Plan, which is payable in a fixed value of fully-vested shares of our Class A common stock upon the satisfaction of certain performance and service conditions. The Protected Incentive Plan targets were deemed to no longer be achievable due to the sale of Protected (see Note 19, Discontinued Operations).

In connection with the acquisition of CouponFollow (see Note 4, Acquisitions) we effected an incentive plan for eligible recipients. Refer to Note 18, Stock-Based Compensation.

We recognize compensation cost for these liability awards with performance and service conditions if and when it is deemed probable that the performance condition will be achieved. The probability of vesting is evaluated at each reporting period taking into consideration actual results to-date and forecasts and compensation cost adjusted to reflect the completed portion of the service period with a graded vesting attribution.

Repurchased Shares

Repurchased shares of our common stock are retired, and the cost of the retired shares in excess of par value, including any direct and incremental costs associated with the repurchase, is recorded as a decrease in retained earnings.

Selling, General, and Administrative Expenses

Selling, general, and administrative expenses consist of fees for professional services, occupancy costs, travel and entertainment. These costs are expensed as incurred.

Depreciation and Amortization

Depreciation and amortization expenses are primarily attributable to our capital investments and consist of property and equipment depreciation and amortization of intangible assets with finite lives.

Income Taxes

We are the sole managing member of S1 Holdco and, as a result, consolidate the financial results of S1 Holdco. S1 Holdco is treated as a partnership for U.S. federal and most applicable state and local income tax purposes. As a partnership, S1 Holdco is not subject to U.S. federal and certain state and local income taxes. Any taxable income or loss generated by S1 Holdco is passed through to and included in the taxable income or loss of its members, including us, on a pro rata basis. We are subject to U.S. federal income taxes, in addition to state and local income taxes with respect to its allocable share of any taxable income or loss of S1 Holdco, as well as any stand-alone income or loss generated by us.

We account for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities (“DTAs” and “DTLs”, as applicable) for the expected future tax consequences of events that have been included in the financial statements. Under this method, we determine DTAs and DTLs on the

basis of the differences between the financial statement and tax bases of assets and liabilities by using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on DTAs and DTLs is recognized in income in the period that includes the enactment date.

We recognize DTAs to the extent that we believe that these assets are more likely than not to be realized. In making such a determination, we consider all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, carryback potential if permitted under the tax law, and results of operations. If we determine that we would not be able to realize our DTAs in the future in excess of their net recorded amount, we would make an adjustment to the DTA valuation allowance, which would increase the provision for income taxes.

We record uncertain tax positions on the basis of a two-step process in which (1) we determine whether it is more likely than not that the tax positions will be sustained on the basis of our technical merits and (2) for those tax positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority. We recognize both accrued interest and penalties, when appropriate, in the provision for income taxes on the consolidated statements of operations.

Non-Controlling Interest

We report a non-controlling interest representing the economic interest in S1 Holdco held by certain individuals and entities other than us. The non-controlling interest is comprised of certain selling equity holders of S1 Holdco that retained an economic interest through their ownership of Class B units in S1 Holdco as of the closing of the Merger, along with the same number of corresponding shares of Class C common stock in us. The non-controlling interest holders may, from time to time, require us to convert all or a portion of their economic interest via a redemption of their Class B units in S1 Holdco together with surrendering their corresponding shares of Class C common stock in us in exchange for shares of Class A common stock on a one-for-one basis. Upon the redemption of Class B Units, our Board of Directors may also elect to settle the non-controlling interest holder's Class B units in cash. We are required to maintain a one-to-one ratio of Class A common stock outstanding to our Class A units in S1 Holdco and Class C common stock to the non-controlling interest’s Class B units. As redemptions occur or other transactions result in the issuance or retirement of a share of Class A common stock, S1 Holdco is required to issue or retire a Class A unit in S1 Holdco to maintain in parity with the corresponding number of outstanding shares of Class A common stock. These transactions may result in a change in the total number of units outstanding in S1 Holdco and/or a change in the percentage that we own of S1 Holdco. As a result, any change in ownership that does not result in a change of control is accounted for as an equity transaction and we adjust for the re-allocation of equity between us and our non-controlling interest.

Recent Accounting Pronouncements and Accounting Pronouncements Not Yet Adopted

Recent Accounting Pronouncements

On January 1, 2023, we adopted ASU No. 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Loss on Financial Instruments". Accordingly, upon adoption of this new standard, we recorded an allowance for credit losses of $0.3 million, with a corresponding cumulative adjustment to the beginning balance of accumulated deficit in the first quarter of fiscal 2023.

Accounting Pronouncements Not Yet Adopted

In November 2023, the Financial Accounting Standards Board issued ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (ASU 2023-07), which requires an enhanced disclosure of significant segment expenses on an annual and interim basis. This guidance will be effective for the annual periods beginning the year ended December 31, 2024, and for interim periods beginning January 1, 2025. Early adoption is permitted. Upon adoption, the guidance should be applied retrospectively to all prior periods presented in the financial statements. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements.

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (ASU 2023-09), which improves the transparency of income tax disclosures by requiring consistent categories and greater disaggregation of information in the effective tax rate reconciliation and income taxes paid disaggregated by jurisdiction. It also includes certain other amendments to improve the effectiveness of income tax disclosures. This guidance will be effective for the annual periods beginning the year ended December 31, 2025. Early adoption is permitted. Upon adoption, the guidance can be applied prospectively or retrospectively. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements.