Financial Instruments	3 Months Ended
Mar. 31, 2024
Financial Instruments [Abstract]
Financial Instruments	14. Financial Instruments Seller Earnouts Upon completion of the Business Combination, the equity owners of Alight Holdings received an earnout in the form of non-voting shares of Class B-1 and Class B-2 Common Stock, which automatically convert into Class A Common Stock if, at any time during the seven years following the Closing Date certain criteria are achieved. See Note 9 “Stockholders’ Equity” for additional information regarding the Seller Earnouts. The portion of the Seller Earnouts related to employee compensation is accounted for as share-based compensation. See Note 10 “Share-Based Compensation Expense” for additional information. The portion of the Seller Earnouts, which are not related to employee compensation, are accounted for as a contingent consideration liability at fair value within Financial instruments on the Condensed Consolidated Balance Sheets because the Seller Earnouts do not meet the criteria for classification within equity. This portion of the Seller Earnouts are subject to remeasurement at each balance sheet date. At March 31, 2024 and December 31, 2023, the Seller Earnouts had a fair value of $114 million and $95 million, respectively. For the three months ended March 31, 2024, the fair value remeasurement of the Seller Earnouts was a loss of $19 million. For the three months ended March 31, 2023, the Company recorded a loss of $13 million related to the fair value remeasurement of the Seller Earnouts. Gains or losses related to the remeasurement of Seller Earnouts are recorded in (Gain) Loss from change in fair value of financial instruments within the accompanying Condensed Consolidated Statements of Comprehensive Income (Loss). The fair value of the Class B-1 and B-2 Seller Earnouts, and the Class Z-B-1 and Z-B-2 contingent consideration instruments, is determined using Monte Carlo simulation and Option Pricing Methods (Level 3 inputs, see Note 16 "Fair Value Measurements"). Significant unobservable inputs are used in the assessment of fair value, including the following assumptions: volatility of 45%, risk-free interest rate of 4.28%, expected holding period of 4.26 years and probability assessments based on the likelihood of reaching the performance targets defined in the Business Combination. An increase in the risk-free interest rate or expected volatility would result in an increase in the fair value measurement of the Seller Earnouts and vice versa. In addition, the Class Z instruments are also accounted for as a contingent consideration liability at fair value within Financial instruments on the Condensed Consolidated Balance Sheets because these instruments do not meet the criteria for classification within equity. The fair value of the Class Z-A contingent consideration is determined using the ending share price as of the last day of each quarter. For the three months ended March 31, 2024 and 2023, the Company recorded losses of $2 million and $12 million, respectively, in (Gain) Loss from change in fair value of financial instruments in the Condensed Consolidated Statements of Comprehensive Income (Loss) as a result of the forfeiture of unvested management equity relating to the consideration that will be re-allocated to the holders of Class Z instruments upon vesting. See Note 9 “Stockholders’ Equity” for additional information regarding these instruments.

Financial Instruments

3 Months Ended

Mar. 31, 2024

14. Financial Instruments

Seller Earnouts

Upon completion of the Business Combination, the equity owners of Alight Holdings received an earnout in the form of non-voting shares of Class B-1 and Class B-2 Common Stock, which automatically convert into Class A Common Stock if, at any time during the seven years following the Closing Date certain criteria are achieved. See Note 9 “Stockholders’ Equity” for additional information regarding the Seller Earnouts.

The portion of the Seller Earnouts related to employee compensation is accounted for as share-based compensation. See Note 10 “Share-Based Compensation Expense” for additional information.

The portion of the Seller Earnouts, which are not related to employee compensation, are accounted for as a contingent consideration liability at fair value within Financial instruments on the Condensed Consolidated Balance Sheets because the Seller Earnouts do not meet the criteria for classification within equity. This portion of the Seller Earnouts are subject to remeasurement at each balance sheet date. At March 31, 2024 and December 31, 2023, the Seller Earnouts had a fair value of $114 million and $95 million, respectively. For

the three months ended March 31, 2024, the fair value remeasurement of the Seller Earnouts was a loss of $19 million. For the three months ended March 31, 2023, the Company recorded a loss of $13 million related to the fair value remeasurement of the Seller Earnouts. Gains or losses related to the remeasurement of Seller Earnouts are recorded in (Gain) Loss from change in fair value of financial instruments within the accompanying Condensed Consolidated Statements of Comprehensive Income (Loss).

The fair value of the Class B-1 and B-2 Seller Earnouts, and the Class Z-B-1 and Z-B-2 contingent consideration instruments, is determined using Monte Carlo simulation and Option Pricing Methods (Level 3 inputs, see Note 16 "Fair Value Measurements"). Significant unobservable inputs are used in the assessment of fair value, including the following assumptions: volatility of 45%, risk-free interest rate of 4.28%, expected holding period of 4.26 years and probability assessments based on the likelihood of reaching the performance targets defined in the Business Combination. An increase in the risk-free interest rate or expected volatility would result in an increase in the fair value measurement of the Seller Earnouts and vice versa.

In addition, the Class Z instruments are also accounted for as a contingent consideration liability at fair value within Financial instruments on the Condensed Consolidated Balance Sheets because these instruments do not meet the criteria for classification within equity. The fair value of the Class Z-A contingent consideration is determined using the ending share price as of the last day of each quarter. For the three months ended March 31, 2024 and 2023, the Company recorded losses of $2 million and $12 million, respectively, in (Gain) Loss from change in fair value of financial instruments in the Condensed Consolidated Statements of Comprehensive Income (Loss) as a result of the forfeiture of unvested management equity relating to the consideration that will be re-allocated to the holders of Class Z instruments upon vesting. See Note 9 “Stockholders’ Equity” for additional information regarding these instruments.