SHARE REPURCHASE PROGRAM

On January 31, 2022, the Company’s Board of Directors authorized a share repurchase program (the “Share Repurchase Program”), pursuant to which the Company may, from time to time, purchase shares of its Class A common stock, for an aggregate repurchase price not to exceed $500 million. The Share Repurchase Program expires on January 31, 2025 and does not obligate the Company to acquire any particular amount of shares. As of June 30, 2023, there was $365.7 million remaining to repurchase shares under the Share Repurchase Program.

INCENTIVE AWARD PLAN

On April 6, 2023, the Company's Board of Directors adopted the 2023 Incentive Award Plan (the "2023 Plan"), which became effective upon approval by the Company's stockholders on June 12, 2023. The 2023 Plan replaced and superseded in its entirety the 2017 Plan. A total of 7,500,000 shares of Class A Common Stock are reserved for issuance under the 2023 Plan, which provides for the grants of ISOs, non-qualified stock options, restricted stock and various other types of equity awards as described in the plan to the employees, consultants, and directors of the Company. The 2023 Plan is administered by the Company's Board of Directors with respect to awards to non-employee directors and by the Company's Compensation Committee with respect to other eligible participants.

In the six months ended June 30, 2023, the Company granted restricted stock with time-based vesting as well as performance-based awards. The performance-based awards include a market condition tied to the Company’s total shareholder return in relation to its peer companies as well as a financial performance condition tied to annual earnings per share (“EPS”) growth. The vesting and ultimate payout of performance awards is determined at the end of the three-year performance period and can vary from zero to 200% based on actual results. As of June 30, 2023, there were 6,768,539 shares available for grant as equity awards under the 2023 Incentive Award Plan if target levels are achieved for performance-based awards and 6,292,756 if maximum levels are achieved.

The Company determines the fair value of restricted stock awards and any performance-related components based on the closing market price of the Company’s common stock on the date of grant. For share-based awards with a performance-based vesting requirement, the Company evaluates the probability of achieving the performance criteria throughout the performance period and will adjust stock compensation expense up or down based on its estimated probable outcome. Certain performance-based awards contain market condition components which are valued on the date of grant using a Monte Carlo simulation model.

For the three months ended June 30, 2023 and 2022, the Company recognized $16.9 million and $15.1 million of incentive stock compensation expense. For the six months ended June 30, 2023 and 2022, the Company recognized $30.4 million and $32.3 million of incentive stock compensation expense. As of June 30, 2023, the unamortized stock compensation of $111.6 million is expected to be recognized over a weighted-average period of 1.93 years.

STOCK PURCHASE PLAN

A total of 5,000,000 shares of Class A Common Stock are available for sale under the 2018 Employee Stock Purchase Plan (“2018 ESPP”). The 2018 ESPP provides eligible employees of the Company and its subsidiaries the opportunity to purchase shares of the Company’s Class A Common Stock at a purchase price equal to 85% of the fair market value on the first trading day or last trading day of each purchase period, whichever is lower. Eligible employees can invest up to 15% of their compensation through payroll deductions during each purchase period. The purchase price discount and the look-back feature cause the 2018 ESPP to be compensatory and the Company recognizes compensation expense, which is computed using the Black-Scholes valuation model.

For the three months ended June 30, 2023 and 2022, the Company recognized $0.8 million and $0.7 million of ESPP stock compensation expense. For the six months ended June 30, 2023 and 2022, the Company recognized $1.5 million of ESPP stock compensation expense. As of June 30, 2023, there were 3,667,869 shares available for sale under the 2018 ESPP.