Stock-Based Compensation | Stock-Based Compensation Shares Available for Issuance As of June 30, 2024 , 13,887,897 and 7,308,767 awards remain available for issuance under the 2021 Plan and the ESPP, respectively. Stock Options The following is a summary of the Company’s stock option activity during the six months ended June 30, 2024: Stock Options (in thousands, except share and per share data) Number of Options Outstanding Weighted-Average Exercise Price Weighted-Average Remaining Contractual Life (Years) Aggregate Intrinsic Value (1) Balances as of January 1, 2024 10,801,396 $ 4.46 5.87 $ 161,603 Exercised (1,289,124) 3.28 19,265 Forfeited (105,947) 6.39 Balances as of June 30, 2024 9,406,325 4.60 5.34 70,750 Vested and exercisable as of June 30, 2024 8,166,741 3.71 5.08 68,668 Vested and expected to vest as of June 30, 2024 9,406,325 $ 4.60 5.34 $ 70,750 _________________ (1) The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying stock options and the estimated fair value of the Company’s common stock. No stock options were granted during the six months ended June 30, 2024 and 2023. The following is a summary of the Company’s stock option activity during the six months ended June 30, 2024 and 2023: Six Months Ended June 30, (in thousands) 2024 2023 Aggregate grant-date fair value of options vested $ 6,293 $ 4,396 Intrinsic value of options exercised 19,265 38,750 Restricted Stock Units Restricted stock unit activity during the six months ended June 30, 2024 was as follows: Number of Shares Weighted-Average Grant-Date Fair Value Per Share Unvested at January 1, 2024 23,555,665 $ 14.67 Granted 8,692,250 17.27 Vested (4,952,458) 13.57 Cancelled/forfeited (2,097,170) 15.22 Unvested at June 30, 2024 25,198,287 $ 15.73 The following is a summary of the Company’s restricted stock unit activity during the six months ended June 30, 2024 and 2023: Six Months Ended June 30, (in thousands, except per share data) 2024 2023 Weighted-average grant date fair value of RSUs granted $ 17.27 $ 16.24 Aggregate grant-date fair value of RSUs vested 67,205 50,380 Employee Stock Purchase Plan (“ESPP”) The offering period that commenced on September 1, 2023 ended on February 29, 2024, due to a decline in the Company’s stock price at the end of the purchase period, triggering a new offering period, as required by the ESPP plan documents. A new 24-month offering period commenced on March 1, 2024. This event, inclusive of the impact of employees who elected to increase their withholding percentages, was accounted for as a modification under GAAP in the first quarter of 2024, whereby the fair value of the ESPP offering was measured immediately before and after modification, resulting in incremental stock-based compensation expense of $1.7 million, which is being recognized over the new offering period, which is deemed to be the requisite service period. A new subsequent 24-month offering period commences on March 1 and September 1 of each fiscal year. The fair value of the ESPP offerings, including those described above, were estimated using the Black-Scholes option-pricing model as of the respective offering dates, using the following assumptions. These assumptions represent the grant date fair value inputs for new offerings which commenced during the six months ended June 30, 2024 and 2023, as well as updated valuation information as of the modification date for any offerings for which a modification occurred during the periods presented herein: Six Months Ended June 30, 2024 2023 Risk-free interest rates 4.49% to 5.20% 4.83% to 5.13% Expected term (in years) 0.5 to 2.0 years 0.5 to 2.0 years Volatility 52.9% to 61.3% 48.9% to 59.5% Dividend rate — % — % Stock-Based Compensation Expense Stock-based compensation expense for stock options, RSUs, and ESPP, included within the Condensed Consolidated Statements of Operations, net of amounts capitalized to internal-use software, as described in Note 5. Property and Equipment , was as follows: Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2024 2023 2024 2023 Customer support and operations $ 259 $ 419 $ 612 $ 624 Marketing 4,521 4,727 8,500 7,710 Technology and development 20,354 18,588 39,981 35,219 General and administrative 12,023 11,466 22,152 20,881 Total $ 37,157 $ 35,200 $ 71,245 $ 64,434 As of June 30, 2024, the total unamortized compensation cost related to all non-vested equity awards, including options and RSUs, was $349.0 million, which will be amortized over a weighted-average remaining requisite service period of approximately 2.7 years. As of June 30, 2024, the total unrecognized compensation expense related to the ESPP was $7.5 million, which is expected to be amortized over the next 1.7 years. |