Stock-Based Compensation | Note 11. Stock-Based Compensation Employee Equity Plans In January 2015, our Board of Directors adopted the 2015 Plan, which became effective prior to the completion of our initial public offering (IPO). Awards granted under the 2015 Plan may be (i) incentive stock options, (ii) nonstatutory stock options, (iii) restricted stock units, (iv) restricted stock awards or (v) stock appreciation rights, as determined by our Board of Directors at the time of grant. Generally, our restricted stock units vest over four years and, (a) for employee new hire restricted stock unit grants, twenty-five percent vest one year from the vesting commencement date and continue to vest 1/16th per quarter thereafter; or (b) for employee refresh restricted stock unit grants, 1/16 th per quarter vest from the vesting commencement date . As of January 31, 2024, 33,235,411 shares were reserved for future issuance under the 2015 Plan. In January 2015, our Board of Directors adopted the 2015 ESPP, which became effective prior to the completion of our IPO. The 2015 ESPP allows eligible employees to purchase shares of our Class A common stock at a discount of up to 15 % through payroll deductions of their eligible compensation, subject to any plan limitations. The 2015 ESPP provides for 24-month offering periods beginning March 16 and September 16 of each year, and each offering period consists of four six-month purchase periods. On each purchase date, eligible employees may purchase our stock at a price per share equal to 85 % of the lesser of (1) the fair market value of our stock on the offering date or (2) the fair market value of our stock on the purchase date. In the event the price is lower on the last day of any purchase price period, in addition to using that price as the basis for that purchase period, the offering period resets and the new lower price becomes the new offering price for a new 24 month offering period. As of January 31, 2024 , 4,036,633 shares were reserved for future issuance under the 2015 ESPP. Stock Options The following table summarizes the stock option activity under the equity incentive plans and related information: Shares Subject to Options Outstanding Weighted- Weighted- Remaining Average Exercise Contractual Life Aggregate Shares Price (Years) Intrinsic Value (in thousands) Balance as of January 31, 2022 5,726,893 $ 11.74 3.04 $ 82,481 Options granted — — Options exercised ( 2,703,830 ) 4.78 Options forfeited/cancelled ( 650,000 ) 20.28 Balance as of January 31, 2023 2,373,063 17.32 3.81 34,820 Options granted — — Options exercised ( 89,520 ) 7.75 Options forfeited/cancelled — — Balance as of January 31, 2024 2,283,543 $ 17.69 2.93 $ 18,975 Exercisable as of January 31, 2024 2,283,543 $ 17.69 2.93 $ 18,975 Shares Subject to Options Outstanding Weighted-Average Weighted-Remaining Average Exercise Contractual Life Aggregate Shares Price (Years) Intrinsic Value (in thousands) Balance as of January 31, 2019 Options granted Option exercised Options forfeited/cancelled Balance as of January 31, 2020 Options granted Option exercised Options forfeited/cancelled Balance as of January 31, 2021 Vested and expected to vest as of January 31, 2021 Exercisable as of January 31, 2021 9,096,961 $9.01 4.97 $ 108,731 577,082 19.89 (659,34) 9.05 (242,110) 17.63 8,772,585 $ 9.48 4.27 $ 60,221 31,666 12.48 (1,994,667) 5.14 (192,547) 10.73 6,617,037 $ 10.773.77 $ 48,098 6,554,892 $ 10.68 3.74 $ 48,092 5,348,780 $ 8.59 2.87 $ 47,974 The aggregate intrinsic value of options vested and expected to vest and exercisable as of January 31, 2024 is calculated based on the difference between the exercise price and the current fair value of our common stock. The aggregate intrinsic value of exercised options for the years ended January 31, 2024, 2023 and 2022 was $ 1.6 million, $ 60.0 million and $ 17.9 million, respectively. The aggregate estimated fair value of stock options granted to employees that vested during the years ended January 31, 2024, 2023 and 2022 was no t material. There were no options granted to employees during the years ended January 31, 2024, 2023 and 2022. Restricted Stock Units The following table summarizes the restricted stock unit activity under the equity incentive plans and related information: Number of Weighted- Restricted Average Stock Units Grant Date Outstanding Fair Value Unvested balance - January 31, 2022 14,840,913 $ 21.35 Granted 9,766,906 28.09 Vested ( 7,890,038 ) 22.70 Forfeited/cancelled ( 2,052,028 ) 22.95 Unvested balance - January 31, 2023 14,665,753 24.89 Granted 8,966,588 26.34 Vested ( 8,069,193 ) 24.09 Forfeited/cancelled ( 1,483,553 ) 25.84 Unvested balance - January 31, 2024 14,079,595 $ 26.17 er of Weighted- Restricted Average Stock Units Grant Date Outstanding Fair Value Unvested balance - January 31, 2019 18,098,707 $ 19.35 Granted 12,436,586 18.81 Vested, net of shares withheld for employee payroll taxes (4,166,907 ) 19.92 Forfeited/cancelled (4,560,279 ) 19.77 Unvested balance - January 31, 2020 21,808,107 $ 18.85 Granted 10,702,574 15.82 Vested, net of shares withheld for employee payroll taxes (5,100,239 ) 18.28 Forfeited/cancelled (13,079,764 ) 17.87 Unvested balance - January 31, 2021 14,330,678 $ 17.68 As of January 31, 2024 , there was $ 342.5 million of unrecognized stock-based compensation expense related to outstanding restricted stock units granted to employees that is expected to be recognized over a weighted-average period of 2.5 years. Performance-Based Restricted Stock Units We use performance-based incentives for certain employees, including our named executive officers, to achieve our annual financial and operational objectives, while making progress towards our longer-term strategic and growth goals. Based on a review of our actual achievement of the pre-established corporate financial objectives and additional inputs from our Compensation Committee, the executive bonus plan for fiscal year 2023 was determined, settled and paid out in the first quarter of fiscal year 2024 in the form of cash and fully vested restricted stock units. During the first quarter of fiscal year 2024, our Compensation Committee also adopted and approved the performance criteria and targets for the executive bonus plan for fiscal year 2024, which is expected to be paid out in the form of cash and fully vested restricted stock units in the first quarter of fiscal year 2025. During the years ended January 31, 2024 and 2023 , we recognized stock-based compensation expense related to the executive bonus plans in the amount of $ 6.2 million and $ 14.9 million, respectively. The unrecognized compensation expense related to the ungranted and unvested executive bonus plan for fiscal year 2024 is $ 1.0 million, based on the expected performance against the pre-established corporate financial objectives as of January 31, 2024, which is expected to be recognized during the first quarter of fiscal year 2025. 2015 ESPP As of January 31, 2024, there was $ 13.9 million of unrecognized stock-based compensation expense related to the 2015 ESPP that is expected to be recognized over a weighted-average period of 1.35 years. Stock-Based Compensation The following table summarizes the components of stock-based compensation expense recognized in the consolidated statements of operations (in thousands): Year Ended January 31, 2024 2023 2022 Cost of revenue $ 19,111 $ 17,816 $ 20,093 Research and development 70,240 68,900 68,063 Sales and marketing 65,886 58,448 52,547 General and administrative 43,546 40,468 38,271 Total stock-based compensation $ 198,783 $ 185,632 $ 178,974 Year Ended January 31, 2021 2020 2019 Cost of revenue $ 18,936 $ 16,769 $ 14,065 Research and development 61,145 62,565 45,189 Sales and marketing 42,015 38,030 36,864 General and administrative 32,196 28,624 23,178 Total stock-based compensation $ 154,292 $ 145,988 $ 119,296 Determination of Fair Value We estimated the fair value of 2015 ESPP purchase rights using a Black-Scholes option pricing model with the following assumptions: Year Ended January 31, 2024 2023 2022 Employee Stock Purchase Plan Expected term (in years) 0.5 – 2.0 0.5 – 2.0 0.5 – 2.0 Risk-free interest rate 4.1 % – 5.5 % 0.9 % – 4.0 % 0.1 % – 0.2 % Volatility 27 % – 40 % 33 % – 44 % 36 % – 52 % Dividend yield 0 % 0 % 0 % Year Ended January 31, 2021 2020 2019 Employee Stock Options Expected term (in years) 5.8 5.5 – 5.8 5.5 – 5.8 Risk-free interest rate 0.6% 1.8% 2.8% – 3.1% Volatility 46% 45% 45% Dividend yield 0% 0% 0% Employee Stock Purchase Plan Expected term (in years) 0.5 – 2.0 0.5 – 2.0 0.5 – 2.0 Risk-free interest rate 0.1% – 0.4% 1.7% – 2.5% 2.0% – 2.8% Volatility 44% – 54% 34% – 55% 37% – 50% Dividend yield 0% 0% 0% The assumptions used in the Black-Scholes option pricing model were determined as follows: Fair Value of Common Stock. We use the market closing price for our Class A common stock as reported on the New York Stock Exchange to determine the fair value of our common stock at each grant date. Expected Term . The expected term represents the period that our share-based awards are expected to be outstanding. The expected term assumptions were determined based on the vesting terms, exercise terms and contractual lives of the options and 2015 ESPP purchase rights. Expected Volatility . We estimate the expected volatility of the stock option grants and 2015 ESPP purchase rights based on the historical volatility of our Class A common stock over a period equivalent to the expected term of the stock option grants and 2015 ESPP purchase rights, respectively. Risk-free Interest Rate . The risk-free rate that we use is based on the implied yield available on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term on the options and 2015 ESPP purchase rights. Dividend Yield . We have never declared or paid any cash dividends on our Class A common stock and do not plan to pay cash dividends on our Class A common stock in the foreseeable future, and, therefore, use an expected dividend yield of zero . |