v3.21.2
Stockholders’ Equity and Equity Incentive Plans
 6 Months Ended
Jul. 31, 2021
Stockholders' Equity Note [Abstract]  
Stockholders’ Equity and Equity Incentive Plans Stockholders’ Equity and Equity Incentive Plans
Common Stock
In connection with our initial public offering (“IPO”) in April 2019, our amended and restated certificate of incorporation became effective, which authorized the issuance of 2,000,000,000 shares of Class A common stock, $0.001 par value per share, and 300,000,000 shares of Class B common stock, $0.001 par value per share. Class A and Class B common stock are referred to as common stock throughout the notes to the condensed consolidated financial statements, unless otherwise noted.
Equity Incentive Plans
We have two equity incentive plans: the 2011 Global Share Plan (“2011 Plan”) and the 2019 Equity Incentive Plan (“2019 Plan”). All shares that remain available for future grants are under the 2019 Plan.
Stock Options
A summary of stock option activity under our equity incentive plan and related information is as follows:
 Stock Options
Outstanding
Stock
Options		Weighted-
Average
Exercise
Price		Weighted-
Average
Remaining
Contractual
Life (Years)		Aggregate
Intrinsic
Value
(in thousands, except share, life, and per share data)
Balance as of January 31, 20219,239,504 $7.17 7.0$3,371,457 
Granted— $— 
Exercised(1,593,193)$5.03 
Canceled/forfeited/expired(95,621)$10.63 
Balance as of July 31, 20217,550,690 $7.58 6.5$2,797,668 
Vested and exercisable as of July 31, 20214,851,663 $4.69 6.2$1,811,636 
As of July 31, 2021, unrecognized stock-based compensation expense related to outstanding unvested stock options was $32.7 million, which is expected to be recognized over a weighted-average period of 1.1 years.
Restricted Stock Units
A summary of RSU activity under our equity incentive plan and related information is as follows:
RSUs
Unvested
RSUs		Weighted-
Average
Grant Date Fair Value Per Share
Unvested as of January 31, 20214,510,730 $194.57 
Granted893,277 $347.05 
Vested(1,182,958)$180.43 
Canceled/forfeited(129,309)$245.34 
Unvested as of July 31, 20214,091,740 $230.34 
As of July 31, 2021, unrecognized stock-based compensation expense related to outstanding unvested RSUs was $859.6 million, which is expected to be recognized over a weighted-average period of 2.6 years.
2019 Employee Stock Purchase Plan
In April 2019, we adopted the 2019 Employee Stock Purchase Plan (“ESPP”). As of July 31, 2021, unrecognized stock-based compensation expense related to the ESPP was $61.8 million, which is expected to be recognized over a weighted-average period of 1.9 years.
Stock-Based Compensation
The stock-based compensation expense by line item in the accompanying condensed consolidated statements of operations is summarized as follows:
Three Months Ended July 31, Six Months Ended July 31,
2021202020212020
(in thousands)
Cost of revenue$14,778 $7,727 $28,844 $10,976 
Research and development22,917 10,010 43,736 15,234 
Sales and marketing50,856 32,398 102,668 49,521 
General and administrative13,591 6,720 25,863 9,901 
Total stock-based compensation expense$102,142 $56,855 $201,111 $85,632