v3.21.2
Stockholders’ Equity and Equity Incentive Plans (Tables)
 6 Months Ended
Jul. 31, 2021
Stockholders' Equity Note [Abstract]  
Summary of Stock Option Activity Under Equity Incentive Plan
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 
Summary of Restricted Stock Units (RSUs) Activity Under Equity Incentive Plan
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 
Summary of Stock-based Compensation Expense by Line Item
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