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Stock-Based Compensation

9 Months Ended

Oct. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Note 8: Stock-Based Compensation

Total stock-based compensation expense recognized in the condensed consolidated statements of operations was as follows (in thousands):

	Three Months Ended				Nine Months Ended
	October 31, 2019		October 31, 2018		October 31, 2019		October 31, 2018
Cost of revenue	$	335	$	243	$	964	$	677
Sales and marketing		511		350		1,480		1,065
Research and development		1,153		970		3,487		2,803
General and administrative		1,255		1,095		3,716		3,189
Total stock-based compensation expense	$	3,254	$	2,658	$	9,647	$	7,734

As of October 31, 2019, there was $25.4 million of unrecognized stock-based compensation expense related to unvested RSUs, stock options and ESPP purchases that will be recognized on a straight-line basis over the remaining weighted-average vesting period of approximately 3 years.

The fair value of employee stock options and ESPP purchases was estimated using the Black–Scholes model with the following assumptions:

Three and Nine Months Ended

October 31,

2019

October 31,

2018

Stock Options:

Expected volatility

44%

43%

Expected term (in years)

6.1

Risk-free interest rate

2.5%

2.7%

Dividend yield

Three and Nine Months Ended

October 31,

2019

October 31,

2018

ESPP:

Expected volatility

40%-51%

39-56%

Expected term (in years)

0.5-2.0

Risk-free interest rate

1.7%-2.5%

2.0-2.8%

Dividend yield