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Stock-Based Compensation (Tables)
9 Months Ended
Oct. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Total Stock-Based Compensation Expense Recognized in Condensed Consolidated Statements of Operations

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

 

 

Summary of Assumptions Used to Estimate Fair Value of Employee Stock Options Grants and Employee Stock Purchase Plan Using Black-Scholes Option Pricing Model

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

 

 

6.1

 

Risk-free interest rate

 

 

 

 

 

2.5%

 

 

2.7%

 

Dividend yield

 

 

 

 

 

NA

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

0.5-2.0

 

Risk-free interest rate

 

 

 

 

 

1.7%-2.5%

 

 

2.0-2.8%

 

Dividend yield

 

 

 

 

 

NA

 

 

NA