Annual report pursuant to Section 13 and 15(d)

Stock-based Compensation (Tables)

v3.19.3.a.u2
Stock-based Compensation (Tables)
 12 Months Ended
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]  
Summary of Shares Available for Future Grant
The 2014 Plan has since been amended and restated with approval by the stockholders to increase the maximum number of shares issuable, as shown in the table below:
Original share pool
2,058

2015 increase
1,656

June 2017 increase
1,000

December 2017 increase (ratified in June 2018)
4,400

2019 increase
3,500

Total share authorized for grant as of December 31, 2019
12,614

Shares available for future grant under the 2014 Plan was as follows:
 
Shares Available For Grant
Available as of December 31, 2018
1,267

Granted
(4,344
)
Forfeited
938

Expired
437

Share pool increase
3,500

Available as of December 31, 2019
1,798

Summary of Stock Option Activity
The following table summarizes information about stock options outstanding as of December 31, 2019:
 
 
Options Outstanding
 
Options Exercisable
Range of
Exercise
Prices
 
Number of
Shares
 
Weighted-Average
Remaining
Contractual Life
(Years)
 
Weighted
Average
Price
 
Number of
Shares
 
Weighted
Average
Price
$0.49 - $0.61
 
1,768

 
9.7
 
$
0.61

 
64

 
$
0.56

$1.13 - $1.79
 
1,970

 
8.67
 
$
1.54

 
742

 
$
1.59

$1.82 - $2.33
 
1,773

 
8.6
 
$
1.97

 
829

 
$
1.99

$2.68 - $15.33
 
1,900

 
5.46
 
$
5.52

 
1,623

 
$
5.99

 
 
7,411

 
8.08
 
$
2.44

 
3,258

 
$
3.86

A summary of the stock option activity during the year ended December 31, 2019 is presented below:
 
Options
Outstanding
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual
Life (Years)
 
Aggregate
Intrinsic
Value
Outstanding at beginning of year
6,466

 
$
3.05

 
 
 
 
Granted
2,414

 
$
0.85

 
 
 
 
Exercised
(186
)
 
$
1.23

 
 
 
 
Forfeited
(846
)
 
$
2.02

 
 
 
 
Expired
(437
)
 
$
3.94

 
 
 
 
Outstanding at end of year
7,411

 
$
2.44

 
8.08
 
$
—

Vested and expected to vest
7,411

 
$
2.44

 
8.08
 
$
—

Exercisable at year end
3,258

 
$
3.86

 
6.31
 
$
—

Summary of Share Fair Value of Each Stock Option on Date of Grant using Black-Scholes Model Assumptions
The share fair value of each stock option was determined on the date of grant using the Black-Scholes Model under the following assumptions:
 
Years Ended December 31,
 
2019
 
2018
Dividend yield
—
 
—
Risk-free interest rate
1.67% - 2.45%
 
2.68% - 3.0%
Expected term (in years)
6.08
 
5.27-10
Volatility
100%-103%
 
88%-106%
Schedule of Unvested Restricted Stock Units Activity
RSU activity for the year ended December 31, 2019 is summarized below:

 
Number of
Shares
 
 Weighted
Average Grant-
Date Fair Value
Unvested as of January 1, 2019
278

 
$
1.83

Granted
1,763

 
$
0.94

Vested
(621
)
 
$
1.66

Forfeited
(92
)
 
$
1.93

Unvested as of December 31, 2019
1,328

 
$
0.72

Schedule of Stock-based Compensation Expense Related to Stock Options and RSUs Granted to Employees and Non-employees
Stock-based compensation expense related to stock options and RSUs granted to employees and non-employees was as follows:

 
Years Ended December 31,
 
2019
 
2018
Sales and marketing
$
653

 
$
611

Research and development
241

 
426

General and administrative
1,361

 
1,831

 
$
2,255

 
$
2,868