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Stockholders' Equity (Tables)
9 Months Ended
Sep. 30, 2020
Stockholders Equity Note [Abstract]  
Summary of Stock Option Activity

A summary of stock option activity under each of the Company’s stock option plans during the nine months period ended September 30, 2020:

 

 

 

Stock Options Outstanding

 

 

 

Number of

Shares

 

 

Weighted

Average

Exercise

Price

 

 

Weighted

Average

Remaining

Contractual

Life (in years)

 

 

Aggregate

Intrinsic

Value

 

Outstanding at January 1, 2020

 

 

1,686,444

 

 

$

1.30

 

 

 

4.22

 

 

$

1,535,987

 

Granted

 

 

432,125

 

 

$

2.71

 

 

 

 

 

 

 

 

 

Forfeited / Cancelled

 

 

(38,197

)

 

$

2.51

 

 

 

 

 

 

 

 

 

Exercised

 

 

(744,951

)

 

$

0.87

 

 

 

 

 

 

 

 

 

Outstanding at  September 30, 2020

 

 

1,335,421

 

 

$

1.81

 

 

 

6.66

 

 

$

616,432

 

Exercisable at September 30, 2020

 

 

845,649

 

 

$

1.53

 

 

 

5.01

 

 

$

616,323

 

Vested and expected to vest at September 30, 2020

 

 

1,320,728

 

 

$

1.81

 

 

 

6.63

 

 

$

616,429

 

Schedule of Assumption to Calculate Weighted Average Grant Date Fair Value of Options Grant

The following table presents details of the assumptions used to calculate the weighted-average grant date fair value of common stock options granted by the Company:

 

 

 

For the Nine Months Ended September 30,

 

 

 

2020

 

 

2019

 

Expected term (in years)

 

5.04

 

 

4.65 - 5.87

 

Expected volatility

 

43.5 - 47.80%

 

 

43.7 - 44.4%

 

Risk-free interest rate

 

 

0.33

%

 

2.49 - 2.55%

 

Weighted average grant date fair value per share

 

$

0.83

 

 

$

1.07

 

Grant date fair value of options vested

 

$

545,388

 

 

$

574,524

 

Intrinsic value of options exercised

 

$

917,625

 

 

$

551,134

 

Schedule of Restricted Stock Unit Activity

The Company’s restricted stock unit activity for the nine months ended September 30, 2020 is as follows:

 

 

 

Restricted Stock Units

 

 

 

Number of

Shares

 

 

Weighted

Average Grant

Date Fair Value

 

Unvested at January 1, 2020

 

 

216,670

 

 

$

3.02

 

Granted

 

 

554,251

 

 

$

2.51

 

Vested

 

 

(148,751

)

 

$

3.15

 

Cancelled

 

 

(38,333

)

 

$

2.41

 

Unvested at September 30, 2020

 

 

583,837

 

 

$

2.54

 

Summary of Stock-Based Compensation Expense

Stock-based compensation expense for the three and nine month periods ended September 30, 2020 and 2019 was comprised of the following:

 

 

 

For the Three Months Ended September 30,

 

 

For the Nine Months Ended September 30,

 

Stock-based compensation classified as:

 

2020

 

 

2019

 

 

2020

 

 

2019

 

General and administrative

 

$

171,636

 

 

$

120,188

 

 

$

373,667

 

 

$

357,679

 

Production

 

 

15,118

 

 

 

18,140

 

 

 

50,856

 

 

 

52,131

 

Marketing and selling

 

 

15,696

 

 

 

15,011

 

 

 

50,062

 

 

 

44,472

 

Research and development

 

 

7,830

 

 

 

11,518

 

 

 

28,834

 

 

 

35,858

 

 

 

$

210,280

 

 

$

164,857

 

 

$

503,419

 

 

$

490,140

 

Schedule of Warrant Activity

The following table summarizes the Company’s warrant activity during the nine months ended September 30, 2020:

 

 

 

Number of

Warrants

 

 

Weighted

Average

Exercise Price

 

Warrants outstanding – January 1, 2020

 

 

630,947

 

 

$

4.16

 

Warrants granted

 

 

-

 

 

$

-

 

Warrants exercised

 

 

(78,948

)

 

$

0.76

 

Warrants outstanding – September 30, 2020

 

 

551,999

 

 

$

4.65