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STOCK OPTIONS, RESTRICTED STOCK AND WARRANTS (Tables)
12 Months Ended
Dec. 31, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Summary of Stock Options Pricing

 

 

 

2016

 

2015

Dividend yield

 

0%

 

0%

Expected volatility

 

87% - 91%

 

84% - 85%

Risk free interest rate

 

1.01% - 1.93%

 

1.18% - 1.81%

Expected life (years)

 

5

 

5

 

Summary of Stock Option Activity

A summary of stock option activity is as follows:

 

 

 

Common stock options

 

 

Weighted average

exercise price

 

 

Aggregate intrinsic value

 

 

Weighted-average remaining contractual term (years)

 

Outstanding – December 31, 2015

 

 

1,056,250

 

 

$

0.28

 

 

$

316,875

 

 

 

4.08

 

Issued

 

 

540,000

 

 

 

0.38

 

 

 

 

 

 

 

Exercised

 

 

 

 

 

 

 

 

 

 

 

 

Expired

 

 

(100,000

)

 

 

0.20

 

 

 

 

 

 

 

Outstanding – December 31, 2016

 

 

1,496,250

 

 

$

0.32

 

 

$

385,017

 

 

 

3.57

 

Exercisable – December 31, 2016

 

 

1,367,361

 

 

$

0.32

 

 

$

354,083

 

 

 

3.53

 

 

Summary of Unvested Stock Option Activity

 

A summary of unvested stock option activity is as follows:

 

 

 

Common stock options

 

 

Weighted average

exercise price

 

 

Aggregate intrinsic value

 

 

Weighted-average remaining contractual term (years)

 

Unvested – December 31, 2015

 

 

250,000

 

 

$

0.26

 

 

$

81,000

 

 

 

4.58

 

Granted

 

 

540,000

 

 

 

0.38

 

 

 

 

 

 

 

Vested

 

 

(561,111

)

 

 

0.37

 

 

 

 

 

 

 

Forfeited or expired

 

 

(100,000

)

 

 

0.20

 

 

 

 

 

 

 

Unvested – December 31, 2016

 

 

128,889

 

 

$

0.34

 

 

$

30,933

 

 

 

3.99

 

 

Summary of Warrant Activity

A summary of warrant activity is as follows:

 

 

 

Common stock warrants

 

 

Weighted average exercise price

 

Outstanding – December 31, 2015

 

 

 

 

$

 

Issued

 

 

1,965,780

 

 

 

0.30

 

Exercised

 

 

 

 

 

 

Expired

 

 

 

 

 

 

Outstanding – December 31, 2016

 

 

1,965,780

 

 

$

0.30

 

Exercisable – December 31, 2016

 

 

 

 

$