Summary of Significant Accounting Policies (Tables)
|
3 Months Ended |
Mar. 31, 2017 |
Accounting Policies [Abstract] |
|
Summary of Customer Concentration Risk Percentage |
The following table illustrates
the level of concentration as a percentage of total revenues during the three months ended March 31, 2017 and 2016.
|
|
For the Three Months Ended |
|
|
|
March 31, |
|
|
|
2017 |
|
|
2016 |
|
Top Five Customers |
|
|
61 |
% |
|
|
46 |
% |
Federal Agencies |
|
|
5 |
% |
|
|
11 |
% |
The following table illustrates
the level of concentration as a percentage of net accounts receivable balance as of March 31, 2017 and December 31, 2016:
|
|
March 31, 2017 |
|
|
December, 31, 2016 |
|
Top Five Customers |
|
|
66 |
% |
|
|
82 |
% |
Federal Agencies |
|
|
1 |
% |
|
|
1 |
% |
|
Summary of Computation of Loss per Share |
The following table illustrates
our computation of loss per share for the three months ended March 31, 2017 and 2016:
|
|
For the Three Months Ended |
|
|
|
March 31, |
|
|
|
2017 |
|
|
2016 |
|
Numerator: |
|
|
|
|
|
|
Net loss |
|
$ |
(5,594,515 |
) |
|
$ |
(5,950,391 |
) |
|
|
|
|
|
|
|
|
|
Denominator for basic and diluted loss per share: |
|
|
|
|
|
|
|
|
Weighted average common stock shares outstanding |
|
|
31,223,061 |
|
|
|
23,198,360 |
|
|
|
|
|
|
|
|
|
|
Loss per common share - basic and diluted |
|
$ |
(0.18 |
) |
|
$ |
(0.26 |
) |
|
Summary of Anti-dilutive Securities Excluded from Computation of Earnings per Share |
The following table presents
securities that could potentially dilute basic loss per share in the future. For all periods presented, the potentially dilutive
securities were not included in the computation of diluted loss per share because these securities would have been anti-dilutive
to our net loss. The Series D Convertible Preferred Stock, Series G Convertible Preferred Stock, Series H Convertible Preferred
Stock, Series J Convertible Preferred Stock and Series K Convertible Preferred Stock are presented below as if they were converted
into common shares according to the conversion terms.
|
|
For the Three Months Ended |
|
|
|
March 31, |
|
|
|
2017 |
|
|
2016 |
|
Stock options |
|
|
7,814,250 |
|
|
|
5,460,250 |
|
Convertible debt |
|
|
26,067,288 |
|
|
|
25,226,800 |
|
Common stock warrants |
|
|
25,399,195 |
|
|
|
26,998,401 |
|
Convertible preferred stock: |
|
|
|
|
|
|
|
|
Series D Convertible Preferred Stock |
|
|
750,000 |
|
|
|
750,000 |
|
Series G Convertible Preferred Stock |
|
|
865,700 |
|
|
|
865,700 |
|
Series H Convertible Preferred Stock |
|
|
1,000,000 |
|
|
|
1,000,000 |
|
Series H2 Convertible Preferred Stock |
|
|
2,100,000 |
|
|
|
2,100,000 |
|
Series J Convertible Preferred Stock |
|
|
3,521,000 |
|
|
|
3,546,000 |
|
Series K Convertible Preferred Stock |
|
|
6,816,000 |
|
|
|
11,416,000 |
|
|
|
|
74,333,433 |
|
|
|
77,363,151 |
|
|
Summary of Stock Based Compensation Expense |
The following table summarizes
the effect of this stock-based compensation expense within each of the line items of our costs and expenses within our Consolidated
Statements of Operations:
|
|
For the Three Months Ended
March 31,
|
|
|
|
2017 |
|
|
2016 |
|
Research and development |
|
$ |
15,970 |
|
|
$ |
20,381 |
|
Selling and marketing |
|
|
10,886 |
|
|
|
12,690 |
|
General and administrative |
|
|
47,673 |
|
|
|
68,391 |
|
Total stock-based compensation expense |
|
$ |
74,529 |
|
|
$ |
101,462 |
|
|
Schedule of Liabilities Measured at Fair Value on Recurring Basis |
The following tables set
forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis as of March
31, 2017:
|
|
|
|
|
Fair value measurements at March 31, 2017 using: |
|
|
|
March 31, 2017 |
|
|
Quoted
prices in
active
markets
(Level 1)
|
|
|
Significant
other
observable
inputs
(Level 2)
|
|
|
Significant
unobservable
inputs
(Level 3)
|
|
Available-For-Sale Equity Securities |
|
|
19,796 |
|
|
|
19,796 |
|
|
|
- |
|
|
|
- |
|
Total Financial Assets |
|
$ |
19,796 |
|
|
$ |
19,796 |
|
|
$ |
- |
|
|
$ |
- |
|
|
|
March 31, 2017 |
|
|
Quoted
prices in
active
markets
(Level 1)
|
|
|
Significant
other
observable
inputs
(Level 2)
|
|
|
Significant
unobservable
inputs
(Level 3)
|
|
Series D Preferred Stock Purchase Warrants |
|
$ |
89,280 |
|
|
|
- |
|
|
|
- |
|
|
$ |
89,280 |
|
Warrants Issued with Convertible Debt |
|
|
2,929,235 |
|
|
|
- |
|
|
|
- |
|
|
|
2,929,235 |
|
Conversion Option Derivative Liabilities |
|
|
2,679,404 |
|
|
|
- |
|
|
|
- |
|
|
|
2,679,404 |
|
Total Derivatives |
|
$ |
5,697,919 |
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
5,697,919 |
|
The following table provides
a summary of the changes in fair value, including net transfers in and/or out, of the derivative financial instruments, measured
at fair value on a recurring basis using significant unobservable inputs for the three months ended March 31, 2017:
|
|
December 31, 2016 |
|
|
Issuance
fair value
|
|
|
Change in
fair value
|
|
|
March 31, 2017 |
|
Series D Preferred Stock Purchase Warrants |
|
$ |
23,313 |
|
|
$ |
- |
|
|
$ |
65,967 |
|
|
$ |
89,280 |
|
Warrants Issued with Convertible Debt |
|
|
1,661,795 |
|
|
|
- |
|
|
|
1,267,440 |
|
|
|
2,929,235 |
|
Conversion Option Derivative Liabilities |
|
|
951,059 |
|
|
|
- |
|
|
|
1,728,345 |
|
|
|
2,679,404 |
|
Total Derivatives |
|
$ |
2,636,167 |
|
|
$ |
- |
|
|
$ |
3,061,752 |
|
|
$ |
5,697,919 |
|
The following tables set
forth the Company’s financial assets and liabilities that were accounted for at fair value on a recurring basis as of December
31, 2016:
|
|
|
|
|
Fair value measurements at December 31, 2016 using: |
|
|
|
December 31, 2016 |
|
|
Quoted prices in
active markets
(Level 1)
|
|
|
Significant other
observable inputs
(Level 2)
|
|
|
Significant
unobservable
inputs
(Level 3)
|
|
Available-For-Sale Equity Securities |
|
|
25,865 |
|
|
|
25,865 |
|
|
|
- |
|
|
|
- |
|
Total Financial Assets |
|
$ |
25,865 |
|
|
$ |
25,865 |
|
|
$ |
- |
|
|
$ |
- |
|
|
|
December 31, 2016 |
|
|
Quoted prices in
active markets
(Level 1)
|
|
|
Significant other
observable inputs
(Level 2)
|
|
|
Significant
unobservable
inputs
(Level 3)
|
|
Series D Preferred Stock Purchase Warrants |
|
$ |
23,313 |
|
|
|
- |
|
|
|
- |
|
|
$ |
23,313 |
|
Warrants Issued with Convertible Debt |
|
|
1,661,795 |
|
|
|
- |
|
|
|
- |
|
|
|
1,661,795 |
|
Conversion Option Derivative Liabilities |
|
|
951,059 |
|
|
|
- |
|
|
|
- |
|
|
|
951,059 |
|
Total Derivatives |
|
$ |
2,636,167 |
|
|
$ |
- |
|
|
$ |
- |
|
|
$ |
2,636,167 |
|
|
Schedule of Fair Value Assumptions |
The assumptions for the
binomial pricing model are represented in the table below for the warrants issued in the Series D private placement reflected on
a per share common stock equivalent basis.
Assumptions |
|
November 10, 2011 |
|
|
Warrants
revalued at
December 31, 2016
|
|
|
Warrants
revalued at
March 31, 2017
|
|
Expected life (in months) |
|
|
60.0 |
|
|
|
5.0 |
|
|
|
1.2 |
|
Expected volatility |
|
|
104.5 |
% |
|
|
83.5 |
% |
|
|
98.3 |
% |
Risk-free interest rate |
|
|
0.875 |
% |
|
|
0.62 |
% |
|
|
0.74 |
% |
Exercise price |
|
$ |
0.81 |
|
|
$ |
0.25 |
|
|
$ |
0.25 |
|
Fair value per warrant |
|
$ |
0.54 |
|
|
$ |
0.02 |
|
|
$ |
0.08 |
|
The assumptions for the
binomial pricing model are represented in the table below for the warrants issued with the Convertible Debt throughout the period
reflected on a per share common stock equivalent basis.
Assumptions |
|
At
Issuance
Fair value
|
|
|
Warrants
revalued
at
December 31, 2016
|
|
|
Warrants revalued
at
March 31, 2017
|
|
Expected life (in months) |
|
|
60.0 |
|
|
|
43.0-51.0 |
|
|
|
40.0-48.0 |
|
Expected volatility |
|
|
118.3-120.1 % |
|
|
|
110.0-116.0 % |
|
|
|
106.0-110.0 % |
|
Risk-free interest rate |
|
|
1.48-1.69 % |
|
|
|
1.93 |
% |
|
|
1.50 |
% |
Exercise price |
|
$ |
0.40 |
|
|
$ |
0.40 |
|
|
$ |
0.40 |
|
Fair value per warrant |
|
|
$ 0.19-$0.21 |
|
|
|
$ 0.12-0.14 |
|
|
|
$ 0.21-0.23 |
|
The assumptions for the
binomial pricing model are represented in the table below for the conversion options reflected on a per share common stock equivalent
basis.
Assumptions |
|
At Issuance
fair value
|
|
|
At Settlement
fair value
|
|
|
Conversion
options
revalued at
December 31, 2016
|
|
|
Conversion
options
revalued at
March 31, 2017
|
|
Expected life (in months) |
|
|
6.0-24.0 |
|
|
|
0-18.0 |
|
|
|
6.0-15.0 |
|
|
|
4.0-12.0 |
|
Expected volatility |
|
|
104.2-153.8 |
% |
|
|
86.9%-142.2 |
% |
|
|
84.4-94.8 |
% |
|
|
90.2-109.3 |
% |
Risk-free interest rate |
|
|
0.05-0.99 |
% |
|
|
0.01-0.72 |
% |
|
|
0.62-0.85 |
% |
|
|
0.91-1.03 |
% |
Exercise price |
|
$ |
0.10-$0.35 |
|
|
$ |
0.10-$0.25 |
|
|
$ |
0.28 |
|
|
$ |
0.28 |
|
Fair value per conversion option |
|
$ |
0.09-$0.28 |
|
|
$ |
0.07-$0.26 |
|
|
$ |
0.03-$0.06 |
|
|
$ |
0.10-$0.13 |
|
|