Stockholders' Equity (Tables)
|
12 Months Ended |
Dec. 31, 2018 |
Stockholders' equity: |
|
Schedule of stock options issued by the Company |
Activity with respect to stock options issued by
the Company is summarized as follows:
|
|
Options Outstanding |
|
Options Exercisable |
|
Range of Exercise Prices |
|
Weighted- average Exercise price per share |
|
Intrinsic Value (1) |
Outstanding at January 1, 2017 |
|
|
337,441 |
|
|
|
|
|
|
$ |
5.00 |
|
|
$ |
385.60 |
|
|
$ |
42.07 |
|
|
|
— |
Exercisable at January 1, 2017 |
|
|
|
|
|
|
245,989 |
|
|
$ |
5.00 |
|
|
$ |
385.60 |
|
|
$ |
38.71 |
|
|
|
— |
Activity during the year ended December 31, 2017 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Granted |
|
|
940,875 |
|
|
|
|
|
|
$ |
1.95 |
|
|
$ |
6.40 |
|
|
$ |
2.58 |
|
|
$ |
78,486 |
Cancelled or forfeited |
|
|
(40,117 |
) |
|
|
|
|
|
$ |
5.00 |
|
|
$ |
385.60 |
|
|
$ |
35.74 |
|
|
|
— |
Outstanding at December 31, 2017 |
|
|
1,238,199 |
|
|
|
|
|
|
$ |
1.95 |
|
|
$ |
385.60 |
|
|
$ |
12.47 |
|
|
$ |
78,486 |
Exercisable at December 31, 2017 |
|
|
|
|
|
|
567,210 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
— |
Activity during the year ended December 31, 2018 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Granted |
|
|
167,500 |
|
|
|
|
|
|
$ |
1.40 |
|
|
$ |
2.18 |
|
|
$ |
1.81 |
|
|
$ |
11,050 |
Cancelled or forfeited |
|
|
(19,303 |
) |
|
|
|
|
|
$ |
1.95 |
|
|
$ |
385.60 |
|
|
$ |
18.77 |
|
|
|
|
Outstanding at December 31, 2018 |
|
|
1,386,396 |
|
|
|
|
|
|
$ |
1.40 |
|
|
$ |
385.60 |
|
|
$ |
11.09 |
|
|
$ |
11,050 |
Exercisable at December 31, 2018 |
|
|
|
|
|
|
1,006,113 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(1) |
Intrinsic value is calculated as the estimated fair value of the Company’s stock at the end of the related period less the option exercise price of in-the-money options. |
|
Schedule of stock options (contractual life expressed in years) |
The following table summarizes information
about stock options at December 31, 2018 (contractual life expressed in years):
|
|
Options Outstanding |
|
Options Exercisable |
Range of Exercise Prices |
|
Number Outstanding |
|
Weighted - Average Remaining Contractual Life |
|
Weighted - Average Exercise Price |
|
Number Exercisable |
|
Weighted - Average Remaining Contractual Life |
|
Weighted - Average Exercise Price |
$ |
1.40 |
|
|
$ |
45.20 |
|
|
|
1,310,489 |
|
|
|
8.36 |
|
|
$ |
7.70 |
|
|
|
930,300 |
|
|
|
8.09 |
|
|
$ |
16.08 |
|
$ |
46.40 |
|
|
$ |
83.60 |
|
|
|
75,771 |
|
|
|
2.88 |
|
|
$ |
69.09 |
|
|
|
75,677 |
|
|
|
2.88 |
|
|
$ |
69.11 |
|
$ |
128.00 |
|
|
$ |
385.60 |
|
|
|
136 |
|
|
|
0.88 |
|
|
$ |
385.60 |
|
|
|
136 |
|
|
|
0.88 |
|
|
$ |
363.21 |
|
|
|
|
|
|
|
|
|
|
1,386,396 |
|
|
|
9.18 |
|
|
$ |
12.47 |
|
|
|
1,006,113 |
|
|
|
7.70 |
|
|
$ |
16.08 |
|
|
Schedule of company's nonvested stock options during the years |
The weighted average grant date
fair value of options granted during the years ended December 31, 2018 and 2017 was $0.95 and $0.85, respectively. A summary of
the status of the Company’s nonvested stock options during the years ended December 31, 2018 and 2017 is presented below:
Nonvested Stock Options |
|
Shares |
|
Weighted - Average Grant Date Fair Value |
Nonvested, January 1, 2017 |
|
|
91,452 |
|
|
$ |
10.53 |
|
Activity during the year ended December 31, 2017 |
|
|
|
|
|
|
|
|
Granted |
|
|
940,875 |
|
|
$ |
0.85 |
|
Forfeited |
|
|
(17,619 |
) |
|
$ |
16.50 |
|
Vested |
|
|
(343,719 |
) |
|
$ |
3.09 |
|
Nonvested, December 31, 2017 |
|
|
670,989 |
|
|
$ |
1.45 |
|
Activity during the year ended December 31, 2018 |
|
|
|
|
|
|
|
|
Granted |
|
|
167,500 |
|
|
$ |
0.95 |
|
Forfeited |
|
|
(15,327 |
) |
|
$ |
25.22 |
|
Vested |
|
|
(442,879 |
) |
|
$ |
1.71 |
|
Nonvested, December 31, 2018 |
|
|
380,283 |
|
|
$ |
0.94 |
|
|
Schedule of share-based compensation expense |
The Company records share-based
compensation expense on a straight-line basis over the related vesting period. For the years ended December 31, 2018 and 2017,
share-based compensation expense was:
Years Ended December 31, |
2018 |
|
2017 |
$ |
1,231,379 |
|
|
$ |
1,245,601 |
|
|
Schedule of assumptions used in calculating the fair value under the Black-Scholes option-pricing model |
The assumptions used in calculating the fair value
under the Black-Scholes option-pricing model are as follows:
|
|
Years Ended December 31, |
|
|
|
2018 |
|
|
2017 |
|
Dividend yield |
|
|
0% |
|
|
|
0% |
|
Expected Volatility |
|
|
51.58% to 54.21% |
|
|
|
51.77% to 52.98% |
|
Risk free Interest rates |
|
|
2.77% to 3.00% |
|
|
|
2.04% to 2.25% |
|
Expected lives (in years) |
|
|
5.8 |
|
|
|
6.0 |
|
|
Schedule of common stock warrant activity |
Warrants have generally been issued in connection
with financing transactions and for terms of up to five years. Common stock warrant activity for the years ended December 31, 2018
and 2017 is as follows:
|
|
Shares |
|
Weighted - Average Exercise Price |
Outstanding at January 1, 2017 |
|
|
1,991,293 |
|
|
$ |
13.00 |
|
Activity during the year ended December 31, 2017 |
|
|
|
|
|
|
|
|
Issued |
|
|
7,134,200 |
|
|
$ |
2.20 |
|
Exercised |
|
|
(8,207 |
) |
|
$ |
2.00 |
|
Terminated |
|
|
(168,208 |
) |
|
$ |
17.64 |
|
Outstanding at December 31, 2017 |
|
|
8,949,078 |
|
|
$ |
4.12 |
(1) |
Activity during the year ended December 31, 2018 |
|
|
|
|
|
|
|
|
Issued |
|
|
— |
|
|
|
— |
|
Exercised |
|
|
(221,773 |
) |
|
$ |
2.15 |
|
Terminated |
|
|
(50,824 |
) |
|
$ |
6.64 |
|
Outstanding at December 31, 2018 |
|
|
8,676,481 |
|
|
$ |
4.17 |
|
|
(1) |
The weighted-average exercise price reflects exercise price adjustments triggered by the 2017 PIPE. |
|
Schedule of information regarding outstanding warrants |
Information regarding outstanding warrants
at December 31, 2018 is as follows (contractual life expressed in years):
Exercise Price
|
|
Number Outstanding |
|
Weighted - Average Remaining Contractual Life |
|
Intrinsic Value (1) |
$ |
1.83 |
|
|
|
1,540 |
|
|
|
1.96 |
|
|
$ |
— |
|
$ |
2.20 |
|
|
|
6,953,848 |
|
|
|
3.40 |
|
|
|
— |
|
$ |
5.50 |
|
|
|
1,123,705 |
|
|
|
2.67 |
|
|
|
— |
|
$ |
16.23 |
|
|
|
242,021 |
|
|
|
1.96 |
|
|
|
— |
|
$ |
21.10 |
|
|
|
152,084 |
|
|
|
1.96 |
|
|
|
— |
|
$ |
34.32 |
|
|
|
185,779 |
|
|
|
0.98 |
|
|
|
— |
|
$ |
40.00 |
|
|
|
875 |
|
|
|
1.07 |
|
|
|
— |
|
$ |
70.00 |
|
|
|
16,629 |
|
|
|
0.23 |
|
|
|
— |
|
|
|
|
|
|
8,676,481 |
|
|
|
3.18 |
|
|
$ |
— |
|
|
(1) |
Intrinsic value is calculated as the estimated fair value of the Company’s stock at December 31, 2018 less the warrant exercise price of in-the-money warrants. |
|