Quarterly report pursuant to Section 13 or 15(d)

Equity Incentive Plan (Tables)

v3.10.0.1
Equity Incentive Plan (Tables)
 6 Months Ended
Jun. 30, 2018
Share Based Compensation Option And Incentive Plan [Abstract]  
Share-based Compensation, Stock Options, Activity [Table Text Block]
The following is a summary of stock option activity for the six months ended June 30, 2018: 
 
 
 
Number of 
Options
 
 
Weighted- Average
Exercise Price
 
 
Weighted-Average
Contractual Life 
(In Years)
 
Outstanding at December 31, 2017
 
 
1,893,003
 
 
$
2.49
 
 
 
5.40
 
Granted
 
 
275,500
 
 
 
0.57
 
 
 
9.65
 
Forfeited
 
 
(1,500
)
 
 
0.83
 
 
 
 
 
Expired
 
 
(60,968
)
 
 
0.80
 
 
 
 
 
Outstanding at June 30, 2018
 
 
2,106,035
 
 
$
2.29
 
 
 
4.66
 
Exercisable at June 30, 2018
 
 
1,429,484
 
 
$
2.65
 
 
 
3.95
 
Vested and Expected to Vest at June 30, 2018
 
 
1,429,484
 
 
$
2.65
 
 
 
3.95
 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
For the six months ended June 30, 2018 and 2017, the fair value of each option grant has been estimated on the date of grant using the Black-Scholes Option Pricing Model with the following weighted-average assumptions:
 
 
 
 
2018
 
2017
Risk-Free Interest Rate
 
1.82%
 
1.82%
Expected Life
 
7.00 years
 
7.29 years
Expected Volatility
 
159%
 
172%
Expected Dividend Yield
 
0%
 
0%
Employee and Non Employee Service Share Based Compensation Allocation off Recognized Period Costs [Table Text Block]
The total stock-based compensation expense for employees and non-employees is included in the accompanying Condensed Consolidated Statements of Operations and as follows: 
 
 
 
Three Months Ended
June 30,
 
 
Six Months Ended
June 30,
 
 
 
2018
 
 
2017
 
 
2018
 
 
2017
 
Research and Development
 
$
49,897
 
 
$
62,242
 
 
$
106,975
 
 
$
107,994
 
General and Administrative
 
 
95,412
 
 
 
172,998
 
 
 
183,881
 
 
 
404,147
 
 
 
$
145,309
 
 
$
235,240
 
 
$
290,856
 
 
$
512,141