v3.10.0.1

Warrants (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of warrants activity

Warrants outstanding and exercisable are summarized as follows:

	Shares(1)			Weighted Average Exercise Price				Range of Exercise Prices
Outstanding at December 31, 2017	904,470			$	5.27			$2.20-$21.00
Exercised	—			—				—
Expired	(6,920	)		6.25				—
Outstanding at June 30, 2018	897,550			$	5.26			$2.20-$21.00
Exercisable at June 30, 2018	897,550			$	5.26			$2.20-$21.00

(1) Outstanding and exercisable information includes 15,000 equity-classified warrants.

Black Scholes

Schedule of Share Based Payment Award Warrants Valuation Assumptions

The assumptions used in the Black-Scholes option-pricing model to estimate the fair value of the warrant liability as of June 30, 2018 were as follows:

Expected volatility	96.1% - 104.9%
Risk-free interest rate	2.38% - 2.65%
Dividend yield	—
Expected life in years	1.26 - 3.46

Monte Carlo Simulation Model

Schedule of Share Based Payment Award Warrants Valuation Assumptions

The assumptions used in the Monte Carlo simulation model to estimate the fair value of the warrant liability as of June 30, 2018 were as follows:

Expected volatility	13.2% - 101.9%
Risk-free interest rate	0.18% - 2.4%
Dividend yield	—
Expected life in years	0.01 - 1.36

X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of warrants, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Name Accounting Standards Codification
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-Topic 505
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