Note 9

Warrants:

The Company accounts for warrants that require net cash settlement upon change of control of the Company as liabilities instead of equity. During the three and six months ended June 30, 2019, warrants to purchase 137,143 and 265,947 shares of common stock each with an exercise price of $3.75 per share were accounted for as derivatives. These warrants expired on February 5, 2019 and April 30, 2019, respectively. These derivatives had deminimus fair values as of December 31, 2018. There was no change in fair value of these derivatives for the three and six months ended June 30, 2019.

Outstanding common stock warrants at June 30, 2019 consist of the following:

Issue Date	Expiration Date	Total Warrants		Exercise Price
July 24, 2014	July 24, 2019		1,239,769	$	3.75 - $ 12.25
June 22, 2015	June 22, 2020		600,000	$	3.75
December 30, 2015	December 30, 2020		130,089	$	5.65
January 29, 2016	January 29, 2021		19,812	$	5.30
			1,989,670