8. Capital Structure

 

Initial Public Offering

 

On October 20, 2015, the Company closed an IPO of its units. Each unit consisted of one share of common stock, one Class A warrant to purchase one share of common stock at an exercise price of $4.55 per share and one Class B warrant to purchase one-half share of common stock at an exercise price of $3.90 per full share (the “units”). The Class A warrants expire on October 20, 2018 and the Class B warrants expire on April 20, 2017. The closing of the IPO resulted in the sale of 4,000,000 units at an initial public offering price of $6.50 per unit for gross proceeds of $26.0 million. The net proceeds of the IPO, after underwriting discounts, commissions and expenses, and before offering expenses, to the Company were approximately $23.6 million. On November 13, 2015, the units separated into common stock, Class A warrants and Class B warrants and began trading separately on the NASDAQ Capital Market.

 

On November 23, 2015, the underwriter of the IPO exercised its over-allotment option for 20,000 shares of common stock, 551,900 Class A warrants to purchase one share of common stock and 551,900 Class B warrants to purchase one-half share of common stock for additional gross proceeds of $135,319.

 

The common stock and accompanying Class A warrants and Class B warrants have been classified to stockholders’ equity in the Company’s balance sheet.

 

Underwriter’s Unit Purchase Option

 

The underwriter of the IPO received, for $100 in the aggregate, a unit purchase option (the “UPO”) to purchase up to a total of 40,000 units (or 1% of the units sold in the IPO) exercisable at $7.48 per unit (or 115% of the public offering price per unit in the IPO). The units underlying the UPO will be, immediately upon exercise, separated into shares of common stock, underwriters’ Class A warrants and underwriters’ Class B warrants (such warrants together referred to as the “Underwriters’ Warrants”) such that, upon exercise, the holder of a UPO will not receive actual units but will instead receive the shares of common stock and Underwriters’ Warrants, to the extent that any portion of the Underwriters’ Warrants underlying such units have not otherwise expired. The exercise prices of the underwriters’ Class A warrants and underwriter’s Class B warrants underlying the UPO are $5.23 and $4.49, respectively. The UPO may be exercised for cash or on a cashless basis, at the holder’s option, and expires on October 14, 2020; provided, that, following the expiration of underwriters’ Class B warrants on April 20, 2017, the UPO will be exercisable only for shares of common stock and underwriters’ Class A warrants at an exercise price of $7.475 per unit; provided further, that, following the expiration of underwriters’ Class A warrants on October 20, 2018, the UPO will be exercisable only for shares of common stock at an exercise price of $7.47. The Company classified the UPO as a liability as it is a freestanding marked-to-market derivative instrument that is precluded from being classified in stockholders’ equity. The fair value of the UPO is re-measured each reporting period and the change in fair value is recognized in the statement of operations (see Note 4).

 

The Aspire Capital Transaction

 

On September 8, 2016, the Company entered into a common stock purchase agreement (the “Purchase Agreement”) with Aspire Capital, pursuant to which Aspire Capital committed to purchase up to an aggregate of $15.0 million of shares of the Company’s common stock over the 30-month term of the Purchase Agreement. Under the Purchase Agreement, on any trading day selected by the Company on which the closing price of the Company’s common stock exceeds $0.50, the Company may, in its sole discretion, present a purchase notice directing Aspire Capital to purchase up to 50,000 shares of common stock per day, up to $15.0 million of the Company’s common stock in the aggregate at a per share price calculated by references to the prevailing market price of the Company’s common stock. Upon execution of the Purchase Agreement, the Company issued and sold to Aspire Capital 250,000 shares of common stock at a price per share of $4.00, for gross proceeds of $1.0 million, and concurrently entered into a registration rights agreement with Aspire Capital registering the shares of the Company’s common stock that have been and may be issued to Aspire Capital under the Purchase Agreement. Additionally, as consideration for Aspire Capital entering into the Purchase Agreement, the Company issued 175,000 shares of common stock as a commitment fee. The net proceeds of the Aspire Capital transaction, after offering expenses, to the Company were approximately $900,000 for the three and nine months ended September 30, 2016. As of September 30, 2016, the Company had sold 250,000 shares of common stock to Aspire Capital under the Purchase Agreement. Subsequent to September 30, 2016, the Company sold an additional 188,998 shares of common stock to Aspire Capital under the terms of the Purchase Agreement for gross proceeds of approximately $700,000. As of the date of this filing, the Company may issue to Aspire Capital under the Purchase Agreement 1,115,165 shares of common stock.

 

Common Stock Warrants

 

At September 30, 2016, the following common stock purchase warrants were outstanding:

 

*Accounted for as a liability instrument (see Note 4)