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).

 

Common Stock Warrants

 

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

 

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