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Note 10 - Sales of Unregistered Securities | 12 Months Ended
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Dec. 31, 2018
Notes to Financial Statements |
Restricted Stock Shares Activity [Text Block] |
( 10 ) | Sales of Unregistered Securities
On December 24, 2018, the Company entered into a Securities Purchase Agreement (the “Securities Purchase Agreement”) with entities affiliated with its existing investors (the “Investors”), relating to an offering and sale (the “Offering”) of an aggregate of 5,333,332 shares of the Company’s common stock at a purchase price of $0.75 per share, and warrants to purchase up to one -half of the number of shares of common stock sold to an Investor, up to an aggregate for all Investors of 2,666,666 shares of Common Stock (the “Warrant Shares”) at an exercise price of $0.75 per share, for aggregate net proceeds of $3.8 million net of $200,000 expenses. Both the common stock and the common stock warrants are classified as equity and recorded on a relative fair value basis. The warrants will expire on December 24, 2023. The warrants contain customary adjustments and are exercisable immediately for cash and after six months will also be exercisable on a cashless basis if there is no effective registration statement registering the resale of the Warrant Shares. The Investors do not have registration rights in connection with any securities purchased in the Offering. The closing of the Offering took place on December 24, 2018.

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