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Note 9 - Warrants
9 Months Ended
Sep. 30, 2021
Notes to Financial Statements  
Warrants [Text Block]

9. Warrants

 

In March 2014, in a registered public offering and in accordance with a separate note conversion agreement with certain note holders, the Company issued warrants to purchase 6,910,283 shares of common stock at $4.75 per share. The warrants expired in March 2021.

 

In May 2016, in connection with a credit facility with WAVI Holding AG, a significant stockholder of the Company, the Company issued a warrant to purchase 550,000 shares of common stock at $1.75 per share. The warrant was immediately exercisable and had an original expiration date of May 2021.

 

On May 14, 2020, the Company entered into separate warrant exercise agreements with WAVI Holding AG and Taurus4757 GmbH pursuant to which the warrant holders immediately exercised their respective warrants via a “cashless” exercise as agreed to by the Company. As a result of the cashless exercise, the Company issued an aggregate of 2,747,970 shares of Company common stock upon cashless exercise of an aggregate of 3,871,405 warrants.

 

On March 25, 2021, all remaining outstanding warrants were exercised via a “cashless” exercise. As a result of the cashless exercise, the Company issued an aggregate of 70,030 shares of Company common stock upon cashless exercise of an aggregate of 79,100 warrants.

 

The following table summarizes warrant activity for the nine months ended September 30, 2021:

 

  

Shares

  

Wtd. Avg.

Exercise Price

 

Outstanding as of December 31, 2020

  79,100  $4.75 

Exercised

  (79,100)  4.75 

Outstanding and exercisable as of September 30, 2021

  -  $-