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Note 7 - Common Stock, Treasury Stock and Warrants
 9 Months Ended
Sep. 30, 2022
Notes to Financial Statements  
Stockholders' Equity Note Disclosure [Text Block]

7. Common stock, treasury stock and warrants

 

Common stock

 

As of  September 30, 2022 and December 31, 2021, the number of issued shares of common stock was 84,242,962 and 83,057,083, respectively, which included shares of treasury stock of 4,300,152 and 4,091,823, respectively.

 

For the nine months ended September 30, 2022, the change in the number of issued shares of common stock was the result of an aggregate 1,185,879 shares of common stock issued upon vesting of RSUs, including 208,329 shares of common stock withheld to cover statutory taxes upon such vesting, which are reflected in treasury stock, as discussed below.  

 

Treasury stock

 

As of  September 30, 2022 and December 31, 2021, the Company held shares of treasury stock of 4,300,152 and 4,091,823, respectively with a cost of $11,171 and $10,723, respectively.

 

The Company's share-based incentive plans allow employees the option to either make cash payment or forfeit shares of common stock upon vesting to satisfy federal and state statutory tax withholding obligations associated with equity awards. The forfeited shares of common stock may be taken into treasury stock by the Company or sold on the open market. For the nine months ended September 30, 2022, 208,329 shares of common stock were withheld to cover statutory taxes owed by certain employees for this purpose, all of which were taken into treasury stock. See Note 8, Share-based compensation. 

 

Warrants

 

On May 22, 2022, the warrants to purchase an aggregate of 833,333 shares of common stock at prices ranging from $3.75 to $6.00 per share expired, unexercised.