Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Tables)

v3.19.1
Stockholders' Equity (Tables)
3 Months Ended
Mar. 31, 2019
Stockholders' equity:  
Schedule of stock options issued by the Company

Stock option activity under all of the Company’s Plans during the three months ended March 31, 2019 is summarized below:

 

    Shares    

Weighted -
Average

Exercise
Price

 
Outstanding at January 1, 2019     1,386,396     $ 11.09  
Granted     -       -  
Expired / forfeited     (12 )     385.60  
Outstanding at March 31, 2019     1,386,384     $ 11.09
Schedule of common stock warrant activity

Warrants have generally been issued for terms of up to five years. Common stock warrant activity for the three months ended March 31, 2019 was as follows:

 

    Shares    

Weighted -
Average

Exercise
Price

 
Outstanding at January 1, 2019     8,676,481     $ 4.17  
Issued     -       -  
Exercised     (69,212 )     2.20  
Expired / Terminated     (29,754 )     41.55  
Outstanding at March 31, 2019     8,577,515     $ 4.07