Note 6 - Warrants

3 Months Ended

Mar. 31, 2019

Notes to Financial Statements

Warrants [Text Block]

6.

Warrants

 

At

March 31, 2019

and

December 31, 2018,

we had

4,075,005

and

4,080,005

warrants outstanding, respectively and exercisable with a weighted average exercise price of

$4.35

at the end of each period. During the

three

month period ended

March 31, 2019,

5,000

warrants were exercised with a weighted average exercise price of

$4.75,

yielding

$24,000

in proceeds to the Company.