Note 15 - Subsequent Events

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

Subsequent Events [Text Block]

15. Subsequent Events

Effective Shelf Registration Statement

On July 2, 2021, we filed a universal shelf registration statement with the SEC on Form S-3 for the proposed offering from time to time of up to $75,000,000 of our securities, including common stock, preferred stock, and/or warrants. This registration statement currently has a capacity of $75,000,000. However, as a result of the limitations of General Instruction I.B.6. of Form S-3, or the so-called “baby shelf rules”, the amount of shares of our common stock available for sale under a registration statement on Form S-3 is limited to one-third of the aggregate market value of our common equity held by non-affiliates of the Company over any rolling 12-month period. As of June 30, 2021, we have not issued any shares or received any proceeds pursuant to the universal shelf registration statement.