COMMON STOCK - Note 9	12 Months Ended
Dec. 31, 2019
Notes To Financial Statements Abstract
Common stock - Note 9	9. COMMON STOCK In December 2019, we entered into a Common Stock Purchase Agreement with Lincoln Park granting us the right to sell shares of our common stock having an aggregate value of up to $16.0 million. Under the terms of the agreement, Lincoln Park made an initial purchase of 1.5 million shares of common stock for $1.0 million at a purchase price of $0.6531 per share. Subject to various limitations and conditions set forth in the agreement, we may sell up to an additional $15.0 million in shares of common stock, from time to time, at our sole discretion to Lincoln Park over a 24-month period beginning December 2019. In consideration for entering into the agreement, we issued 375,000 shares of our common stock, having a value of $277,000, based on the closing stock price at the date of grant, to Lincoln Park as a commitment fee. We incurred an additional $90,000 in issuance costs. In July 2019, we raised $2.0 million before issuance costs of approximately $24,000 through a registered direct offering of 3.0 million shares of our common stock to a private investor. In April 2019, we raised $2.0 million before issuance costs of approximately $34,000 through a registered direct offering of 2.3 million shares of our common stock to a private investor. In April 2019, we entered into a Common Stock Purchase Agreement with Lincoln Park granting us the right to sell shares of our common stock having an aggregate value of up to $11.0 million. Under the terms of the agreement, Lincoln Park made an initial purchase of $1.0 million in shares of common stock at a purchase price of $0.98 per share. Subject to various limitations and conditions set forth in the agreement, we may sell up to an additional $10.0 million in shares of common stock, from time to time, at our sole discretion to Lincoln Park over a 24-month period beginning April 2019. In consideration for entering into the agreement, we issued 250,000 shares of our common stock, having a value of $258,000, based on the closing stock price at the date of grant, to Lincoln Park as a commitment fee. We incurred an additional $92,000 in issuance costs. As of December 31, 2019, we have issued 15.7 million shares and raised a total of $11.0 million under this agreement. No further shares are available for sales under this agreement. In January 2019, we raised $1.2 million before issuance costs of approximately $26,000 through a registered direct offering of 2.0 million shares of our common stock to a private investor. In December 2018, we raised $4.2 million before issuance costs of approximately $524,000 through an underwritten public offering of 7.0 million shares of our common stock. In June 2018, we raised $18.0 million before issuance costs of approximately $1.4 million through an underwritten public offering of 14.4 million shares of our common stock.

COMMON STOCK - Note 9

12 Months Ended

Dec. 31, 2019

Notes To Financial Statements Abstract

9. COMMON STOCK

In December 2019, we entered into a Common Stock Purchase Agreement with Lincoln Park granting us the right to sell shares of our common stock having an aggregate value of up to $16.0 million. Under the terms of the agreement, Lincoln Park made an initial purchase of 1.5 million shares of common stock for $1.0 million at a purchase price of $0.6531 per share. Subject to various limitations and conditions set forth in the agreement, we may sell up to an additional $15.0 million in shares of common stock, from time to time, at our sole discretion to Lincoln Park over a 24-month period beginning December 2019. In consideration for entering into the agreement, we issued 375,000 shares of our common stock, having a value of $277,000, based on the closing stock price at the date of grant, to Lincoln Park as a commitment fee. We incurred an additional $90,000 in issuance costs.

In July 2019, we raised $2.0 million before issuance costs of approximately $24,000 through a registered direct offering of 3.0 million shares of our common stock to a private investor.

In April 2019, we raised $2.0 million before issuance costs of approximately $34,000 through a registered direct offering of 2.3 million shares of our common stock to a private investor.

In April 2019, we entered into a Common Stock Purchase Agreement with Lincoln Park granting us the right to sell shares of our common stock having an aggregate value of up to $11.0 million. Under the terms of the agreement, Lincoln Park made an initial purchase of $1.0 million in shares of common stock at a purchase price of $0.98 per share. Subject to various limitations and conditions set forth in the agreement, we may sell up to an additional $10.0 million in shares of common stock, from time to time, at our sole discretion to Lincoln Park over a 24-month period beginning April 2019. In consideration for entering into the agreement, we issued 250,000 shares of our common stock, having a value of $258,000, based on the closing stock price at the date of grant, to Lincoln Park as a commitment fee. We incurred an additional $92,000 in issuance costs. As of December 31, 2019, we have issued 15.7 million shares and raised a total of $11.0 million under this agreement. No further shares are available for sales under this agreement.

In January 2019, we raised $1.2 million before issuance costs of approximately $26,000 through a registered direct offering of 2.0 million shares of our common stock to a private investor.

In December 2018, we raised $4.2 million before issuance costs of approximately $524,000 through an underwritten public offering of 7.0 million shares of our common stock.

In June 2018, we raised $18.0 million before issuance costs of approximately $1.4 million through an underwritten public offering of 14.4 million shares of our common stock.