Quarterly report pursuant to Section 13 or 15(d)

Subsequent Event

Subsequent Event	6 Months Ended
Jun. 30, 2022
Subsequent Event [Abstract]
Subsequent Event	Note 6 – Subsequent Event Since June 30, 2022, the Company has sold 0.3 million shares of common stock under its A&R Sales Agreement, resulting in net proceeds of $1.4 million. On August 2, 2022, warrants to purchase an aggregate of 0.6 million shares of common stock expired. These warrants were issued on August 2, 2017, when the Company completed an underwritten offering of 0.7 million shares of its common stock and warrants to purchase an aggregate of 0.6 million shares of its common stock at a price of $22.50 per share and related warrant. The warrants were exercisable for a period of 5 years at an exercise price of $31.50 per share. As of August 12, 2022, the Company has 1.4 million warrants outstanding.

Subsequent Event

6 Months Ended

Jun. 30, 2022

Note 6 – Subsequent Event

Since June 30, 2022, the Company has sold 0.3 million shares of common stock under its A&R Sales Agreement, resulting in net proceeds of $1.4 million.

On August 2, 2022, warrants to purchase an aggregate of 0.6 million shares of common stock expired. These warrants were issued on August 2, 2017, when the Company completed an underwritten offering of 0.7 million shares of its common stock and warrants to purchase an aggregate of 0.6 million shares of its common stock at a price of $22.50 per share and related warrant. The warrants were exercisable for a period of 5 years at an exercise price of $31.50 per share. As of August 12, 2022, the Company has 1.4 million warrants outstanding.