Equity

9 Months Ended

Sep. 30, 2023

Equity [Abstract]

Equity

Note 6 — Equity

Common Stock

We issued no shares for options during 2023 or 2022. We issued 10,763 and 9,589 shares, respectively, as a result of vesting RSUs during the nine months ended September 30, 2023 and 2022.

Warrants

In 2020, we issued warrants for the purchase of 1,250 shares of common stock at an exercise price of $115 per share, exercisable on the date of grant, expiring in April 2025. The weighted average fair value at the grant date was $83.20 per warrant. The fair value at the grant date was estimated utilizing the Black-Scholes valuation model with the following weighted average assumptions (i) dividend yield on our common stock of 0 percent (ii) expected stock price volatility of 97 percent (iii) a risk-free interest rate of 0.27 percent and (iv) and expected option term of 5 years.

Warrants Issued		Exercise Price		Outstanding and Exercisable December 31, 2022		Issued		Exercised		Terminated / Cancelled		Outstanding and Exercisable September 30, 2023		Expiration Date
	1,250	$	115		1,250		—		—		—		1,250	April 30, 2025