Maturities of operating lease liabilities were as follows:
| | | | |
2023 | | | 87 | |
Total lease payments | | | 87 | |
Less: imputed interest | | | 1 | |
Total lease liabilities | | $ | 86 | |
| | | | |
Weighted-average remaining lease term at end of period (in years) | | | 0.3 | |
Weighted-average discount rate at end of period | | | 5.1 | % |
(6) Equity
Common Stock Issued Related to Restricted Stock Units
During the three months ended March 31, 2023 and 2022, the Company issued 834 shares of common stock and 16,265 shares of common stock, respectively, subject to vesting of the restricted stock units. For further details see Note 10.
February Public Offering of Common Stock and Warrants
On February 8, 2023, the Company closed a public offering of 1,275,000 units, with each consisting of one share of its common stock, or one pre-funded warrant to purchase one share of its common stock, and one warrant to purchase one and one-half shares of its common stock. Each unit was sold at public offering price of $8.00. The warrants in the units are immediately exercisable at a price of $8.00 per share and expire five years from the date of issuance. Alternatively, each warrant can be exercised pursuant to the “alternative cashless exercise” provision, to which the holders would receive an aggregate number of shares of common stock equal the product of (x) the aggregate number of shares of common stock that would be issuable upon a cash exercise and (y) 0.50. For purposes of clarity, one common warrant to purchase one and one-half shares would be exercisable for 0.75 shares under this alternative cashless exercise provision. The shares of common stock (or pre-funded warrants in lieu thereof) and accompanying warrants were only purchasable together in this offering but were issued separately and immediately separable upon issuance. As of March 31, 2023, warrants to purchase 1,670,626 shares of common stock have been exercised under the alternative cashless exercise for a total of 835,313 shares of common stock.
Gross proceeds, before deducting underwriting discounts and commissions and estimated offering expenses, are approximately $10.2 million. The Company intends to use the net proceeds of this offering to continue implementation of its growth strategies, for working capital and general corporate purposes.
The Company also granted the underwriters an option to purchase an additional 191,250 shares of common stock and/or additional warrants to purchase up to 286,875 shares of common stock, to cover over-allotments, of which Maxim Group LLC exercised its option to purchase additional warrants to purchase 286,875 shares of common stock.
(7) Warrants
On February 8, 2023, the Company completed a public offering in which three classes of warrants were issued. There were 2,199,375 common stock purchase warrants issued with an alternative cashless exercise provision. The alternative cashless exercise allows the holder to exercise one warrant share for 0.5 shares of common stock or exercise via the cash exercise price of $8.00 per share of common stock per warrant. These warrants we classified as a liability, and the Company utilized a bifurcated Black-Scholes option pricing model to consider the cash exercise option and cashless exercise option. The bifurcated Black-Scholes option pricing model used an exercise price where the two exercise methods would be indifferent with market inputs of the stock price on the issuance, risk free interest rate, expected share price volatility and dividend yield. The Company calculates the fair value of the warrants at each reporting period and when a warrant is exercised, with the changes in fair value recognized in the statement of operations. Below is a summary of the initial inputs used in the bifurcated Black-Scholes option pricing model.