13. Warrant Liability

On September 2, 2021, March 11, 2021, February 3, 2021, December 24, 2020, March 18, 2020, September 10, 2019, and November 6, 2019, the Company issued 22,019, 34,286, 7,428, 7,286, 44,286, 35,714 and 114,286 warrants, respectively, as equity issuance consideration, in connection with a private placement of the Company’s common stock. The warrants entitle the holder to purchase one share of our common stock at an exercise price equal to $0.49 to $5.25 per share at any time on or after their issuance date and on or prior to the close of business 3 years after the issuance date (the “Termination Date”). The Company determined that these warrants are free standing financial instruments that are legally detachable and separately exercisable from the common stock included in the public share offering. Management also determined that the warrants required classification as a liability pursuant to ASC 815, Derivatives and Hedging. In accordance with the accounting guidance, the outstanding warrants are recognized as a warrant liability on the balance sheet and are measured at their inception date fair value and subsequently re-measured at each reporting period with changes being recorded as a component of other expense, net in the statement of operations.

On September 6, 2022, the Company agreed to extend the September 10, 2019 and November 6, 2019 warrants an additional six months until March 9, 2023 and May 5, 2023, respectively. The warrants were remeasured as of September 6, 2022 and consequently resulted in a warrant modification expense of $57 thousand.

The warrants outstanding and fair values at each of the respective valuation dates are summarized below:

Schedule of Warrant Liability  

The warrant liabilities are considered Level 3 liabilities on the fair value hierarchy as the determination of fair value includes various assumptions about future activities and the Company’s stock prices and historical volatility of other comparable public companies used as inputs. As of September 30, 2022, none of the warrants have been exercised.