Common Stock

On June 6, 2022, the Company filed a Certificate of Amendment to its Certificate of Incorporation with the Secretary of State of the State of Delaware, pursuant to which the number of shares of all classes of the Company’s capital stock authorized for issuance was increased from 200,000,000 shares to 800,000,000 shares, and the number of shares of common stock authorized for issuance was correspondingly increased from 190,000,000 shares to 790,000,000 shares. The number of shares of preferred stock authorized for issuance was not impacted by the amendment. As of December 31, 2023 and 2022, the Company had 161,678,000 and 152,104,000 shares of common stock issued and outstanding, respectively.

During the year ended December 31, 2022, the Company issued 5,496,000 shares of common stock to a vendor as compensation for $0.4 million of services provided to the Company. In accordance with the agreement, the Company issued 2,500,000 additional shares of common stock to the vendor during the year ended December 31, 2023. Subsequent to December 31, 2023, the Company issued the vendor an additional 1,549,410 shares of common stock.

Preferred Stock

On March 30, 2022, the Company closed a registered direct offering with an institutional investor for the issuance and sale of an aggregate of 700 shares of the Company's Series A Convertible Preferred Stock ("Preferred Stock") and warrants to purchase up to an aggregate of 10,000,000 shares of common stock, par value $0.0001 per share, for gross proceeds of $0.7 million, or net cash proceeds of $0.6 million after deducting $0.1 million related to placement agent’s fees and other offering expenses. Shares of the Preferred Stock had a stated value of $1,000 per share and were convertible into an aggregate of 10,000,000 shares of common stock at a conversion price of $0.07 per share at any time. The warrants have an exercise price of $0.10 per share. In addition, the Company issued designees of the placement agent warrants to purchase up to 750,000 shares of common stock at an exercise price of $0.0875 per share, and their fair value of $0.1 million was recorded as an additional offering cost. In April 2022, the investor converted all of the 700 outstanding shares of Preferred Stock into an aggregate of 10,000,000 shares of common stock.

The Preferred Stock did not have any mandatory redemption provisions, contingently redeemable redemption provisions, preferential dividend rights, or liquidation preferences. The Preferred Stock had no voting rights, other than the right to vote as a class on certain matters, except that each share of Preferred Stock had the right to cast 170,000 votes per share of Preferred Stock, voting together as a single class with holders of Company common stock, on the proposals to (i) amend the Company’s Certificate of Incorporation to increase the number of shares of capital stock authorized for issuance thereunder from 200,000,000 to 800,000,000 and the authorized number of shares of common stock from 190,000,000 to 790,000,000 shares (the “Increase in Authorized”), and (ii) authorize the Company’s board of directors, at any time or times before May 30, 2025, to amend the Company’s Certificate of Incorporation to effectuate a reverse stock split of the Company’s issued and outstanding shares of common stock in a range of not less than 1-for-10 and not greater than 1-for-400, which were presented to the Company’s shareholders for approval, and were ultimately approved by the Company's shareholders, at the Company’s 2022 annual meeting of shareholders.

The Company evaluated the classification of the Preferred Stock and determined equity classification was appropriate due to no mandatory or contingently redeemable redemption features. The warrants issued to the investors in the offering were considered freestanding equity classified instruments. The Company first allocated gross proceeds from the registered direct offering between the Preferred Stock and the warrants issued to investors using a relative fair value approach, resulting in an initial allocation to the instruments of $0.4 million and $0.3 million, respectively. The issuance costs, inclusive of the fair value of the warrants issued to placement agent designees, were allocated between the Preferred Stock and the warrants issued to investors in a systematic and rational manner, resulting in an allocation

to the instruments of $0.1 million and $0.1 million, for a net allocation of $0.3 million and $0.2 million, respectively. On the issuance date, the Company estimated the fair value of the warrants issued to investors and to placement agent designees using a Black-Scholes pricing model using the following assumptions: (i) contractual term of 3 years, (ii) expected volatility rate of 104.0%, (iii) risk-free interest rate of 2.5%, (iv) expected dividend rate of 0%%, and (v) closing price of the Company’s common stock as of the day immediately preceding the registered direct offering. The fair value of Preferred Stock was estimated based upon equivalent common shares that Preferred Stock could have been converted into at the closing price of the day immediately preceding the purchase date.

The embedded conversion feature was evaluated and bifurcation from the Preferred Stock equity host was not considered necessary. Upon conversion of the Preferred Stock to common stock in April 2022, the Company recognized a deemed dividend of $0.9 million.

Warrants