Note 13. Capital Stock

As of June 30, 2025 and December 31, 2024, our amended and restated certificate of incorporation authorized us to issue 600,000,000 shares of Common Stock, par value $0.0001 per share; and 1,000,000 shares of Preferred Stock, par value $0.0001 per share. As of June 30, 2025 and December 31, 2024, we had 9,462,071 and 8,089,565 shares of Common Stock issued and outstanding, respectively, and no shares of Preferred Stock issued or outstanding.

Our common stockholders are entitled to one vote per share and to notice of any stockholders’ meeting. Voting, dividend, and liquidation rights of the holders of Common Stock are subject to the prior rights of holders of all classes of stock and are qualified by the rights, powers, preferences, and privileges of the holders of Preferred Stock. No distributions shall be made with respect to Common Stock until all declared dividends to Preferred Stock have been paid or set aside for payment. Common Stock is not redeemable at the option of the holder.

Common Stock Warrants

We have issued the following outstanding warrants and pre-funded warrants to purchase shares of Common Stock:

Public Offerings

In October 2024, pursuant to a placement agency agreement with Canaccord Genuity LLC (“Canaccord”), we sold 725,000 shares of Common Stock and pre-funded warrants to purchase up to 17,626 shares of Common Stock (the “2024 Pre-Funded Warrants”). The aggregate gross proceeds were approximately $3.5 million, excluding the proceeds, of any, from the exercise of the pre-funded warrants and before deducting placement agent fees and expenses and other expenses payable by us. We paid Canaccord a placement agent fee of 6.00% of the aggregate gross proceeds of the offering. The offering was made pursuant to our registration statement on Form S-3 (file number 333-264299), declared effective on April 26, 2022, and a related prospectus supplement. Additionally, in separate, concurrent private placements, we also sold 379,930 shares of Common Stock, 2024 Pre-Funded Warrants to purchase up to 424,358 shares of Common Stock, and warrants to purchase up to 1,546,914 shares of Common Stock (the “2024 Common Warrants”). The aggregate gross proceeds from the private placements were approximately $3.8 million, of which $1.3 million was contributed by certain of our directors, executive officers and their affiliated entities, and excludes the proceeds, if any, from the exercise of the 2024 Pre-Funded Warrants and 2024 Common Warrants. The 2024 Pre-Funded Warrants were exercisable immediately at a price of $0.001 per share and expire when exercised in full. The 2024 Common Warrants were exercisable immediately at a price of $4.82 per share and expire five years from issuance. The total fair value of the Common Stock, 2024 Pre-Funded Warrants, and 2024 Common Warrants sold in the offerings exceeded the offering proceeds by $2.1 million, therefore pursuant to ASC 815, we recognized this amount as a loss on the initial issuance of equity during the year ended December 31, 2024. The placement agent fees and offering expenses were allocated to the Common Stock, 2024 Pre-Funded Warrants, and 2024 Common Warrants sold in the offering based on their relative fair values, with the amount allocated to the liability-classified 2024 Common Warrants recorded as an expense and the amounts allocated to the Common Stock and 2024 Pre-Funded Warrants as a reduction to their initial carrying values.

Common Stock Sales Agreement

In April 2022, we entered into an equity distribution agreement (the “2022 ATM Agreement”), which we amended in December 2022. In April 2025, we entered into an equity distribution agreement (the “2025 ATM Agreement,” and collectively with the 2022 ATM Agreement, the “ATM Agreements”). Canaccord acts as placement agent under the ATM Agreements and we may offer and sell shares of Common Stock from time to time through Canaccord. The issuance and sale of Common Stock by us under the 2022 ATM Agreement was made pursuant to our registration statement on Form S-3 (file number 333-264299), declared effective by the SEC on April 26, 2022, and a related prospectus supplement, which expired on April 26, 2025. The issuance and sale of Common Stock by us under the 2025 ATM Agreement was made pursuant to our registration statement on Form S-3 (file number 333-286058), declared effective by the SEC on April 25, 2025, and a related prospectus supplement.

Pursuant to the ATM Agreements, Canaccord is not required to sell any specific number or dollar amount of Common Stock but will act as our placement agent to sell, on our behalf, all of the Common Stock requested by us to be sold, consistent with Canaccord’s normal trading and sales practices, on terms mutually agreed between Canaccord and us, for a fixed commission from each sale of Common Stock, if any. During the three and six months ended June 30, 2025, we sold 758,990 and 1,337,195 shares of Common Stock, respectively, generated gross proceeds of $2.3 million and $5.1 million, respectively, and paid commissions of $35,000 and $0.1 million, respectively. We did not effect any sales during any of the other periods presented herein.

Common Stock Purchase Agreement

On March 3, 2023, we entered into a purchase agreement (the “Purchase Agreement”) with Lincoln Park Capital Fund, LLC (“Lincoln Park”), pursuant to which Lincoln Park committed to purchase up to $25.0 million of shares of Common Stock at our sole discretion and subject to certain daily limitations based on our prior day purchase history and the volume and closing price of our Common Stock on Nasdaq, from time to time over a 36-month period commencing on March 7, 2023. The issuance and sale of Common Stock under the Purchase Agreement is made pursuant to our registration statement on Form S-3 (file number 333-264299), declared effective by the SEC on April 26, 2022. On June 16, 2023, we suspended and terminated the prospectus supplement related to the offering with respect to the unsold shares of Common Stock issuable pursuant to the Purchase Agreement. We will not make any further sales of our securities pursuant to the Purchase Agreement, unless and until a new prospectus supplement is filed. Other than the termination of the prospectus supplement related to the offering with respect to future sales by us, the Purchase Agreement remains in full force and effect.

On the date of the Purchase Agreement, we issued 16,633 shares of Common Stock (the “Initial Commitment Shares”) to Lincoln Park as an initial fee for its commitment under the Purchase Agreement. We recorded the fair value of the Initial Commitment Shares on the date of issuance in other income (expense), net. We may further issue up to 8,317 additional shares of Common Stock (the “Additional Commitment Shares,” and, together with the Initial Commitment Shares, the “Commitment Shares”) on a pro rata basis upon each purchase by Lincoln Park under the Purchase Agreement. Under applicable Nasdaq listing rules, the total number of shares of Common Stock that we may sell to Lincoln Park is limited to 765,506 shares (including the Commitment Shares), representing 19.99% of the outstanding shares of our Common Stock immediately prior to the execution of the Purchase Agreement, unless we (i) first obtain stockholder approval in accordance with applicable Nasdaq listing rules or (ii) the average price paid by Lincoln Park for all shares of Common Stock issued by us under the Purchase Agreement is equal to or greater than $24.8080. The Purchase Agreement prohibits us from directing Lincoln Park to purchase any shares of Common Stock that would result in Lincoln Park having beneficial ownership of greater than 4.99% of our outstanding Common Stock, which Lincoln Park may, in its sole discretion, increase up to 9.99% of our outstanding Common Stock by delivering written notice thereof to us, which shall not be effective until the 61st day after such written notice is delivered to us. We may terminate the Purchase Agreement at any time, for any reason and without any payment or liability to us, by giving Lincoln Park a termination notice with effect one business date after the notice has been received by Lincoln Park.

We evaluated the Purchase Agreement under ASC 815-40 Derivatives and Hedging—Contracts on an Entity's Own Equity as it represents the right to require Lincoln Park to purchase shares of Common Stock in the future, similar to a put option. We concluded it represents a freestanding derivative instrument that does not qualify for equity classification and therefore requires fair value accounting. We analyzed the terms of the contract and concluded the derivative instrument has no value as of June 30, 2025 and  December 31, 2024. We did not effect any sales during the periods presented herein.