Each share of common stock is entitled to one vote. The holders of common stock are also entitled to receive dividends whenever funds are legally available and when declared by the board of directors, subject to the prior rights of holders of all classes of stock outstanding. As of June 30, 2024, a total of 3,589,232 shares of common stock were reserved for issuance upon the exercise of outstanding stock options and warrants under the 2020 Equity Incentive Plan (the "2020 Plan") and the 2011 Equity Incentive Plan.

Share Issuances

On February 1, 2024, the Company entered into an At The Market Offering (the “ATM”) with H.C. Wainwright & Co., LLC as sales agent (the “Agent”), pursuant to which the Company may, from time to time, issue and sell shares of its common stock, at an aggregate offering price of up to approximately $5.7 million (the “Shares”) through the Agent. Under the terms of the Agreement, the Agent may sell the Shares at market prices by any method that is deemed to be an “ATM” as defined in Rule 415 under the Securities Act, as amended. On May 20, 2024, the Company reduced the aggregate offering price to $50,000, not including the shares of common stock previously sold.

Subject to the terms and conditions of the Agreement, the Agent will use its commercially reasonable efforts to sell the Shares from time to time, based upon the Company’s instructions. The Company has no obligation to sell any of the Shares, and may at any time suspend sales under the Agreement or terminate the Agreement in accordance with its terms. The Company has provided the Agent with customary indemnification rights, and the Agent will be entitled to a fixed commission of 3.0% of the aggregate gross proceeds from the Shares sold. The Agreement contains customary representations and warranties, and the Company is required to deliver customary closing documents and certificates in connection with sales of the Shares. As of June 30, 2024, 315,338 ATM Shares have been sold under the Agreement with net proceeds of $820,509 to the Company.

On May 20, 2024, the Company entered into a securities purchase agreement with a single institutional investor in connection with a registered direct offering and concurrent private placement with the same institutional investor (collectively the "May 2024 Offering"). The May 2024 Offering consisted of (i) 714,527 shares of the Company's common stock sold at $1.68 per share, (ii) Pre-Funded Common Warrants to purchase up to 957,925 shares of common stock with an exercise price of $0.0001 which are immediately exercisable after the issuance until exercised in full, (iii) Series A Common Warrants to purchase 1,672,452 shares of common stock with an exercise price of $1.68 per share which expire on the one-year anniversary from the date of stockholder approval, and (iv) Series B Common Warrants to purchase 1,672,452 shares of common stock with an exercise price of $1.68 per

share which expire on the five-year anniversary from the date of stockholder approval. All of the warrants in the May 2024 Offering were issued to a single investor. As of the date of issuance, the investor exercised 247,925 Pre-Funded Common Warrants. The Company received net proceeds from the May 2024 Offering of approximately $2.2 million.

On May 20, 2024, the Company also entered into a warrant inducement agreement with the same investor to exercise certain outstanding warrants that the Company issued in January 2023 ("January 2023 Existing Warrants"). Pursuant to the warrant inducement agreement, the investor agreed to exercise outstanding warrants to purchase an aggregate of 708,500 shares of the Company's common stock at an amended exercise price of $1.68 per share. These shares are held in abeyance and not considered outstanding. The shares held in abeyance will be held in abeyance until notice from the investor that the balance, or portion thereof, may be issued in compliance with a beneficial ownership limitation provision in the warrants. The Company also agreed to reduce the exercise price of the remaining unexercised portion of such warrants to purchase 1,229,484 shares of common stock to $1.68 per share and to issue the investor Series C Common Warrants to purchase 708,500 shares of the Company's common stock and Series D Common Warrants to purchase 708,500 shares of the Company's common stock ("January 2023 New Warrants"). Each will have an exercise price of $1.68 per share and will be exercisable beginning on the effective date of stockholder approval. The Series C Common Warrants will expire on the one-year anniversary from the date of stockholder approval and the Series D Common Warrants will expire on the five-year anniversary from the date of stockholder approval.