On November 16, 2021, we received $10.0 million in net proceeds from the issuance of an unsecured promissory note, or the 2021 Note, with a face amount of $10.2 million. The 2021 Note bears interest at a rate of 9.5% per annum, matures January 1, 2023 and includes an original issue discount of $0.2 million. We may prepay all or a portion of the 2021 Note at any time by paying 105% of the outstanding balance elected for pre-payment.
In November 2021, we issued in an underwritten public offering an aggregate of 46,000,000 shares of common stock at a purchase price per share of $1.25 for $54.0 million in net proceeds after payment of underwriter discounts and commissions and other offering costs. GMS Ventures purchased an aggregate of 16,000,000 shares of common stock in the public offering at the public offering price. In connection with the underwritten public offering, we issued the underwriter warrants to purchase up to an aggregate of 2,100,000 shares of common stock at an exercise price of $1.5625 per share, which warrants have a five-year term.
During the year ended September 30, 2022, warrants to purchase an aggregate of 400,360 shares of common stock with a weighted average exercise price of $12.00 expired; and warrants to purchase an aggregate of 15,675 shares of common stock with a weighted average exercise price of $12.00 were exercised for cash.
During the year ended September 30, 2022, we sold 4,808,269 shares of common stock under our ATM Offering for $8.6 million in gross proceeds, and paid fees to the sales agent of $0.3 million.
Subsequent to September 30, 2022, we sold an additional 895,391 shares of common stock under our ATM Offering for $1.1 million in net proceeds and the fees paid to the sales agent were immaterial.
In December 2022, in a registered direct equity offering to certain institutional and accredited investors, including GMS Ventures, our largest stockholder, we issued 28,460,831 shares of common stock at a purchase price per share of $0.8784 for $24.0 million in net proceeds after payment of placement agent fees and other estimated offering costs. GMS Ventures purchased an aggregate of 14,230,418 shares of common stock in the registered direct equity offering. In connection with the registered direct equity offering, we issued to M.S. Howells & Co., as placement agent for certain accredited investors in the offering, warrants to purchase up to an aggregate of 515,755 shares of common stock, which will be exercisable commencing on the one-year anniversary of the closing of the offering at an exercise price of $1.05 per share, which warrants have a three-year term.
On December 22, 2022, we entered into a Securities Purchase Agreement and issued an unsecured convertible promissory note with a face amount of $31.8 million, or the Note, to Streeterville Capital, LLC, or the Lender, the current holder of our outstanding unsecured promissory note maturing on January 1, 2023, or November 2021 Note. The Note has an original issue discount of $1.8 million. We received gross proceeds of $30.0 million upon the closing on December 28, 2022, after deducting the Lender’s transaction costs in connection with the issuance. A portion of the proceeds from the Note were used to repay in full the remaining outstanding principal and accrued interest on the November 2021 Note, which was cancelled upon repayment. The Note bears interest at 9.5% per annum and matures on January 1, 2024. The Note contains customary covenants, including a restriction on our ability to pledge certain of our assets, subject to certain exceptions, without the Lender’s consent. Beginning on April 1, 2023, the Lender will have the right to convert the Note at an initial conversion price of $2.00 per share. The principal amount and conversion price of the Note are subject to adjustment upon certain triggering events. See “Description of Indebtedness” below for additional detail.
We evaluated whether there are conditions or events, considered in the aggregate, that raise substantial doubt about our ability to continue as a going concern. As of September 30, 2022, we had stockholders’ equity of $8.7 million. In addition, the $11.1 million 2021 Note, which bears interest at a rate of 9.5% per annum compounding daily, matures January 1, 2023. Our current cash resources of $17.4 million as of September 30, 2022, together with net proceeds of $17.8 million from our December 2022 issuance of the Note, $24.0 million from our December 2022 sale of shares of our common stock in the registered direct equity offering, and $1.1 million from the sale of shares of common stock under our ATM Offering since September 30, 2022, are expected to fund our operations into the third calendar quarter of 2023. These factors raise substantial doubt about our ability to continue as a going concern. Our consolidated financial statements do not include any adjustments related to the recoverability and classification of recorded asset amounts or the amounts and classification of liabilities that might result from the outcome of this uncertainty. We anticipate incurring additional losses until such time, if ever, that we can generate significant sales of ONS-5010 or any other product candidate we may develop. We will