into a lock-up agreement restricting the disposal of any shares of our Common Stock that are issued in connection with the exercise of the RAT Loan Warrants or the Subordination Agreement Warrants for a period of twelve (12) months from the date of the RAT Non-Revolving Line of Credit Agreement Amendment.
The RAT Non-Revolving Line of Credit had a balance, including accrued interest, amounting to $1,770,795 and $2,300,899 as of December 31, 2023, and September 30, 2023, respectively. We incurred interest expense for the RAT Non-Revolving Line of Credit in the amount of $136,976 and $224,105 for the three months ended December 31, 2023, and 2022, respectively.
May 2023 Secured Loan
Effective as of May 10, 2023, we entered into a Secured Non-Revolving Line of Credit Loan Agreement (the “May 2023 Secured Line of Credit Agreement”) with several individuals and institutional lenders for aggregate loans of up to $4.0 million (the “May 2023 Secured Line of Credit”), evidenced by the Secured Non-Revolving Line of Credit Promissory Notes (each a “May 2023 Secured Note” and collectively, the “May 2023 Secured Notes”), also effective as of May 10, 2023. The May 2023 Secured Line of Credit matures twenty-four (24) months from the date of the May 2023 Secured Line of Credit and accrues interest, payable semi-annually in arrears, at a fixed rate of interest equal to twelve percent (12%) per year. We granted to the lenders under the May 2023 Secured Line of Credit Agreement a security interest in all of our present and future assets and properties, real or personal, tangible or intangible, wherever located, including products and proceeds thereof, which security interest is pari passu with the RAT Non-Revolving Line of Credit Agreement and the Excel Revolving Line of Credit Agreement, but is subordinate in rights to GemCap under the GemCap Revolving Line of Credit Agreement. See “— GemCap Revolving Line of Credit Agreement.”
In connection with the May 2023 Secured Line of Credit, on May 10, 2023, we agreed to issue to each lender under the May 2023 Secured Line of Credit Agreement, upon a drawdown, a warrant to purchase up to an aggregate of 369,517 shares of our Common Stock. Each warrant has an exercise price of $4.33 per share, expires on May 10, 2026, and is exercisable at any time prior to such date.
As of May 10, 2023, Excel, an entity managed by Mr. Cassidy, had committed to be a lender under the May 2023 Secured Line of Credit Agreement for an aggregate loan of $2.65 million, and as of September 11, 2023, Excel had not loaned any funds under the May 2023 Secured Line of Credit. Pursuant to the terms of a Pay Off Letter Agreement with Excel dated September 12, 2023, we refinanced the outstanding principal and interest of the Excel $2.2M Line of Credit (as defined below) to be included as part of the obligations of the May 2023 Secured Line of Credit Agreement. As a result, as of September 12, 2023, Excel had loaned $2,266,733 under the May 2023 Secured Line of Credit Agreement and received a warrant to purchase 209,398 shares of our Common Stock. See “—Excel $2.2M Line of Credit.”
As of December 14, 2023, the outstanding principal and interest on Excel’s portion of the May 2023 Secured Line of Credit was $2,328,617 (the “Excel May 2023 Secured Line of Credit Pay Off Amount”) of the total aggregate principal and interest outstanding under the May 2023 Secured Line of Credit of $3,262,817. On December 14, 2023, we entered into a Note Conversion Agreement with Excel (the “Excel May 2023 Secured Line of Credit Note Conversion Agreement”) pursuant to which Excel agreed to convert the Excel May 2023 Secured Line of Credit Amount owed under the May 2023 Secured Line of Credit Agreement into 2,910,771 shares of our Common Stock, par value $0.0001 per share, at a conversion price per share of $0.80. The Excel May 2023 Secured Line of Credit Note Conversion Agreement contains customary representations, warranties, agreements and obligations of the parties. Additionally, pursuant to a Warrant Reprice Letter Agreement entered into by Excel on December 14, 2023, the per share warrant exercise price of the Excel warrant for 209,398 shares of our Common Stock was repriced to $0.80 per warrant share and immediately exercised, and the net proceeds of $167,518.40 were delivered to the Company. See “ – Repricing and Exercise of Certain Warrants.”
On December 31, 2023, one of the remaining lenders under the May 2023 Secured Line of Credit converted $101,699.83 in outstanding principal and interest into 127,124 shares of our Common Stock at a conversion price per share of $0.80. As a result, as of December 31, 2023, a total principal amount of $800,000 remained on the May 2023 Secured Line of Credit, and there were outstanding warrants for a total of 83,142 warrant shares that have been issued to the remaining lenders in connection with the May 2023 Secured Line of Credit.