Operating Activities
Net cash used in operating activities was $426,888 for the six months ended December 31, 2023 and resulted primarily from an increase in accounts receivable of $681,502 and an increase in deferred revenue of $241,545, partially offset by a decrease in prepaid royalties of $121,100.
Net cash provided by operating activities was $1,023,585 for the six months ended December 31, 2022 and resulted primarily from a decrease in prepaid royalties of $805,436, an increase in fair value of vested restricted common stock of $482,327 and an increase in deferred revenue of $428,999, partially offset by a decrease in accounts payable and accrued expenses of $974,931.
Investing Activities
Net cash used in investing activities was $10,079,509 for the six months ended December 31, 2023 and resulted primarily from the payment for the Scite acquisition of $7,305,493 and the payment for the ResoluteAI acquisition of $2,718,253.
Net cash used in investing activities was $316,326 for the six months ended December 31, 2022 and resulted primarily from the payment for non-refundable deposit for asset acquisition of $297,450.
Financing Activities
Net cash used in financing activities was $346,943 for the six months ended December 31, 2023 and resulted from the payment of contingent acquisition consideration of $278,195 and the repurchase of common stock of $68,748.
Net cash used in financing activities was $48,729 for the six months ended December 31, 2022 and resulted from the repurchase of common stock of $48,729.
We entered into a Loan and Security Agreement with Silicon Valley Bank (“SVB”) on July 23, 2010, which, as amended, provides for a revolving line of credit for the lesser of $2,500,000, or 80% of eligible accounts receivable. The line of credit matures on February 28, 2024, and is subject to certain financial and performance covenants with which we were in compliance as of December 31, 2023. Financial covenants include maintaining an adjusted quick ratio of unrestricted cash and net accounts receivable, divided by current liabilities plus debt less deferred revenue of at least 1.15 to 1.0. The line of credit bears interest at an annual rate equal to the greater of 1% above the prime rate and 5.0%. The interest rate on the line of credit was 9.5% as of December 31, 2023. The line of credit was secured by our consolidated assets.
There were no outstanding borrowings under the line as of December 31, 2023 and June 30, 2023, respectively. As of December 31, 2023, there was approximately $2,426,000 of available credit. On March 27, 2023, First Citizens BancShares, Inc. (“FCB”) entered into an agreement with the Federal Deposit Insurance Corporation (FDIC) to purchase all of the assets and liabilities of SVB. We have confirmed that the Loan and Security Agreement remains in effect post this transaction and that, we continue to have access to the revolving line of credit.
SVB Bridge Bank agreed that we can lower our cash balance threshold requirement associated with the SVB LSA, reducing the required balances of its and its subsidiaries’ primary operating and other accounts with SVB, and we continue to evaluate the SVB LSA. We have established additional banking relationships with Bank of America, N.A. and PNC Bank, N.A. At December 31, 2023, we held cash at Bank of America, N.A. of $124,044 and at PNC Bank, N.A. of $136,730.
Subsequent to September 30, 2023, FCB informed us of certain defaults under the SVB LSA resulting from our violation of certain covenants regarding retaining operating cash with SVB, obtaining deposit account control agreements with respect to such accounts and failing to maintain the required adjusted quick ratio. We became aware of additional technical defaults following FCB’s outreach, and such defaults substantially related to our moves to promptly diversify its cash position following the collapse of Silicon Valley Bank in March of 2023. On November 14, 2023, we entered into a