There were no stock options exercised during the three months ended June 30, 2022 and 2021. Repurchases of shares of our Common Stock for employee taxes due on vesting of restricted stock units, net of employee stock purchases, resulted in approximately $36,000 and $29,000 of net cash used during the three months ended June 30, 2022 and 2021, respectively.
Three-year Term Note On February 4, 2019, we entered into a Note Purchase Agreement, by and among us, certain subsidiaries of us as guarantors, Goldman Sachs Specialty Lending Holdings, Inc., as collateral agent and any other Purchasers party thereto from time to time, in connection with the sale of senior secured notes of us in a private placement exempt from registration under the Securities Act of 1933, as amended. Under the Note Purchase Agreement, we sold to the Purchaser $30.0 million aggregate principal amount of senior secured notes (the “Notes”). The first interest payment on the Notes was on March 31, 2019. On October 1, 2020, pursuant to A&R Note Purchase Agreement, we increased the amount of borrowing under the Notes by $20.0 million to $50.0 million, and all outstanding Notes bear interest at the Adjusted (London Interbank Offer) LIBO Rate (as defined in the A&R Note Purchase Agreement) plus 8.75% per annum. The Notes do not amortize and the entire principal balance is due in a single payment on the maturity date. As of March 31, 2022, $51.0 million in borrowings were outstanding under the Notes, which includes the accrual for an exit fee to be paid at maturity or upon pre-payment. Pursuant to the First Amendment to the A&R Note Purchase dated as of May 13, 2021, the minimum consolidated liquidity requirement increased from $9.0 million to $12.0 million for the period from the Amendment Date to March 31, 2022, and $9.0 million thereafter. The financial covenants of the A&R Note Purchase Agreement require the Company not to exceed specified levels of Adjusted EBITDA losses relative to its financial model, beginning with the fiscal quarter ending September 30, 2021. As of March 31, 2022, we were not in compliance with the Adjusted EBITDA covenant contained in the A&R Note Purchase Agreement and did not cure such non-compliance by prepaying the Notes. As a result, we were in breach of the Adjusted EBITDA covenant as of May 27, 2022. On July 13, 2022 we entered into the A&R NPA Second Amendment with the Purchaser and the Collateral Agent, pursuant to which (i) the Purchaser and the Collateral Agent waived our breach of the Adjusted EBITDA covenant and (ii) the A&R Note Purchase Agreement has been amended to, among other things, add certain new covenants, including requirements that we use our commercially reasonable best efforts to raise at least $10 million through a sale of our common stock by September 14, 2022 and refinance the Notes by October 1, 2022. As of June 30, 2022, we are in compliance with the other covenants contained in the A&R Note Purchase Agreement, as amended by A&R NPA Second Amendment.
Paycheck Protection Program Loan On April 15, 2020, we applied for an unsecured PPP Loan in the principal amount of $2,610,200 under the Small Business Administration Paycheck Protection Program enabled by the Coronavirus Aid, Relief and Economic Security Act of 2020. On April 24, 2020, we entered into a promissory note with Western Alliance Bank. The Company received the full amount of the PPP Loan on April 24, 2020. In accordance with the requirements of the CARES Act, we used the proceeds from the PPP Loan to support fixed costs such as payroll costs, rent and utilities. On May 13, 2020, we repaid $660,200 of the PPP Loan in accordance with the Fourth Amendment to the Note Purchase Agreement between the Company and Goldman Sachs Specialty Lending Group, L.P.
The advance under the PPP Loan bore interest at a rate per annum of 1%.
In February 2021, the Company applied for forgiveness in full of the original balance of the PPP loan and the loan was forgiven in full on June 30, 2021. The Company received a refund of $660,200 and recorded these amounts within other income on the Company’s Condensed Consolidated Statements of Operations. Management accounted for forgiveness on the PPP Loan in accordance with ASC 470 and recorded a gain on extinguishment of debt on its condensed consolidated financial statements and related footnote disclosures, provided forgiveness be approved by the SBA.
Working Capital and Other Operating Assets and Liabilities Cash used for working capital was $2.8 million during the three months ended June 30, 2022, a decrease of $4.3 million from the cash used for working capital of $7.1 million during the three months ended June 30, 2021. These decreases in cash used for working capital and other operating assets and liabilities were primarily due to improved collections of accounts receivable, lower inventory purchases and lower warranty claims. Additionally, the change in accounts payable and accrued expenses was primarily due to increased accounts payable payments to vendors.
Evaluation of Ability to Maintain Current Level of Operations In connection with the preparation of these condensed consolidated financial statements for the three months ended June 30, 2022, management evaluated whether there were conditions and events, considered in the aggregate, that raised substantial doubt about our ability to meet obligations as they became due over the next twelve months from the date of issuance of our first quarter of Fiscal 2023 interim condensed consolidated financial statements. Management assessed that there were such conditions and events, including a history of recurring operating losses, negative cash flows from operating activities, the continued negative