offset by state taxes. We maintain a full valuation allowance on our net federal and state deferred tax assets as we have concluded that it is more likely than not that the deferred tax assets will not be realized. Liquidity and Capital Resources General As of March 31, 2022, our principal source of liquidity was cash and cash equivalents totaling $463.7 million, which was held for working capital purposes, as well as the available balance of our revolving line of credit, described further below. We have financed our operations primarily through sales of our equity securities, payments received from customers, and borrowings under our credit facility. On March 19, 2021, we completed our IPO, in which we issued and sold 20,700,000 shares of our Class A common stock at the public offering price of $25.00 per share. We received net proceeds of approximately $485.5 million after deducting underwriting discounts and commissions. We believe our existing cash and cash equivalents and amounts available under our outstanding credit facility will be sufficient to support our working capital and capital expenditure requirements for at least the next twelve months. Our future capital requirements will depend on many factors, including, but not limited to, our obligation to repay any balance under our credit facility if we were to borrow against the facility in the future, our platform revenue growth rate, receivable and payable cycles, and the timing and extent of investments in research and development, sales and marketing, and general and administrative expenses. Credit Facility In May 2012, we entered into a Loan and Security Agreement with Pacific Western Bank for a revolving line of credit with a maturity date of May 15, 2013, or the Loan Agreement. Since the Loan Agreement, we amended and restated the agreement in February 2020, and have executed subsequent amendments to extend the maturity date until June 30, 2022. Advances under the Formula Line bear interest equal to the greater of (A) 0.20% above Pacific Western Bank’s prime rate then in effect; or (B) 4.50%. Advances under the Non-Formula Line bear interest equal to the greater of (i) 0.75% above Pacific Western Bank’s prime rate then in effect; or (ii) 5.00%. Interest is due and payable monthly in arrears. We may prepay advances under the credit facility in whole or in part at any time without premium or penalty. In April 2021, we amended the Loan Agreement and exercised our option to increase our available line of credit from $25.0 million to $35.0 million. Additionally, we amended our minimum EBITDA and minimum net revenue covenants, which reset each annual period. In May 2021, we issued a letter of credit to DoorDash, Inc., or DoorDash, in the amount of $25.0 million in connection with our Restated Delivery Network Agreement. In August 2021, we amended our Loan Agreement to maintain minimum cash deposits with Pacific Western Bank equal to the lesser of $75.0 million or an amount equal to 50% of all of our cash deposits with any bank, and to extend certain reporting requirements from 30 to 45 days after each quarter end. In December 2021 and in connection with the Wisely Acquisition, we further amended our Loan Agreement to reflect Wisely LLC as an additional borrower. In January 2022, we further amended our Loan Agreement, or the Fourth Amendment, to extend the maturity date to May 12, 2022. In March 2022, we further amended our Loan Agreement, or the Fifth Amendment, to provide consent for our acquisition of Omnivore and to set compliance thresholds for 2022. In May 2022, we further amended our Loan Agreement, or the Sixth Amendment, to extend the maturity date to June 30, 2022. The foregoing description of the material terms of the Fourth Amendment, the Fifth Amendment, and the Sixth Amendment does not purport to be complete and is subject to, and is qualified in its entirety by, reference to the full terms of the Fourth Amendment and the Fifth Amendment, which we have filed as an exhibits to this Quarterly Report on Form 10-Q, and with respect to the Sixth Amendment, which we intend to file as an exhibit to our Quarterly Report on Form 10-Q for the quarter ended June 30, 2022. We refer to the Loan Agreement, as amended, as the “Amended Loan Agreement.” As of March 31, 2022 , we had $8.6 million available under the Amended Loan Agreement, after consideration of $25.0 million in our letter of credit to DoorDash and $1.4 million in our letter of credit on the lease of our headquarters. As of 34
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