interest at an annual rate equal to the greater of (i) one-half percent (0.5%) above the prime rate or (ii) 4.0% and mature on March 11, 2024. Borrowings are collateralized by substantially all of the Company’s property, excluding intellectual property, which is subject to a negative pledge. The 2021 Revolver subjects the Company to various customary covenants, including requirements as to financial reporting and financial covenants (including an unrestricted minimum cash level of $10.0 million), and restrictions on the Company’s ability to dispose of its business or property, to change its line of business, to liquidate or dissolve, to enter into any change in control transaction, to merge or consolidate with any other entity or to acquire all or substantially all the capital stock or property of another entity, to incur additional indebtedness, to incur liens on the Company’s property, to pay any dividends or make other distributions on capital stock other than dividends payable solely in capital stock, to redeem capital stock, to enter into in-bound licensing agreements, to engage in transactions with affiliates, and to encumber the Company’s intellectual property. Events of default under the 2021 Revolver include failure to make payments when due, insolvency events, failure to comply with covenants or material adverse events with respect to the Company. Upon the occurrence of an event of default and until such event of default is no longer continuing, the annual interest rate will be 5.0% above the otherwise applicable rate.
The terms of the 2021 Revolver required that the existing term loan outstanding under the 2019 Loan be repaid with an advance under the line of credit. Accordingly, on March 11, 2021, the Company used $14.5 million of proceeds from the revolving line of credit to repay all amounts then due on the existing term loan. The Company accounted for the transaction as a debt extinguishment and recorded a loss on extinguishment of $0.2 million, which was included in interest expense in the consolidated statements of operations and comprehensive loss.
On November 2, 2022, the Company satisfied in full all of its outstanding obligations and voluntarily terminated the 2021 Revolver. The Company did not incur any early termination penalties in connection with the termination of the 2021 Revolver. The amount outstanding under the 2021 Revolver was fully repaid in October 2022 and no amounts were outstanding upon termination of the 2021 Revolver.
On November 2, 2022, we entered into a Loan and Security Agreement (the “2022 Revolver”), by and between, 908 Devices Inc., as borrower, and Silicon Valley Bank (“SVB”), as lender.
The 2022 Revolver provides for a revolving line of credit of up to $35.0 million. We are permitted to make interest-only payments on the revolving line of credit through November 2, 2025, at which time all outstanding indebtedness shall be immediately due and payable. The outstanding principal amount of any advance shall accrue interest at a floating rate per annum equal to the greater of (i) three and one-half percent (3.50%) and (ii) the “prime rate” as published in The Wall Street Journal for the relevant period minus one-half percent (0.50%). Our obligations under the 2022 Revolver are secured by substantially all of our assets, excluding our intellectual property, which is subject to a negative pledge. The revolving line of credit under the 2022 Revolver terminates on November 2, 2025.
As of March 31, 2023, there were no balances outstanding under the 2022 Revolver. As of December 31, 2022, the outstanding principal balance under the 2022 Revolver was $15.0 million, which was repaid in full on January 4, 2023. The interest rate applicable to borrowing under the 2022 Revolver was 7.0% as of December 31, 2022.
The 2022 Revolver also contains certain financial covenants, including a requirement that the amount of unrestricted and unencumbered cash minus advances under the 2022 Revolver, is not less than the amount equal to the greater of (i) $10.0 million or (ii) nine (9) months of cash burn. The 2022 Revolver contains customary representations and warranties, as well as certain non-financial covenants, including limitations on, among other things, our ability to change the principal nature of our business, dispose of our business or property, engage in any change of control transaction, merge or consolidate with any other entity or to acquire all or substantially all the capital stock or property of another entity, incur additional indebtedness or liens, pay dividends or make other distributions on capital stock, redeem our capital stock, engage in transactions with affiliates or otherwise encumber our intellectual property, in each case, subject to customary exceptions.
On March 10, 2023, SVB, one of our financial institutions, was closed by the California Department of Financial Protection and Innovation, which appointed the FDIC as receiver. Similarly, Signature Bank, one of our other financial institutions, was closed on March 12, 2023 by its New York charter authority. At the time of closing, the Company had substantially all of its cash and cash equivalents at SVB and Signature Bank, and all of its restricted cash of $0.2 million supporting two outstanding letters of credit at SVB.