Long-Term Debt
Long-term debt consists of the following (in thousands):
December 31,
20242023
Convertible notes$– $75,099 
Revolving line of credit– – 
Total debt– 75,099 
Less: unamortized debt discount– (10,440)
Less: unamortized debt issuance costs– (211)
Long-term debt, net$– $64,448 
The Company recorded interest expense of $3.6 million, $8.8 million, and $6.2 million for the years ended December 31, 2024, 2023, and 2022, respectively, of which, $1.1 million, $3.3 million, and $2.6 million was related to the amortization of the debt discount and issuance costs, respectively.
Convertible Notes
On March 24, 2022 (Initial Closing), the Company issued convertible unsecured subordinated promissory notes (notes or convertible notes) to certain investors, including certain related parties and a then officer of the Company (see Note 15 – Related Parties), in an aggregate principal amount of
$75.0 million with a maturity date of March 24, 2027. Up to but not including the date that is 18 months after the Initial Closing, the convertible notes bore interest at a rate of 6.00% per annum, payable quarterly in cash or as payment-in-kind at the Company’s election. Thereafter, subject to certain exceptions, the convertible notes bore interest at a rate of (A) the greater of (x) the three-month Secured Overnight Financing Rate and (y) 1.00% plus (B) 5.00%, payable quarterly in cash.
The Company determined that certain conversion provisions embedded in the convertible notes represented contingent exchange features that qualified as embedded derivatives under ASC 815, Derivatives and Hedging. The qualifying features were collectively bifurcated from the debt host and recorded as a derivative liability in the balance sheets. The derivative liability was accounted for on a fair market value basis. The initial value of the derivative liability at issuance was $16.1 million with the offset recorded as a discount to the notes. Changes in fair value were recognized in other expense, net, in the statements of operations. The debt discount was amortized to interest expense over the contractual term of the debt using the straight-line method which approximates the effective interest method. Refer to Note 7 – Fair Value Measurements for further discussion of the valuation of the derivative liability.
Concurrently upon the closing of the IPO, the $75.1 million of convertible notes automatically converted into 1,177,087 shares of the Company’s Class A common stock. The conversion was accounted for as a debt extinguishment, resulting in the recognition of a $9.6 million loss on extinguishment calculated as the difference between the fair value of the shares issued and the carrying value of the notes and the embedded derivative liability. Immediately prior to the extinguishment, a $1.4 million loss was recognized from the change in fair value of the embedded derivative liability.
2021 Credit Facility
On November 3, 2021, the Company executed a $50.0 million revolving line of credit with Silicon Valley Bank (as amended, the 2021 Credit Facility). Borrowings under the 2021 Credit Facility bear interest at a floating annual rate equal to the greater of (i) an applicable floor rate that ranges from 2.25% to 3.0% based on the Company’s average liquidity position as defined in the 2021 Credit Facility and (ii) the prime rate less a margin that ranged from 0.25% to 1.0% based on the Company’s average liquidity position as defined in the 2021 Credit Facility. In addition, the Company pays an unused revolving line facility fee of 0.25% per year on the average monthly unused amount of commitments under the 2021 Credit Facility.
During the year ended December 31, 2024 and 2023, the Company had no borrowings under the 2021 Credit Facility. The Company terminated the 2021 Credit Facility on December 5, 2024.
2024 Credit Facility
On December 5, 2024, the Company, as borrower, entered into a Credit Agreement with Bank of America, N.A., as administrative agent, swingline lender, and L/C issuer, and certain other institutional lenders (2024 Credit Facility). The 2024 Credit Facility, which matures on December 5, 2029, provides the Company with revolving commitments in an aggregate principal amount of $100.0 million, with a letter of credit sub-facility of up to $10.0 million and with a swingline loan sub-facility of up to $10.0 million. The obligations of the Company under the 2024 Credit Facility are secured by a lien on all of the assets of the Company. The 2024 Credit Facility also allows the Company to request incremental revolving commitments of up to $100.0 million.
Loans under the 2024 Credit Facility bear interest through maturity at a variable rate based upon, at the Company’s option, an annual rate of either a Base Rate or a SOFR rate, plus an applicable margin (Base Rate Loan and Term SOFR Loan, respectively). The Base Rate is defined as a fluctuating rate of interest per annum equal to the highest of (1) the federal funds rate plus 0.50%, (2) Bank of America N.A.’s prime rate, and (3) Term SOFR plus 1.00%. The applicable margin is defined as a rate between 0.75% to 1.25% for Base Rate Loans and between 1.75% and 2.25% for Term SOFR Loans, depending on the Consolidated Net Leverage Ratio as defined in the 2024 Credit Facility. The 2024 Credit Facility
bears a commitment fee ranging from 0.30% to 0.40% payable quarterly in arrears based on undrawn amounts.
The 2024 Credit Facility contains customary affirmative and negative covenants and restrictions, including limitations on additional indebtedness, creation of liens, restricted payments, investments and certain transactions with affiliates. The Company is also subject to financial covenants to maintain a minimum Consolidated Interest Coverage Ratio of 3.0 to 1.0 and a maximum Consolidated Net Leverage Ratio of 3.0 to 1.0. In addition, the 2024 Credit Facility contains other customary covenants, representations and warranties, and events of default.
As of December 31, 2024, the Company had no outstanding borrowings under the 2024 Credit Facility and availability of $99.0 million, which is net of a $1.0 million outstanding letter of credit related to an office space lease. Refer to Note 16 – Commitments and Contingencies for further discussion of the Company’s letters of credit.

About Debt Disclosures

Debt disclosures detail a company's borrowing structure — the types of instruments, interest rates, maturity schedule, and covenant restrictions that define its financial obligations and flexibility. This section is essential for assessing refinancing risk, interest rate exposure, and the margin of safety against financial distress.

Key signals: the maturity schedule reveals concentration risk — large maturities within 1-2 years during tight credit markets can force dilutive refinancing or asset sales. Compare the fair value of debt against carrying amount to gauge whether the market views the company's credit risk differently than the balance sheet suggests. Watch covenant compliance disclosures for tightening cushions, especially leverage and interest coverage ratios. Variable-rate debt exposure quantifies sensitivity to interest rate changes. Secured versus unsecured mix affects recovery rates and future borrowing capacity. Compare net debt-to-EBITDA against industry peers and covenant limits to assess financial health.