Long-term debt consisted of the following (in thousands):


	June 30, 2024			December 31, 2023
Convertible Promissory Note	$	50,000		$	50,000
Less: unamortized debt discount and issuance costs		(13,960	)		(18,430	)
Long-term debt, net of unamortized debt discount and issuance costs	$	36,040		$	31,570

During the three months ended June 30, 2024, and 2023, the Company recorded amortization of $2.2 million and $1.0 million, respectively, to interest expense pertaining to debt discount and issuance costs. During the six months ended June 30, 2024, and 2023, the Company recorded amortization of $4.5 million and $1.0 million, respectively, to interest expense pertaining to debt discount and issuance costs. The amortization associated with the Convertible Promissory Note, primarily consists of the debt discount that was recorded as a result of the bifurcation of the conversion option at the time of the Business Combination. See below in this note for further information on the conversion option bifurcation for the Convertible Promissory Note, as defined below.

On January 9, 2023, the Company entered into the Note Purchase Agreement (“Note Purchase Agreement”) with L1 Energy Capital Management S.a.r.l. (“L1 Energy”) pursuant to which the Company issued the Convertible Promissory Note in the aggregate principal amount of $50.0 million (the “Convertible Promissory Note”). Outstanding borrowings under the Convertible Promissory Note bears interest at a rate of 5.0% per year. The principal amount of the Convertible Promissory Note is due at the maturity date of January 9, 2026, and interest is payable semiannually. As of June 30, 2024, there was $1.2 million of accrued interest in the condensed consolidated balance sheet.

Under the terms of the Note Purchase Agreement, the Convertible Promissory Note may be converted at the option of the note holder into the Company’s common stock or an equivalent equity instrument resulting from a public company event. The conversion price is based on a pre-money valuation divided by the aggregate number of the Company’s outstanding shares at the issuance date and adjusted for any cash dividends paid on the Company’s capital stock. The conversion price and number of conversion shares are subject to standard anti-dilution adjustments. Upon a change of control event the note holder may (i) convert the Convertible Promissory Note immediately prior to the event into the Company’s common stock at a conversion price equal to the lesser of the Convertible Promissory Note’s original conversion price or the price per share of the Company’s common stock implied by the change of control event transaction agreement or (ii) require the redemption of the Convertible Promissory Note in cash, including the payment of a make-whole amount of all unpaid interest that would have otherwise been payable had the Convertible Promissory Note remained outstanding through the maturity date. The Company’s obligations under the Note Purchase Agreement may be accelerated, subject to customary grace and cure periods, upon the occurrence of an event of default. The Note Purchase Agreement defines events of default as the occurrence of any one of the following; 1) a default in payment of any part of principal or unpaid accrued interest on the Convertible Promissory Note when due and payable; 2) the Company issues a written statement that it is unable to pay its debts as they become due, or the Company files a voluntary petition for bankruptcy or insolvency proceeding, the Company, or its directors or majority shareholders take action looking to the dissolution or liquidation of the Company; 3) the involuntary bankruptcy of the Company defined as the commencement of any proceeding against the Company seeking any bankruptcy reorganization; 4) the Company defaults on any of its performance obligations under the Note Purchase Agreement; 5) any material portion of the assets of the Company or any subsidiary of the Company is seized or a levy is filed against such assets; 6) a default that remains uncured on any other agreement evidencing the indebtedness of the Company or its subsidiaries for an amount of $10 million or more whose terms allow for the acceleration of the repayment of such indebtedness due to the consummation of the transactions contemplated in this Note Purchase Agreement.

As a result of the Business Combination, the conversion options were bifurcated and accounted for as derivatives. Upon recognition, the Company recorded the conversion options at fair value and associated debt discount of $23.5 million. As of June 30, 2023, the fair value of the conversion options was remeasured to $61.8 million, and the Company recorded a $38.3 million change in

fair value of derivative liability on the Company’s condensed consolidated statement of operations and comprehensive loss for the three and six months ended June 30, 2023.

On September 24, 2023, the Company and L1 Energy entered into the Convertible Note Amendment which modified the conversion terms of the Convertible Promissory Notes. As a result, the conversion options no longer met the criteria to be bifurcated into a convertible note derivative liability; instead, the conversion options were reclassified to equity under ASC Topic 815, Derivatives and Hedging.

Future aggregate principal maturities of long-term debt are as follows as of June 30, 2024 (in thousands):


Remainder of 2024	$	—
2025		—
2026		50,000
2027		—
2028		—
Thereafter		—
	$	50,000

In January 2023, concurrently with the Convertible Promissory Note transaction, the Company repaid the Series 2022-1 Notes issued in January 2022 with a principal amount of $25.0 million at a fixed interest rate of 5.5% per year (“Series 2022-1 Notes”) in full with the proceeds from the Convertible Promissory Note and wrote off $0.2 million of unamortized debt issuance costs related to the previously outstanding Series 2022-1 Notes, which are included in loss on debt extinguishment on the condensed consolidated statements of operations and comprehensive loss.