8. Borrowings

Senior convertible notes – In March 2021, the Company issued $230.0 million aggregate principal amount of senior convertible notes (the “senior convertible notes”) in a private offering. The senior convertible notes were issued pursuant to an indenture, dated March 4, 2021 (the “Indenture”), between the Company and U.S. Bank National Association, as trustee. The senior convertible notes are general unsecured obligations of the Company and will mature on March 1, 2026, unless earlier converted, redeemed or repurchased by the Company. The senior convertible notes bear cash interest from March 4, 2021 at an annual rate of 2.50% payable semi-annually in arrears on March 1 and September 1 of each year, beginning on September 1, 2021.

On December 17, 2024, the Company entered into separate, privately negotiated exchange agreements (the "Exchange Agreements") with certain holders (the “Holders”) of the senior convertible notes. Under the terms of the Exchange Agreements, the Holders agreed to exchange an aggregate principal amount of approximately $193.7 million of the senior convertible notes in exchange for an aggregate of 26,749,559 shares of the Company’s common stock. In addition, pursuant to the exchange agreements, the Company made an aggregate cash payment of approximately $89.2 million to the Holders for additional exchange consideration. Immediately following the exchange, approximately $36.3 million in aggregate principal amount of the senior convertible notes remained outstanding.

The senior convertible notes are convertible at the option of the holders at any time prior to the close of business on the business day immediately preceding December 1, 2025, only under the following circumstances: (1) during any calendar quarter commencing after the calendar quarter ending on June 30, 2021 (and only during such calendar quarter), if the last reported sale price of the Company’s common stock, par value $0.01 per share, for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price for the senior convertible notes on each applicable trading day; (2) during the five business day period after any ten consecutive trading day period in which the trading price (as defined in the Indenture) per $1,000 principal amount of the senior convertible notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the common stock and the conversion rate on each such trading day; (3) if the Company calls such senior convertible notes for redemption, at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date, but only with respect to the senior convertible notes called (or deemed called) for redemption; or (4) upon the occurrence of specified corporate events as set forth in the Indenture. On or after December 1, 2025 until the close of business on the business day immediately preceding the maturity date, holders may convert all or any portion of their senior convertible notes at any time, regardless of the foregoing circumstances. Upon conversion, the Company will pay or deliver, as the case may be, cash, shares of common stock or a combination of cash and shares of common stock, at the Company’s election, in the manner and subject to the terms and conditions provided in the Indenture.

The initial conversion rate is 191.8281 shares of common stock per $1,000 principal amount of senior convertible notes (equivalent to an initial conversion price of approximately $5.21 per share of common stock). The initial conversion price of the senior convertible notes represents a premium of approximately 30% to the last reported sale price of the common stock on the Nasdaq Global Market on March 1, 2021. The conversion rate for the senior convertible notes is subject to adjustment under certain circumstances in accordance with the terms of the Indenture, but will not be adjusted for any accrued and unpaid interest. In addition, following certain corporate events that occur prior to the maturity date of the senior convertible notes or if the Company delivers a notice of redemption in respect of the senior convertible notes, the Company will, in certain circumstances, increase the conversion rate of the senior convertible notes

for a holder who elects to convert its senior convertible notes in connection with such a corporate event or convert its senior convertible notes called for redemption during the related redemption period (as defined in the Indenture), as the case may be.

The Company may redeem for cash all or any portion of the senior convertible notes, at its option, on or after March 6, 2024 and prior to the 36th scheduled trading day immediately preceding the maturity date, if the last reported sale price of common stock has been at least 130% of the conversion price for the senior convertible notes then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period (including the last trading day of such period) ending on, and including, the trading day immediately preceding the date on which the Company provides notice of redemption at a redemption price equal to 100% of the principal amount of the senior convertible notes to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date. If the Company elects to redeem less than all of the outstanding senior convertible notes, at least $75.0 million aggregate principal amount of senior convertible notes must be outstanding and not subject to redemption as of the relevant redemption notice date. No sinking fund is provided for the senior convertible notes.

If the Company undergoes a fundamental change (as defined in the Indenture), then, subject to certain conditions and except as described in the Indenture, holders may require the Company to repurchase for cash all or any portion of their senior convertible notes at a fundamental change repurchase price equal to 100% of the principal amount of the senior convertible notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date.

The Indenture includes customary covenants and sets forth certain events of default after which the senior convertible notes may be declared immediately due and payable.

If certain bankruptcy and insolvency-related events of default involving the Company (and not just any of its significant subsidiaries) occur, 100% of the principal of and accrued and unpaid interest on the senior convertible notes will automatically become due and payable. If an event of default with respect to the senior convertible notes, other than certain bankruptcy and insolvency-related events of default involving the Company (and not just any of its significant subsidiaries), occurs and is continuing, the trustee, by notice to the Company, or the holders of at least 25% in principal amount of the outstanding senior convertible notes by notice to the Company and the trustee, may, and the trustee at the request of such holders shall, declare 100% of the principal of and accrued and unpaid interest, if any, on all the senior convertible notes to be due and payable. Notwithstanding the foregoing, the Indenture provides that, to the extent the Company so elects, the sole remedy for an event of default relating to certain failures by the Company to comply with certain reporting covenants in the Indenture will, for the first 365 days after the occurrence of such an event of default consist exclusively of the right to receive additional interest on the senior convertible notes as set forth in the Indenture.

The Indenture provides that the Company shall not consolidate with or merge with or into, or sell, convey, transfer or lease all or substantially all of the consolidated properties and assets of the Company and its subsidiaries, taken as a whole, to, another person (other than any such sale, conveyance, transfer or lease to one or more of the Company’s direct or indirect wholly owned subsidiaries), unless: (i) the resulting, surviving or transferee person (if not the Company) is a corporation organized and existing under the laws of the United States of America, any State thereof or the District of Columbia, and such corporation (if not the Company) expressly assumes by supplemental indenture all of the Company’s obligations under the senior convertible notes and the Indenture; and (ii) immediately after giving effect to such transaction, no default or event of default has occurred and is continuing under the Indenture.

The Company’s net proceeds from the March 2021 offering were approximately $222.7 million, after deducting the initial purchasers’ discounts and commissions and the estimated offering expenses payable by the Company. As of June 30, 2025 and December 31, 2024, the unamortized debt issuance cost was $0.2 million and $0.3 million, respectively.

MidCap credit facility — In August 2019, the Company entered into the MidCap credit facility and borrowed the first advance of $40.0 million (“Tranche 1”) in August 2019 and the second advance of $10.0 million (“Tranche 2”) in December 2020. In April 2021, $10.0 million was prepaid. During the three months ended March 31, 2024, the Company made $5.0 million in principal payments on the MidCap credit facility. On April 1, 2024, the Company exercised its option to prepay in full all outstanding indebtedness.

Tranche 1 and Tranche 2 accrued interest at an annual rate equal to the lesser of (i) 8.25% and (ii) the one-month Secured Overnight Financing Rate ("SOFR") (subject to a one-month floor of 1.00%) plus 6.25%. Interest on each term loan advance was due and payable monthly in arrears. Principal on each term loan advance under Tranche 1 and Tranche 2 was payable in 24 equal monthly installments that began September 1, 2023.

In April 2024, the Company prepaid in full the remaining $28.3 million in principal and $0.2 million in accrued interest, and terminated all commitments and obligations under the MidCap credit facility that would have matured on August 1, 2025 in exchange for a payment of $31.6 million, including an exit fee of $2.8 million which is 7.00% of the initial Tranche 1 balance of $40.0 million, and a prepayment fee of $0.3 million which is 1.00% of principal prepaid. Additionally, unamortized debt discount and capitalized prepayment fees totaling $0.2 million were written off, resulting in a loss on early extinguishment of debt of $3.3 million included in loss on settlement of debt in the condensed consolidated statements of operations. In connection with the repayment of outstanding indebtedness by the Company, all liens, mortgages and security interests in any assets or property securing the obligations under the MidCap credit facility were automatically terminated and released and the Company was automatically released from all guarantees.

Mann Group convertible note — In August 2019, the Company issued a $35.0 million note that was convertible into shares of the Company’s common stock at $2.50 per share (the “Mann Group convertible note”) as part of a restructuring of its then existing indebtedness to Mann Group. On April 2, 2024, the Company and Mann Group agreed to discharge and terminate the Mann Group convertible note.

The Mann Group convertible note accrued interest at the rate of 2.5% per year on the principal amount, payable quarterly in arrears on the first day of each calendar quarter, with a maturity date of December 31, 2025.

As of April 2, 2024, the outstanding principal balance of the Mann Group convertible note plus accrued interest was $8.9 million and was convertible at Mann Group’s option into 3,554,198 shares of common stock of the Company. The Company and Mann Group agreed to terminate all outstanding indebtedness, rights and obligations under the Mann Group convertible note in exchange for (i) the Company’s issuance to Mann Group of 1,500,000 shares of the Company’s common stock converted at the contractual rate of $2.50 per share and (ii) the Company’s payment to Mann Group of $8.9 million, which represented the market value of 2,054,198 shares of common stock of the Company on April 2, 2024 to settle the remaining principal and interest of $5.1 million, after the conversion noted in (i) above. Termination of the Mann Group convertible note resulted in a loss on early extinguishment of debt of $3.7 million included in loss on settlement of debt in the condensed consolidated statements of operations.