Financing Arrangements

12 Months Ended

Dec. 31, 2023

Debt Disclosure [Abstract]

Financing Arrangements

4. Financing arrangements

2021 Credit Facility

In January 2021, the Company entered into a Credit Agreement which provides for a revolving credit facility (2021 Credit Facility) under which the Company may borrow up to an aggregate amount of $50.0 million. In March 2023, the Company amended the 2021 Credit Agreement (collectively, the 2021 Credit Agreement). The 2021 Credit Agreement will terminate and any outstanding borrowings become due and payable on the earlier of (i) January 2027 and (ii) unless the Company has cash in a specified deposit account in an amount equal to or greater than the amount required to repay the Company’s 1.25% convertible senior notes due November 2025, 91 days prior to the maturity date of such convertible notes.

The amount that may be borrowed under the 2021 Credit Agreement may be based on a customary borrowing base calculation if the Company’s Asset Coverage Ratio is at any time less than 1.50. The Asset Coverage Ratio is defined as the ratio of (i) the sum of (a) the Company’s cash and cash equivalents in the United States plus specified percentages of other qualified debt investments (Qualified Cash) plus (b) specified percentages of the net book values of the Company’s accounts receivable and certain inventory to (ii) $50.0 million.

Borrowed funds accrue interest at the greater of (i) a per annum rate equal to the base rate plus a margin of from 0.50% to 1.00% depending on the Company’s Asset Coverage Ratio or (ii) a per annum rate equal to the Secured Overnight Financing Rate plus a 10 basis point premium and a margin of from 1.50% to 2.00% depending on the Company’s Asset Coverage Ratio. The Company is required to pay a commitment fee on the unused portion of the 2021 Credit Facility of 0.25% per annum. Amounts owed under the 2021 Credit Agreement are guaranteed by certain of the Company’s United States subsidiaries and secured by a first priority security interest in substantially all of the assets of the Company and certain of its subsidiaries (other than intellectual property, which is subject to a negative pledge restricting grants of security interests to third parties).

The 2021 Credit Agreement contains customary representations, warranties, and affirmative and negative covenants. The negative covenants include restrictions on the incurrence of liens and indebtedness, certain investments, dividends, stock repurchases, and other matters, all subject to certain exceptions. In addition, the Company is required to maintain Liquidity (the sum of unused availability under the credit facility and the Company’s Qualified Cash) of at least $55.0 million (of which at least $40.0 million shall be attributable to Qualified Cash), or, if the borrowing base is then in effect, minimum unused availability under the credit facility of at least $10.0 million. The 2021 Credit Agreement also includes customary events of default that include, among other things, non-payment of principal, interest or fees, inaccuracy of representations and warranties, violation of certain covenants, cross default to certain other indebtedness, bankruptcy and insolvency events, material judgments and change of control. Upon an event of default, the lender may, subject to customary cure rights, require the immediate payment of all amounts outstanding.

At December 31, 2023, the Company was in compliance with all financial covenants contained in the 2021 Credit Agreement and has made no borrowings from the 2021 Credit Facility to date. However, there is an outstanding

letter of credit under the 2021 Credit Agreement of $5.2 million for certain duty-related requirements. This was not collateralized by any cash on hand.

Convertible Notes

2025 Convertible Notes

In November 2020, the Company issued $125.0 million aggregate principal amount of 1.25% Convertible Senior Notes due 2025 and granted an option to the initial purchasers to purchase up to an additional $18.8 million aggregate principal amount of the 2025 Notes to cover over-allotments, of which $18.8 million was subsequently exercised during November 2020, resulting in a total issuance of $143.8 million aggregate principal amount of the 2025 Notes. The 2025 Notes are senior, unsecured obligations of the Company and mature on November 15, 2025, unless earlier repurchased or converted into shares of Class A common stock under certain circumstances. The 2025 Notes are convertible into cash, shares of the Company’s Class A common stock, or a combination thereof, at the Company’s election, at an initial conversion rate of 107.1984 shares of Class A common stock per $1,000 principal amount of the 2025 Notes, which is equivalent to an initial conversion price of approximately $9.3285 per share of common stock, subject to adjustment. The Company pays interest on the 2025 Notes semi-annually in arrears on May 15 and November 15 of each year.

The Company may redeem all or any portion of the 2025 Notes on or after November 20, 2023 for cash if the last reported sale price of the Company’s common stock has been at least 130% of the conversion price then in effect for 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 the redemption notice, at a redemption price equal to 100% of the principal amount of the 2025 Notes to be redeemed, plus accrued interest and unpaid interest to, but excluding the redemption date. No sinking fund is provided for the 2025 Notes. The indenture includes customary terms and covenants, including certain events of default after which the 2025 Notes may be due and payable immediately.

Holders have the option to convert the 2025 Notes in multiples of $1,000 principal amount at any time prior to August 15, 2025, but only in the following circumstances:

•during any calendar quarter beginning after the calendar quarter ending on March 31, 2021, if the last reported sale price of Class A common stock for at least 20 trading days (whether or not consecutive) during the last 30 consecutive trading days of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price of the 2025 Notes on each applicable trading day;

•during the five-business day period following any five consecutive trading day period in which the trading price for the 2025 Notes is less than 98% of the product of the last reported sale price of Class A common stock and the conversion rate for the 2025 Notes on each such trading day;

•if the Company calls any or all of the 2025 Notes for redemption, at any time prior to the close of business on the scheduled trading day immediately before the redemption date; or

•upon the occurrence of specified corporate events.

At any time on or after August 15, 2025 until the second scheduled trading day immediately preceding the maturity date of the 2025 Notes on November 15, 2025, a holder may convert its 2025 Notes, in multiples of $1,000 principal amount. Holders of the 2025 Notes who convert their 2025 Notes in connection with a make-whole fundamental change (as defined in the indenture) are, under certain circumstances, entitled to an increase in the conversion rate. In addition, in the event of a fundamental change prior to the maturity date, holders will, subject to certain conditions, have the right, at their option, to require the Company to repurchase for cash all or part of the 2025 Notes at a repurchase price equal to 100% of the principal amount of the 2025 Notes to be repurchased, plus accrued and unpaid interest up to, but excluding, the repurchase date. During the year ended December 31, 2023, the conditions allowing holders of the 2025 Notes to convert were not met.

In connection with the offering of the 2025 Notes, the Company paid $10.2 million to enter into privately negotiated capped call transactions with certain financial institutions (Capped Calls). The Capped Calls have an initial strike price of $9.3285 per share, which corresponds to the initial conversion price of the 2025 Notes. The Capped Calls cover, subject to anti-dilution adjustments substantially similar to those applicable to the conversion

rate of the 2025 Notes, the number of Class A common stock initially underlying the 2025 Notes. The Capped Calls are generally expected to reduce potential dilution to the Company’s Class A common stock upon any conversion of the 2025 Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of converted 2025 Notes, as the case may be, with such reduction and/or offset subject to a cap, initially equal to $12.0925, and is subject to certain adjustments under the terms of the Capped Call transactions. The Capped Calls will expire in November 2025, if not exercised earlier.

The Capped Calls are subject to adjustment upon the occurrence of specified extraordinary events affecting the Company, including merger events, tender offers, and announcement events. In addition, the Capped Calls are subject to certain specified additional disruption events that may give rise to a termination of the Capped Calls, including nationalization, insolvency or delisting, changes in law, failures to deliver, insolvency filings and hedging disruptions. For accounting purposes, the Capped Calls are separate transactions, and not part of the terms of the 2025 Notes. As these transactions meet certain accounting criteria, the Capped Calls are recorded in stockholders’ equity as a reduction to additional paid-in capital and will not be remeasured as long as they continue to meet certain accounting criteria.

2022 Convertible Notes

In April 2017, the Company issued $175.0 million aggregate principal amount of 3.50% Convertible Senior Notes due 2022 (2022 Notes), which were repaid in full by their April 15, 2022 maturity date. The 2022 Notes were senior, unsecured obligations of the Company that could be converted into cash, shares of the Company’s Class A common stock, or a combination thereof, at the Company’s election, based on conversion rates as defined in the indenture. Concurrently with the November 2020 issuance of the 2025 Notes, the Company used $56.2 million of the net cash proceeds from the 2025 Notes to repurchase $50.0 million in aggregate principal amount of the 2022 Notes through a single, privately negotiated transaction. On April 15, 2022, the Company repaid the remaining $125.0 million of principal and $2.2 million of accrued interest in cash to the debt holders to fully settle the 2022 Notes on the maturity date.

Accounting for the 2022 and 2025 Convertible Notes

Pre adoption of ASU 2020-06

The 2022 and 2025 Convertible Notes were separated into liability and equity components for accounting purposes. The carrying amounts of the liability component were initially calculated by measuring the fair value of similar liabilities that do not have associated convertible features. The carrying amounts of the equity component representing the conversion option were determined by deducting the fair value of the liability component from the par value of the respective Convertible Senior Notes. This difference represents the debt discount that was amortized to interest expense over the respective terms of the 2022 Notes and 2025 Notes using the effective interest rate method. Upon issuance, the carrying amounts of the liability component from the issuance of the 2022 Notes and the 2025 Notes of $128.3 million and $106.9 million, respectively were recorded in long-term debt on the Consolidated Balance Sheets. The carrying amounts of the equity component representing the conversion option was determined to be $46.7 million and $36.9 million for the 2022 Notes and 2025 Notes, respectively, upon issuance. The equity component was recorded in additional paid-in-capital and was not remeasured so long as it continued to meet the conditions for equity classification.

The liability component was accreted over the debt term up to the face value of the 2022 Notes of $175.0 million and 2025 Notes of $143.8 million, which resulted in non-cash interest expense being recognized in the Consolidated Statements of Operations. The accretion of the 2022 Notes and 2025 Notes to par to long-term debt was amortized into interest expense over the term of the 2022 Note and 2025 Notes using an effective interest rate of approximately 10.5% and 7.5%, respectively.

In accounting for the debt issuance costs of $5.7 million and $4.7 million related to the 2022 Notes and 2025 Notes, respectively, the Company allocated each of the total amounts incurred to the liability and equity components of the 2022 Notes and 2025 Notes based on their relative values. Issuance costs attributable to the liability component of the 2022 Notes were $4.2 million upon issuance and were amortized, along with the debt discount, to interest expense over the contractual term of the 2022 Notes at an effective interest rate of 10.5%. Issuance costs attributable to the liability component of the 2025 Notes were $3.5 million upon issuance and were amortized, along with the debt discount, to interest expense over the contractual term of the 2025 Notes at an

effective interest rate of 7.5%. Issuance costs attributable to the equity component were $1.5 million and $1.2 million for the 2022 Notes and 2025 Notes, respectively, and were netted against the equity component representing the conversion option in additional paid-in-capital.

Post adoption of ASU 2020-06

On January 1, 2022, the Company adopted ASU 2020-06 based on the modified retrospective transition method. Under such transition, prior period information has not been retrospectively adjusted. Upon adoption of ASU 2020-06, the Company is no longer recording the conversion feature of its 2022 Notes and 2025 Notes in equity. Instead, the Company combined the previously separated equity component with the liability component, which together are now classified as debt, thereby eliminating the subsequent amortization of the debt discount as interest expense. Similarly, the portion of debt issuance costs previously allocated to equity was reclassified to debt and amortized as interest expense. Accordingly, the Company recorded a decrease to additional paid-in-capital of $78.2 million, a decrease to accumulated deficit of $47.1 million, and an increase to the debt balance of the 2022 Notes and 2025 Notes of $2.3 million and $28.8 million, respectively. In addition, the Company recorded the reversal of U.S. deferred tax liabilities (net) of $7.3 million associated with the 2022 Notes and 2025 Notes upon the adoption of ASU 2020-06, with a corresponding decrease to accumulated deficit for the same amount.

2022 Convertible Notes

For the year ended December 31, 2023, 2022, and 2021, the Company recorded interest expense of zero, $1.3 million, and $4.4 million for contractual coupon interest, and zero, $0.2 million, and $0.6 million for amortization of debt issuance costs. As of December 31, 2022, the effective interest rate, which is calculated as the contractual interest rate adjusted for the debt issuance costs, was 1.2%. For the year ended December 31, 2023, 2022, and 2021, the Company recorded zero, zero, and $7.8 million respectively, for amortization of debt discount.

2025 Convertible Notes

In November 2023, the Company repurchased $50.0 million in aggregate principal amount of the 2025 Notes in exchange for $46.3 million cash through an individual, privately negotiated transaction. The repurchase was accounted for as a debt extinguishment. The carrying value of the portion of the 2025 Notes repurchased was $49.4 million, and the Company recognized a gain on the debt extinguishment of $3.1 million, which was recorded in the fourth quarter of 2023 within other income (expense), net, on the Company's Consolidated Statements of Operations.

As of December 31, 2023 and 2022, the outstanding principal on the 2025 Notes was $93.8 million and $143.8 million, respectively, the unamortized debt issuance cost was $1.2 million and $2.8 million, respectively, and the net carrying amount of the liability was $92.6 million and $141.0 million, respectively, which was recorded as long-term debt within the Consolidated Balance Sheets. For the year ended December 31, 2023, 2022, and 2021, the Company recorded interest expense of $1.7 million, $1.8 million, and $1.8 million respectively, for contractual coupon interest, and $0.9 million, $1.0 million, and $0.7 million, respectively, for amortization of debt issuance costs. As of December 31, 2023, and 2022, the effective interest rate, which is calculated as the contractual interest rate adjusted for the debt issuance costs, was 2.8% and 1.9%, respectively. For the year ended December 31, 2023, 2022, and 2021, the Company recorded zero, zero, and $6.4 million respectively, for amortization of the debt discount.