14. DEBT

2027 Convertible Notes—In May 2022, the Company issued an aggregate of $115.0 million principal amount of convertible senior notes due in 2027 in a private offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”). The 2027 Notes consisted of $100.0 million initial placement and an over-allotment option that provided the initial purchasers of the 2027 Notes with the option to purchase an additional $15.0 million aggregate principal amount of the 2027 Notes, which was fully exercised. The 2027 Notes were issued pursuant to an indenture dated May 13, 2022. The net proceeds from the issuance of the 2027 Notes were $111.4 million, after deducting the initial purchasers’ discounts and commissions and our estimated offering expenses. The issuance costs will be treated as a debt discount for accounting purposes, which will be amortized into interest expense using the effective interest rate method over the term of the 2027 Notes.

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The 2027 Notes are senior unsecured obligations. The 2027 Notes accrue interest at a rate of 6.0% per annum, payable semi-annually in arrears on May 15 and November 15 of each year, beginning on November 15, 2022. The 2027 Notes will mature on May 15, 2027, unless earlier repurchased, redeemed or converted in accordance with their terms prior to such date.

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Before November 15, 2026, holders of the 2027 Notes will have the right to convert their 2027 Notes only upon the occurrence of certain events and during specified periods, including:

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From and after November 15, 2026, holders of the 2027 Notes may convert their 2027 Notes at any time at their election until the close of business on the second scheduled trading day immediately before the maturity date. The Company will settle conversions by paying or delivering cash and, if applicable, shares of its Class A common stock.

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The initial conversion rate is 601.5038 shares of Class A common stock per $1,000 principal amount of 2027 Notes, which represents an initial conversion price of approximately $1.66 per share of Class A common stock. The conversion rate is subject to customary adjustments for certain events as described in the indenture governing the 2027 Notes. In addition, if certain corporate events that constitute a “Make-Whole Fundamental Change” (as defined in the indenture governing the 2027 Notes) occur, then the conversion rate will, in certain circumstances, be increased for a specified period of time.

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The Company may redeem for cash all or any portion of the 2027 Notes, at the Company’s option, on or after May 20, 2025, and on or before the 40^th scheduled trading day immediately before the maturity date, but only if certain liquidity conditions are satisfied and the last reported sales price of the Company’s Class A common stock exceeds 130% of the conversion price then in effect on (i) each of at least 20 trading days, whether or not consecutive, during the 30 consecutive trading days ending on, and including, the trading day immediately before the date the Company sends the related redemption notice and (ii) the trading day immediately before the date the Company sends such notice.

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However, the Company may not redeem less than all of the outstanding 2027 Notes unless at least $100.0 million aggregate principal amount of 2027 Notes are outstanding and not called for redemption as of the time the Company sends the related redemption notice. The redemption price will be a cash amount equal to the principal amount of the 2027 Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date. In addition, calling any 2027 Note for redemption will constitute a Make-Whole Fundamental Change with respect to that 2027 Note, in which case the conversion rate applicable to the conversion of that 2027 Note will be increased in certain circumstances if it is converted after it is called for redemption.

If certain corporate events that constitute a “Fundamental Change” (as defined in the indenture governing the 2027 Notes) occur, then, subject to a limited exception for certain cash mergers, holders of the 2027 Notes may require the Company to repurchase their 2027 Notes at a cash repurchase price equal to the principal amount of the 2027 Notes to be repurchased, plus accrued and unpaid interest, if any, to, but excluding, the fundamental change repurchase date. The definition of Fundamental Change includes certain business combination transactions involving the Company and certain de-listing events with respect to the Company’s Class A common stock.

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The 2027 Notes are valued as a single liability measured at amortized cost, which approximates fair value, as no other features require bifurcation and recognition as derivatives. The following table presents the outstanding principal amount and carrying value of the 2027 Notes as of the date indicated (in thousands):

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The annual effective interest rate for the 2027 Notes was approximately 6.1%. Interest expense related to the 2027 Notes for the periods presented below are as follows (in thousands):

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Term Loan—In June 2018, the Company entered into a $20 million term loan for 36 months. The loan provided $10 million immediately funded with the additional $10 million available to be drawn in up to three draws of not less than $2 million for 12 months from close of the facility. The loan was interest-only for the full 36 months with the principal due at maturity in June 2021. The outstanding loan was paid in full in June 2021.

PPP Loans— In connection with the acquisition of EnvisionTEC, the Company acquired $1.2 million in Paycheck Protection Program (the “PPP”) loans. The PPP, established as part of the Coronavirus Aid, Relief and Economic Security Act, provided for loans to qualifying businesses. Under the terms of the CARES Act, PPP loan recipients could apply for forgiveness for all or a portion of the loan which is dependent upon the Company having initially qualified for the loan. Furthermore, the loan was subject to forgiveness to the extent loan proceeds are used for payroll costs, certain rents, utilities, and mortgage interest expense. The PPP loan had a maturity date of April 3, 2022 and an interest rate of 1%. On May 14, 2021, the outstanding loan balances were forgiven and the restricted cash that was held back from the initial purchase price in the event the loan was not forgiven was released to the seller. There is no outstanding PPP loan balance for EnvisionTEC as of December 31, 2021.

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Bank Debt—In connection with the acquisition of A.I.D.R.O., the Company acquired three loans (“Bank Loans”) totaling $1.1 million in aggregate. The Bank Loans have a term of 4.5 years and mature from September 2024 through September 2025, with interest rates ranging from 1.70% to 2.10%. Payments of principal and interest are made quarterly. During the year ended December 31, 2022, the Company paid $0.3 million and $0.6 million remains outstanding, and as of December 31, 2022, $0.3 million of the outstanding debt is recorded within current portion of long-term debt, net of deferred financing costs, and $0.3 million is recorded within long-term debt, net of current portion, in the consolidated balance sheets.

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Equipment Financing Agreement—In connection with the acquisition of Dental Arts Labs, the Company acquired a thirteen-month equipment financing agreement (“Financing Agreement”) in the amount of $0.5 million. The Financing Agreement provided for an advance payment of $0.5 million to secure equipment for the Company. Payments are made monthly under the Financing Agreement upon acceptance, which had not yet occurred as of December 31, 2021. Subsequent to December 31, 2021, the Company executed a delivery and acceptance certificate which commences payment. The financing agreement balance of $0.2 million is

recorded in current portion of long-term debt, net of deferred financing costs, in the consolidated balance sheets. The Financing Agreement will mature in June 2023.