Leases | 13. Leases The Company’s leases consist primarily of real estate, equipment and vehicle leases. The Company leases real estate for office, lab, warehouse and production space under noncancelable leases that expire at various dates through 2035, subject to the Company’s options to terminate or renew certain leases for an additional five to ten years . The Company leases vehicles under operating leases for certain employees and has fleet services agreements for service on these vehicles. The minimum lease term for each newly leased vehicle is 367 days with renewal options. The Company may terminate the vehicle lease after the minimum lease term upon thirty days’ prior notice. The Company also leases other equipment under noncancelable leases that expire at various dates through 2026. On January 1, 2013, the Company entered into finance lease arrangements with 65 Dan Road SPE, LLC, 85 Dan Road Associates, LLC, Dan Road Equity I, LLC and 275 Dan Road SPE, LLC for office and laboratory space in Canton, Massachusetts (the “Related-Party Leases”). 65 Dan Road SPE, LLC, 85 Dan Road Associates, LLC, Dan Road Equity I, LLC and 275 Dan Road SPE, LLC are related parties as the owners of these entities are also directors, former directors and / or stockholders of the Company. In August 2021, the Company purchased the building (the “275 Dan Road Building”) under the lease with 275 Dan Road SPE, LLC for $ 6,013 and the lease was terminated. The Company recorded an asset of $ 4,943 to buildings within property and equipment, net, to account for the purchase of the leased asset. The remaining three Related-Party Leases were set to terminate on December 31, 2022 and each contained a renewal option for a five-year period with a rental rate at the greater of (i) rent for the last year of the prior term, or (ii) the then fair market value. In November 2021, the Company exercised the option to extend the leases for an additional five years, and at such time, remeasured the right of use assets and lease liabilities based on its best estimate of the market rental rate in the renewal period and reassessed the classification for these leases. As a result, these leases were reclassified from finance leases to operating leases on the consolidated balance sheets as of December 31, 2021. In December 2022, the Company and the landlord finalized the market rental rate in the renewal period for these properties, resulting in an additional $ 8,060 to be recorded as variable lease expenses over the renewal period. Effective April 1, 2019, the Company agreed to accrue interest on accrued but unpaid lease obligations owed for rent in arrears to the owners of the buildings subject to the Related-Party Leases, at an interest rate equal to the rate charged under the 2019 Credit Agreement. The remaining accrued but unpaid lease obligation with respect to the 275 Dan Road Building was paid in five quarterly installments through January 3, 2023, and accordingly at March 31, 2024 and December 31, 2023, there is no remaining balance or accrued interest associated with the 275 Dan Road Building. The accrued but unpaid lease obligations as well as the related accrued interest with respect to the remaining three Related-Party Leases are shown below: March 31, December 31, 2024 2023 Principal portion of rent in arrears $ 5,273 $ 5,273 Accrued interest on accrued but unpaid lease obligations $ 2,448 $ 2,326 The accrued but unpaid lease obligations owed for rent in arrears on the three remaining Related-Party Leases was included in current portion of operating lease obligations on the condensed consolidated balance sheets, as of March 31, 2024 and December 31, 2023. The accrued interest on the accrued but unpaid lease obligations was included in accrued expenses and other current liabilities on the condensed consolidated balance sheets as of March 31, 2024 and December 31, 2023. The components of lease co st were as follows: Classification Three Months Ended March 31, 2024 2023 Finance lease Amortization of right-of-use assets COGS and SG&A $ 288 $ — Interest on lease liabilities Interest Expense 57 — Total finance lease cost 345 — Operating lease cost COGS, R&D, SG&A 2,203 2,291 Short-term lease cost COGS, R&D, SG&A 661 758 Variable lease cost COGS, R&D, SG&A 1,126 1,794 Total lease cost $ 4,335 $ 4,843 Supplemental balance sheet information related to finance l eases was as follows: March 31, 2024 December 31, 2023 Property and equipment, gross $ 3,454 $ 3,454 Accumulated depreciation ( 767 ) ( 479 ) Property and equipment, net $ 2,687 $ 2,975 Supplemental cash flow information related t o leases was as follows: Three Months Ended March 31, 2024 2023 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases $ 2,715 $ 2,468 Operating cash flows for finance leases $ 57 $ — Financing cash flows for finance leases $ 262 $ — March 31, 2024 December 31, 2023 Weighted-average remaining lease term Finance leases 2.33 2.58 Operating leases 6.31 6.49 March 31, 2024 December 31, 2023 Weighted-average discount rate Finance leases 7.91 % 7.91 % Operating leases 4.75 % 4.71 % As of March 31, 2024, maturities of lease liabilities were as follows: Operating leases Finance leases 2024 (remaining nine months) $ 7,580 $ 959 2025 8,819 1,278 2026 7,657 737 2027 8,119 — 2028 3,580 — Thereafter 15,108 — Total lease payments 50,863 2,974 Less: interest ( 7,483 ) ( 267 ) Total lease liabilities $ 43,380 $ 2,707 |