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LEASES | 3 Months Ended
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Mar. 31, 2026
LEASES |
LEASES | (17) LEASES The Company has operating leases for corporate offices and research and development facilities. Operating leases are reported separately in the Company’s condensed consolidated balance sheets. The Company determines if an arrangement is a lease at inception. A contract is determined to contain a lease component if the arrangement provides the Company with a right to control the use of an identified asset. Lease agreements may include lease and non-lease components. In such instances for all classes of underlying assets, the Company does not separate lease and non-lease components but rather, accounts for the entire arrangement under leasing guidance. Leases with an initial term of 12 months or less are not recorded on the balance sheet and lease expense for these leases is recognized on a straight-line basis over the lease term. Right-of-use assets and lease liabilities are initially measured based on the present value of the future minimum fixed lease payments (i.e., fixed payments in the lease contract) over the lease term at the commencement date. As the Company’s existing leases do not have a readily determinable implicit rate, the Company uses its incremental borrowing rate based on the information available at the commencement date in determining the present value of future minimum fixed lease payments. The Company calculates its incremental borrowing rate to reflect the interest rate that it would have to pay to borrow on a collateralized basis an amount equal to the lease payments in a similar economic environment over a similar term and considers its historical borrowing activities and market data from entities with comparable credit ratings in this determination. The measurement of the right-of-use asset also includes any lease payments made prior to the commencement date (excluding any lease incentives) and initial direct costs incurred. The Company assessed its right-of-use assets for impairment as of March 31, 2026 and December 31, 2025 and determined no impairment has occurred. Lease terms may include options to extend or terminate the lease and the Company incorporates such options in the lease term when it has the unilateral right to make such an election and it is reasonably certain that the Company will exercise that option. In making this determination, the Company considers its prior renewal and termination history and planned usage of the assets under lease, incorporating expected market conditions. For operating leases, lease expense for minimum fixed lease payments is recognized on a straight-line basis over the lease term. Lease contracts may contain variable lease costs, such as common area maintenance, utilities and tax reimbursements that vary over the term of the contract. Variable lease costs are not included in minimum fixed lease payments and as a result, are excluded from the measurement of the right-of-use assets and lease liabilities. The Company expenses all variable lease costs as incurred. Certain leased facilities are being partially or fully vacated as part of the 2022 Restructuring Plan and for some of those facilities, the Company has no plans to enter into sublease agreements. Accordingly, the Company may accelerate the amortization of those lease assets through the planned cease-use date of each facility, resulting in additional amortization expense. No such accelerated amortization was recorded in the three months ended March 31, 2026 or 2025. The Company did not record estimated future variable lease costs in the three months ended March 31, 2026 or 2025 related to the 2022 Restructuring Plan. All incremental accelerated amortization and accruals for estimated future variable costs are included in Restructuring and related expense in the Company’s condensed consolidated statements of operations. At March 31, 2026 and December 31, 2025, the Company had accruals of $0.7 million and $0.8 million, respectively, for all future anticipated variable lease costs related to these facilities. The Company may incur additional future expense if it is unable to sublease other locations included in the facilities initiative. The Company leases its corporate offices and other facilities under operating leases, which expire at various times through 2036. The Company’s right-of-use lease assets and lease liabilities at March 31, 2026 and December 31, 2025 were as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ ​ ​ | March 31, | ​ | December 31,
​ | ​ ​ ​ | Classification | ​ ​ ​ | 2026 | ​ ​ ​ | 2025
Assets: | ​ | ​ |  | ​ | ​ |  | ​ | ​
Operating lease assets | ​ | Operating lease right-of-use assets | ​ | $ | 44,010 | ​ | $ | 46,240
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Liabilities: | ​ | ​ | ​ |  | ​ | ​ |  | ​
Current Operating | ​ | Operating lease liabilities | ​ | $ | 11,601 | ​ | $ | 11,699
Non-Current Operating | ​ | Operating lease liabilities, net of current | ​ |  | 57,042 | ​ |  | 60,159
Total Operating lease liabilities | ​ | ​ | ​ | $ | 68,643 | ​ | $ | 71,858
​ The components of lease expense for the three months ended March 31, 2026 and 2025 were as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​
​ | Three months ended
​ | March 31, | ​ | March 31,
​ | 2026 | ​ ​ ​ | 2025
Operating lease cost* | $ | 3,690 | ​ | $ | 3,225
Short-term lease cost |  | 3,571 | ​ |  | 3,527
Variable lease costs (costs excluded from minimum fixed lease payments)** |  | 1,514 | ​ |  | 872
Sublease income |  | (66) | ​ |  | (120)
Net lease cost | $ | 8,709 | ​ | $ | 7,504
* | No accelerated amortization was recorded in the three months ended March 31, 2026 or 2025.
** | No variable lease costs were expensed in the three months ended March 31, 2026 or 2025 for future estimated variable expenses related to certain assets partially or fully vacated with no intent or ability to sublease.
Cash flows related to the Company’s leases included in the measurement of operating lease liabilities were classified as operating cash flows and totaled $4.4 million and $3.5 million in the three months ended March 31, 2026 and 2025, respectively. The Company’s non-cash investing and financing activities in the three months ended March 31, 2025 related to the addition of operating leases resulted in right-of-use assets (“ROUs”) obtained in exchange for lease obligations of $16.6 million and operating lease liabilities recorded of $27.3 million. There were no non‑cash investing or financing activities related to operating leases in the three months ended March 31, 2026. Other information related to the Company’s leases as of March 31, 2026 and December 31, 2025 was as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31, | ​
​ | ​ ​ ​ | 2026 | ​ ​ ​ | 2025 |
Weighted average remaining lease term (years): |  | ​ |  | ​ | ​
Operating leases |  | 6.82 |  | 6.91 | ​
Weighted average discount rate: |  | ​ | ​ | ​ | ​
Operating leases |  | 9.51 | % | 9.50 | %
​ Future minimum fixed lease payments under noncancelable leases at March 31, 2026 were as follows (in thousands):
​ | ​ | ​ | ​
​ | ​ ​ ​ | Operating
​ | ​ | leases
Remainder of 2026 | ​ | $ | 13,222
2027 | ​ | ​ | 16,561
2028 | ​ |  | 13,903
2029 | ​ |  | 11,547
2030 | ​ |  | 8,450
2031 and beyond | ​ |  | 31,716
Total lease payments | ​ |  | 95,399
Less: interest | ​ |  | (26,756)
Present value of lease liabilities | ​ | $ | 68,643
​

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- Definition The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/842-20/tableOfContent + Details
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