Leases
The Company has operating leases for office and manufacturing facilities in the U.S., Switzerland, and China. The leases have remaining lease terms of up to five years, some of which include options to extend the leases that have not been included in the calculation of the Company’s lease liabilities and ROU assets. The Company has land use rights, which represent land acquired for the biologics manufacturing facility in Guangzhou, the land acquired for the Company’s research, development and office facility in Changping, Beijing, the land acquired for the Company’s research, development and manufacturing facility in Suzhou, and the land acquired for the Company’s research and development facility in Shanghai. The Company also has certain leases with terms of 12 months or less for certain equipment, office and lab space, which are expensed and not recorded on the balance sheet.
The components of lease expense were as follows:
 Year Ended December 31,
 202520242023
 $$$
Operating lease cost 24,899 26,575 25,978 
Variable lease cost4,282 4,580 6,101 
Short-term lease cost1,804 2,897 1,683 
Total lease cost 30,985 34,052 33,762 
Supplemental balance sheet information related to leases was as follows:
 As of December 31,
 20252024
 $$
Operating lease right-of-use assets69,306 60,639 
Land use rights, net78,878 78,670 
Total operating lease right-of-use assets148,184 139,309 
Current portion of operating lease liabilities20,698 17,576 
Operating lease liabilities, non-current portion52,940 44,277 
Total lease liabilities73,638 61,853 
Maturities of operating lease liabilities are as follows:
Amounts
 $
Year ending December 31, 202623,653 
Year ending December 31, 202721,761 
Year ending December 31, 202816,453 
Year ending December 31, 202911,173 
Year ending December 31, 20306,641 
Thereafter888 
Total lease payments80,569 
Less imputed interest(6,931)
Present value of lease liabilities73,638 
Other supplemental information related to leases is summarized below:
 Year ended December 31,
 202520242023
 $$$
Operating cash flows used in operating leases24,000 56,005 27,985 
ROU assets obtained in exchange for new operating lease liabilities29,826 47,066 11,854 
 As of December 31,
 20252024
Weighted-average remaining lease term (years)44
Weighted-average discount rate5.02 %5.23 %

Historical Timeline

Fiscal YearFiled
2025Feb 26, 2026Showing above
2024Feb 27, 2025
2023Feb 26, 2024
2022Feb 27, 2023
2021Feb 28, 2022
2020Feb 25, 2021
2019Mar 2, 2020

About Leases Disclosures

Lease disclosures under ASC 842 provide a comprehensive view of a company's leased asset portfolio, including the split between operating and finance leases, discount rates used to present-value future payments, and the maturity schedule of lease obligations. This section reveals a significant source of off-balance-sheet commitments that were largely hidden before the current standard.

Key signals: the weighted-average discount rate affects the size of recorded lease liabilities — a higher rate reduces the reported obligation, so compare the chosen rate against the company's incremental borrowing rate. The operating versus finance lease mix affects both EBITDA and operating income presentation. Watch the maturity table for concentration risk: large payment cliffs in specific years may create cash flow pressure. Variable lease payments excluded from the liability measurement represent real obligations that do not appear on the balance sheet. Compare total lease costs against prior-year operating lease expense to assess the true economic burden.