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PREPAID EXPENSES AND OTHER CURRENT ASSETS
9 Months Ended
Sep. 30, 2025
Other Income and Expenses [Abstract]  
PREPAID EXPENSES AND OTHER CURRENT ASSETS PREPAID EXPENSES AND OTHER CURRENT ASSETS
Prepaid expenses and other current assets consist of the following (in thousands):
As of
September 30,
2025
As of
December 31,
2024
Restricted cash$4,561 $149 
Prepaid expenses6,488 6,408 
U.S. Grants receivable— 9,897 
Supplies and materials2,790 3,659 
Assets held for sale— 852 
Other3,357 2,826 
Prepaid expenses and other current assets$17,196 $23,791