v3.26.3
LIABILITIES RELATED TO THE SALE OF FUTURE ROYALTIES AND DEVELOPMENT FUNDING (Tables)
9 Months Ended
Sep. 30, 2026
Related Party Transactions [Abstract]  
Schedule of Fair Value, Liabilities
The following table shows the activity with respect to the vutrisiran development funding liability, in thousands:
Carrying value as of December 31, 2025
$194,153 
Interest expense
69,133 
Amount paid
(92,908)
Carrying value as of September 30, 2026
$170,378 
The following table shows the activity with respect to the zilebesiran development funding liability, in thousands:
Carrying value as of December 31, 2025
$17,047 
Interest expense
5,979 
Amount paid
(15,844)
Amount received
18,000 
Carrying value as of September 30, 2026
$25,182 
Schedule of Royalty Liability
The following table shows the activity with respect to the liability, in thousands:
Carrying value as of December 31, 2025
$1,479,209 
Interest expense
151,534 
Payments(91,438)
Carrying value as of September 30, 2026
$1,539,305