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v3.24.1.u1

Intangible assets and goodwill - Definite-lived Intangibles (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Definite-lived intangible assets |  |  |
Milestone Payable | $ 2,500 | $ 32,500 |
Accrued royalties | 28,952 |  | $ 74,111
Definite-lived intangibles |  |  |
Amortization | (51,530) | (39,415) |
Finite-Lived Intangible Assets, Net | $ 94,274 |  |
Weighted Average |  |  |
Definite-lived intangible assets |  |  |
Remaining amortization period | 9 years 4 months 24 days |  |
Akcea | Waylivra |  |  |
Definite-lived intangible assets |  |  |
Royalty payments | $ 1,700 |  |
Akcea | Waylivra | Accounts payable and accrued expenses |  |  |
Definite-lived intangible assets |  |  |
Accrued royalties | 1,600 |  |
Akcea | Tegsedi |  |  |
Definite-lived intangible assets |  |  |
Royalty payments | 800 |  |
Akcea | Tegsedi | Accounts payable and accrued expenses |  |  |
Definite-lived intangible assets |  |  |
Accrued royalties | 800 |  |
Definite-lived intangible assets |  |  |
Definite-lived intangibles |  |  |
Beginning balance - Definite-lived assets, Gross | 640,507 |  |
Additions | 2,450 |  |
Foreign Currency Translation | (566) |  |
Ending balance - Definite-lived assets, Gross | 642,391 |  |
Beginning balance - Accumulated amortization | (496,776) |  |
Amortization | (51,530) | $ (39,400) |
Foreign Currency Translation - Accumulated amortization | 189 |  |
Ending balance - Accumulated amortization | (548,117) |  |
Finite-Lived Intangible Assets, Net | 94,274 |  |
Definite-lived intangible assets | Emflaza |  |  |
Definite-lived intangibles |  |  |
Beginning balance - Definite-lived assets, Gross | 527,417 |  |
Ending balance - Definite-lived assets, Gross | 527,417 |  |
Beginning balance - Accumulated amortization | (478,618) |  |
Amortization | (48,799) |  |
Ending balance - Accumulated amortization | (527,417) |  |
Definite-lived intangible assets | Waylivra |  |  |
Definite-lived intangibles |  |  |
Beginning balance - Definite-lived assets, Gross | 10,218 |  |
Additions | 1,658 |  |
Foreign Currency Translation | (246) |  |
Ending balance - Definite-lived assets, Gross | 11,630 |  |
Beginning balance - Accumulated amortization | (3,965) |  |
Amortization | (366) |  |
Foreign Currency Translation - Accumulated amortization | 106 |  |
Ending balance - Accumulated amortization | (4,225) |  |
Definite-lived intangible assets | Tegsedi |  |  |
Definite-lived intangibles |  |  |
Beginning balance - Definite-lived assets, Gross | 13,322 |  |
Additions | 792 |  |
Foreign Currency Translation | (320) |  |
Ending balance - Definite-lived assets, Gross | 13,794 |  |
Beginning balance - Accumulated amortization | (3,311) |  |
Amortization | (499) |  |
Foreign Currency Translation - Accumulated amortization | 83 |  |
Ending balance - Accumulated amortization | (3,727) |  |
Definite-lived intangible assets | Upstaza |  |  |
Definite-lived intangibles |  |  |
Beginning balance - Definite-lived assets, Gross | 89,550 |  |
Ending balance - Definite-lived assets, Gross | 89,550 |  |
Beginning balance - Accumulated amortization | (10,882) |  |
Amortization | (1,866) |  |
Ending balance - Accumulated amortization | $ (12,748) |  |

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