Income Taxes
The components of income (loss) before provision for income taxes were as follows (in thousands):
Years Ended December 31,
202520242023
Domestic$172,638 $(62,515)$(206,674)
Foreign94,753 (24,439)(19,555)
Income (loss) before provision for income taxes$267,391 $(86,954)$(226,229)
The components of the expense (benefit) for income taxes were as follows (in thousands):
Years Ended December 31,
202520242023
Current expense (benefit) provision:
U.S. Federal$— $— $— 
State3,502 1,118 (45)
Foreign1,240 1,163 1,037 
Total current expense provision4,742 2,281 992 
Deferred expense (benefit) provision:
U.S. Federal— — — 
State(184)79 (120)
Foreign(1,028)(433)(562)
Total deferred expense provision(1,212)(354)(682)
Total expense provision$3,530 $1,927 $310 
Income taxes paid, net of refunds received, were as follows (in thousands):
Years Ended December 31,
202520242023
Federal$— $— $— 
State
California901 (239)— 
     Other38 623 1,176 
Foreign
     Germany329 105 114 
     United Kingdom855 646 81 
     Other680 468 63 
Total income taxes paid, net of refunds received$2,803 $1,603 $1,434 
The differences between the Company’s effective tax rate and the statutory tax rate in 2025, 2024, and 2023 were as follows (in thousands):
Years Ended December 31,
202520242023
AmountPercentAmountPercentAmountPercent
Income tax expense (benefit) at federal statutory rate $56,152 21 %$(18,260)21 %$(47,508)21 %
State and local income taxes, net of federal income tax effect (a)
2,569 %955 (1)%(351)— %
Foreign tax effects 
Ireland
Statutory tax rate difference between Ireland and the United States(8,262)(3)%2,457 (3)%1,648 (1)%
Sale of European ORLADEYO business(12,960)(5)%— — %— — %
Changes in valuation allowances1,711 %3,603 (4)%2,423 (1)%
Other(880)— %30 — %46 — %
Other foreign jurisdictions704 — %(228)— %464 — %
Tax credits
Research and development tax credits(1,323)— %(1,764)%(3,725)%
Expiration of research and development tax credits3,574 %2,514 (3)%831 — %
Changes in valuation allowances(52,454)(20)%8,695 (10)%42,139 (19)%
Nontaxable or nondeductible items
Share-based payment awards4,837 %2,780 (3)%2,625 (1)%
Sale of European ORLADEYO business3,867 %— — %— — %
Other1,285 — %899 (1)%388 — %
Changes in unrecognized tax benefits(217)— %353 — %825 — %
Other adjustments4,927 %(107)— %505 — %
Income tax expense at effective income tax rate$3,530 %$1,927 (2)%$310 — %
(a) For the year ended December 31, 2025, state taxes in California, Michigan, Minnesota, Kentucky, and New Jersey made up the majority (greater than 50 percent) of the tax effect in this category. For the year ended December 31, 2024, state taxes in Colorado, Illinois, Maine, Massachusetts, New Jersey, and Texas made up the majority of the tax effect in this category. For the year ended December 31, 2023, state taxes in Colorado, Illinois, Michigan, New Jersey, and Texas made up the majority of the tax effect in this category.
The Company recognizes the impact of a tax position in its financial statements if it is more likely than not that the position will be sustained on audit based on the technical merits of the position. The Company has concluded that it has an uncertain tax position pertaining to its research and development and orphan drug credit carryforwards. The Company has established these credits based on information and calculations it believes are appropriate and the best estimate of the underlying credit. Any changes to the Company’s unrecognized tax benefits are offset by an adjustment to the valuation allowance and there would be no impact on the Company’s financial statements. The Company does not expect its unrecognized tax benefits to change significantly over the next 12 months. If recognized, none of these tax benefits would affect the effective tax rate due to the valuation allowance.
A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):
20252024
Balance at January 1,$14,715 $14,362 
Additions to current period tax positions386 353 
Reductions to prior period tax positions(603)— 
Balance at December 31,$14,498 $14,715 
The Company’s ability to utilize the net operating loss and tax credit carryforwards in the future may be subject to substantial restrictions in the event of past or future ownership changes as defined in Section 382 of the IRC and similar state tax law.
Significant components of the Company’s deferred tax assets and liabilities are as follows (in thousands):
December 31,
20252024
Deferred tax assets:
Net federal and state operating losses$82,049 $105,865 
Research and development credits85,254 87,287 
Royalty income106,695 117,570 
Stock-based compensation40,070 34,486 
Capitalized R&D40,875 82,476 
Leasing obligations2,666 2,806 
Other26,744 22,693 
Total deferred tax assets384,353 453,183 
Deferred tax liabilities:
Fixed assets(1,245)(797)
Right of use asset(2,337)(2,620)
Total deferred tax liabilities(3,582)(3,417)
Valuation allowance(380,519)(448,740)
Net deferred tax assets$252 $1,026 
The majority of the Company’s deferred tax assets relate to net operating loss and research and development carryforwards that can only be realized if the Company is profitable in future periods. It is uncertain whether the Company will realize any tax benefit related to these carryforwards. Accordingly, the Company has provided a valuation allowance against substantially all the net deferred tax assets due to uncertainties as to their ultimate realization. The valuation allowance will remain at the full amount of the deferred tax assets until it is more likely than not that the related tax benefits will be realized. The Company’s valuation allowance decreased by $68,221 in 2025, and increased by $11,642, and $47,490 in 2024 and 2023, respectively.
As of December 31, 2025, the Company had U.S. federal operating loss carryforwards of $351,348, state operating loss carryforwards of $154,550, and U.S. research and development and orphan drug credit carryforwards of $99,751, which will expire at various dates from 2026 through 2045. Federal losses, state losses, and research and development credit carryforwards began expiring in 2021. As of December 31, 2025 the Company had no foreign net operating loss carryforwards.
Tax years 2022-2025 remain open to examination by the major taxing jurisdictions to which the Company is subject. Additionally, years prior to 2022 are also open to examination for loss and credit carryforwards from those years. The Company recognizes interest and penalties accrued related to unrecognized tax benefits as components of its income tax provision. However, there were no provisions or accruals for interest and penalties in 2025, 2024, and 2023.
As of December 31, 2025, the Company has minimal accumulated undistributed earnings generated by its foreign subsidiaries which have already been subject to local and U.S. tax as part of the global intangible low-taxed income provisions. The Company intends to indefinitely reinvest these earnings, as well as future earnings from its foreign subsidiaries, to fund its international operations. In addition, the Company expects future U.S. cash generation will be sufficient to meet future U.S. cash needs.

Historical Timeline

Fiscal YearFiled
2025Feb 26, 2026Showing above
2024Feb 25, 2025
2023Feb 27, 2024
2022Feb 27, 2023
2021Feb 28, 2022
2020Mar 1, 2021
2019Mar 13, 2020
2018Mar 14, 2019
2017Mar 12, 2018
2016Feb 27, 2017
2015Feb 26, 2016

About Income Taxes Disclosures

The income tax disclosure reveals how much a company actually pays in taxes versus what the statutory rate would predict. Analysts focus on the effective tax rate (ETR) reconciliation, which breaks down every item driving the gap between the 21% federal rate and the company's reported ETR — including R&D credits, foreign rate differentials, and state taxes. Deferred tax assets (DTAs) and their valuation allowances signal management's confidence in future profitability: a rising allowance suggests the company doubts it can use accumulated tax benefits. Uncertain tax benefit (UTB) reserves quantify exposure to IRS challenges on aggressive positions.

Key signals to watch: sudden ETR drops without clear operational reasons, large increases in valuation allowances, growing UTB balances, and significant unremitted foreign earnings. Post-TCJA, pay attention to GILTI and BEAT provisions that affect multinational tax structures. Compare the cash taxes paid (from the cash flow statement) against the income tax provision to gauge earnings quality.