18. Income Taxes

The Company is subject to taxation in the United States and various foreign tax jurisdictions. Loss before income taxes was as follows (in thousands):

 

 

 

Year Ended December 31,

 

 

 

2025

 

 

2024

 

U.S. operations (domestic)

 

$

34,633

 

 

$

7,941

 

Non-U.S. operations (foreign)

 

 

11,066

 

 

 

28,614

 

Loss before provision for income taxes

 

$

45,699

 

 

$

36,555

 

 

The significant components of income tax benefits/provision are as follows:

 

 

 

Year Ended December 31,

 

 

 

2025

 

 

2024

 

Current expense:

 

 

 

 

 

 

Federal

 

$

(383

)

 

$

 

State

 

 

33

 

 

 

13

 

Foreign

 

 

 

 

 

 

Total current expense:

 

$

(350

)

 

 

13

 

Deferred expense:

 

 

 

 

 

 

Federal

 

 

 

 

 

 

State

 

 

 

 

 

 

Foreign

 

 

 

 

 

 

Total deferred expense:

 

 

 

 

 

 

Total income tax provision:

 

$

(350

)

 

$

13

 

 

The Company adopted ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures on a prospective basis. As a result, the rate reconciliation for the year ended December 31, 2025 is presented in accordance with the new disclosure requirements, while the reconciliation for the year ended December 31, 2024 continue to be presented under disclosure requirements in effect for that period.

 

A reconciliation of the income tax benefits and provision for income taxes to the amount computed by applying the statutory federal income tax rate to the net loss is summarized as follows (in thousands):

 

 

 

 

Year ended December 31, 2025

 

U.S. Federal statutory tax rate

 

$

(9,597

)

 

 

21.0

%

State and local income tax, net of federal income tax effect (1)

 

 

37

 

 

 

(0.1

)%

Foreign tax effects:

 

 

 

 

 

 

China

 

 

 

 

 

 

   Foreign Rate Differential

 

 

710

 

 

 

(1.6

)%

   Change in Valuation Allowance

 

 

(25,302

)

 

 

55.4

%

   Effects of entity disposition

 

 

25,298

 

 

 

(55.4

)%

Cayman

 

 

 

 

 

 

   Foreign Rate Differential

 

 

1,551

 

 

 

(3.4

)%

Other foreign jurisdictions

 

 

67

 

 

 

(0.1

)%

Tax credits

 

 

 

 

 

 

  R&D Tax Credit

 

 

(564

)

 

 

1.2

%

Change in valuation allowance

 

 

2,000

 

 

 

(4.4

)%

Nontaxable or nondeductible items

 

 

 

 

 

 

  Stock Compensation

 

 

2,618

 

 

 

(5.7

)%

  IP Distribution

 

 

2,555

 

 

 

(5.6

)%

  Other

 

 

3

 

 

 

0.0

%

Changes in unrecognized tax benefits

 

 

(212

)

 

 

0.5

%

Other

 

 

486

 

 

 

(1.1

)%

 

 

$

(350

)

 

 

0.7

%

(1) State taxes in California for 2025 made up the majority (greater than 50%) of the tax effect in this category.

 

 

 

Year ended December 31, 2024

 

Domestic statutory rate

 

 

 

 

21

%

Foreign rate differential

 

 

 

 

(9

)%

Nondeductible expenses

 

 

 

 

(1

)%

Tax credits

 

 

 

 

1

%

Change in valuation allowance

 

 

 

 

(12

)%

Total

 

 

 

 

%

 

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes and operating losses and tax credit carryforwards. The Company has established a valuation allowance against net deferred tax assets due to the uncertainty that such assets will be realized. The Company periodically evaluates the recoverability of the deferred tax assets. At such time as it is determined that it is more likely than not that the deferred tax asset will be realized, the valuation allowance will be reduced.

 

 

 

 

Year Ended December 31,

 

 

 

2025

 

 

2024

 

Deferred tax assets:

 

 

 

 

 

 

Net operating losses

 

$

60,906

 

 

$

26,214

 

Intellectual property sale

 

 

 

 

 

3,405

 

Capitalized R&D

 

 

27,389

 

 

 

4,185

 

Stock compensation

 

 

934

 

 

 

 

Other

 

 

2,547

 

 

 

908

 

Total deferred tax assets

 

 

91,776

 

 

 

34,712

 

Less: valuation allowance

 

 

(91,556

)

 

 

(34,573

)

Total net deferred tax assets

 

 

220

 

 

 

139

 

Deferred tax liabilities:

 

 

 

 

 

 

Operating lease right-of-use assets

 

 

(221

)

 

 

(139

)

Other

 

 

1

 

 

 

 

Total deferred tax liabilities

 

 

(220

)

 

 

(139

)

Total net deferred taxes

 

$

 

 

$

 

 

The valuation allowance increased by $57.0 million and by $10.0 million for the years ended December 31, 2025 and 2024, respectively, primarily due to the net operating losses carryforwards, research and development credits and capitalized research expenditures.

The following table summarizes the Company’s net operating losses and tax credit carryforwards by jurisdiction (in thousands):

 

 

 

Amount at
December 31,
2025

 

 

Year
expiration
begins

Net operating losses:

 

 

 

 

 

U.S. federal

 

$

267,027

 

 

Indefinite

U.S. state

 

$

81,521

 

 

2037

Tax credits:

 

 

 

 

 

U.S. federal

 

$

1,140

 

 

2043

U.S. state

 

$

402

 

 

Indefinite

 

The NOL carryforwards and the research tax credit carryforwards are subject to an annual limitation under Section 382 and 383 of the Internal Revenue Code of 1986, and similar state provisions due to ownership change limitations that have occurred which will limit the amount of NOL and tax credit carryforwards that can be utilized to offset future taxable income and tax, respectively. In general, an ownership change, as defined by Section 382 and 383, results from

transactions increasing ownership of certain stockholders or public groups in the stock of the corporation by more than 50 percentage points over a three-year period. The Company has not completed an IRC Section 382/383 analysis regarding the limitation of net operating loss and research and development credit carryforwards. If a change in ownership were to have occurred, NOL and tax credit carryforwards could be eliminated or restricted. If eliminated, the related asset would be removed from the deferred tax asset schedule with a corresponding reduction in the valuation allowance. Due to the existence of the full valuation allowance, limitations created by future ownership changes, if any, related to the Company’s operations in the United States will not impact the Company’s effective tax rate.

The Company recognizes a tax benefit from an uncertain tax position when it is more likely than not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, based on the technical merits, and uncertain income tax positions must meet a more likely than not recognition threshold to be recognized. The Company recognizes interest and penalties related to unrecognized tax benefits within the income tax expense line in the consolidated statement of operations and comprehensive loss. As of December 31, 2025, and December 31, 2024, the Company accrued no material interest and penalties.

The following table summarizes the changes to the Company’s gross unrecognized tax benefits (in thousands):

 

Unrecognized tax benefit

 

Amount

 

Balance at December 31, 2023

 

$

238

 

Additions based on tax positions related to the
   current year

 

 

75

 

Additions based on tax positions of prior years

 

 

 

Reductions for tax positions of prior years

 

 

 

Settlements

 

 

 

Balance at December 31, 2024

 

$

313

 

Additions based on tax positions related to the
   current year

 

 

48

 

Additions based on tax positions of prior years

 

 

715

 

Reductions for tax positions of prior years

 

 

(13

)

Reductions for lapse in statute of limitations

 

 

(162

)

Balance at December 31, 2025

 

$

901

 

 

The Company is subject to income tax examination by tax authorities since inception. As of December 31, 2025, the Company is not currently under examination by any federal, state, or foreign taxing authorities.

 

On July 4, 2025, the One Big Beautiful Bill Act (“OBBBA”) was enacted in the U.S. The OBBBA includes significant provisions, such as the permanent extension of certain expiring provisions of the Tax Cuts and Jobs Act, modifications to the international tax framework and the restoration of favorable tax treatment for certain business provisions, most notably Section 174 capitalization of domestic research and development costs. The legislation has multiple effective dates, with certain provisions effective in 2025 and others implemented through 2027. There was not a significant impact on the Company's tax expense or effective tax rate for year ended December 31, 2025 associated with the OBBBA.

Historical Timeline

Fiscal YearFiled
2025Mar 10, 2026Showing above
2024Mar 6, 2025
2023Mar 12, 2024
2022Mar 14, 2023
2021Mar 17, 2022

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.