11. Income Taxes

The Company’s loss before income taxes for the years ended December 31, 2025 and 2024 were generated in the following jurisdictions (in thousands):

 

Year Ended
December 31,

 

 

2025

 

 

2024

 

Domestic

 

$

(89,606

)

 

$

(87,466

)

Foreign

 

 

 

 

 

(3,132

)

Worldwide

 

$

(89,606

)

 

$

(90,598

)

 

The components of net deferred income taxes consisted of the following as of December 31, 2025 and 2024 (in thousands):

 

 

December 31,

 

 

2025

 

 

2024

 

Deferred tax assets:

 

 

 

 

 

 

Net operating loss carryforwards

 

$

49,762

 

 

$

17,039

 

General business credits

 

 

11,134

 

 

 

7,769

 

Accrued expenses

 

 

1,138

 

 

 

864

 

Capitalized Section 174 R&D Costs

 

 

30,687

 

 

 

41,821

 

Stock compensation

 

 

6,181

 

 

 

4,511

 

Right-of-use liability

 

 

4,629

 

 

 

5,086

 

Intangible asset amortization

 

 

6,269

 

 

 

6,847

 

Other, net

 

 

(1

)

 

 

4

 

Deferred tax assets

 

 

109,799

 

 

 

83,941

 

Deferred tax liabilities

 

 

 

 

 

 

Right-of-use-Asset

 

 

(5,206

)

 

 

(5,842

)

Fixed Assets

 

 

(979

)

 

 

(1,316

)

Deferred tax liabilities

 

 

(6,185

)

 

 

(7,158

)

Net deferred tax assets

 

 

103,614

 

 

 

76,783

 

Valuation allowance

 

 

(103,614

)

 

 

(76,783

)

Net deferred tax assets

 

$

 

 

$

 

 

The components of income tax expense were as follows for the years ended December 31, 2025 and 2024 (in thousands):

 

 

Year Ended
December 31,

 

 

2025

 

 

2024

 

Current expense:

 

 

 

 

 

 

   U.S. Federal

 

$

 

 

$

 

   State

 

 

49

 

 

 

84

 

   Foreign

 

 

 

 

 

(701

)

Total current expense

 

 

49

 

 

 

(617

)

Deferred expense:

 

 

 

 

 

 

   U.S. Federal

 

 

 

 

 

 

   State

 

 

 

 

 

 

   Foreign

 

 

 

 

 

 

Total deferred expense

 

 

 

 

 

 

Provision for income taxes

 

$

49

 

 

$

(617

)

A reconciliation of income tax expense to the amount computed by applying the 21% statutory federal income tax rate to the loss from operations is summarized for the year ended December 31, 2025 after the adoption of ASU 2023-09 is as follows:

 

Description

Year Ended
December 31, 2025

 

Amount

 

 

Percent

 

U.S. Federal Statutory Tax Rate

$

(18,816

)

 

 

21.0

%

State and Local Income Tax, Net of Federal (National) Income Tax Effect

 

39

 

 

 

(0.0

)%

Foreign Tax Effects

 

 

 

 

 

Statutory tax rate difference between local country and United States

 

 

 

 

0.0

%

Effect of Changes in Tax Laws or Rates Enacted in the Current Period

 

 

 

 

0.0

%

Effect of Cross-Border Tax Laws

 

 

 

 

0.0

%

Tax Credits

 

 

 

 

0.0

%

R&D

 

(1,533

)

 

 

1.7

%

Orphan drug credit

 

(1,435

)

 

 

1.6

%

Changes in valuation allowances

 

20,925

 

 

 

(23.4

)%

Nontaxable or Nondeductible Items

 

 

 

 

0.0

%

Permanent Adjustments

 

706

 

 

 

(0.8

)%

Changes in Unrecognized Tax Benefits

 

 

 

 

0.0

%

Other Adjustments

 

 

 

 

0.0

%

Other

 

163

 

 

 

(0.2

)%

Income tax expense (benefit)

$

49

 

 

 

(0.1

)%

 

A reconciliation of the provision for income taxes to the amount computed by applying the 21% statutory federal income tax rate to the loss from operations is summarized for the tax year ended December 31, 2024 prior to the adoption of ASU 2023-09 is as follows:

 

 

Year Ended
December 31,

 

 

2024

 

Tax at statutory rate

 

 

21.0

%

State tax (net of federal benefit)

 

 

(0.1

)%

Permanent differences

 

 

(0.8

)%

Research and development credit

 

 

3.4

%

GILTI Inclusion

 

 

0.0

%

U.K. R&D credit

 

 

0.0

%

Foreign rate differential

 

 

1.0

%

Change in valuation allowance

 

 

(23.6

)%

Other

 

 

(0.2

)%

Income tax expense (benefit)

 

 

0.7

%

 

Disclosed below is a summary of income taxes paid by jurisdiction pursuant to the disclosure requirements of ASU 2023-09 for the year ended December 31,2025:

 

 

Year Ended
December 31,

 

 

2025

 

United States - Federal

 

$

 

United States - State and local

 

 

82

 

Foreign

 

 

 

Income tax expense (benefit)

 

$

82

 

 

The Company's income tax expense was $48,865 for the year ended December 31, 2025 and a benefit of $0.7 million for the year ended December 31, 2024. The net income tax expense for the year ended December 31, 2025 was primarily attributable to the state income taxes on interest income generated from the Company’s cash equivalents and marketable securities. On January 1, 2022, or the Transfer Date, the Company’s wholly owned subsidiary, PepGen Limited, transferred all IP assets to the parent company, PepGen, in an arm’s length transaction at fair value pursuant to an asset transfer agreement. The Company recognized a tax expense in 2022 of $3.7 million, inclusive of a $0.7 million unrecognized tax benefit. The income tax benefit for the year ended December 31, 2024 was due to the derecognition of the unrecognized tax benefit of $0.7 million upon the dissolution of our U.K.-based entity, PepGen Limited on December 10, 2024.

 

As of December 31, 2025, the Company has federal net operating losses ("NOLs") of $177.3 million and federal tax credits of $13 million, before consideration of limitations under IRC Section 382 of the Internal Revenue Code of 1986, as amended, or Section 383, as further described below. The federal NOLs do not expire, but generally limit the NOLs deduction to the lesser of the NOL carryover or 80% of a corporation's taxable income. The tax credits will begin to expire in 2042.

 

As of December 31, 2025, The Company has state net operating losses ("NOLs") of $199.6 million and state research and development credits of $2.5 million. The state NOLs will begin to expire in 2041, and the tax credits will begin to expire in 2037.

 

Net operating loss and tax credit carryforwards may become subject to an annual limitation in the event of certain cumulative changes in the ownership interest of significant stockholders over a three-year period in excess of 50%, as defined under Sections 382 and 383 of the IRC, respectively, as well as similar state provisions. This could limit the amount of tax attributes that can be utilized annually to offset future taxable income or tax liabilities. The amount of the annual limitation is determined based on the value of the Company immediately prior to the ownership change. Subsequent ownership changes may further affect the limitation in future years. An assessment of such ownership changes under Section 382 was not completed through December 31, 2025. To the extent that an assessment is completed in the future, the Company’s ability to utilize tax attributes could be restricted on a year-by-year basis and certain attributes could expire before they are utilized. The Company will examine the impact of any potential ownership changes in the future. A full valuation allowance has been provided against the deferred tax assets related to the Company's net operating loss and tax credits carryforwards and, if an adjustment is required, this adjustment would be offset by an adjustment to the valuation allowance.

 

The Company files tax returns as prescribed by the tax laws of the jurisdictions in which it operates. In a normal course of business, the Company is subject to examination by U.S. federal and state as well as foreign jurisdictions, where applicable. The Company’s tax years are still open since inception. To the extent that the Company has tax attribute carryforwards, the tax year in which the attributes were generated may still be adjusted upon examination by the U.S. Internal Revenue Services or state tax authorities to the extent utilized in a future period. The Company is not currently under examination by any tax authorities.

 

The following table summarizes the reconciliation of the beginning and ending amount of total unrecognized tax benefits recorded in the statement of operations in the prior year:

 

 

December 31,

 

 

2024

 

Balance at beginning of the period

 

$

713

 

Increase related to current year tax positions

 

 

 

Increase related to prior year tax positions

 

 

 

Decrease related to prior year tax positions

 

 

(701

)

Currency translation

 

 

(12

)

Balance at the end of the period

 

$

 

 

The Company's policy is to recognize interest and/or penalties related to income tax matters in income tax expense. The Company released approximately $0.7 million in unrecognized tax benefits due to the liquidation of its U.K. subsidiary, PepGen Limited in 2024. As of December 31, 2025, the Company had no unrecognized tax benefits or accrued interest or penalties.

Historical Timeline

Fiscal YearFiled
2025Mar 4, 2026Showing above
2024Feb 24, 2025
2023Mar 6, 2024
2022Mar 23, 2023

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.