The Company's foreign operations are subject to tax rates that differ from the US federal statutory rate. The unfavorable differential primarily reflects Subpart F inclusions under IRC Section 951 on passive income from foreign subsidiaries and withholding taxes on intercompany distributions, which more than offset the benefit of lower statutory rates in Ireland and Singapore where the Company maintains manufacturing operations and intellectual property holding structures.

The effective tax rate reflects state and local income tax obligations across multiple jurisdictions where the Company maintains significant business operations. The Company files combined unitary returns in California and New York, which impose corporate income tax rates of 8.84% and 7.25%, respectively. State tax liabilities are apportioned using a three-factor formula weighted toward sales.

The Company recognized net nondeductible expenses that increased the effective tax rate primarily due to stock-based compensation for which the deduction under IRC Section 83 has not yet been realized, meals and entertainment expenses subject to the 50% limitation under IRC Section 274, and executive compensation exceeding the $1 million deductibility cap under IRC Section 162(m).

The Company recognized current tax expense under the Global Intangible Low-Taxed Income provisions of IRC Section 951A. The inclusion represents excess net tested income from controlled foreign corporations over the ten percent return on qualified business asset investment threshold.