STEPAN CO New Standards Disclosure

Recent Accounting Pronouncements

In December 2023, the FASB issued ASU No. 2023-09, Income taxes (Topic 740) Improvement to Income Tax Disclosures. This update requires that public entities on an annual basis disclose specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. In addition, the amendments in this update require the disclosure on an annual basis of the amount of income taxes paid (net of refund received) disaggregated by federal, state and foreign taxes and the amount of income taxes paid (net of refunds received) disaggregated by individual jurisdictions in which income taxes paid is equal or greater than five percent of total income taxes paid (net of refunds received). This update requires all entities to disclose income (or loss) from continuing operations before income tax expense (or benefit) disaggregated between domestic and foreign and income tax expense (or benefit) from continuing operations disaggregated by federal, state, and foreign. The amendments in this update are effective for annual periods beginning after December 15, 2024 and should be applied on a prospective basis. The Company adopted ASU No. 2023-09 prospectively for the period ending December 31, 2025. The adoption of ASU No. 2023-09 did not have any effect on the Company’s financial position, results of operations and cash flow but impacted the Company’s annual income tax disclosures. See Note 9, Income Taxes, of the notes to the Company’s consolidated financial statements (included in Item 8 of this Form 10-K) for more details.

In November 2024, the FASB issued ASU No. 2024-03, Income Statement - Reporting Comprehensive income - Expense Disaggregation Disclosures (Subtopic 220-40). This update requires that public entities on an interim and annual basis disclose, in the notes to financial statements, specified information about certain costs and expenses. ASU No. 2024-03 requires a footnote disclosure in tabular form of each expense caption on the face of the income statement that includes any of the following natural expenses: (1) purchases of inventory, (2) employee compensation, (3) depreciation, and (4) intangible asset amortization. The disclosure would also include a qualitative description of the amounts remaining in relevant expense captions that are not separately disaggregated quantitatively and disclosure of the total amount of selling expenses and, in annual reporting periods, an entity’s definition of selling expenses. This ASU does not change or remove existing expense disclosure requirements; however, it may affect where that information appears in the footnotes to the financial statements. In January 2025, the FASB issued ASU No. 2025-01, Income Statement - Reporting Comprehensive income - Expense Disaggregation Disclosures (Subtopic 220-40), Clarifying the effective date. The amendments in ASU No. 2024-03 are effective for annual periods beginning after December 15, 2026 and interim reporting periods beginning after December 15, 2027. The amendments in this update should be applied either prospectively to financial statements issued for reporting periods after the effective date or retrospectively to any or all prior periods presented in the financial statements. The implementation of ASU No. 2024-03 will not have an impact on the Company’s financial position, results of operations and cash flow but will impact the Company’s interim and annual disclosures related to the relevant subtopics in this update.

In July 2025, the FASB issued ASU No. 2025-05, Financial Instruments-Credit Losses (Topic 326) Measurement of Credit Losses for Accounts Receivable and Contract Assets. This update provides public companies with a practical expedient in calculating expected credit losses on current accounts receivable and/or current contract assets arising from transactions under Topic 606, Revenue from Contracts with Customers. The expedient assumes that the current conditions as of the balance sheet date don't change for the remaining life of the asset and also allows an entity to consider cash collection activity that occurs after the balance sheet date but before the financial statements are issued. When developing an estimate of expected credit losses for assets to which the practical expedient is applied, an entity shall continue to adjust historical loss information to reflect current conditions to the extent that historical loss information does not reflect current conditions. The entity need to adopt the practical expedient first to be eligible to use it. The amendments in this update are effective for annual periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods and should be applied on a prospective basis. The Company adopted the practical expedient and believes ASU 2025-05 does not have an impact on the Company's financial position, results of operations and cash flows.

In September 2025, the FASB issued ASU No. 2025-06, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40) An Amendment of the FASB Accounting Standards Codification Targeted Improvements to the Accounting for Internal-Use Software. This update removes all references to software development stages so the entities start capitalizing software costs when 1) management has authorized and committed to funding the software projects and 2) it is probable that the project will be completed and the software will be used to perform the functions intended. Under the current rule, entities are required to capitalize development costs incurred depending on the nature of the costs and the project stage during which they occur. The amendments in this update are effective for annual periods beginning after December 15, 2027, and interim periods within those annual reporting periods. Early adoption is permitted

as of the beginning of the annual reporting period. The Company is in the process of evaluating ASU 2025-06 to determine its impact, if any, on the Company’s financial position, results of operations and cash flows.