EAST WEST BANCORP INC

For the period ended Sep 30, 2026. Filed Nov 6, 2026.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Nov 6, 2026

EWBC$130.97+1.7%Stored close · as of Nov 9, 2026

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Contents

1 — Basis of Presentation and Current Accounting Developments

Note 1 — Basis of Presentation and Current Accounting Developments

East West Bancorp, Inc. (referred to herein on an unconsolidated basis as “East West” and on a consolidated basis as the “Company,” “we,” “our” or “EWBC”) is a registered bank holding company that offers a full range of banking services to individuals and businesses through its subsidiary bank, East West Bank and its subsidiaries (“East West Bank” or the “Bank”). The unaudited interim Consolidated Financial Statements in this Quarterly Report on Form 10-Q (this “Form 10-Q”) include the accounts of East West, East West Bank and East West’s subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

The unaudited interim Consolidated Financial Statements are presented in accordance with United States (“U.S.”) Generally Accepted Accounting Principles (“GAAP”), applicable guidelines prescribed by regulatory authorities and general practices in the banking industry. While the unaudited interim Consolidated Financial Statements reflect all adjustments that, in the opinion of management, are necessary for fair presentation, they primarily serve to update the Company’s Annual Report on Form 10-K for the year ended December 31, 2025, filed with the U.S. Securities and Exchange Commission on February 27, 2026 (the “Company’s 2025 Form 10-K”), and may not include all the information and notes necessary to constitute a complete set of financial statements. Accordingly, they should be read in conjunction with the audited Consolidated Financial Statements and notes thereto included in the Company’s 2025 Form 10-K.

The preparation of the Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the Consolidated Financial Statements, income and expenses during the reporting periods, and the related disclosures. Although our estimates consider current conditions and how we expect them to change in the future, it is reasonably possible that actual results may differ materially from those estimates. Accordingly, the current period’s results of operations are not necessarily indicative of results that may be expected for any future interim period or for the year as a whole. Certain items on the Consolidated Financial Statements and notes for the prior periods have been reclassified to conform to the current presentation. Events subsequent to the Consolidated Balance Sheet date have been evaluated through the date the Consolidated Financial Statements are issued for inclusion in the accompanying Consolidated Financial Statements.

Recent Accounting Pronouncements Yet to be Adopted

Standard	Required Date of Adoption	Description	Effect on Financial Statements
Accounting Standards Update (“ASU”) No. 2025-09, Derivatives and Hedging (Topic 815): Hedge Accounting Improvements	January 1, 2027Early adoption is permitted.	The key provisions of ASU 2025-09 that amend certain hedge accounting guidance in Accounting Standards Codification (“ASC”) 815, Derivatives and Hedging are as follows:1.Changes the requirement for designating a group of individual forecasted transactions from having a “shared” risk exposure to having a “similar” risk exposure.2.Enables entities to apply cash flow hedge accounting on “choose-your-rate” debt.3.Broadens situations where hedge accounting can be applied to forecasted purchases and sales of nonfinancial assets.4.Eliminates the requirement to perform a net written option assessment for a compound derivative when it is designated as a hedging instrument.5.In the case of a dual hedge where a foreign-currency-denominated debt instrument is designated as the hedging instrument in a net investment hedge and a hedged item in a fair value hedge of interest rate risk, the ASU requires the debt instrument’s fair value hedge basis adjustment be excluded when performing the net investment hedge effectiveness assessment.This guidance must be applied prospectively for all new hedging relationships and may be applied to existing hedging relationships if elected.	The Company does not expect adoption to have a material impact on the Company’s Consolidated Financial Statements.

Recent Accounting Pronouncements Yet to be Adopted (Continued)

Standard	Required Date of Adoption	Description	Effect on Financial Statements
ASU No. 2025-08, Financial Instruments — Credit Losses (Topic 326)	January 1, 2027Early adoption is permitted.	ASU 2025-08 expands the population of financial assets that are within the scope of the gross-up approach under ASC 326 to include purchased seasoned loans. Under the guidance, purchased seasoned loans include loans that are not credit deteriorated and are either:•acquired in a business combination,•acquired in an asset acquisition or upon consolidation of a variable interest entity that is not a business, or•purchased more than 90 days after their origination date by a transferee that was not involved in their origination.The guidance also introduces an accounting policy election to use the amortized cost basis of the asset rather than the discounted cash flow analysis to subsequently measure the credit losses on purchased seasoned loans. This accounting policy election is made on an individual acquisition basis and is irrevocable for each applicable acquisition once elected.The new guidance does not apply to credit card loans, receivables within the scope of ASC 606, or debt securities. The guidance must be applied prospectively.	The Company does not expect adoption to have a material impact on the Company’s Consolidated Financial Statements.
ASU No. 2024-03, Income Statement — Reporting Comprehensive Income — Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses	December 31, 2027Early adoption is permitted.	ASU 2024-03 requires public companies to disclose, in both interim and annual reporting periods, additional information about specified expense categories included within relevant expense captions presented on the face of the income statement. The required disclosures include:•The amounts of (a) purchases of inventory; (b) employee compensation; (c) depreciation; (d) intangible asset amortization; and (e) depreciation, depletion and amortization of capitalized costs related to oil- and gas-producing activities in each relevant expense caption.•A qualitative description of the amounts remaining in relevant expense captions that are not separately disaggregated quantitatively.	The Company does not expect adoption to have a material impact on the Company’s Consolidated Financial Statements.

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