EAST WEST BANCORP INC

(1)For additional information regarding the reconciliation of these non-Generally Accepted Accounting Principles (“GAAP”) financial measures, refer to Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations (“MD&A”) — Reconciliation of GAAP to Non-GAAP Financial Measuresin this Form 10-Q.

(2)Efficiency ratio is calculated as noninterest expense divided by total revenue.

The Company’s net income for the third quarter and first nine months of 2026 of $382 million and $1.1 billion, respectively, increased $14 million or 4%, and $135 million or 14%, respectively, from the corresponding periods in 2025. Theyear-over-year increase in net income for the third quarter of 2026 was primarily attributable to higher net interest income before provision for credit losses, partially offset by higher income tax expense and provision for credit losses. The year-over-year increase in net income for the first nine months of 2026 was primarily driven by higher net interest income before provision for credit losses and noninterest income, and lower provision for credit losses, partially offset by increases in noninterest expense and income tax expense. Key aspects of the Company’s performance for the third quarter and first nine months of 2026 included:

•Net interest income and net interest margin. Third quarter 2026 net interest income before provision for credit losses was $719 million, an increase of $41 million or 6%from thethird quarter of 2025. Third quarter 2026 net interest margin was 3.49%, down 4 basis points (“bps”) from the prior-year quarter. For the first nine months of 2026, net interest income before the provision for credit losses totaled $2.1 billion, an increase of$180 million or 9%, from the corresponding period in 2025. Net interest margin increased by 6 bps to 3.47% for the first nine months of 2026 from 3.41% for the corresponding period in 2025.

•Earnings per share growth. Third quarter 2026 basic and diluted earnings per share (“EPS”) each increased 4%to $2.78 and $2.76, respectively, compared with the third quarter of 2025. For the first nine months of 2026, basic and diluted EPS each increased 14% to$8.02 and $7.97, respectively, compared with the first nine months of 2025.

•Profitability ratios. Third quarter 2026 ROA, ROACE and ROATCE of 1.79%,16.30% and 17.17%, respectively, decreased 5 bps, 114 bps and 131 bps, respectively, from the third quarter of 2025. For the first nine months of 2026, ROA, ROACE and ROATCE of 1.78%, 16.12% and 16.99%, respectively, increased 10 bps, 14 bps and 2 bps, respectively, from the same period in 2025. ROATCE is a non-GAAP financial measure. For additional information regarding the reconciliation of non-GAAP financial measures, refer to Item 2. MD&A — Reconciliation of GAAP to Non-GAAP Financial Measuresin this Form 10-Q.

•Operating efficiency. Third quarter 2026 efficiency ratio improved to 34.40%, from 35.59% for the third quarter of 2025. For the first nine months of 2026, the efficiency ratio improved to 35.77%, from 36.12% for the corresponding period in 2025.

•Asset growth. Total assets reached $86.0 billion as of September 30, 2026, an increase of $5.6 billion or 7% from December 31, 2025. The increase was primarily driven by a $2.8 billion or 5% increase in net loans held-for-investment, and a $2.0 billion or 15% increase in available-for-sale (“AFS”) debt securities.

•Deposit growth. Total deposits reached $71.5 billion as of September 30, 2026, an increase of $4.4 billion or 7%, from December 31, 2025, primarily reflecting growth in noninterest-bearing demand and money market deposits.

•Capital levels. Stockholders’ equity was $9.0 billion as of September 30, 2026, an increase of $141 million or 2%, from December 31, 2025. Book value per share increased $1.29 or 2% to $65.97, while tangible book value per share increased $1.28 or 2% to $62.55 as of September 30, 2026, compared with December 31, 2025. The TCE ratio was 10.02% as of September 30, 2026, compared to 10.54% as of December 31, 2025. Tangible book value per share and TCE ratio are non-GAAP financial measures. For additional information regarding the Company’s non-GAAP financial measures, refer to Item 2. MD&A — Reconciliation of GAAP to Non-GAAP Financial Measures in this Form 10-Q.