EAST WEST BANCORP INC

(1)For additional information regarding the reconciliation of these non-U.S. 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 first quarter 2026 was $358 million, a $68 million or 23% increase from the same prior year period. The year-over-year increase was primarily driven by higher net interest income before provision for credit losses, lower provision for credit losses, and increased noninterest income, partially offset by higher noninterest expense. Noteworthy aspects of the Company’s performance for the first quarter of 2026 included:

•Net interest income and net interest margin. First quarter 2026 net interest income before provision for credit losses of $671 million increased $71 million or 12%from thefirst quarter of 2025. First quarter 2026 net interest margin of 3.49% increased 14 bps year-over-year.

•Earnings per share growth. First quarter 2026 basic and diluted earnings per share both increased 23% to $2.59 and $2.57, respectively, from the first quarter of 2025.

•Profitability ratios. First quarter 2026 ROA, ROAE and the ROATCE of 1.79%, 16.04% and 16.92%, respectively, increased 23 bps, 108 bps and 100 bps year-over-year, respectively. 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.

•Efficiency ratios. First quarter 2026 efficiency ratio was 36.23%, compared with 36.42% for the same period in 2025. The improvement in the efficiency ratio was primarily due to higher net interest income before provision for credit losses and an increase in noninterest income.

•Asset growth. Total assets reached $82.9 billion as of March 31, 2026, an increase of $2.5 billion from December 31, 2025, primarily driven by a $1.2 billion or 2% increase in net loans held-for-investment and an $881 million or 7% increase in available-for-sale (“AFS”) debt securities.

•Deposit growth. Total deposits were $68.9 billion as of March 31, 2026, an increase of $1.8 billion or 3%, from December 31, 2025, primarily driven by growth in money market and noninterest-bearing demand deposits.

•Capital levels. Stockholders’ equity was $9.0 billion as of March 31, 2026, up $100 million or 1%, from December 31, 2025. Book value per share of $65.70 as of March 31, 2026, increased $1.02 or 2%, compared with December 31, 2025. Tangible book value per share of $62.27 as of March 31, 2026, increased $1.00 or 2%, compared with December 31, 2025. Tangible book value per share is a non-GAAP financial measure. For additional details, see the reconciliation of non-GAAP financial measures presented under Item 2. MD&A — Reconciliation of GAAP to Non-GAAP Financial Measures in this Form 10-Q.