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 second quarter and first half of 2026 was $364 million and $721 million, respectively, which increased $53 million or 17%, and $121 million or 20%, respectively, from the same prior year periods. The year-over-year increases were primarily driven by higher net interest income before provision for credit losses, increased noninterest income, and lower provision for credit losses, partially offset by higher noninterest expense. Noteworthy aspects of the Company’s performance for the second quarter and first half of 2026 included:

•Net interest income and net interest margin. Second quarter 2026 net interest income before provision for credit losses was $685 million, an increase of $68 million or 11%from thesecond quarter of 2025. Second quarter 2026 net interest margin was 3.43% up 8 bps from the prior-year quarter. For the first half of 2026, net interest income before the provision for credit losses totaled $1.4 billion, an increase of$139 million or 11% compared with the first half of 2025. Net interest margin was 3.46% for the first half of 2026, an increase of 11 bps year over year.

•Earnings per share growth. Second quarter 2026 basic and diluted earnings per share (“EPS”) each increased 18%to $2.65 and $2.63, respectively, compared with the second quarter of 2025. For the first half of 2026, basic EPS increased 20% to$5.24, while diluted EPS increased 21% to $5.21, compared with the first half of 2025.

•Profitability ratios. Second quarter 2026 ROA, ROAE and ROATCE were 1.75%,16.01% and 16.88%, respectively, representing year-over-year increases of 13 bps, 59 bps and 49 bps, respectively. For the first half of 2026, ROA, ROAE and ROATCE were 1.77%, 16.02% and 16.90%, respectively, up 18 bps, 83 bps and 74 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.

•Efficiency ratios. Second quarter 2026 efficiency ratio was 36.73%, compared with 36.41% in the second quarter of 2025. For the first half of 2026, the efficiency ratio was 36.48%, compared with 36.41% in the prior-year period.

•Asset growth. Total assets reached $84.8 billion as of June 30, 2026, an increase of $4.3 billion from December 31, 2025, primarily driven by a $2.1 billion or 4% increase in net loans held-for-investment and a $1.4 billion or 10% increase in available-for-sale (“AFS”) debt securities.

•Deposit growth. Total deposits were $70.1 billion as of June 30, 2026, an increase of $3.0 billion or 4%, from December 31, 2025, primarily driven by growth in noninterest-bearing demand and money market deposits.

•Capital levels. Stockholders’ equity was $9.2 billion as of June 30, 2026, up $347 million or 4%, from December 31, 2025. Book value per share of $67.48 as of June 30, 2026, increased $2.80 or 4% compared with December 31, 2025. Tangible book value per share of $64.06 as of June 30, 2026, increased $2.79 or 5% 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.