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. 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 2025 was $368 million and $969 million, respectively, which increased $69 million or 23%, and $96 million or 11%, respectively, from the same prior year periods. The year-over-year increases of both the third quarter and first nine months of 2025 were primarily driven by higher net interest income before provision for credit losses and increased noninterest income, partially offset by higher noninterest expense and income tax expense. Provision for credit losses was higher in the first nine months of 2025, compared with the same prior year period. Noteworthy aspects of the Company’s performance for the third quarter and first nine months of 2025 included:

•Net interest income and net interest margin. Third quarter 2025 net interest income before provision for credit losses of $678 million increased $105 million or 18%from thethird quarter of 2024. Third quarter 2025 net interest margin of 3.53% increased 29 bps year-over-year. Net interest income before provision for credit losses was$1.9 billionfor the first nine months of 2025, a $204 million or 12% increase year-over-year. Net interest margin for the first nine months of 2025 was 3.41%, up 13 bps year-over-year. The year-over-year increases in net interest income and net interest margin primarily reflect loan growth, AFS securities’ increase, and the impact of $32 million of discount accretion and interest recoveries from the full payment on purchased credit impaired and workout loans.

•Earnings per share growth. Third quarter 2025 basic and diluted earnings per share (“EPS”) both increased 24% to $2.68 and $2.65, respectively, from the third quarter of 2024. For the first nine months of 2025 basic and diluted EPS both increased 12% to $7.03 and $6.97, respectively, from the first nine months of 2024.

•Profitability ratios. Third quarter 2025 ROA, ROAE and the ROATCE of 1.84%, 17.44% and 18.48%, respectively, were up year-over-year by 22 bps, 145 bps and 140 bps, respectively. For the first nine months of 2025, ROA of 1.68% expanded 6 bps year-over-year. For the first nine months of 2025, ROAE and ROATCE of 15.98% and 16.97%, respectively, were down year-over year by 26 bps and 43 bps, 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. Third quarter 2025 efficiency ratio was 35.59%, compared with 34.36% for the same period in 2024. The first nine months of 2025 efficiency ratio of 36.12% improved 42 bps from 36.54% from the same period in 2024.

•Asset growth. Total assets reached $79.7 billion as of September 30, 2025, an increase of $3.7 billion, from December 31, 2024, primarily driven by a $2.0 billion or 4% increase in net loans held-for-investment and a $1.9 billion or 17% increase in available-for-sale (“AFS”) debt securities.

•Deposit growth. Total deposits were $66.6 billion as of September 30, 2025, an increase of $3.4 billion or 5% from December 31, 2024. The increase was primarily due to increases in time, money market and noninterest-bearing demand deposits.

•Strong capital levels. Stockholders’ equity was $8.6 billion as of September 30, 2025, up $860 million or 11%, from December 31, 2024. Book value per share of $62.39 as of September 30, 2025, increased $6.60 or 12%, compared with December 31, 2024. Tangible book value per share of $58.97 as of September 30, 2025, increased $6.59 or 13%, compared with December 31, 2024. 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.