Irene H. Oh - 01 Mar 2026 Form 4 Insider Report for EAST WEST BANCORP INC (EWBC)

Role: Chief Risk Officer
Signature: /s/ Louisa Wang, as Attorney-in-fact
Issuer symbol: EWBC
Transactions as of: 01 Mar 2026
Net transactions value: -$941,598
Form type: 4
Filing time: 03 Mar 2026, 18:02:06 UTC
Previous filing: 26 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Oh Irene H	Chief Risk Officer	EAST WEST BANCORP, INC., 135 N. LOS ROBLES AVE. 7TH FLOOR, PASADENA	/s/ Louisa Wang, as Attorney-in-fact	03 Mar 2026	0001482107

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	EWBC	Common Stock	Award	$0	+20,081	+23%	$0.000000	105,812	01 Mar 2026	Direct	F1
transaction	EWBC	Common Stock	Tax liability	$941,598	-8,603	-8.1%	$109.45	97,209	01 Mar 2026	Direct	F2
holding	EWBC	Common Stock						2,492	01 Mar 2026	401 (k) Plan

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Performance-Based Restricted Stock Units granted on March 1, 2023 fully vest in three years. Number of vested units depends on meeting pre-established performance criteria. As of March 1, 2026, 179.1% of the units granted on March 1, 2023 were earned and vested. On the settlement date, for each vested Performance-Based Restricted Stock Unit, the reporting person received one share of Common Stock.
F2	Shares withheld for payment of tax liability in connection with the vesting of Performance-Based Restricted Stock Units. Since March 1, 2026 was a Sunday, the number of shares withheld was based on the closing price of the issuer's common stock on February 27, 2026.

Content

Performance-Based Restricted Stock Units granted on March 1, 2023 fully vest in three years. Number of vested units depends on meeting pre-established performance criteria. As of March 1, 2026, 179.1% of the units granted on March 1, 2023 were earned and vested. On the settlement date, for each vested Performance-Based Restricted Stock Unit, the reporting person received one share of Common Stock.

Shares withheld for payment of tax liability in connection with the vesting of Performance-Based Restricted Stock Units. Since March 1, 2026 was a Sunday, the number of shares withheld was based on the closing price of the issuer's common stock on February 27, 2026.