Parker Shi - 01 Mar 2026 Form 4 Insider Report for EAST WEST BANCORP INC (EWBC)

Role: Chief Operating Officer
Signature: /s/ Louisa Wang, as Attorney-in-fact
Issuer symbol: EWBC
Transactions as of: 01 Mar 2026
Net transactions value: -$750,499
Form type: 4
Filing time: 03 Mar 2026, 18:03:28 UTC
Previous filing: 26 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Shi Parker	Chief Operating Officer	135 N. LOS ROBLES AVE. 7TH FLOOR, PASADENA	/s/ Louisa Wang, as Attorney-in-fact	03 Mar 2026	0001903569

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	EWBC	Common Stock	Award	$0	+16,538	+110%	$0.000000	31,505	01 Mar 2026	Direct	F1
transaction	EWBC	Common Stock	Tax liability	$750,499	-6,857	-22%	$109.45	24,648	01 Mar 2026	Direct	F2

* 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.