FORM 4

o Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue.
See Instruction 1(b).

(Print or Type Responses)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section
17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the
Investment Company Act of 1940

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1. Name and Address of Reporting Person *

Fat Wing K.

(Last) (First) (Middle)

777 North Broadway

(Street)

Los Angeles CA 90012

(City) (State) (Zip)

2. Issuer Name and Ticker
or Trading Symbol

Cathay Bancorp, Inc.

CATY

3. I.R.S. Identification
    Number of Reporting
    Person, if an entity
    (voluntary)

4. Statement for
(Month/Day/Year)

1/16/2003

5. If Amendment, Date of
Original (Month/Day/Year)

6. Relationship of Reporting Person(s) to Issuer

(Check all applicable)

ý Director

o 10% Owner

o Officer (give title below)

o Other (specify below)

7. Individual or Joint/Group
Filing (Check Applicable Line)

ý Form filed by One Reporting Person

o Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/ Year)	2A. Deemed Execution Date, if any (Month/Day/ Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/ Year)	2A. Deemed Execution Date, if any (Month/Day/ Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	—		—	—	—	—	—	1,000	D
Common Stock	—		—	—	—	—	—	127,744	I	Family Trust
Common Stock	—		—	—	—	—	—	132,262	I	Frank Fat Inc.
Common Stock	—		—	—	—	—	—	10,030	I	Frank Fat Properties

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date
(Month/Day/
Year)

3A. Deemed Execution Date, if any (Month/Day/
Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)

6. Date Exercisable and Expiration Date
(Month/Day/Year)

7. Title and Amount of Underlying Securities
(Instr. 3 and 4)

8. Price of Derivative Security
(Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)

10. Ownership Form of Derivative Securities: Direct (D) or Indirect (I)
(Instr. 4)

11. Nature of Indirect Beneficial Ownership
(Instr. 4)

Code

(A)

(D)

Date
Exercisable

Expiration
Date

Title

Amount or Number of Shares

Option *

$16.50

(1)

9/17/08

400

Option *

$21.25

(2)

1/20/10

600

Option *

$30.095

(3)

1/18/11

1,000

Option *

$32.55

(4)

2/21/12

1,000

Option

$39.85

1/16/03

1,900

(5)

1/16/13

1,900

Explanation of Responses:

* Previously reported.

(1) The option vests in 2 equal annual installments beginning 9/17/02.

(2) The option vests in 3 equal annual installments beginning 1/20/03.

(3) The option vests in 5 equal annual installments beginning 1/18/02.

(4) The option vests in 5 equal annual installments beginning 2/21/03.

(5) The option vests in 5 equal annual installments beginning 1/16/04.

/s/ Wing K. Fat

** Signature of Reporting Person

1/21/03

Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations.
See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

http://www.sec.gov/divisions/corpfin/forms/form4.htm

Last update: 09/05/2002

FAT WING K 4