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

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 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 * GIESE THOMAS P   2. Issuer Name and Ticker or Trading Symbol AMERON INTERNATIONAL CORP [AMN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Vice Pres., Water. Trans. Grp. (Last) (First) (Middle) 245 SO. LOS ROBLES AVE. 3. Date of Earliest Transaction (Month/Day/Year) 04/18/2006 (Street) PASADENA, CA 91101 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) 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) Code V Amount (A) or (D) Price Common Stock 04/18/2006   M   8,000 A $ 24.875 33,698 D   Common Stock 04/18/2006   M   3,000 A $ 29.375 36,698 D   Common Stock 04/18/2006   M   3,000 A $ 19.0625 36,698 D   Common Stock 04/18/2006   M   6,000 A $ 19.5625 45,698 D   Common Stock 04/18/2006   S   20,000 D $ 67.6368 25,698 D   Common Stock               454 I 401(k) Savings Plan

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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 Security: Direct (D) or Indirect (I) (Instr. 4)

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

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Employee Stock Option

$ 24.875

04/18/2006

M

8,000

01/30/1998

01/30/2012

Common

8,000

$ 24.875

0

D

Employee Stock Option

$ 29.375

04/18/2006

M

3,000

01/29/1999

01/29/2013

Common

3,000

$ 29.375

0

D

Employee Stock Option

$ 19.0625

04/18/2006

M

3,000

01/28/2000

01/29/2014

Common

3,000

$ 19.0625

0

D

Employee Stock Option

$ 19.5625

04/18/2006

M

6,000

01/27/2001

01/27/2015

Common

6,000

$ 19.5625

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
GIESE THOMAS P 245 SO. LOS ROBLES AVE. PASADENA, CA 91101			Vice Pres., Water. Trans. Grp.

Signatures

Cynthia A. Iwasaki, Power of Attorney		04/18/2006
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).

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