Ownership Submission
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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(Print or Type Responses)
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

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

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

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