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 * FITZMYERS THOMAS J   2. Issuer Name and Ticker or Trading Symbol SIMPSON MANUFACTURING CO INC /CA/ [NYSE:SSD] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President & CEO (Last) (First) (Middle) 4120 DUBLIN BLVD., SUITE 400 3. Date of Earliest Transaction (Month/Day/Year) 08/09/2005 (Street) DUBLIN, CA 94568 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 08/09/2005   X   9,300 A $ 9.3594 609,304 D   Common Stock 08/09/2005   X   9,300 D $ 36.4278 600,004 D   Common Stock 08/10/2005   X   8,700 A $ 9.3594 608,704 D   Common Stock 08/10/2005   X   8,700 D $ 36.4 600,004 D   Common Stock               20,424 (2) I By Trust

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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

Options on Common Stock

$ 9.3594

08/09/2005

X

9,300

01/01/2000(1)

12/31/2005

Common Stock

9,300

$ 9.3594

8,700

D

Options on Common Stock

$ 9.3594

08/10/2005

X

8,700

01/01/2000(1)

12/31/2005

Common Stock

8,700

$ 9.3594

0

D

Options on Common Stock

$ 10.9375

01/01/2001(1)

12/31/2006

Common Stock

18,000

18,000

D

Options on Common Stock

$ 16.45

01/01/2004(1)

12/31/2009

Common Stock

18,000

18,000

D

Options on Common Stock

$ 25.43

01/01/2005(1)

12/31/2010

Common Stock

18,000

18,000

D

Options on Common Stock

$ 34.9

01/01/2006(1)

12/31/2011

Common Stock

9,000

9,000

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
FITZMYERS THOMAS J 4120 DUBLIN BLVD., SUITE 400 DUBLIN, CA 94568	X		President & CEO

Signatures

THOMAS J FITZMYERS		08/10/2005
**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).
(1)	This date represents the first annual vesting period. This option vests equally over four years beginning with the grant date.
(2)	The shares are owned by the Simpson Manufacuturing Co., Inc. Profit Sharing Plan for Salaried Employees (the "Plan") of which the reporting person is a participant. The Plan is qualified under sections 401(a)(26) and 410 of the Internal Revenue Code. The number of shares owned by the reporting person is based on a recent statement.

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