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 * NOBLE WILLIAM B   2. Issuer Name and Ticker or Trading Symbol WD 40 CO [WDFC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Managing Director, Europe (Last) (First) (Middle) BRICK CLOSE, KIIN FARM 3. Date of Earliest Transaction (Month/Day/Year) 07/27/2010 (Street) MILTON KEYNES, X0 MK1 13LJ 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 07/27/2010(1)   M(1)   3,000 A $ 27.27 16,989 D   Common Stock 07/27/2010(1)   S(1)   3,000 D $ 37.06 13,989 (2) D

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

Non-qualified Stock Option

$ 27.27

07/27/2010(1)

M(1)

3,000

10/18/2008

10/18/2015

Common Stock

3,000

(3)

6,000 (4)

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
NOBLE WILLIAM B BRICK CLOSE KIIN FARM MILTON KEYNES, X0 MK1 13LJ			Managing Director, Europe

Signatures

Maria M. Mitchell as attorney-in-fact for William B. Noble		07/29/2010
**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)	Transaction pusuant to trading plan adopted pursuant to Rule 10b5-1 under Securities Exchange Act of 1934.
(2)	Total includes 9,036 Restricted Stock Units and 2,400 Performance Share Units.
(3)	Not applicable.
(4)	In addition to the reported options, the reporting person holds options to acquire 45,200 common shares as follows: 5,200 non-qualified stock options (NQSO) exercisable 10/19/07 at $27.67 exp. 10/19/14; 10,000 NQSO exercisable 09/23/06 at $29.30 exp. 09/24/13; 10,000 NQSO exercisable 10/17/09 at $35.99 exp. 10/17/16; and 20,000 NQSO (6,800 exercisable 10/16/08, 6,600 exercisable 10/16/09, 6,600 exercisable 10/16/10) at $36.03 exp. 10/16/17.

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