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 * RIDGE GARRY O   2. Issuer Name and Ticker or Trading Symbol WD 40 CO [WDFC] 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) 9715 BUSINESSPARK AVENUE 3. Date of Earliest Transaction (Month/Day/Year) 10/08/2018 (Street) SAN DIEGO, CA 92131 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 10/08/2018   A   3,994 (1) A (1) 93,618.575 D   Common Stock 10/08/2018   A   4,418 (2) A (2) 98,036.575 (3) D   Common Stock               12,433.537 I By Spouse (4)

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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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
RIDGE GARRY O 9715 BUSINESSPARK AVENUE SAN DIEGO, CA 92131	X		President & CEO

Signatures

Richard T. Clampitt, attorney-in-fact for Garry O. Ridge		10/10/2018
**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)	Restricted Stock Units (Common Stock equivalents) were granted pursuant to the WD-40 Company 2016 Stock Incentive Plan. The Restricted Stock Units (RSUs) will be settled solely with Issuer Common Stock upon an annual vesting schedule as provided for in the Award Agreement for the RSUs as follows: 34% not later than November 15, 2019, 33% not later than November 15, 2020, and 33% not later than November 15, 2021.
(2)	Acquisition of additional vested Market Share Units (Common Stock equivalents) upon certified performance vesting of Market Share Units (MSUs) awarded to the reporting person on October 12, 2015. Vested MSUs will be settled solely with Issuer Common Stock not later than November 15, 2018.
(3)	Total includes 1,271.575 shares held in WD-40 Company Profit Sharing Plan (Company Stock Fund) account. Total also includes 18,573 RSUs, of which 12,689 are subject to future vesting, 8,836 vested MSUs, and 967 vested Deferred Performance Units (Common Stock equivalents).
(4)	The reporting person disclaims beneficial ownership of these shares and this report of indirect beneficial ownership shall not be deemed an admission that the reporting person is, for purposes of Section 16 of the Act or otherwise, the beneficial owner of such shares.

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