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Table of Contents ( Mark One ) ✓ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended August 31 , 2026 or TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File Number : 000-06936 WD - 40 COMPANY WD - 40 COMPANY ( Exact name of registrant as specified in its charter ) Delaware ( State or other jurisdiction of incorporation or organization ) 9715 Businesspark Avenue , San Diego , California ( Address of principal executive offices ) Title of each class 95-1797918 ( I.R.S. Employer Identification No. ) 92131 ( Zip code ) Registrant's telephone number , including area code : ( 619 ) 275-1400 Securities registered pursuant to Section 12 ( b ) of the Act : Common stock , par value $ 0.001 per share Trading Symbol WDFC Securities registered pursuant to Section 12 ( g ) of the Act : Name of exchange on which registered NASDAQ Global Select Market Title of each class None Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes | No¨ * Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes No p