Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 WD-40 COMPANY (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) Delaware 95-1797918 (I.R.S. Employer Identification No.) For the fiscal year ended August 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE A ...