X0508 4 2023-10-24 0000105132 WD 40 CO WDFC 0001691913 Brass Steven A C/O: WD-40 COMPANY 9715 BUSINESSPARK AVE. SAN DIEGO CA 92131 true true President and CEO false Common Stock 2023-10-24 4 F 0 869 D 20115 D Shares withheld pursuant to mandatory provisions of Restricted Stock Unit (RSU) Award Agreement(s) in satisfaction of tax withholding obligations upon vesting of 2,508 RSUs. Total includes: (i) 973 shares of restricted Common Stock received upon settlement of performance share units or PSUs, (ii) 7,500 unvested RSUs, (iii) 108 vested deferred performance units or DPUs, which are common stock equivalents, and (iv) 1,776 shares held in the WD-40 Company Profit Sharing / 401(k) Plan. Ann T. Nguyen, attorney-in-fact for Steven A. Brass 2023-10-26