X0508 4 2025-10-27 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 2025-10-27 4 F 0 2380 D 35371 D Common Stock 2025-10-27 4 F 0 1972 D 33399 D Shares withheld pursuant to mandatory provisions of Restricted Stock Unit (RSU) Award Agreement(s) in satisfaction of tax withholding obligations upon vesting of 4,684 RSUs. Shares withheld pursuant to mandatory provisions of Market Share Unit (MSU) Award Agreement in satisfaction of tax withholding obligations upon vesting of 3,883 MSUs. Amount reported includes: (i) 13,189 unvested RSUs, (ii) 1,218 shares of restricted Common Stock received upon settlement of performance stock units, (iii) 108 vested deferred performance units or DPUs, which are Common Stock equivalents, and (iv) 2,259 shares held in Reporting Person's WD-40 Company Profit Sharing / 401(k) Plan account. Ann T. Nguyen, attorney-in-fact for Steven A. Brass 2025-10-28