X0306 4 2017-10-27 0 0000105132 WD 40 CO WDFC 0001213639 REMBOLT JAY 9715 BUSINESSPARK AVENUE SAN DIEGO CA 92131 0 1 0 0 Vice President Finance & CFO Common Stock 2017-10-27 4 F 0 350 D 39502.265 D Common Stock 2017-10-27 4 F 0 827 D 38675.265 D Shares withheld pursuant to mandatory provisions of Restricted Stock Unit (RSU) Award Agreements in satisfaction of tax withholding obligation upon vesting of 927 RSUs (Common Stock equivalents). Shares withheld pursuant to mandatory provisions of a Market Stock Unit (MSU) Award Agreement in satisfaction of tax withholding obligation upon settlement of 2,198 MSUs (Common Stock equivalents). Total includes 6,284.265 shares held in WD-40 Company Profit Sharing Plan (Company Stock Fund) account. Total also includes 1,613 RSUs, all of which are subject to future vesting, 909 MSUs (target number) awarded to the reporting person in 2015, all of which are subject to future vesting, and 310 vested Deferred Performance Units (Common Stock equivalents). MSUs (which are performance-based equity awards) that were granted to the reporting person on October 11, 2016 and October 9, 2017 are not reported herein as beneficially owned Common Stock equivalents. Richard T. Clampitt, attorney-in-fact for Jay Rembolt 2017-10-31