X0306 4 2015-05-18 0 0000105132 WD 40 CO WDFC 0001191649 RIDGE GARRY O 1061 CUDAHY PLACE SAN DIEGO CA 92110 1 1 0 0 President & CEO Common Stock 2015-05-18 4 M 0 3556 36.03 A 81567.613 D Common Stock 2015-05-18 4 S 0 3556 86.03 D 78011.613 D Common Stock 2015-05-19 4 M 0 3701 36.03 A 81712.613 D Common Stock 2015-05-19 4 S 0 3701 86.03 D 78011.613 D Common Stock 2015-05-20 4 M 0 435 36.03 A 78446.613 D Common Stock 2015-05-20 4 S 0 435 86.03 D 78011.613 D Common Stock 11744.023 I By Spouse Non-qualified Stock Option 36.03 2015-05-18 4 M 0 3556 D 2010-10-16 2017-10-16 Common Stock 3556 16444 D Non-qualified Stock Option (Common Stock) 36.03 2015-05-19 4 M 0 3701 D 2010-10-16 2017-10-16 Common Stock 3701 12743 D Non-qualified Stock Option (Common Stock) 36.03 2015-05-20 4 M 0 435 D 2010-10-16 2017-10-16 Common Stock 435 12308 D Transaction pursuant to trading plan adopted pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934. Total includes 1,205.613 shares held in WD-40 Company Profit Sharing Plan (Company Stock Fund) account. Total also includes 15,768 Restricted Stock Units, of which 9,884 are subject to future vesting, and 15,709 Market Share Units, all of which are subject to future vesting. Not applicable. The reporting person disclaims beneficial ownership of these shares and this report of indirect beneficial ownership shall not be deemed an admission that the reporting person is, for purposes of Section 16 of the Act or otherwise, the beneficial owner of such shares. Richard T. Clampitt, as attorney-in-fact for Garry O. Ridge 2015-05-20