Patricia Q. Olsem - Oct 27, 2025 Form 4 Insider Report for WD 40 CO (WDFC)

Role
Division President, Americas
Signature
Ann T. Nguyen, attorney-in-fact for Patricia Q. Olsem
Stock symbol
WDFC
Transactions as of
Oct 27, 2025
Transactions value $
$0
Form type
4
Date filed
10/29/2025, 09:16 AM
Previous filing
Oct 10, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Olsem Patricia Q Division President, Americas C/O: WD-40 COMPANY, 9715 BUSINESSPARK AVE., SAN DIEGO Ann T. Nguyen, attorney-in-fact for Patricia Q. Olsem 2025-10-29 0001784383

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WDFC Common Stock Tax liability -335 -5.77% 5.48K Oct 27, 2025 Direct F1
transaction WDFC Common Stock Tax liability -401 -7.32% 5.07K Oct 27, 2025 Direct F2, F3
holding WDFC Common Stock 2.91K Oct 27, 2025 By Trust F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares withheld pursuant to mandatory provisions of Restricted Stock Unit (RSU) Award Agreement(s) in satisfaction of tax withholding obligations upon vesting of 933 RSUs.
F2 Shares withheld pursuant to mandatory provisions of Market Share Unit (MSU) Award Agreement in satisfaction of tax withholding obligations upon vesting of 1,120 MSUs.
F3 Amount reported includes: (i) 1,842 unvested RSUs, (ii) 644 shares of restricted Common Stock received upon settlement of performance stock units or PSUs, and (iii) 89 vested deferred performance units or DPUs, which are Common Stock equivalents.
F4 Under the 2007 Olsem Family Trust, Reporting Person shares voting power and investment discretion with her spouse. Note: 5,274 shares previously reported as held by such trust was incorrect, and the difference is held directly by Reporting Person.