Patricia Q. Olsem - Oct 9, 2025 Form 4 Insider Report for WD 40 CO (WDFC)

Signature
Ann T. Nguyen, attorney-in-fact for Patricia Q. Olsem
Stock symbol
WDFC
Transactions as of
Oct 9, 2025
Transactions value $
$0
Form type
4
Date filed
10/10/2025, 08:57 PM
Previous filing
Oct 24, 2024
Next filing
Oct 29, 2025

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 2025-10-10 0001784383

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WDFC Common Stock Award +1.01K +76.65% 2.33K Oct 9, 2025 Direct F1
transaction WDFC Common Stock Award +1.12K +48.07% 3.45K Oct 9, 2025 Direct F2, F4
holding WDFC Common Stock 5.27K Oct 9, 2025 By Trust F3, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents a grant of restricted stock units (RSUs) under the WD-40 Company 2016 Stock Incentive Plan, as amended and restated effective December 12, 2023. Except as otherwise provided in the RSU award agreement, the RSUs vest annually over 3 years.
F2 Represents the vesting of market share units (MSUs) upon certification of market performance achieved. The 3-year performance cliff vesting MSUs were granted on October 10, 2022 under the WD-40 Company 2016 Stock Incentive Plan and will be settled with Issuer's Common Stock on the date provided for in the MSU award agreement.
F3 Under the 2007 Olsem Family Trust, Reporting Person shares voting power and investment discretion with her spouse.
F4 As of the filing date, the amount reported includes: (i) 1,011 unvested RSUs (the grant of RSUs reported in this Form 4), (ii) 1,120 shares of Common Stock to be issued upon settlement of MSUs, (iii) 644 shares of restricted Common Stock received upon settlement of performance stock units or PSUs, and (iv) 89 vested deferred performance units or DPUs, which are Common Stock equivalents.
F5 As of the filing date, the amount reported includes 831 unvested RSUs.