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

Signature
Ann T. Nguyen, attorney-in-fact for Phenix Q. Kiamilev
Stock symbol
WDFC
Transactions as of
Oct 9, 2025
Transactions value $
$0
Form type
4
Date filed
10/10/2025, 08:50 PM
Previous filing
Oct 24, 2024
Next filing
Oct 28, 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
KIAMILEV PHENIX Q. VP, GC & Chief Compliance Ofcr C/O: WD-40 COMPANY, 9715 BUSINESSPARK AVENUE, SAN DIEGO Ann T. Nguyen, attorney-in-fact for Phenix Q. Kiamilev 2025-10-10 0001896675

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WDFC Common Stock Award +972 +32.23% 3.99K Oct 9, 2025 By Trust F1, F2
transaction WDFC Common Stock Award +821 +20.59% 4.81K Oct 9, 2025 By Trust F2, F3, F4
* 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 Under The Kiamilev Family Trust established on October 5, 2012, Reporting Person shares voting power and investment discretion with her spouse.
F3 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.
F4 As of the filing date, the amount reported includes: (i) 1,659 unvested RSUs (which include the grant of RSUs reported in this Form 4), (ii) 821 shares of Common Stock to be issued upon settlement of MSUs, and (iii) 213 shares held in Reporting Person's WD-40 Company Profit Sharing / 401(k) Plan account. The current balance in the 401(k) account includes quarterly stock dividends received since the last Form 4 filing.