WD 40 CO — Director's Dealing 2025

Oct 10, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WD 40 CO (WDFC)
CIK: 0000105132
Period of Report: 2025-10-09

Reporting Person: Brass Steven A (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-10-09	Common Stock	A	7783	—	Acquired	33868	Direct
2025-10-09	Common Stock	A	3883	—	Acquired	37751	Direct

Footnotes

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: As of the filing date, the amount reported includes: (i) 14,672 unvested RSUs (which include the grant of RSUs reported in this Form 4), (ii) 3,883 shares of Common Stock to be issued upon settlement of MSUs, (iii) 108 vested deferred performance units or DPUs, which are Common Stock equivalents, and (iv) 2,259 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.