Phenix Q. Kiamilev - 08 Oct 2026 Form 4 Insider Report for WD 40 CO (WDFC)

Reporting relationship: VP, GC & Chief Compliance Ofcr
Issuer ticker: WDFC
Reported as of: 08 Oct 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 13 Oct 2026, 19:05:51 UTC
Prior SEC filing: 29 Oct 2025
Source filing: View source filing
Reporting owner signature: Ann T. Nguyen, as attorney-in-fact for Phenix Q. Kiamilev

Key filing fact

Phenix Q. Kiamilev filed Form 4 for WD 40 CO (WDFC) on 13 Oct 2026.

Key facts

This page summarizes Phenix Q. Kiamilev's Form 4 filing for WD 40 CO (WDFC).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 13 Oct 2026, 19:05.

Change

Previous filing in this sequence was filed on 29 Oct 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001896675 Primary reporting owner

KIAMILEV PHENIX Q.

Relationship: VP, GC & Chief Compliance Ofcr
Address: C/O: WD-40 COMPANY, 9715 BUSINESSPARK AVENUE, SAN DIEGO
Signature: Ann T. Nguyen, as attorney-in-fact for Phenix Q. Kiamilev
Signature date: 13 Oct 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

WDFC transaction

Common Stock

Award

Transaction value
Shares: +1,103
Change %: +26%
Price
Shares after: 5,410
Date: 08 Oct 2026
Ownership: By Trust
Footnotes: F1, F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote 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.

Footnote F2

As of the filing date, the amount reported includes: (i) 1,955 unvested RSUs (which include the grant of RSUs reported in this Form 4), (ii) 68 shares of restricted Common Stock received upon settlement of performance share units or PSUs, and (ii) 272 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.

Footnote F3

Under The Kiamilev Family Trust established on October 5, 2012, Reporting Person shares voting power and investment discretion with her spouse.