As of November 6, 2026, WD-40 Co is a publicly traded company (Nasdaq: WDFC); its largest reported holder is BlackRock, with 14.3% on Schedule 13G/A of October 17, 2025, then Vanguard (7.78%). The largest insider holding is Steven A. Brass, the chief executive and president, with 40,517 shares (0.30% of shares outstanding), per Form 4 of October 27, 2026 (Schedule 13G/A, October 17, 2025).
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Is WD-40 Co a real, registered company?
- WD-40 Co files with the SEC under CIK 105132 (its SEC filings).
- Its shares are listed under the ticker WDFC on Nasdaq (SEC company record).
- Incorporated in Delaware; business address in San Diego, California, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under WD-40 Co in our court records and SEC 8-K records (as of 2026-11-06).
- Leadership changes: the latest reported is Sara K. Hyzer, Chief Financial Officer (Form 8-K filed 2026-06-04). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Vanguard (filed 2026-04-30).
Who are WD-40 Co's owners and officers?
WD-40 Co: incorporated in Delaware; business address in San Diego, California; industry Miscellaneous Chemical Products (Form D, 2026-06-04).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G, 2026-04-30 | Vanguard Capital Management | 5.26% |
| Schedule 13G, 2026-04-29 | Vanguard Portfolio Management | 7.78% |
| Schedule 13G/A, 2026-03-27 | The Vanguard Group | 0% |
| Schedule 13G/A, 2025-10-17 | Blackrock, Inc. | 14.3% |
Questions about who owns WD-40 Co
Who owns WD-40 Co?
On this page, 3 holders' latest ownership filings report 5% or more of WD-40 Co: Blackrock, Inc. (14.3%, Schedule 13G/A, filed 2025-10-17), Vanguard Portfolio Management (7.78%, Schedule 13G, filed 2026-04-29) and Vanguard Capital Management (5.26%, Schedule 13G, filed 2026-04-30).
Who are the largest shareholders of WD-40 Co?
By the share each holder's latest filing reports, the largest holders of WD-40 Co on this page are Blackrock, Inc. (14.3%), Vanguard Portfolio Management (7.78%) and Vanguard Capital Management (5.26%).
When did Blackrock, Inc. buy into WD-40 Co?
The filings give report dates, not purchase dates. The earliest filing from Blackrock, Inc. on this page is the Schedule 13G/A, filed 2025-10-17, reporting 14.3%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 4 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-06-04 | Sara K. Hyzer | Chief Financial Officer | departed |
Which insiders own WD-40 Co shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , the chief executive and president: 40,517 shares (0.30% of shares outstanding) (Form 4, 2026-10-27).
- , a director: 9,349 shares (0.07% of shares outstanding) (Form 4, 2025-12-12).
- , the president and americas: 8,210 shares (0.06% of shares outstanding), 5,296 held directly and 2,914 indirectly (Form 4, 2026-10-27).
- , a director: 8,097 shares (0.06% of shares outstanding) (Form 4, 2025-10-29).
- , a director: 7,817 shares (0.06% of shares outstanding) (Form 4, 2025-12-12).
Shares outstanding: 13,392,483 as of 2026-10-20, from the company's latest SEC cover page.
How much has WD-40 Co raised?
No fundraising or offering filing from WD-40 Co is on file with us.
Keep reading
More on WD-40 Co and the records around it.
WD-40 Co elsewhere on the record
- Leadership changes Sep 2026
Companies that share a holder
- Vanguard Portfolio Management also filed stake reports on 941 other companies: Newmark Group Inc (Nov 2026), A10 Networks Inc (Oct 2026), ADT Inc (Oct 2026)
- Vanguard Capital Management also filed stake reports on 1495 other companies: A10 Networks Inc (Oct 2026), Altisource Portfolio Solutions SA (Oct 2026), Alto Neuroscience Inc (Oct 2026)
- BlackRock, Inc. also filed stake reports on 1596 other companies: AvePoint, Inc. (Nov 2026), BIOMARIN PHARMACEUTICAL INC (Nov 2026), MSG RANGERS CORP (Nov 2026)
Related pages
Filings, cases and notices link to their records. A not-found line names the records searched; it is not proof of absence.
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