WDFCNasdaq

WD 40 CO

Miscellaneous Chemical Products · DE · CIK 105132

Develops and sells problem-solving maintenance and homecare products globally to create positive lasting memories

red 8-K · 90d

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$3.00B

Market cap

$245.42

Last close

-1.2%

+10.0%

215K

Volume

Price · last 39 sessions+20.1%

May 4L $196.85 · H $248.33Jun 29

238

Total filings

Jun 25, 2026

Last filing

08/31

Fiscal year end

All 8-K · 127 10-Q · 48 DEF 14A · 16 DEFA14A · 16 10-K · 16 SC 13G · 8 8-K/A · 6 10-K/A · 1

Insider Activity

In the 90 days to Feb 5, 2026: 1 insider bought $105K.

Date	Insider	Action	Shares	Price	Value
Feb 5, 2026	Pendarvis DavidDirector	Buy	424	$247.15	$105K
Oct 30, 2025	Pendarvis DavidDirector	Buy	523	$196.37	$103K
Oct 30, 2025	Etchart EricDirector	Buy	500	$194.02	$97K
Oct 28, 2025	Brass Steven APresident and CEO	Buy	362	$200.46	$73K
Oct 28, 2025	Hyzer Sara KathleenVP, Finance & CFO	Buy	200	$200.46	$40K
Oct 28, 2025	Kiamilev Phenix Q.VP, GC & Chief Compliance Ofcr	Buy	55	$200.46	$11K
Oct 27, 2025	Carter Daniel TDirector	Buy	1,000	$199.37	$199K

Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.

What Changed

Risk factors · Oct 21, 2024 → Oct 27, 2025

26 added · 17 removed between the two most recent 10-Ks. The risks a company starts — or stops — disclosing are often the story.

Newly disclosed

For example, in April 2025, the U.S. government announced a number of tariffs on countries which include those we trade with for certain input costs to our products.
Although the SEC attempted to end its defense of the rules in 2025, the litigation remains unsettled and additional rules could be proposed in the future by the SEC.
The increasing number of information technology security threats and the development of more sophisticated cyberattacks, which includes the adoption of emerging technologies such as AI and machine learning, as well as other techniques such as ransomware, pose significant potential risks to the security of our information technology systems and networks, as well as to the confidentiality, availability and integrity of our data.
Although we have concluded that our current products do not contain such “conflict minerals” in our annual evaluations to date, if we were to conclude that these materials exist within our products in the future, we may have difficulty verifying the origin of such materials for purposes of disclosures required by the SEC rules. 13 Table of Contents We are also subject to laws and regulations that impose environmental controls on our business operations, including, among other things, the discharge of pollutants into the air and water, the handling, use, treatment, storage and clean-up of solid and hazardous wastes and the investigation and remediation of soil and groundwater affected by hazardous substances.
In addition, our future success may increasingly depend on highly skilled employees with proficiency in working with artificial intelligence (“AI”), machine learning and other emerging technologies.
Increased integration of AI into our operations could significantly increase cybersecurity and privacy risks, including the risk of unauthorized or misuse of AI tools.
EPR fees have been in place in EIMEA and Canada for several years and are beginning to be established within certain states in the U.S. in calendar year 2025.
Certain of these inputs sourced by our third-party manufacturers to produce our products may increase in cost which may result in our inability to purchase sufficient inventory of inputs for production to meet customer demand and in turn impact our results.
In addition, although our maintenance products often hold strong positions in certain markets, larger diversified companies may enter this market and leverage substantial resources and brand recognition to offer new competing products, which could have an adverse effect on our business, financial condition and results of operations.
If the company that owns and supports the legacy systems were to cease operations or were unable to provide support for this application prior to the implementation of our new information systems, it could adversely affect our daily operations or our business, financial condition and results of operations.
Failure to maximize or to successfully assert our intellectual property rights or our infringement on the intellectual property rights of others could impact our competitiveness or otherwise adversely affect our financial condition and results of operations.
In 2023, the European Commission’s Corporate Sustainability Reporting Directive (“CSRD”) became effective.

No longer disclosed

For example, in February 2022, Russian forces launched significant military action against Ukraine, which resulted in conflict and disruption in the region since that time, various economic sanctions levied against Russia as a result, and increased volatility in the prices of certain specialty chemicals used in our products, among other supply chain disruptions.
For example, the “ Tax Cuts and Jobs Act ” (the “Tax Act”), which became effective beginning January 1, 2018, significantly changed U.S. tax law and tax rates, as well as mandated the application of a one-time “toll tax” on unremitted foreign earnings, among other things.
For example, on March 4, 2024, we acquired all of the issued and outstanding capital stock of our Brazilian distributor, and began direct distribution within Brazil.
Although we have concluded that our current products do not contain such “conflict minerals” in our annual evaluations to date, if we were to conclude that these materials exist within our products in the future, we may have difficulty verifying the origin of such materials for purposes of disclosures required by the SEC rules.
We are also subject to laws and regulations that impose environmental controls on our business operations, including, among other things, the discharge of pollutants into the air and water, the handling, use, treatment, storage and clean-up of solid and hazardous wastes and the investigation and remediation of soil and groundwater affected by hazardous substances.
The additional costs resulting from an inflationary environment and the constraints in our supply chain and distribution networks unfavorably impacted our gross margin and operating results and may do so in the future if such constraints and challenges recur.
There is no guarantee that our security measures will prevent cyberattacks resulting in breaches of our own or our third-party service providers’ databases and systems. 11 Table of Contents Techniques used in these attacks change frequently and may be difficult to detect for periods of time.
The increasing number of information technology security threats and the development of more sophisticated cyberattacks, including ransomware, pose a potential risk to the security of our information technology systems and networks, as well as to the confidentiality, availability and integrity of our data.
Transition risks are the risks that may arise from the adoption of climate-related regulatory policies, including those that may be necessary to achieve the national climate goals in the U.S. and other countries, or risks associated with changing stakeholder expectations and demands.
These geopolitical tensions have continued, and it is uncertain when conditions will improve or whether additional governmental sanctions will be enacted in the future.
Physical risks include acute risks associated with extreme weather events or chronic risks associated with gradual shifts in climate or weather.
A significant portion of our European income is subject to taxation in the U.K. because our European subsidiary is headquartered in the U.K.

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