Kennametal Lawsuit: A Breach Claim, No Class Action Yet
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If you searched “kennametal lawsuit” in October 2026, you probably saw ads about a data breach. Here is the short answer as of October 11, 2026: a ransomware group claimed an attack on the Pittsburgh toolmaker on October 6, 2026. Kennametal has not publicly confirmed it, and we found no class action filed over it. There is no settlement, no fund, no claim form and no deadline. The only major lawsuit against Kennametal is a business dispute with a software supplier.
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Reviewed by Leonard Goldberg, Editor · Last updated
What Happened, and What Is Only Claimed
Kennametal Inc. is an industrial technology company that makes cutting tools and wear-resistant components; its stock trades on the New York Stock Exchange as KMT. It reported 8,073 employees as of June 30, 2026, about 2,500 of them in the U.S.
On October 6, 2026, threat-intelligence trackers reported that a ransomware group had listed Kennametal as a victim and issued an extortion notice threatening to release data unless the company negotiated. That is the attackers' claim, not a confirmed fact. As of October 11, 2026, we found no public statement from Kennametal, no state attorney general notice and no SEC disclosure describing a breach, what data was involved or how many people were affected.
Within a day, plaintiff firms began advertising “investigations” and asking current and former employees and contractors to come forward. An investigation is a search for clients. It is not a lawsuit.
Case Details
No data breach case has been filed that we could find. The Kennametal litigation that does exist is commercial. Software company MachiningCloud announced on February 4, 2025 that it had sued Kennametal in Ventura County Superior Court. The lawsuit alleges that Kennametal used MachiningCloud's confidential information to build a competing sales platform and failed to pay commissions on more than $1 billion of transactions run through the “Novo” platform. Kennametal called the complaint “entirely without merit.”
Kennametal moved the case to federal court: MachiningCloud, Inc. v. Kennametal Inc., No. 2:25-cv-02158 in the U.S. District Court for the Central District of California, before Judge Stanley Blumenfeld Jr., filed there on March 11, 2025. A second suit between the same companies, No. 2:25-cv-10745, was filed in the same court on November 7, 2025 as a patent case. We could not confirm its current status.
Status: No Breach Lawsuit, No Settlement
The MachiningCloud case was still active in October 2026, and a new filing appeared on the docket on October 6, 2026. In its annual report filed August 12, 2026, Kennametal said MachiningCloud first sought more than $330 million. It also said some claims have since been narrowed and that the damages now sought are “significantly lower.” Kennametal says it will defend the case and pursue its own counterclaims. That case is between two companies, and no consumer or employee is a party to it.
Who Could Be Affected
No one knows yet, because the scope of the claimed attack has not been disclosed. Kennametal is a manufacturer, not a consumer brand. If personal data was taken, current and former employees, contractors and job applicants are the most likely affected group. Business contacts at customers and distributors could be affected too. Shoppers are not likely to be in that group.
The practical test is your mail. Companies that confirm a breach of personal data must notify the affected people under state law. That letter says what was exposed, and it is your proof if a class is ever formed. A listing on a ransomware leak site is not a notice. Without a letter, you cannot tell whether your data was involved.
You do not need to sign up to be in a future class. Under Rule 23, you are in a certified class unless you opt out.
Is There Any Money?
As general context, not a prediction: data breach settlements that included employee Social Security numbers have usually paid back documented out-of-pocket losses up to a cap, plus a small flat payment and credit monitoring. Whether that pattern ever applies here depends on facts that are not yet public. Those facts include whether personal data was taken at all.
Kennametal Lawsuit Timeline
- 1
February 4, 2025 — MachiningCloud Sues
The software supplier files in Ventura County Superior Court. It alleges trade-secret theft and unpaid commissions and seeks more than $330 million.
- 2
March 11, 2025 — Moved to Federal Court
The case becomes No. 2:25-cv-02158 in the Central District of California, before Judge Stanley Blumenfeld Jr.
- 3
November 7, 2025 — Second Federal Suit
MachiningCloud files No. 2:25-cv-10745 in the same court as a patent case.
- 4
August 12, 2026 — Annual Report
Kennametal tells investors that MachiningCloud's claims have been narrowed and the damages sought are significantly lower than first asserted.
- 5
October 6, 2026 — Ransomware Claim
A ransomware group lists Kennametal as a victim and threatens to release data. Kennametal has not publicly confirmed a breach.
- 6
As of October 11, 2026 — No Breach Case
Law firms are advertising investigations, but we found no filed class action, settlement, claim form or deadline.
Three Things to Watch For
A ransomware claim that has been announced but not confirmed draws scams. Watch for these:
“Kennametal settlement claim” forms
No settlement exists, so there is no claims site. A form that asks for your Social Security number or bank details to “reserve your payout” is collecting data. It is not filing a claim.
Fake HR or IT emails after a leak
Extortion groups and the people who copy them often target employees with emails that look like messages from HR, payroll or IT. Do not open the link. Check any “reset your password” or “enroll in credit monitoring” message through Kennametal's internal channels.
“Join the class action” ads
As of October 2026, those ads are law-firm intake forms for an investigation. Filling one out may start an attorney-client relationship. It does not register you for any payment.
Kennametal Lawsuit — Questions People Actually Ask
Is there a Kennametal lawsuit over a data breach?
Not that we could find as of October 11, 2026. A ransomware group claimed an attack on October 6, 2026, and law firms are investigating. Our search turned up no class action filed in any court.
Did Kennametal confirm a data breach?
Not publicly as of October 11, 2026. We found no company statement, no state attorney general notice and no SEC disclosure. The only source so far is the attackers' own claim, which trackers have repeated.
Is there a Kennametal settlement or claim form?
No. There is no settlement, fund, administrator, claim form or deadline, for the breach or for anything else involving consumers or employees.
What is the MachiningCloud v. Kennametal lawsuit?
It is a commercial dispute. MachiningCloud alleges that Kennametal misused its confidential information and failed to pay commissions. Kennametal denies this and has filed counterclaims. The main case is No. 2:25-cv-02158 in the Central District of California, and it was still active in October 2026. Individuals cannot recover anything from it.
How much is MachiningCloud asking for?
MachiningCloud first sought more than $330 million. In its annual report filed August 12, 2026, Kennametal said the claims have since been narrowed and the damages sought are significantly lower. Kennametal did not give a new figure.
I work or worked at Kennametal. Was my data taken?
No one has said publicly. If a breach of personal data is confirmed, the company has to send notices to the people affected. Until then, a leak-site listing does not tell you whether your records were included.
Do I need to sign up to be part of a future class action?
No. If a class is ever certified or a settlement is reached, you are included unless you opt out. A court-appointed administrator then notifies class members directly.
What is worth doing right now?
Freeze your credit at all three bureaus. It is free and you can undo it. Treat unexpected HR, payroll or IT emails with suspicion, and keep any breach notice letter you receive.
Separate from this case: were you injured in the last 2 years?
Class-action payouts are fixed amounts through an administrator. A personal injury claim is a different case — and often worth far more. Free estimate, no obligation.
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