Former Milwaukee Tool Employee Sentenced: Why Mathew Yang Got 5 Years in Prison

Searches for “former Milwaukee Tool employee sentenced” are trending across the US after a Waukesha County judge sent 31-year-old Mathew Yang to prison for stealing more than $1 million worth of tools from his former employer. Yang, of Wauwatosa, Wisconsin, was sentenced on Friday, August 7, 2026 to five years in state prison followed by five years of extended supervision, and was ordered to repay Milwaukee Tool $1.08 million. Here is everything we know about the case, the scheme behind it, and where Yang will serve his time. Last updated: August 10, 2026.

Who Is Mathew Yang?

Mathew Yang is a 31-year-old man from Wauwatosa, Wisconsin, who worked for Milwaukee Tool, the power tool giant headquartered in Brookfield, Wisconsin. According to court filings, Yang started in the company’s customer supply chain department before moving into an IT role — a position that, in the words of the criminal complaint, gave him “intimate knowledge of the ordering system.” That insider knowledge became the foundation of one of the largest employee theft cases Wisconsin has seen in recent years.

What Happened: The $1 Million Tool Theft Scheme

Court documents filed in Waukesha County Circuit Court describe a scheme that ran from late March 2024 to late March 2025. Yang used his access to Milwaukee Tool’s ordering system to create roughly 115 orders that the warehouse would pick, pack, and ship as normal. Before payment processing kicked in, he deleted the order records — meaning no payment was ever rendered and, for months, no one noticed the missing inventory.

Of the 115 fraudulent orders, 109 shipments were actually delivered to various addresses, including Yang’s own Wauwatosa apartment. The orders totaled more than $1.4 million; after Milwaukee Tool cancelled and recovered six shipments, the company’s loss came to just over $1 million. The vast majority of the orders — over $710,000 worth — were placed in March 2025 alone.

The scheme unraveled when a freight shipping company called Milwaukee Tool’s customer service center in March 2025 to confirm a delivery address for a shipment of approximately 9,000 pounds of tools headed to a Wauwatosa apartment complex. When customer service couldn’t find the order in the system, the company launched an internal investigation and filed a complaint with Brookfield police in April 2025. Investigators later found a spreadsheet titled “selling list” on Yang’s company laptop, with columns for “retail cost” and “selling price” — leading police to believe he was reselling the stolen tools in large volume.

What Sentence Did He Receive?

On August 7, 2026, Yang pleaded no contest to five felonies, including four counts of theft; nine other charges were dismissed as part of a plea negotiation. Waukesha County Judge Michael Maxwell sentenced him to five years of initial confinement in prison followed by five years of extended supervision on one felony theft count. On the remaining felonies, the judge imposed and stayed additional prison time, placing Yang on probation instead. He was also ordered to pay $1.08 million in restitution to Milwaukee Tool.

In court, Yang apologized to his family, saying his wife, son, and parents had suffered because of his decisions and that he had brought them “pain and embarrassment” instead of the honesty and hard work they raised him with.

The sentencing took place on Friday, August 7, 2026, and coverage from Milwaukee-area outlets spread nationally over the weekend. The combination of a household brand name, the sheer scale of the theft — 9,000 pounds of tools in a single shipment — and the audacity of an IT insider gaming his own employer’s systems has driven a surge in searches like “former Milwaukee Tool employee sentenced” and “Milwaukee Tool theft.” Employee theft stories of this magnitude are rare, and this one reads like a how-not-to manual for insider fraud.

Where Will He Serve His Time? Wisconsin Prison Context

Because Yang was convicted of state crimes in a Wisconsin circuit court, he will serve his sentence in the Wisconsin state prison system run by the Wisconsin Department of Corrections — not a federal facility. Wisconsin uses “truth-in-sentencing” and bifurcated sentences: a fixed period of initial confinement behind bars, followed by a fixed period of extended supervision in the community. Unlike states with traditional parole, Wisconsin inmates sentenced under this system generally serve the full confinement portion of their sentence, with no early parole release.

Most new male inmates in Wisconsin are first processed at Dodge Correctional Institution in Waupun, where they are assessed and assigned a security classification before transfer to a long-term facility. A first-time, non-violent offender like Yang would typically be housed in a medium or minimum security institution. If he violates the terms of his extended supervision after release, he can be revoked and returned to prison to serve remaining time. You can read more about what daily life inside a US prison looks like, how Wisconsin state cases differ from federal ones, and how to look up an inmate’s prison records online here on US Prison Guide.

Frequently Asked Questions

How long will Mathew Yang spend in prison?

Yang was sentenced to five years of initial confinement. Under Wisconsin’s truth-in-sentencing laws there is no parole for offenses committed after 1999, so he is expected to serve the full five years behind bars, followed by five years of extended supervision in the community.

How did Mathew Yang steal over $1 million from Milwaukee Tool?

Working in IT with insider knowledge of the ordering system, Yang created around 115 orders that the warehouse fulfilled and shipped, then deleted the order records before payment was processed. Deliveries went to various addresses, including his own apartment, over roughly a year.

How was the Milwaukee Tool theft discovered?

A freight company called Milwaukee Tool in March 2025 to confirm the delivery address for a 9,000-pound shipment of tools going to a Wauwatosa apartment complex. Customer service couldn’t find the order in the system, which triggered an internal investigation and a police complaint in April 2025.

Will Milwaukee Tool get its money back?

The court ordered Yang to pay $1.08 million in restitution to Milwaukee Tool. Restitution is typically collected from prison wages and post-release earnings, so full repayment can take many years, and companies often recover only part of what they are owed.

Will he serve his sentence in a federal prison?

No. Yang was prosecuted under Wisconsin state law in Waukesha County Circuit Court, so he will serve his time in a Wisconsin Department of Corrections facility. Federal prison is reserved for people convicted of federal crimes, such as offenses prosecuted by US Attorneys in federal court.