STI Holdings Data Breach Investigation

Turke & Strauss LLP, a leading data breach law firm, is investigating STI Holdings, Inc., regarding its recent data breach. The STI Holdings data breach involved sensitive personal identifiable information belonging to over 4,000 individuals.


STI Holdings is a transport equipment manufacturing company based in Stoughton, Wisconsin. Founded in 1961 as Stoughton Truck Body, Inc., today, STI Holdings is the parent company of several subsidiaries, including Stoughton Logistics, LLC, Stoughton Rental and Leasing Co., LLC, Stoughton Part Sales, LLC, Stoughton Trailers, LLC, Stoughton Trucking, LLC, and Stoughton Trailers Acceptance Company, LLC. Together, STI Holdings engineers and produces dry vans, trailers, intermodal trailer chassis, and applicable parts. Additionally, STI Holdings facilitates the sale, leasing, and rental of their products. Currently in the process of building a new headquarters in Stoughton, STI Holdings employs more than 1,000 individuals.


On June 9, 2023, STI Holdings discovered that it had experienced a data breach in which sensitive personal identifiable information in its systems may have been accessed and acquired. Through its investigation, STI Holdings determined that an unauthorized actor may have accessed and acquired this sensitive information between May 25, 2023, and June 9, 2023. On December 2, 2023, STI Holdings began notifying individuals whose information may have been impacted, namely current and former employees. The type of information potentially exposed includes:

  • Name
  • Social Security number
  • Bank account information

If you received a breach notification letter from STI Holdings, Inc.:

We would like to speak with you about your rights and potential legal remedies in response to this data breach. Please fill out the form, below, or contact us at (608) 237-1775 or

If you were impacted by the STI Holdings data breach, you may consider taking the following steps to protect your personal information.

  1. Carefully review the breach notice and retain a copy;
  2. Enroll in any free credit monitoring services provided by STI Holdings, Inc.;
  3. Change passwords and security questions for online accounts;
  4. Regularly review account statements for signs of fraud or unauthorized activity;
  5. Monitor credit reports for signs of identity theft; and
  6. Contact a credit bureau(s) to request a temporary fraud alert.

Share This Post: