Hard Disk Drive (HDD) Suspension Assemblies Antitrust Litigation

A class action antitrust lawsuit was filed on behalf of Reseller Plaintiffs and End-User Plaintiffs against Defendants TDK Corporation; Hutchinson Technology Inc.; Magnecomp Precision Technology Public Co., Ltd.; Magnecomp Corporation; and SAE Magnetics (H.K.) Ltd. (together, “TDK Defendants”); and NHK Spring Co. Ltd.; NHK International; NAT Peripheral (Dong Guan) Co.; Ltd., NAT Peripheral (Hong Kong) Co. Ltd.; and NHK Spring (Thailand) Co., Ltd. (together, “NHK Defendants”). This Notice only applies to End-User Plaintiffs.

The lawsuit alleges Defendants conspired to fix prices of suspension assemblies (“SAs”), a component contained in hard disk drives (“HDD”). Suspension assemblies are a necessary component of hard disk drives and are found in products such as standalone storage devices (for example, bare, portable, or external hard drives), laptop and desktop computers, and enterprise servers and storage arrays. The End-User Plaintiffs allege they purchased such “finished products” containing SAs and that prices were higher beacuse of the supracompetitive SA prices initially charged by Defendants to hard disk drive manufacturers, who “passed on” those price increases to the End-User Plaintiffs.

The Court “certified” an End-User Class defined as all persons and entities who, during the time period January 1, 2003, to December 31, 2016, in the Indirect Purchaser States, purchased Standalone Storage Devices or Computers, not for resale, which included SAs manufactured or sold by Defendants.

The Indirect Purchaser States include Arkansas, Arizona, California, Florida, Hawaii, Iowa, Kansas, Maine, Massachusetts, Michigan, Minnesota, Montana, Nebraska, Nevada, New Hampshire, New Mexico, New York, North Carolina, North Dakota, Oregon, Rhode Island, South Carolina, South Dakota, Tennessee, Utah, Vermont, West Virginia, Wisconsin, and District of Columbia.

The Court has not decided who is right or wrong. There is no money available now and no guarantee there will be. However, if you are a member of the End-User Class described above, your legal rights are affected, and you have a choice to make now.

Documents here.

Notice is available here.

Your Legal Rights and Options

Exclude Yourself DEADLINE: August 23, 2026

Get out of this lawsuit. Get no money or benefits if any are available in the future. Keep the right to sue separately. You will be excluded from this lawsuit and if money or benefits are later awarded, you will not receive any. You will keep any right to file your own lawsuit or be part of any other lawsuit against Defendants at your own expense, and with your own lawyer about the same legal claims in this lawsuit.

Do Nothing

Stay in this lawsuit. Await the outcome. Give up the right to sue separately. By doing nothing, you keep the possibility of getting money or benefits that may come from a trial or a settlement. You will give up your right to sue Defendants separately. You will be bound by any future judgment in this lawsuit.

The End-User Plaintiffs must prove their legal claims against Defendants at trial. If you do not ask to be excluded from the lawsuit and money or benefits are obtained from Defendants, you will be notified about how to receive your benefits.