Toshiba denies reports of TDK acquisition talks

Toshiba has denied allegations that it is negotiating to acquire TDK's magnetic head business. The company stated that it does not have a finalized sale agreement in place. Reports emerged suggesting that Toshiba approached TDK in the spring of 2026. Seagate is also named in the discussions, with claims that it joined negotiations in the summer with a higher offer. The potential transaction is described as being worth several billion dollars. Toshiba rejected the claims that it held a meeting in Tokyo last week. It also denied the assertion that it planned to buy the disk head production unit. No confirmed purchase agreement or transaction price has been announced by any party. Seagate and TDK have not commented on the acquisition rumors. The possibility of a joint venture to secure supply is mentioned in the reports.

However, this has not been announced as a decision by the companies. No information has been received from other parties confirming the scope or timeline of the talks. TDK is positioned as the world's independent magnetic disk head supplier. Toshiba relies entirely on TDK for this component. Seagate and Western Digital use their own production but also buy heads from TDK when additional supply is needed. TDK's magnetic head technologies cover the parts that write and read data on disk platters. The company developed the thin film head in 1987. It commercialized the vertical magnetic recording head in 2005. The high-precision TMR read element helps distinguish signals in denser recording areas. As recording density increases, the magnetic fields holding data become smaller.

Maintaining the stability of these fields requires magnetic properties that make writing difficult. MAMR assists writing by generating microwaves from an element at the head tip. HAMR heats the recording surface locally and briefly using a laser. These two methods use different energy sources. TDK's 2022 MAS-MAMR announcement documented development with Toshiba and Showa Denko. TDK announced the shipment of prototype heads at that time. The same announcement noted that the first Spin Torque based method was in Toshiba's 18 TB disk that entered production in 2021. This shows that the two companies' cooperation in the disk head field predates the current acquisition claim. Teknoblog reported the story.