September 15, 2025 /SemiMedia/ — MinebeaMitsumi announced on September 12 that its public bid for shares of Shibaura Electronics, acting as a white knight to counter Yageo’s acquisition attempt, ended on September 11 without reaching the minimum share threshold. As a result, MinebeaMitsumi will not acquire any shares, significantly increasing the likelihood of Yageo successfully acquiring Shibaura Electronics.

Yageo launched its public acquisition of Shibaura Electronics in May without the company’s consent. MinebeaMitsumi intervened to block the takeover but ultimately failed. Yageo has raised its offer four times, most recently to 7,130 yen per share from an initial 6,635 yen, representing roughly a 7.5% increase. MinebeaMitsumi’s offer was 6,200 yen per share.

Yageo stated that the price increase reflects its commitment to a long-term strategic partnership and confidence in combined synergy, while highlighting Shibaura Electronics’ key role in Yageo’s sensor business, identified as a major growth driver since 2023.

Shibaura Electronics’ core product is the semiconductor temperature sensor (thermistor), which held a 13.5% global market share in 2023, ranking first in the industry. These temperature sensors can be applied in military and aerospace sectors, carrying implications for national and regional economic security.