Intel’s chief executive officer retired effective immediately, the legacy Silicon Valley stalwart announced Monday, a shakeup that follows an extended period of stock market underperformance for the semiconductor chipmaker.

On Monday, Intel announced that its CEO Pat Gelsinger was stepping down from his post after more than three years.

Computer chip maker Intel announced the retirement of chief executive Pat Gelsinger on Monday, raising new questions about the company’s future even as the United States is set to give it billions of dollars to build up the country’s ability to manufacture chips at home.

Intel CEO Pat Gelsinger has retired, the struggling chipmaker said Monday in a surprise announcement. Two company executives, David Zinsner and Michelle Johnston Holthaus, will act as interim co-CEOs while the company searches for a replacement for Gelsinger,

Intel Chief Executive Pat Gelsinger retired abruptly, ending a nearly four-year run that saw the chip maker fall behind rivals in building semiconductors to power the artificial-intelligence boom. The company on Monday said it named Chief Financial Officer David Zinsner and Michelle Johnston Holthaus,