Jensen Huang, co-founder and CEO of Nvidia, has resigned from his position, following a series of allegations that have shaken the tech giant. The company announced his departure on Thursday, with CFO Colette Kress serving as interim CEO. Huang, 63, had led Nvidia for 33 years, transforming it into a $4 trillion company central to the artificial intelligence revolution.

US investigators have alleged that Huang was involved in an extramarital affair with a woman suspected of being a Chinese spy. The relationship, which reportedly began in 2020, has raised national security concerns. Republican Senator Kevin Cramer called for Huang’s resignation, citing the potential risk to US interests.

The scandal has triggered a significant drop in Nvidia’s stock price, with the company losing 4.8% in the London equity market. The allegations come amid ongoing scrutiny of Nvidia’s chip exports to China, which have been a point of contention between the US and Beijing.

Huang’s resignation marks the end of an era for the company. His leadership was instrumental in positioning Nvidia as a leader in AI and graphics processing. The company now faces the challenge of navigating the fallout from the scandal while maintaining its position in the global tech landscape.

The situation highlights the growing tensions between tech innovation and national security. As the company moves forward without its founder, the focus will shift to how it manages the reputational and operational consequences of the allegations.