However, the nature of the information allegedly passed to China and the timeline of the suspected intelligence activities have not been established publicly.
China has rejected allegations of espionage involving Alice Huang, describing them as baseless speculation.
Nvidia chief at the centre of a major technology dispute
Jensen Huang has led Nvidia for more than three decades and played a central role in transforming the company into a major supplier of processors used in artificial intelligence development.
Nvidia chips are widely used by technology companies, including OpenAI and Meta, making the company a major player in the global AI industry.
Its advanced AI processors have also become a significant issue in the technology rivalry between the United States and China. Washington has imposed restrictions on exports of advanced chips to limit China's access to sensitive technologies.
The investigation into Huang's reported relationship with Alice Huang has therefore drawn attention to corporate security and the broader implications for US national security and the global semiconductor industry.