New York Times reports Nvidia CEO Jensen Huang had a second extramarital relationship, with a vice president who reports to him

Nvidia Chief Executive Jensen Huang had an extramarital relationship with Kimberly Powell, the company's vice president of health care who reports to him, The New York Times reported Wednesday, citing five people who worked at the company.

The Times said the relationship has been discussed inside Nvidia and had not been previously reported. Huang, 63, and Powell, 48, are both married to other people, the newspaper said. Powell joined Nvidia in 2008 and has been vice president of health care since late 2017.

Two of the people told the Times that Huang and Powell were seen being affectionate at a San Jose, Calif., hotel during Nvidia's GTC conference in March. Three people briefed on the incident said a bystander recorded it on a phone. The Times said it has not seen the video. According to those people, Huang's security team noticed the bystander, took the person aside and offered a nondisclosure agreement.

When a Times reporter reached Huang by phone Wednesday and asked about the relationship with Powell, he said, "I don't think you should be talking to me directly," and ended the call, the newspaper reported. Nvidia declined to provide a statement, the Times said, and Powell did not immediately respond to a request for comment. Yahoo Finance also carried the Times report.

Nvidia's code of conduct tells employees to "avoid situations where our actions create conflict," including "personal relationships," and says the company "promptly investigates reports of misconduct," according to the Times.

Nvidia shares fell more than 7% in after-hours trading Wednesday after The Wall Street Journal reported that the company's board is preparing to oust Huang, CNBC reported. CNBC said that report landed minutes after the Times story. Nvidia did not immediately respond to CNBC's request for comment.

The Times report comes days after Huang told employees he had been unfaithful in his marriage, in a memo that followed reporting he had an affair with Alice Huang, a Chinese executive whom U.S. intelligence officials believe is a spy. Nvidia's board has opened an independent investigation and hired the law firm Wachtell, Lipton, Rosen & Katz, with former acting U.S. attorney Joon H. Kim leading the work. House Republican committee chairs have also asked Huang for a closed-door briefing. Serious Business has previously reported on that investigation, the congressional request and Huang's message to staff.