A former I.B.M. senior executive pleaded guilty on Monday to providing confidential information about Advanced Micro Devices and Lenovo to a friend who was a hedge fund consultant and an alleged participant in a wide-ranging insider trading scheme.

Galleon Group

The executive, Robert W. Moffat Jr., is the 11th individual to plead guilty in the case, which revolves around the Galleon Group hedge fund and its founder, Raj Rajaratnam.