"From 2003 through 2009, Kumar and Rajaratnam, who met in the 1980s while they were both at the same business school, conspired to engage in insider trading," a statement from the prosecutor's office said.
Kumar received "amounts ranging up to one million dollars in certain years," the statement said. "Specifically, in 2003, Rajaratnam approached Kumar and offered to pay him up to 500,000 dollars per year for information."
"After Kumar provided this information to Rajaratnam, Rajaratnam directed trading for the Galleon Technology Funds on the basis of it, and made at least 19.7 million dollars in illegal profits," the prosecutor's office said.
US Attorney Preet Bharara said Kumar was cooperating with the government's probe into Galleon.
"With his guilty plea today, Anil Kumar acknowle