Former chief executive of Intel Corp. Rajiv Goel pleaded guilty on Monday afternoon to two information charges related to the largest hedge fund insider trading case in history.

Goel, 51 years old, admitted to U.S. Federal Judge Alvin Hellerstein that he had passed confidential corporate information to Galleon's founder Raj Rajaratnam.

According to court document, throughout 2007, Goel provided Rajaratnam with details of Intel's quarterly earnings before they were publicly released.

In addition, in early 2008, Goel obtained inside information from a colleague at Intel regarding Intel's plans to invest in a joint venture involving Clearwire Corp. He passed the information to Rajaratnam who, in turn, caused Galleon Tech and Diversified to purchase Clearwire common stocks.

Prosecutors accuse Rajaratnam of paying for the tips by making investments for Goel based on inside information he was receiving from other sources.

Goel was charged with one count of conspiracy to commit securities fraud and one count of securities fraud, which means up to 25 years imprisonment. Goel will be sentenced on May 28 and currently remains free on a 750,000-dollar bail.

Among the 21 people who have been criminally charged in connection with the Galleon case, nine, including Goel, have pleaded guilty so far and several are cooperating with investigators.