Ex-Trader David Slaine Helped Lead to Rajaratnam, U.S. Says

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David Slaine, a former Galleon Group LLC employee who pleaded guilty to criminal charges, was crucial to the prosecution of Zvi Goffer’s insider-trading ring and helped lead investigators to Raj Rajaratnam and Primary Global Research LLC, U.S. prosecutors said.

Slaine wore a wire to record dozens of conversations with Goffer and others, helping to spur what became the biggest probe of insider trading at hedge funds, prosecutors from the office of U.S. Attorney Preet Bharara in Manhattan said today in a letter to U.S. District Judge Richard Sullivan. Calling Slaine’s cooperation “nothing short of extraordinary,” the government asked for leniency when he’s sentenced.