Feds in LA looking into Goldman Sachs banker

The case involves Matthew Korenberg, an SF-based investment banker, and whether he illegally tipped off a now-defunct hedge fund called the Galleon Group. You might recall that Galleon had been run by Raj Rajaratnam, who was convicted on charges of conspiracy and securities fraud. Korenberg is at least the third Goldman executive under investigation as part of the government's insider trading inquiry. From DealBook, which broke the story:

Federal prosecutors in Los Angeles have been examining Galleon's trading in at least two healthcare companies involved in large merger transactions on which Goldman's bankers advised. The deals, according to a person briefed on the investigation, are a January 2009 takeover of Advanced Medical Optics by Abbott Laboratories, and MedImmune's acquisition by AstraZeneca in 2007. Mr. Korenberg worked on a Goldman team that advised Advanced Medical Optics, whose shares spiked about 150 percent on the deal was announced.