Among witnesses for the government was Roomy Khan, who once lived near Whitman in Atherton, Calif.

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Raj Rajaratnam obtained this information through a variety of sources, including his former colleague Roomy Khan, former Goldman Sachs executive Rajat Gupta, and Danielle Chiesi.

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Doug Whitman, also a fan of the mosaic theory of investments, was found guilty after a jury said he received information on high tech companies from his former neighbor, Roomy Khan.

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