Charged with avoiding trading losses and earning illegal profits totaling more than $276 million in July 2008. He is is serving a nine-year sentence, but he refused to testify against Steve Cohen, so prosecutors could not prove whether or not he told Cohen anything about how he got his information. The son of Indian immigrants, Mr. Martoma was born Ajai Mathew Mariamdani Thomas. He and his family changed their names. He grew up in Merritt Island, Fla., outside Cape Canaveral. After graduating summa cum laude from Duke University in 1995, where he studied biomedicine, ethics and public policy, Mr. Martoma worked in Washington at the National Human Genome Research Institute. He spent a year and a half at Harvard Law School, then dropped out to earn a business degree at Stanford University. Martoma, 38, who resides in Boca Raton, Fla., worked at CR Intrinsic between 2006 and 2010, where he managed money beginning in early 2008 until his departure. CR Intrinsic, was set up as a research engine of SAC. Martoma was compensated richly for his involvement in the insider-trading scheme, the SEC charges. The regulatory agency alleges that at the end of 2008 Martoma received a bonus of $9.3 million, a large part of it resulting from the illegal profits CR Intrinsic and the other unnamed hedge fund, referred to as Investment Adviser.