NEW YORK ( TheStreet) -- Rajat Gupta, a former director of Goldman Sachs, is expected to surrender to the FBI Wednesday on criminal charges of leaking inside information to Galleon Group hedge fund founder Raj Rajaratnam, The Wall Street Journal reported, citing people familiar with the matter. Rajaratnam earlier this month was sentenced to 11 years in prison on insider trading charges, the longest-ever for insider trading. If convicted, Gupta would be the highest-ranking corporate executive to fall in a push by the government to root out insider trading, the Journal noted. Gary Naftalis, Gupta's lawyer, said in a statement that Gupta is innocent and "has always acted with honesty and integrity." Gupta "did not trade in any securities, did not tip Rajaratnam so he could trade, and did not share in any profits as part of any quid pro quo," Naftalis said, adding he would fight any charges, the newspaper reported. Specific details of the expected charges, which were sealed, aren't known, the Journal said. A representative for the Manhattan U.S. Attorney's office declined to comment for the Journal. -- Written by Joseph Woelfel >To contact the writer of this article, click here: Joseph Woelfel >To submit a news tip, send an email to: firstname.lastname@example.org.