Lehman Brothers has reportedly promoted John Wickham, co-head of global equity derivatives in New York, as sole head of the division. Wickham's former co-head, Mark Sanborn, will now head up global program trading, said officials familiar with the reorganization. Wickham and Sanborn did not return calls. Meanwhile Dave Gittings, co-head of U.S. equity derivatives sales, has left the firm. Bill Levy, who joined Lehman last year to co-head the group with Gittings, has assumed sole responsibility for the role. Gittings declined comment and Levy did not return calls.