Steve Ricciardi, managing director in credit derivative sales at Lehman Brothers in New York, has left the firm. He is reported to be headed to Goldman Sachs to run credit derivative sales. Ricciardi could not immediately be reached and Michael Duvally, Goldman spokesman, declined comment. Tasha Pelio, Lehman spokeswoman, said Ricciardi reported to Chris Wait, managing director in high-grade credit sales, who could not immediately be reached. Pelio declined comment on a replacement for Ricciardi.