Sean Mullen, senior marketer in equity derivatives, and David Himmel, high-net-worth salesman, have quit Commerzbank Securities in New York. Separately, a trader specializing in convertible bond-based trategies has returned. Himmel reported to Sam Gottesman, regional head of derivatives sales. He referred calls to Ed Mitchell, spokesman in New York, who declined comment. Mullen reported to Kumar Doraiswami, head of institutional sales, who did not respond to messages. Neither Mullen nor Himmel could be reached.
Chris Golembiewski, a credit trader at WestLB, has rejoined Commerz a little over a year after leaving. Eric Langille, head of credit flow trading at Commerzbank, and Katrin Rueffer, spokeswoman at WestLB in New York, did not return calls.
