Steffen Gemuenden, RTS CEO, said: "Alex has played a key role in the global growth and evolution of RTS from a front-end trading screen vendor to a comprehensive solutions provider that offers connectivity to more than 130 marketplaces worldwide. We will miss him, but we wish him the very best as he embarks on the next stage of his career."

Lamb said: "I'm particularly proud of our achievements and the role I was able to play in helping transform the company for the benefit of our clients. It's been exciting to lead change and position the firm in an increasingly competitive environment, while helping to refine and communicate the value proposition RTS offers. Having realized the key strategic objectives that were outlined when I was named to the Executive Board, I decided I am ready to pursue new challenges."

Lamb joined RTS in 2006.