Diego Rotsztain

Chief Governance and Legal Officer StoneX Group

Last Reviewed: October 1, 2026

Executive Summary

Diego Rotsztain has been StoneX Group’s Chief Governance and Legal Officer since August 2020, when StoneX acquired GAIN Capital. At GAIN he had been Executive Vice President, General Counsel and Secretary from 2011 and also led corporate development from 2012. Earlier he practised securities and mergers and acquisitions law at Mayer Brown and Davis Polk & Wardwell, after clerking for a federal judge in the Eastern District of New York. StoneX Group ranked No. 31 on the 2026 Fortune 500.

Career Highlights

• Chief Governance and Legal Officer of StoneX Group since August 2020.
• Executive Vice President, General Counsel and Secretary of GAIN Capital, 2011 to 2020.
• Head of Corporate Development at GAIN Capital from 2012.
• Law clerk, U.S. District Court for the Eastern District of New York, 1997 to 1998.

Professional Journey

Rotsztain clerked for Judge David G. Trager of the U.S. District Court for the Eastern District of New York from 1997 to 1998. He then practised at Mayer Brown and Davis Polk & Wardwell, specialising in securities and merger and acquisition transactions and advising companies on SEC reporting and corporate governance.

In January 2011 he became Executive Vice President, General Counsel and Secretary of GAIN Capital, and from 2012 also its Head of Corporate Development.

After StoneX acquired GAIN, he was appointed Chief Governance and Legal Officer on 1 August 2020.

Education

No first-party source read for this profile states his education.