Scott Diamond is Counsel at Lehman & Eilen, where he advises clients on derivatives, securities, and complex structured products. His practice encompasses providing legal and regulatory advice to securities intermediaries—including clearing and introducing brokers, municipal and investment advisors, investment companies, alternative trading services, and hedge funds—as well as derivatives intermediaries such as swap dealers, commodity trading advisors, and swap execution facilities. He is active in transactional work, provides strategic regulatory counsel, and represents clients in agency and self-regulatory enforcement matters.

With more than three decades of experience at the intersection of banking, securities, and derivatives law, Scott has served in senior leadership roles across the financial sector. Before joining Lehman & Eilen, he co-led Ballard Spahr’s Derivatives, Structured Products, and Secondary Markets Team. He previously held positions as Managing Director, Deputy General Counsel, and Head of the Investment Banking Legal Group at Sumitomo Mitsui Banking Corporation, where he oversaw a team of attorneys through the 2008 financial crisis, significant litigation involving the Lehman Brothers estate and insurers, and the implementation of Dodd-Frank, the Volcker Rule, and LIBOR transition.

Earlier in his career, Scott was Futures and Derivatives Counsel at Prudential Financial and a Public Defender in Saint Croix USVI.  He began his legal career at the Commodity Futures Trading Commission. Across these diverse roles, he has consistently partnered with clients to maximize opportunities while minimizing risk, ensuring compliance with evolving U.S. and global regulatory frameworks.

Clients value Scott’s deep knowledge of securities and derivatives regulations, his extensive buy and sell-side experience, and his strong relationships with both regulators and market participants. His work spans equity derivatives, interest rate hedging, commodity finance, foreign exchange, options strategies, treasury asset-liability management, anti-money laundering, debt capital markets, fixed-income and equity trading, globally branded research, and related compliance and policy matters.

Education
  • American University – Washington College of Law, J.D. 1990
  • University of Colorado at Boulder, BA 1987
Admissions & Certifications
  • New York Bar
  • Past Series 24, FINRA Supervisory Principal