Zachary W. Mazin

Zachary W. Mazin tries complex civil cases arising out of business disputes, structured financial products, and governmental investigations. Currently, he represents trustees of residential mortgage-backed securitizations in actions seeking to recover billions of dollars from the investment banks who packaged and sold defective mortgage loans to unwitting investors. His RMBS work has earned him spots on Lawdragon’s “500 Leading Litigators in America” list (2022-2026), “500 Leading Plaintiff Financial Lawyers” list (2019-2023) and Benchmark Litigation’s “Under 40 Hot List” (2016-2019) and “Future Star” list (2018-2024).

Zach is also an advisor to clients working in the business of sports. He counsels and represents team executives, players, and football agents.

Zach began his career representing a major international bank in the Enron securities class action litigation. Zach and his team obtained a dismissal of the bank from the Enron investors’ lawsuit that wrongly sought to hold it liable for the losses caused by Enron’s fraudulent activity. He also represented the bank in a dispute over its obligation to pay on a $517 million Enron-related credit default swap.

Zach also handles disputes arising out of commercial contracts, business torts, and commercial leases.

• Recognized in the guide to the Lawdragon 500 Leading Litigators in America (2022, 2024-2026)
• Recognized among Lawdragon's 500 Leading Plaintiff Financial Lawyers (2019-2025)
• Recognized in the Benchmark Litigation "Under 40 Hot List," which honors the achievements of the nation’s most accomplished legal partners of the age of forty or younger, (2016-2019)
• Recognized by Benchmark Litigation as a "Future Star" (2018-2026)

The following market and client insights were provided in McKool Smith's Chambers USA's 2025 Client & Market Intelligence Report.

Client Feedback:

• "Zachary Mazin is very strong in his strength of counsel and is excellent at research and writing. He is very creative and very thoughtful...He is a complex litigator and does fantastic plaintiff work."

• Zach is a "highly effective and capable lawyer."

• "...he has always presented himself as open to dialogue and collectively working with us to figure out a solution. This is something we appreciate and is a reason we continue to work with him. He is a good guy, very responsive."

Market Insights:

• "Zachary Mazin is excellent. On the plaintiffs' side, he has a focus on structured products in the financial space, which is complicated. He has been at the forefront of that...He is a practical, level-headed, a formidable adversary and top-notch."

• Zach has "a really great ability to combine aggressive litigation with a collegial atmosphere, which was extremely important in a very complex case against difficult defendants."