Mr. Rush has more than 25 years of experience advising clients and provided expertise on critical issues involving valuation, finance, and economics. He leads projects, develops complex financial models, and testifies on behalf of businesses and sovereigns around the world. His approach to damages claims is methodical, transparent, and practical.
Washington, DC
Mr. Rush has advised claimants and respondents across six continents facing critical and time-sensitive challenges. He has served as an expert in ICSID, ICC, AAA-ICDR, JCAA arbitrations, and U.S. court cases.
Mr. Rush’s work has spanned many industries including: financial services, telecom, mining, real estate, transportation, luxury goods, infrastructure, technology, and energy. He has a track record of successful quantum outcomes, which has helped establish influential damages precedents.
Lexology Index’s list of top experts quote clients who describe Garrett as “an esteemed expert, praised for his diligent and detail-oriented approach”; “technically outstanding, constantly available around the clock and user-friendly”; “among the very best of the best”; and “balanced and enormously credible on the stand.”
Mr. Rush’s work as a damages and valuation expert is informed by previous roles analyzing anticompetitive trade and commercial practices as well as advising private equity backed companies on revenue enhancement strategies.
Secretariat Experts Receive Recognition in Lexology Index Thought Leaders – USA 2025
Secretariat is proud to announce that 13 Secretariat experts have been recognized by Lexology Index (formerly Who’s Who Legal) as USA Thought Leaders in its 2025 rankings.
The 2025 Artificial Intelligence Report, conducted by Secretariat in collaboration with ACEDS, has revealed groundbreaking insights into the rapidly evolving role of artificial intelligence (AI) in the legal industry. With a focus on Generative AI (GenAI) and its increasing integration into legal workflows, the survey provides essential data for organizations navigating the future of legal practice and technology. Now in its third year, the report’s research and analysis was once again led by legal AI expert Richard Finkelman in collaboration with ACEDS. This year also marks the first partnership with Secretariat to sponsor this comprehensive study.
Secretariat and ACEDS 2025 Artificial Intelligence Report
We’re excited to announce the launch of our latest Artificial Intelligence (AI) global report in collaboration with ACEDS, providing a critical snapshot of industry sentiment, adoption trends, and the evolving role of AI in legal practice.