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.
Secretariat’s Norman Harrison and Ben Boorer, together with Taylor Wessing attorneys Natasha Zahid and Mohammed Tartir, dive into the latest whistleblower issues and trends across the US, Europe, and the Middle East in their article, “When the Whistle Blows.”
Secretariat Experts Contribute to “2024 Annual Review of Antitrust Law Developments”
Secretariat team members Stuart Gurrea, Jéssica Dutra, Wei Tan, Pablo Varas, and Noah Case have contributed to “Chapter I — Restraints of Trade” in the recently published “2024 Annual Review of Antitrust Law Developments” from the ABA Antitrust Law Section. Michael Koenig contributed to “Chapter VIII — Civil Government Enforcement”.