Duke Advisory Group is  unique from other eDiscovery firms servicing the legal services community.  We combine best practices, workflows, leading technologies, and cost reduction strategies which enable our clients to achieve increased, measurable results. 
Greg W. Duke
President & CEO
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Since entering the eDiscovery marketplace in 2005, Greg has lead sales, marketing, client service and consulting teams delivering progressive solutions  across their eDiscovery and compliance needs. The technology innovation has rapidly evolved over the past 15 years requiring more complex skill set and workflows to effectively manage eDiscovery requirements. Greg has helped his clients address and resolve e-discovery challenges head-on by aligning people, workflows, and technology to deliver client value.


Greg has worked on a diverse portfolio of matters that includes the following:

  • Handled a multibillion-dollar product liability case for a pharmaceutical firm in which more than 30 terabytes of ESI.

  • Managed an HSR Second Request for the merger of two telecommunication firms consisting of over 2.5 terabytes of ESI

  • Consulted with multiple corporations and law firms associated with the MTBE (methyl tertiary-butyl ether) groundwater contamination lawsuits

  • Established a consistent discovery response plan across multiple law firms and corporations in several multidistrict litigation matters

  •  Collected, processed, reviewed, and produced responsive data relating to Alaska north slope oil spill

Andy Trabilsy
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Andy has over 25 years of experience as a consultant and sales leader in the areas of enterprise software, technology and professional services for the e-discovery, data hosting and information governance markets.


He has created partner programs and developed sales teams for several companies, including CA, Fios, StoredIQ (IBM), and Catalyst Repository Systems. Andy excels at providing sales enablement and optimization solutions using proven methods, processes and measurements to achieve financial and business objectives.

Andy has an MBA in finance and an MA in international business from the University of Texas at Dallas, Jindal School of Management. He also holds a bachelor's degree in technology from Purdue University.

Gary Bartnick
Managing Director
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Gary serves as Managing Director for Duke Advisory Group and has over 35 years of sales and sales management experience in technology, with a focus on eDiscovery, Forensic Investigations, Cyber Security, Information Governance and Compliance over the last 14 years.


He began his career with Xerox where he received his initial sales training, and then went on to manage sales teams at  Digital Equipment Corporation, (now HP), Telemate Software and Cypress Communications. Gary has extensive experience working with enterprise accounts as well as managing Channel Partner sales teams.


Gary has a Batchelor of Science degree in Journalism and Public Relations from Ohio University's School of Communications in Athens, Ohio.

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Chris Arellano
Managing Director eDiscovery Consulting
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Chris serves as Managing Director of eDiscovery Consulting has over 15 years of eDiscovery consulting and project management experience. Chris has worked with corporate and law firm clients to develop eDiscovery strategies from preservation through production.


Chris has extensive experience in Relativity, Reveal, Nuix and Law PreDiscovery. Chris consults with his clients on the most efficient and cost effective means to collect, process, and review leveraging the power of AI to reduce cost while accelerating the process.

Chris  spent the last 8 years working as a litigation support project manager at Thompson Knight and  Andrews Kurth, based in their Houston offices.

  • Managed a broad mix of 1M+ record matters across IP, Medical, Construction and Multi District Litigation with many different co-counsels including external reviewers in relativity.

  • Coordinated and managed many forensics collections including a 500GB ESI collection and organized the collection of paper records.

  • Worked on many Matters which were transferred from other firms to successfully managed to conclusion.

  • Managed several reviews with multiple co-counsels and each review group required different securities and permissions while working in the same database.