INDIVIDUAL PROFILE

Greg Hallahan

Litigation Support 2026

 Secretariat

Ranked in 1 practice area

Business Intelligence & Investigations

Asia-Pacific Region

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Chambers Review

Provided by Chambers

Professional Advisers: Litigation Support

Business Intelligence & Investigations - Asia-Pacific Region

Band 1
Individual Editorial

Greg Hallahan is a managing director at Secretariat. Hallahan is experienced in leading an array of business intelligence and corporate investigations across the Asia-Pacific region.

Strengths

Greg is one of the best options in the market for complex investigatory work.

Greg Hallahan is thoughtful, responsive, and very good to work with. He is collaborative and dependable throughout the engagement.

Greg leads a great team with depth of expertise in the Hong Kong market.

Greg is always responsive and consistently demonstrates a high level of professionalism in his interactions. He promptly addresses client inquiries, provides clear and thoughtful guidance, and ensures that any concerns are resolved efficiently.

Greg distinguishes himself through his ability to combine investigative discipline with strategic judgement. He is highly structured in his thinking, able to distil complex, multi-jurisdictional issues into clear and actionable insights, and maintains a strong grasp of how investigative outputs must align with litigation and commercial strategy.

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Ranked Individuals at Secretariat (1)

Asia-Pacific Region

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