StoneTurn was once again named to the Global Investigations Review (GIR) 100 – Consultancies, the annual guide to the world’s leading investigations practices. This year, StoneTurn was also short-listed for the 2025 Investigations Consultancy of the Year—an award the firm won in 2021.
The GIR 100 is based on extensive research and features the best consultancies from around the world for sophisticated cross-border government-led and internal investigations. The research team considers the significance and complexity of recent work, team composition, jurisdictional importance and market reputation.
GIR noted “StoneTurn’s growth in both scale and geographic reach reflects an increasingly global client base seeking agile, multidisciplinary expertise to manage investigations and regulatory risks in complex jurisdictions.” StoneTurn was also recognized for “its depth in compliance monitoring and remediation” as well as expertise in “business intelligence, asset tracing and recovery, forensic accounting, data science, cybersecurity, and sector-specific advisory work across energy, construction, real estate and financial services.”
In interviews with GIR, clients cited several testimonials about the StoneTurn team’s work:
- “StoneTurn has been working with me in my role as independent compliance monitor for a Middle Eastern airline, providing extensive data analytics to review all proposed passengers for potential links to Iranian militia groups. Their work is vital to the safe operation of the airline. StoneTurn has been a fantastic partner, proposing creative solutions to difficult problems, delivering on tight deadlines and producing digestible work that highlights key facts. They’ve also been highly cooperative with the full range of service providers involved in the monitorship. Project manager Piers De Wilde has been a superstar, and I’d work with him again on any project. Sarah Keeling has a real talent for presenting complex information clearly, and Alexander Greenall is a rising star who always seems to have an answer.”
- “StoneTurn has supported investigations into allegations of misrepresentation, fraud and corruption involving a service provider, as well as procurement irregularities within the organisation. These investigations are crucial not only for detecting fraud but also for reinforcing our zero-tolerance stance. StoneTurn is one of six forensic investigators on our panel, and their work stands out for the clarity of their findings, conclusions and recommendations. Phathu Makhadi has been particularly impressive, remaining available to assist even while on maternity leave.”
- “StoneTurn has supported us on forensic accounting, reputational due diligence, and forensic support for transactional due diligence. These are important and time-sensitive engagements for major global private equity sponsors. They are responsive, conflict-free and nimble enough to quickly scope projects that make sense for timing and budget. Greg Buchanan is our go-to for his responsiveness and willingness to tailor the scope to fit the project.”
- “We’ve worked with StoneTurn on a range of pre-dispute investigations for multiple clients, including a Fortune 100 global financial services company, a leading academic medical center, a large consumer brand, and a significant healthcare acquisition. The team is remarkably talented and focused: each member is an expert in their specialty, understands client needs, and works within the legal frameworks we operate in. StoneTurn is practical and efficient in supporting our clients’ most sophisticated investigation needs. Highly notable practitioners include Eric Hines in Boston for forensic accounting and damages, Luke Tenery in Chicago for cyber and Sean Tuttle in Boston for forensic data lead.”
Read StoneTurn’s GIR 100 profile here. Learn more about StoneTurn’s Investigations and Intelligence services.
Meet Piers
Piers de Wilde
Piers de Wilde, a Partner at StoneTurn, has more than 18 years of experience in business intelligence, investigations and litigation support. Specifically, he focuses on pre-transactional due diligence, litigation support, […]
Meet Sarah
Sarah Keeling
Sarah Keeling, Partner, is a former senior British government official with more than three decades of experience in national security and geopolitical risk issues globally. She assists the Boards of […]
Meet Alexander
Alexander Greenall
Alexander Greenall specializes in due diligence, third party integrity and vendor screening services, as well as litigation support. He has spent the last decade leading and managing investigations for a […]
Meet Phathu
Phathu Makhadi
Phathu Makhadi, a Managing Director with StoneTurn, brings more than 16 years of auditing, forensic investigation and forensic accounting experience in both the private and public sectors. She is a […]
Meet Greg
Greg Buchanan
Greg Buchanan, a Partner with StoneTurn, brings almost 25 years of combined experience in forensic accounting, risk management, litigation consulting and auditing. He has extensive experience working on complex corporate […]
Meet Eric
Eric Hines
Eric Hines, a Partner with StoneTurn, brings over two decades of experience in forensic accounting, controls & compliance, and dispute consulting engagements. He serves as a consultant to attorneys and […]
Meet Luke
Luke Tenery
Luke Tenery brings over 20 years of experience helping leading organizations mitigate complex cybersecurity, data privacy, and digital risks. He applies expertise in cyber investigations, threat intelligence, incident response, and […]
Meet Sean
Sean Tuttle
Sean Tuttle, a Partner with StoneTurn, leads StoneTurn’s Forensic Technology practice and brings over 20 years of experience in managing investigations and litigation matters involving technology as a principal component. […]