Michael A. Ammirabile
Michael A. Ammirabile is a senior managing director at Guidepost Solutions. He brings more than 25 years of experience in auditing, accounting, and advisory services. His practice focuses on providing litigation support and forensic investigation services to a diverse clientele across the real estate, financial services, software, healthcare, and manufacturing sectors.
Todd Zimmerman
With over 25 years of distinguished service with the U.S. Department of Justice, Drug Enforcement Administration (DEA), Todd Zimmerman is one of the nation’s foremost experts in risk management, corporate security, and transnational criminal investigations. He is known for mitigating global threats and delivering results in the most complex and sensitive environments.
Liam Ferguson
Liam A. Ferguson is a nationally recognized expert in the areas of electronic discovery and structured data, including the acquisition, management and analysis of transactional, financial and operational data. With more than 25 years of experience, Mr. Ferguson has provided clients with proven solutions with respect to risk and compliance program consulting, information governance, complex data analytics and electronic discovery service offerings.
Mangai Thiagarajan
Patricia Mullin
Patricia Mullin joins Guidepost’s Immigration and Border Services practice in the role of managing director as a career investigator with more than 30 years of expertise.
William Riley
Bill Riley is president of the Compliance practice which includes the Financial Institutions and Immigration and Border Services consulting. He is also the co-head of the Washington, DC office of Guidepost Solutions.
Glenn Rosen
Glenn A. Rosen is a Director for the Forensic Accounting team based in the New York office. Prior to joining Guidepost, Mr. Rosen was a sole practitioner providing anti-money laundering services where he reviewed financial transactions, presented on investigative findings, and prepared Suspicious Activity Reports.
Caben Chester
Caben Chester serves as vice president of Protective Services at Guidepost Solutions, where he is responsible for security, risk management, intelligence, and protective service initiatives.
Timothy Sutton
Tim Sutton has nearly 40 years of security experience. His expertise includes operational security management and program development, loss prevention, physical security and risk assessments, and technical security systems design and implementation.
Sunny Lee
Sunny Lee is a member of the Immigration and Border Services, Institutional Integrity, Faith-Based Solutions, and Investigations practices. Ms. Lee has over 20 years of experience working within practice areas including corporate immigration, visa consulting, I-9 compliance, workplace investigations, organizational assessments, investigations of faith-based organizations, federal financial systems analysis, international and domestic adoptions, social services and post adoption services, and internal audits of non-profit agencies. She is licensed to practice law in the state of Maryland and has training in trauma-informed practices.