Founder

Adrian Sierra is the Founder and Chief Executive Officer of Sierra Forensic Group (SFG), an international forensic accounting, corporate investigations, and compliance advisory firm serving clients across the United States, Canada, Latin America, Europe, and Asia. With more than 20 years of experience, Adrian advises Fortune 100 and Fortune 500 companies, multinational corporations, law firms, insurers, financial institutions, and government entities on complex matters involving forensic accounting, forensic technology, financial fraud, taxation, regulatory compliance, anti-corruption, Foreign Corrupt Practices Act (FCPA) investigations, SEC and 10A investigations, litigation support, and expert witness services.

Before founding Sierra Forensic Group in 2009, Adrian served as a Forensic Services Manager at PricewaterhouseCoopers (PwC), where he led cross-border forensic accounting engagements, fraud investigations, FCPA due diligence, anti-bribery and corruption investigations, and regulatory compliance projects throughout the United States, Latin America, Europe, and Asia. His experience includes advising organizations on fraud risk management, corporate compliance programs, internal investigations, forensic technology, forensic data analysis, financial misconduct, governance strategies, and cross-border regulatory matters.

Under Adrian’s leadership, Sierra Forensic Group has become a trusted advisor to multinational organizations facing high-stakes financial disputes, internal investigations, regulatory inquiries, asset misappropriation, vendor fraud, accounting irregularities, and complex cross-border investigations. His work combines technical expertise in forensic accounting with strategic business insight, helping organizations mitigate financial, operational, and reputational risk while strengthening compliance and corporate governance frameworks.

Adrian is also an internationally recognized speaker, author, educator, and thought leader in forensic accounting, corporate compliance, fraud prevention, anti-corruption, and artificial intelligence in compliance. He frequently speaks on topics including anti-corruption investigations, comparative accounting, fraud awareness, artificial intelligence, compliance, and interviewing techniques for leading universities, government institutions, and professional organizations. He has contributed to leading industry publications, served in executive leadership roles within national professional organizations, and lectures regularly on emerging issues in financial investigations, ethics, and regulatory compliance.