Derek Hahn

Practice Areas

White Collar and Regulatory Enforcement

Investigations

Anti-Corruption and FCPA

Environment and Natural Resources Litigation

Securities Fraud and Financial Investigations

Executive Practice

Career

From high stakes internal and government investigations to complex compliance matters, clients turn to Derek to effectively manage and navigate their most consequential white collar risks across the globe. Derek has successfully represented clients across various industries in a wide range of enforcement matters, with a particular emphasis on those involving corruption, financial fraud, international trade laws and regulations, and environmental compliance. He is ranked by Chambers USA for Foreign Corrupt Practices Act (FCPA) matters, which recognized him for “building a sterling practice conducting investigations and providing compliance counsel.”

Derek’s anti-corruption experience stretches across six continents and includes government and internal investigations under the FCPA and UK Bribery Act, third-party due diligence reviews and audits, compliance program development, training, and anti-corruption risk assessments. He has defended multiple FCPA investigations brought by the Department of Justice (DOJ) and the Securities and Exchange Commission (SEC), and successfully led clients through the voluntary self-reporting process to both agencies.

In addition to his anti-corruption experience, Derek has represented clients in an array of government investigations and enforcement actions alleging financial fraud, money laundering, violations of securities laws, conflicts of interest, counterfeiting, corporate governance failures, and health care fraud. Derek has also defended clients in Clean Air Act and Clean Water Act environmental enforcement matters at both the federal and state level.

Derek has been recognized by Super Lawyers as a leading white collar attorney since 2017, and was named to the Daily Journal’s “Top 40 under 40” California lawyers in 2019. He co-authored the WorldECR Global Guide on "Managing Investigations - Best practice in Government and Internal Investigations," and has authored numerous publications on investigations and compliance topics featured in the FCPA Blog, Law 360, the ABA’s Criminal Justice Section, and other outlets. Derek sits of the Steering Committee of Crowell’s White Collar & Regulatory Enforcement Group and is a member of the firm’s Investigations Practice, which collectively have received numerous accolades, including Law 360’s “White Collar Group of the Year” distinction and recognition as one of ten “FCPA Powerhouses,” as well as ranking among the Global Investigations Review “GIR 100” list of top cross-border investigations practices around the world since 2015.

In addition to his white collar practice, Derek regularly volunteers time to pro bono matters. He co-chaired a pro bono jury trial in a federal civil rights case in Los Angeles, and has brought litigation on behalf of elderly homeowners defrauded by home improvement contractors. He also assists low income individuals in obtaining free legal representation through the Archdiocesan Legal Network.

Professional Memberships

American Bar Association: Global Anti-Corruption Committee, International White Collar Committee, International Anti-Corruption Committee

Board Member, Federal Bar Association, Orange County Chapter

Past-President, National Contract Management Association, Orange County Chapter

Association of Surfing Lawyers

Publications

Did The DOJ Just Narrow The Path To Declinations? | 02.14.23

The FCPA Blog

Managing Investigations - Best practice in Government and Internal Investigations | 08.09.21

WorldECR Global Guide

Clarifications Needed After DOJ's New FCPA Policy | 03.22.19

Law360

The Evolving Landscape of Legal Privilege in Internal Investigations | 08.12.15

Criminal Justice, Vol. 30, No. 2, American Bar Association

Drawing the Battle Lines: Recent Challenges to Privilege and Lessons Learned | 03.20.15

National Institute on White Collar Crime, New Orleans, LA