Jillian N. Katterhagen

Jillian N. Katterhagen is an associate in the Washington, D.C. office of Gibson Dunn. She practices in the firm’s Litigation Department with a particular focus on congressional investigations, white collar defense investigations, and global anti-corruption matters. Jillian represents major corporations and C-suite executives across a wide range of industries, including pharmaceutical and health insurance companies, universities, social media companies, housing companies, technology companies, and financial institutions.

Jillian has developed a deep expertise in congressional investigations, where she regularly advises companies and their senior executives on all aspects of interactions with congressional committees. Her practice in this area includes preparing CEOs and other C-suite executives to testify before Congress, managing high-stakes congressional inquiries and hearing preparation, and guiding clients through the full investigative process from initial document requests through live testimony. She has handled congressional investigations and hearing preparation for the leaders of major pharmaceutical and health insurance companies, universities, social media companies, housing companies, technology companies, and many other sectors, and has become a recognized subject matter expert in navigating complex oversight matters on Capitol Hill.

In addition to her congressional investigations practice, Jillian maintains an active white collar defense practice in which she represents companies and financial institutions subject to investigations by the U.S. Department of Justice and the Securities and Exchange Commission. She has conducted internal investigations involving alleged securities and accounting fraud, violations of the Foreign Corrupt Practices Act, violations of anti-money laundering laws, and violations of the False Claims Act. Her white collar matters encompass a broad range of regulatory enforcement actions, and she has significant experience representing multinational companies through complex cross-border regulatory inquiries.

Her representative experience includes:

• Preparing CEOs and senior executives of major pharmaceutical and health insurance companies for congressional testimony in connection with high-profile oversight investigations
• Advising CEOs and leadership teams at prominent social media and technology companies on congressional inquiries, including hearing preparation and strategic positioning
• Representing universities and housing companies in connection with congressional investigations and government oversight matters
• Defending companies and financial institutions in DOJ and SEC investigations involving allegations of money laundering and FCPA violations
• Conducting internal investigations involving alleged securities and accounting fraud, violations of anti-money laundering laws, and violations of the False Claims Act
• Counseling clients across multiple industries on regulatory inquiries, internal investigations, and government enforcement actions

Jillian received her Juris Doctor from Stanford Law School in 2018, where she served as an Editor for the Stanford Law and Policy Review and as a student attorney in Stanford's Immigrants' Rights Clinic, advocating on behalf of clients seeking legal advice in connection with asylum applications and other immigration matters. She graduated magna cum laude from Washington and Lee University, where she was elected to Phi Beta Kappa, earned a Bachelor of Arts in history and politics, and served as the captain of the women's track and field team.

Jillian is admitted to practice in the District of Columbia and Texas.

Recent Publications:

• Co-author, "The Power to Investigate – Table of Authorities of House & Senate 119th Congress," Gibson Dunn Client Alert
• Co-author, "Congressional Investigations in the 119th Congress," Gibson Dunn Client Alert
• Presenter, "Congressional Investigations in the 119th Congress: What to Expect and How to Prepare," Gibson Dunn Webcast

Capabilities

• White Collar Defense and Investigations
• Administrative Law and Regulatory Practice
• Congressional Investigations
• Consumer Protection
• FDA and Health Care
• Financial Institutions
• Higher Education
• Labor and Employment
• Litigation
• Securities Enforcement

Credentials

Education:

• Stanford University - 2018 Juris Doctor
• Washington & Lee University - 2015 Bachelor of Arts

Admissions:

• District of Columbia Bar