Jenner & Block, Glenn Leon profile

Summary

Jenner & Block's profile of Glenn S. Leon, a partner in the firm's Investigations, Compliance, and Defense Practice in Washington, DC. The profile says Glenn served as Chief of the Fraud Section at the DOJ's Criminal Division, directing more than 150 white-collar prosecutors, and was Senior Vice President and Chief Ethics and Compliance Officer at Hewlett Packard Enterprise. It states that Glenn spearheaded the LIBOR manipulation investigation, culminating in a $325 million criminal resolution with Rabobank. A January 15, 2026 announcement says Glenn Leon has joined the firm as a partner.

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Glenn Leon

Partner

Z2xlb25AamVubmVyLmNvbQ==

Office

Washington, DC

Phone

+1 202 639 3860

Areas of Focus

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Glenn Leon

Partner

Z2xlb25AamVubmVyLmNvbQ==

Office

Washington, DC

Phone

+1 202 639 3860

Areas of Focus

Overview Areas of Focus Credentials

Glenn S. Leon is a partner in Jenner & Block's Investigations, Compliance, and Defense Practice , where he advises companies, boards, and executives facing high-stakes government investigations, complex compliance challenges, and corporate criminal exposure. He brings nearly two decades of leadership experience from both the highest ranks of the Department of Justice (DOJ) and the C-Suite of a Fortune 100 company.

Glenn served as Chief of the Fraud Section at the DOJ's Criminal Division, directing more than 150 white-collar prosecutors investigating and prosecuting the Department’s most complex white-collar and corporate criminal cases, focusing on cases of national significance that are often transnational in scope. He oversaw major healthcare fraud schemes, securities and commodities fraud, federal procurement fraud, and all Foreign Corrupt Practices Act (FCPA) investigations and prosecutions nationwide, while playing a central role in developing corporate enforcement and compliance priorities. Under his leadership, the Fraud Section achieved an appreciable increase in corporate resolutions in 2024 and tried more cases than in any prior three-year period. He restructured the section's talent development approach and significantly enhanced its use of data analytics in case generation.

Glenn's unique perspective combines government enforcement experience with corporate leadership. As Senior Vice President and Chief Ethics and Compliance Officer at Hewlett Packard Enterprise, he oversaw the company's global ethics and compliance program during significant corporate restructuring, leading a multijurisdictional team responsible for compliance strategy, risk assessment, and remediation while reporting regularly to the Audit Committee of the Board of Directors.

Earlier in his career, as Assistant Chief and Acting Deputy Chief of the DOJ's Fraud Section, Glenn led high-profile investigations of Fortune 100 corporations involving securities fraud, insider trading, money laundering, and FCPA violations. He spearheaded the LIBOR manipulation investigation, culminating in a $325 million criminal resolution with Rabobank.

As an Assistant US Attorney in Washington, DC, Glenn prosecuted federal white-collar crimes and tried approximately 25 jury trials, including securing multiple felony convictions as lead prosecutor in an eight-month RICO conspiracy trial.

Areas of Focus

Credentials

Overview

Glenn S. Leon is a partner in Jenner & Block's Investigations, Compliance, and Defense Practice , where he advises companies, boards, and executives facing high-stakes government investigations, complex compliance challenges, and corporate criminal exposure. He brings nearly two decades of leadership experience from both the highest ranks of the Department of Justice (DOJ) and the C-Suite of a Fortune 100 company.

Glenn served as Chief of the Fraud Section at the DOJ's Criminal Division, directing more than 150 white-collar prosecutors investigating and prosecuting the Department’s most complex white-collar and corporate criminal cases, focusing on cases of national significance that are often transnational in scope. He oversaw major healthcare fraud schemes, securities and commodities fraud, federal procurement fraud, and all Foreign Corrupt Practices Act (FCPA) investigations and prosecutions nationwide, while playing a central role in developing corporate enforcement and compliance priorities. Under his leadership, the Fraud Section achieved an appreciable increase in corporate resolutions in 2024 and tried more cases than in any prior three-year period. He restructured the section's talent development approach and significantly enhanced its use of data analytics in case generation.

Glenn's unique perspective combines government enforcement experience with corporate leadership. As Senior Vice President and Chief Ethics and Compliance Officer at Hewlett Packard Enterprise, he oversaw the company's global ethics and compliance program during significant corporate restructuring, leading a multijurisdictional team responsible for compliance strategy, risk assessment, and remediation while reporting regularly to the Audit Committee of the Board of Directors.

Earlier in his career, as Assistant Chief and Acting Deputy Chief of the DOJ's Fraud Section, Glenn led high-profile investigations of Fortune 100 corporations involving securities fraud, insider trading, money laundering, and FCPA violations. He spearheaded the LIBOR manipulation investigation, culminating in a $325 million criminal resolution with Rabobank.

As an Assistant US Attorney in Washington, DC, Glenn prosecuted federal white-collar crimes and tried approximately 25 jury trials, including securing multiple felony convictions as lead prosecutor in an eight-month RICO conspiracy trial.

Areas of Focus

Credentials

Admissions

- District of Columbia, 2026
- New York, 1994

Education

- New York University School of Law, JD, 1993
- Brandeis University, BA, Economics, magna cum laude , 1990

Glenn S. Leon is a partner in Jenner & Block's Investigations, Compliance, and Defense Practice , where he advises companies, boards, and executives facing high-stakes government investigations, complex compliance challenges, and corporate criminal exposure. He brings nearly two decades of leadership experience from both the highest ranks of the Department of Justice (DOJ) and the C-Suite of a Fortune 100 company.

Glenn served as Chief of the Fraud Section at the DOJ's Criminal Division, directing more than 150 white-collar prosecutors investigating and prosecuting the Department’s most complex white-collar and corporate criminal cases, focusing on cases of national significance that are often transnational in scope. He oversaw major healthcare fraud schemes, securities and commodities fraud, federal procurement fraud, and all Foreign Corrupt Practices Act (FCPA) investigations and prosecutions nationwide, while playing a central role in developing corporate enforcement and compliance priorities. Under his leadership, the Fraud Section achieved an appreciable increase in corporate resolutions in 2024 and tried more cases than in any prior three-year period. He restructured the section's talent development approach and significantly enhanced its use of data analytics in case generation.

Glenn's unique perspective combines government enforcement experience with corporate leadership. As Senior Vice President and Chief Ethics and Compliance Officer at Hewlett Packard Enterprise, he oversaw the company's global ethics and compliance program during significant corporate restructuring, leading a multijurisdictional team responsible for compliance strategy, risk assessment, and remediation while reporting regularly to the Audit Committee of the Board of Directors.

Earlier in his career, as Assistant Chief and Acting Deputy Chief of the DOJ's Fraud Section, Glenn led high-profile investigations of Fortune 100 corporations involving securities fraud, insider trading, money laundering, and FCPA violations. He spearheaded the LIBOR manipulation investigation, culminating in a $325 million criminal resolution with Rabobank.

As an Assistant US Attorney in Washington, DC, Glenn prosecuted federal white-collar crimes and tried approximately 25 jury trials, including securing multiple felony convictions as lead prosecutor in an eight-month RICO conspiracy trial.

Areas of Focus

Credentials

Overview

Glenn S. Leon is a partner in Jenner & Block's Investigations, Compliance, and Defense Practice , where he advises companies, boards, and executives facing high-stakes government investigations, complex compliance challenges, and corporate criminal exposure. He brings nearly two decades of leadership experience from both the highest ranks of the Department of Justice (DOJ) and the C-Suite of a Fortune 100 company.

Glenn served as Chief of the Fraud Section at the DOJ's Criminal Division, directing more than 150 white-collar prosecutors investigating and prosecuting the Department’s most complex white-collar and corporate criminal cases, focusing on cases of national significance that are often transnational in scope. He oversaw major healthcare fraud schemes, securities and commodities fraud, federal procurement fraud, and all Foreign Corrupt Practices Act (FCPA) investigations and prosecutions nationwide, while playing a central role in developing corporate enforcement and compliance priorities. Under his leadership, the Fraud Section achieved an appreciable increase in corporate resolutions in 2024 and tried more cases than in any prior three-year period. He restructured the section's talent development approach and significantly enhanced its use of data analytics in case generation.

Glenn's unique perspective combines government enforcement experience with corporate leadership. As Senior Vice President and Chief Ethics and Compliance Officer at Hewlett Packard Enterprise, he oversaw the company's global ethics and compliance program during significant corporate restructuring, leading a multijurisdictional team responsible for compliance strategy, risk assessment, and remediation while reporting regularly to the Audit Committee of the Board of Directors.

Earlier in his career, as Assistant Chief and Acting Deputy Chief of the DOJ's Fraud Section, Glenn led high-profile investigations of Fortune 100 corporations involving securities fraud, insider trading, money laundering, and FCPA violations. He spearheaded the LIBOR manipulation investigation, culminating in a $325 million criminal resolution with Rabobank.

As an Assistant US Attorney in Washington, DC, Glenn prosecuted federal white-collar crimes and tried approximately 25 jury trials, including securing multiple felony convictions as lead prosecutor in an eight-month RICO conspiracy trial.

Areas of Focus

Credentials

Admissions

- District of Columbia, 2026
- New York, 1994

Education

- New York University School of Law, JD, 1993
- Brandeis University, BA, Economics, magna cum laude , 1990

News and Insights

Client Alerts

DOJ Establishes the National Fraud Enforcement Division

I. Overview

April 15, 2026

Client Alerts

DOJ Issues First-Ever Department-Wide Corporate Enforcement Policy, Superseding Component-Specific Programs

On March 10, 2026, the Department of Justice (DOJ) announced its first-ever Department-wide Corporate Enforcement and Voluntary Self-Disclosure Policy (CEP) for criminal matters, superseding all component-specific and US Attorney’s Office-specific corporate enforcement policies currently in effect. The new policy extends the framework the Criminal Division previously introduced in May 2025 to all DOJ components that handle corporate criminal matters, with the exception of antitrust violations un

March 16, 2026

Client Alerts

DOJ Fraud Section 2025 Year-in-Review: Expanded Enforcement Signals Increased Corporate Risk

The Department of Justice (DOJ) Fraud Section released its 2025 Year-in-Review (YIR) last week, revealing an expanded enforcement blueprint that suggests heightened regulatory risk and more aggressive corporate enforcement ahead. In light of these changes, companies – especially those in the Section’s identified priorities for enforcement – should prepare for increased parallel enforcement and criminal liability by proactively strengthening their compliance programs to identify and address issue

January 29, 2026

News

Glenn Leon, Former DOJ Fraud Section Chief and Hewlett Packard Enterprise Chief Compliance Officer, Joins Jenner & Block in Washington, DC

WASHINGTON, DC – January 15, 2026: Jenner & Block is pleased to announce that Glenn Leon has joined as a partner in its Washington, DC, office, where he will play a key role in the Investigations, Compliance, and Defense Practice.

January 15, 2026

View All News and Insights

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