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Government Investigations

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  • Trusted Advisors to Boards and Committees

    Wilson Sonsini's team is called upon by boards, senior management, special committees, and in-house counsel to lead investigations of any size and scope from start to finish, ranging from short-term fact-finding inquiries to long-term, comprehensive probes involving highly sensitive issues.

  • Investigations Experience in Key Industries

    Wilson Sonsini has undertaken investigations matters for clients in industries such as the computer hardware, software, life sciences, healthcare, energy, social media, and pharmaceutical sectors.

  • Agency and Regulatory Experience

    Wilson Sonsini's team is anchored by senior practitioners who have held significant roles in U.S. Attorneys' offices, the SEC, the DOJ, the NSD, and other prosecutorial or regulatory enforcement posts, as well as current and former senior officials at major regulatory and judiciary bodies in the areas of governance, securities laws, stock exchange rules, compliance, and corporate best practices.

Practice Dimension and Scope

Wilson Sonsini has an experienced team of attorneys who have represented companies and individuals in conjunction with government investigations. Our attorneys have assisted clients facing all types of inquiries. For example, we have represented clients in smaller, informal government inquiries, advising on initial fact-finding efforts, including responding to letters of inquiry or subpoenas. We have also represented clients in large-scale, formal investigations, including parallel criminal and civil proceedings involving potentially significant financial penalties or other severe consequences.

We have frequently been retained to assist in government investigations at the request of in-house counsel, senior management, boards, audit committees, and existing outside counsel. Our government investigations clients have included mid-size to global companies, many of which are in highly competitive industries, including the technology, financial, pharmaceutical, energy, consumer, food, and retail sectors.

We routinely represent clients before key federal enforcement agencies, including the Department of Justice (DOJ), the Securities and Exchange Commission (SEC), Federal Trade Commission (FTC), Commodity Futures Trading Commission (CFTC), Internal Revenue Service (IRS), and Financial Industry Regulatory Authority (FINRA). Our attorneys have also represented clients in conjunction with investigations led by various state attorneys general.

Recent government investigations matters have concerned allegations of fraud (including accounting, securities, tax, healthcare, immigration, and mortgage fraud); price fixing or antitrust law violations; corruption; export-control violations; insider trading; and false claims. The firm has also advised clients in government investigations prompted by whistleblowers.

Highly Relevant Subject-Matter Experience

Throughout its existence, Wilson Sonsini has had a sustained, robust transactional practice. That factor, combined with the heightened level of regulatory scrutiny, has given the firm's attorneys the opportunity to amass particular expertise in the following areas:

Financial and Accounting Fraud Investigations

Wilson Sonsini's attorneys have represented companies and their officers and directors in financial and accounting fraud investigations, including inquiries related to accounting fraud allegations, restatements, financial reporting errors, disclosure issues, potential insider trading violations, and potential Foreign Corrupt Practices Act (FCPA) violations. In a majority of cases, the investigations involved the SEC and/or DOJ enforcement proceedings; however, Wilson Sonsini's attorneys have also represented clients during inquiries led by other agencies involved in ongoing oversight and enforcement efforts.

Foreign Corrupt Practices Act (FCPA)

The firm's investigations attorneys have amassed significant experience representing clients in Foreign Corrupt Practices Act (FCPA) matters. In addition to designing and implementing comprehensive compliance programs, as well as training company representatives on FCPA compliance, our attorneys conduct internal FCPA investigations and risk assessments, provide formal legal opinions, advise on possible FCPA violations, and analyze related laws in foreign jurisdictions. If required, we also represent clients in enforcement actions and litigation presenting FCPA and corruption issues. Finally, our investigations attorneys conduct FCPA and anti-corruption due diligence investigations in conjunction with mergers, acquisitions, financings, and initial public offerings.

Antitrust – Civil Enforcement Investigations (FTC and DOJ)

For a number of years, our attorneys have represented clients before the FTC and DOJ in connection with civil non-merger investigations. We represent companies' interests before the both agencies, either in connection with an investigation into their business practices or in assisting the agencies when investigating the conduct of others. For more information, please see our list of representative matters in this area.

Antitrust – Criminal Enforcement Investigations

We have successfully counseled clients on criminal antitrust issues and represented numerous companies and individuals in investigations and grand jury proceedings. Our team of antitrust and investigations practitioners have substantial experience handling international investigations and routinely represent foreign companies and executives before the DOJ and other competition bodies. For more information, please see our list of representative matters in this area.

Agency and Regulatory Experience

Government investigations can create substantial internal strife and disruption, and eventually result in significant damage to corporate reputation and revenue. The consequences of civil or criminal liability are infinitely dire, ultimately posing a threat to the very existence of the business. Only proven, experienced legal counsel will suffice for clients facing investigations. Wilson Sonsini's Government Investigations practice consists of senior-level practitioners who are subject-matter experts in highly relevant areas.

For example, Wilson Sonsini's attorneys have previously held significant roles in U.S. Attorneys' Offices, the SEC, the DOJ, the NSD, and other prosecutor or regulatory enforcement posts. Members of the team include:

  • A former federal prosecutor in the Criminal Division of the U.S. Attorney’s Office for the Eastern District of New York
  • A former assistant U.S. attorney in the Criminal Division of the U.S. Attorney’s Office for the Southern District of New York
  • A former federal criminal prosecutor for the Northern District of California
  • A former two-term member of the Advisory Committee on the Federal Rules of Criminal Procedure for the U.S. Judicial Conference, appointed by Chief Justice Roberts
  • A former enforcement attorney from the SEC’s Division of Enforcement

Wilson Sonsini's team also includes current and former senior officials at major regulatory and judiciary bodies in the areas of governance, securities laws, stock exchange rules, compliance, and corporate best practices, including:

  • A former Chancellor of the Delaware Court of Chancery
  • A former Vice Chancellor of the Delaware Court of Chancery
  • The current chair of the NYSE Commission on Corporate Governance
  • A current member of the IPO (JOBS Act) Task Force created by the U.S. Treasury Department
  • A current member of the Advisory Board of the Securities Regulation Institute
  • A member of the SEC Advisory Committee on Smaller Public Companies
  • The current co-chair of the NASDAQ Listing and Hearing Review Council
  • The current chairman of the NYSE Enforcement and Listing Standards Committee

Other attorneys on Wilson Sonsini's investigations team are closely familiar with the board and board committee composition and independence considerations often tied to government investigations.

The Advantages of Our Experience and How Results Lead to Trust

Our attorneys draw on experience gained through current and past roles to advise and represent clients effectively when investigations are initiated by enforcement agencies and a growing list of federal and state governmental regulators. Clients benefit from our attorneys' situational awareness, which is sharpened by their familiarity with prosecutorial and enforcement tactics. Further, based on their collective experience, our investigations attorneys can lead investigations of any size and scope, from short-term fact-finding inquiries to long-term comprehensive probes involving highly sensitive issues.

Regardless of size or scope, clients depend on our investigations team to assist from start to finish. In early stages, we have helped clients evaluate available strategies and, in certain cases, significantly narrowed the scope of the investigation and/or convinced the government that charges are not warranted. If investigations proceeded, our attorneys often took the lead role in negotiations with enforcement authorities. In certain investigations, we helped clients achieve complete containment, resulting in the cessation of the inquiry. In others, we secured settlements resulting in limited or no financial penalty or admissions of wrongdoing.

Wilson Sonsini's attorneys have earned the trust and confidence of clients by achieving favorable dispositions or disposals of investigations, and because our investigations attorneys remain intensely focused on achieving the best possible resolution on behalf of clients.

Overview

Practice Dimension and Scope

Wilson Sonsini has an experienced team of attorneys who have represented companies and individuals in conjunction with government investigations. Our attorneys have assisted clients facing all types of inquiries. For example, we have represented clients in smaller, informal government inquiries, advising on initial fact-finding efforts, including responding to letters of inquiry or subpoenas. We have also represented clients in large-scale, formal investigations, including parallel criminal and civil proceedings involving potentially significant financial penalties or other severe consequences.

We have frequently been retained to assist in government investigations at the request of in-house counsel, senior management, boards, audit committees, and existing outside counsel. Our government investigations clients have included mid-size to global companies, many of which are in highly competitive industries, including the technology, financial, pharmaceutical, energy, consumer, food, and retail sectors.

We routinely represent clients before key federal enforcement agencies, including the Department of Justice (DOJ), the Securities and Exchange Commission (SEC), Federal Trade Commission (FTC), Commodity Futures Trading Commission (CFTC), Internal Revenue Service (IRS), and Financial Industry Regulatory Authority (FINRA). Our attorneys have also represented clients in conjunction with investigations led by various state attorneys general.

Recent government investigations matters have concerned allegations of fraud (including accounting, securities, tax, healthcare, immigration, and mortgage fraud); price fixing or antitrust law violations; corruption; export-control violations; insider trading; and false claims. The firm has also advised clients in government investigations prompted by whistleblowers.

Highly Relevant Subject-Matter Experience

Throughout its existence, Wilson Sonsini has had a sustained, robust transactional practice. That factor, combined with the heightened level of regulatory scrutiny, has given the firm's attorneys the opportunity to amass particular expertise in the following areas:

Financial and Accounting Fraud Investigations

Wilson Sonsini's attorneys have represented companies and their officers and directors in financial and accounting fraud investigations, including inquiries related to accounting fraud allegations, restatements, financial reporting errors, disclosure issues, potential insider trading violations, and potential Foreign Corrupt Practices Act (FCPA) violations. In a majority of cases, the investigations involved the SEC and/or DOJ enforcement proceedings; however, Wilson Sonsini's attorneys have also represented clients during inquiries led by other agencies involved in ongoing oversight and enforcement efforts.

Foreign Corrupt Practices Act (FCPA)

The firm's investigations attorneys have amassed significant experience representing clients in Foreign Corrupt Practices Act (FCPA) matters. In addition to designing and implementing comprehensive compliance programs, as well as training company representatives on FCPA compliance, our attorneys conduct internal FCPA investigations and risk assessments, provide formal legal opinions, advise on possible FCPA violations, and analyze related laws in foreign jurisdictions. If required, we also represent clients in enforcement actions and litigation presenting FCPA and corruption issues. Finally, our investigations attorneys conduct FCPA and anti-corruption due diligence investigations in conjunction with mergers, acquisitions, financings, and initial public offerings.

Antitrust – Civil Enforcement Investigations (FTC and DOJ)

For a number of years, our attorneys have represented clients before the FTC and DOJ in connection with civil non-merger investigations. We represent companies' interests before the both agencies, either in connection with an investigation into their business practices or in assisting the agencies when investigating the conduct of others. For more information, please see our list of representative matters in this area.

Antitrust – Criminal Enforcement Investigations

We have successfully counseled clients on criminal antitrust issues and represented numerous companies and individuals in investigations and grand jury proceedings. Our team of antitrust and investigations practitioners have substantial experience handling international investigations and routinely represent foreign companies and executives before the DOJ and other competition bodies. For more information, please see our list of representative matters in this area.

Agency and Regulatory Experience

Government investigations can create substantial internal strife and disruption, and eventually result in significant damage to corporate reputation and revenue. The consequences of civil or criminal liability are infinitely dire, ultimately posing a threat to the very existence of the business. Only proven, experienced legal counsel will suffice for clients facing investigations. Wilson Sonsini's Government Investigations practice consists of senior-level practitioners who are subject-matter experts in highly relevant areas.

For example, Wilson Sonsini's attorneys have previously held significant roles in U.S. Attorneys' Offices, the SEC, the DOJ, the NSD, and other prosecutor or regulatory enforcement posts. Members of the team include:

  • A former federal prosecutor in the Criminal Division of the U.S. Attorney’s Office for the Eastern District of New York
  • A former assistant U.S. attorney in the Criminal Division of the U.S. Attorney’s Office for the Southern District of New York
  • A former federal criminal prosecutor for the Northern District of California
  • A former two-term member of the Advisory Committee on the Federal Rules of Criminal Procedure for the U.S. Judicial Conference, appointed by Chief Justice Roberts
  • A former enforcement attorney from the SEC’s Division of Enforcement

Wilson Sonsini's team also includes current and former senior officials at major regulatory and judiciary bodies in the areas of governance, securities laws, stock exchange rules, compliance, and corporate best practices, including:

  • A former Chancellor of the Delaware Court of Chancery
  • A former Vice Chancellor of the Delaware Court of Chancery
  • The current chair of the NYSE Commission on Corporate Governance
  • A current member of the IPO (JOBS Act) Task Force created by the U.S. Treasury Department
  • A current member of the Advisory Board of the Securities Regulation Institute
  • A member of the SEC Advisory Committee on Smaller Public Companies
  • The current co-chair of the NASDAQ Listing and Hearing Review Council
  • The current chairman of the NYSE Enforcement and Listing Standards Committee

Other attorneys on Wilson Sonsini's investigations team are closely familiar with the board and board committee composition and independence considerations often tied to government investigations.

The Advantages of Our Experience and How Results Lead to Trust

Our attorneys draw on experience gained through current and past roles to advise and represent clients effectively when investigations are initiated by enforcement agencies and a growing list of federal and state governmental regulators. Clients benefit from our attorneys' situational awareness, which is sharpened by their familiarity with prosecutorial and enforcement tactics. Further, based on their collective experience, our investigations attorneys can lead investigations of any size and scope, from short-term fact-finding inquiries to long-term comprehensive probes involving highly sensitive issues.

Regardless of size or scope, clients depend on our investigations team to assist from start to finish. In early stages, we have helped clients evaluate available strategies and, in certain cases, significantly narrowed the scope of the investigation and/or convinced the government that charges are not warranted. If investigations proceeded, our attorneys often took the lead role in negotiations with enforcement authorities. In certain investigations, we helped clients achieve complete containment, resulting in the cessation of the inquiry. In others, we secured settlements resulting in limited or no financial penalty or admissions of wrongdoing.

Wilson Sonsini's attorneys have earned the trust and confidence of clients by achieving favorable dispositions or disposals of investigations, and because our investigations attorneys remain intensely focused on achieving the best possible resolution on behalf of clients.

Newsletters
European Antitrust Bimonthly Bulletin - March/April 2026
The firm is pleased to distribute the European Antitrust Bimonthly Bulletin, which breaks down the major antitrust developments in Europe in the past two months into concise and actionable takeaways.
Alerts
Takeaways from the Maduro Raid Prediction Market Indictment
On April 23, 2026, the Commodity Futures Trading Commission (CFTC) and the U.S. Attorney’s Office for the Southern District of New York (SDNY) brought parallel civil and criminal charges against U.S. Army Master Sergeant Gannon Ken Van Dyke related to insider trading in connection with event contracts used in prediction markets. The civil complaint marks the first-ever insider trading case brought by the CFTC involving event contracts in prediction markets.
Alerts
DOJ Expands Corporate Enforcement Policy Department-Wide for Consistent Corporate Crime Compliance
The U.S. Department of Justice (DOJ) has taken another step toward standardizing corporate crime enforcement by adopting a department-wide Corporate Enforcement Policy (DOJ CEP). This client alert summarizes the new DOJ CEP and analyzes how companies can expect corporate criminal resolutions to proceed under this new unified policy.
Alerts
DOJ Indicts Former Senior Manager of Federal Contractor over Alleged Misrepresentations Concerning FedRAMP/DoD Cybersecurity Compliance
On December 10, 2025, the U.S. Department of Justice (DOJ) announced that Danielle Hillmer, a former senior manager at a government contractor, was indicted for falsely claiming that her employer had implemented required security controls and obstructing an audit by concealing deficiencies in the system. Hillmer’s employer was a Virginia-based government contractor that provided cloud computing services to federal agencies, including the U.S. Department of the Army, the U.S. Department of Veterans Affairs, and the U.S. Department of State.
News Articles
Wilson Sonsini Recognized Among Leading Law Firms in 2025 GIR 100
Wilson Sonsini Goodrich & Rosati has been named among the leading global law firms in Global Investigations Review’s 2025 GIR 100 guide, profiling the best firms for companies and executives to call on during high-stakes corporate investigations. GIR’s research and editorial teams selected the top 100 firms handling multilayered and intricate investigations based on rigorous market research, data, submissions, and insights. The result is an in-depth survey of the best-performing investigations practices, specialist white-collar defense firms, and consulting businesses in the world.
Press Releases
Thirteen Wilson Sonsini Attorneys Appointed to American Bar Association Antitrust Leadership Roles
Palo Alto, CA (August 13, 2025) — Wilson Sonsini Goodrich & Rosati, the premier provider of legal services to technology, life sciences, and growth enterprises worldwide, is proud to announce that 12 of its attorneys have been appointed to leadership roles within the American Bar Association (ABA) for the 2025–2026 term. Of these, 11 will serve in the ABA’s Antitrust Law Section—the world’s foremost community of competition and consumer protection professionals, with more than 7,000 members globally. Additionally, one attorney has been named to the ABA’s Business Law Section, one of the organization’s largest sections focused on business, corporate, and commercial law matters.
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Insights
Newsletters
European Antitrust Bimonthly Bulletin - March/April 2026
The firm is pleased to distribute the European Antitrust Bimonthly Bulletin, which breaks down the major antitrust developments in Europe in the past two months into concise and actionable takeaways.
Alerts
Takeaways from the Maduro Raid Prediction Market Indictment
On April 23, 2026, the Commodity Futures Trading Commission (CFTC) and the U.S. Attorney’s Office for the Southern District of New York (SDNY) brought parallel civil and criminal charges against U.S. Army Master Sergeant Gannon Ken Van Dyke related to insider trading in connection with event contracts used in prediction markets. The civil complaint marks the first-ever insider trading case brought by the CFTC involving event contracts in prediction markets.
Alerts
DOJ Expands Corporate Enforcement Policy Department-Wide for Consistent Corporate Crime Compliance
The U.S. Department of Justice (DOJ) has taken another step toward standardizing corporate crime enforcement by adopting a department-wide Corporate Enforcement Policy (DOJ CEP). This client alert summarizes the new DOJ CEP and analyzes how companies can expect corporate criminal resolutions to proceed under this new unified policy.
Alerts
DOJ Indicts Former Senior Manager of Federal Contractor over Alleged Misrepresentations Concerning FedRAMP/DoD Cybersecurity Compliance
On December 10, 2025, the U.S. Department of Justice (DOJ) announced that Danielle Hillmer, a former senior manager at a government contractor, was indicted for falsely claiming that her employer had implemented required security controls and obstructing an audit by concealing deficiencies in the system. Hillmer’s employer was a Virginia-based government contractor that provided cloud computing services to federal agencies, including the U.S. Department of the Army, the U.S. Department of Veterans Affairs, and the U.S. Department of State.
News Articles
Wilson Sonsini Recognized Among Leading Law Firms in 2025 GIR 100
Wilson Sonsini Goodrich & Rosati has been named among the leading global law firms in Global Investigations Review’s 2025 GIR 100 guide, profiling the best firms for companies and executives to call on during high-stakes corporate investigations. GIR’s research and editorial teams selected the top 100 firms handling multilayered and intricate investigations based on rigorous market research, data, submissions, and insights. The result is an in-depth survey of the best-performing investigations practices, specialist white-collar defense firms, and consulting businesses in the world.
Press Releases
Thirteen Wilson Sonsini Attorneys Appointed to American Bar Association Antitrust Leadership Roles
Palo Alto, CA (August 13, 2025) — Wilson Sonsini Goodrich & Rosati, the premier provider of legal services to technology, life sciences, and growth enterprises worldwide, is proud to announce that 12 of its attorneys have been appointed to leadership roles within the American Bar Association (ABA) for the 2025–2026 term. Of these, 11 will serve in the ABA’s Antitrust Law Section—the world’s foremost community of competition and consumer protection professionals, with more than 7,000 members globally. Additionally, one attorney has been named to the ABA’s Business Law Section, one of the organization’s largest sections focused on business, corporate, and commercial law matters.
View All
WSGR Events
Internal Investigations: Advanced Issues for In-House Counsel — Privilege, Process, and Judgment at the Margins
In today’s heightened regulatory environment, internal investigations are no longer just reactive exercises—they are critical strategic tools that demand careful judgment, rigorous process, and vigilant privilege protection. Join Wilson Sonsini in Salt Lake City on Tuesday, June 23, for a lunchtime CLE program designed for in-house counsel navigating the most demanding investigation scenarios. 
WSGR Events
State Attorneys General Series: Current Litigation and Enforcement Risks
Wilson Sonsini's State Attorneys General (AG) webinar series offers a unique opportunity to hear directly from current and former state AG leaders who have led high-profile investigations and state enforcement challenges, and gain insights that can help you safeguard your company's reputation and navigate regulatory scrutiny.
Affiliated Programs
Securities Enforcement Forum West 2026
Wilson Sonsini is proud to sponsor Securities Enforcement Forum West on May 21, 2026, at the Palace Hotel in San Francisco, with an option for attendees to view the event live online. This one-day conference brings together hundreds of current and former senior SEC officials, securities enforcement and white-collar attorneys, in-house counsel, compliance executives, and other top professionals in the field to discuss the most pressing topics in securities enforcement. Key discussion points will include financial and accounting fraud, the impact of artificial intelligence (AI), advanced litigation and investigation strategies, managing SEC-related criminal matters, cryptocurrency, whistleblowers, insider trading, cybersecurity, and much more.
Speaking Engagements
ABA's International Law Section's 2026 Annual Conference
Wilson Sonsini litigation partner Tarek J. Helou will speak at the American Bar Association International Law Section’s 2026 Annual Conference, on May 12–14 in Washington, D.C. This conference brings together 600+ lawyers from five continents for high-level programs on cross-border legal and business developments, with a particular focus on enforcement, compliance, and the rule of law.
Affiliated Programs
PLI’s Foreign Corrupt Practices Act and International Anti-Corruption Developments 2025
Wilson Sonsini Litigation partner Tarek Helou will serve on a panel titled “President Trump’s Executive Order on the FCPA, the Attorney General’s February 5th Memo, and What May Happen Next” at PLI’s The Foreign Corrupt Practices Act and International Anti-Corruption Developments 2025 program. The session, taking place at 9:15 a.m. EST on Wednesday, April 9, will cover:
Speaking Engagements
ACI’s Complimentary Webinar - Life Sciences in China Series
The American Conference Institute hosted a complimentary webinar titled “Pharma, Medical Device and Biotech Companies Discuss New Compliance Risks Amid Geopolitical Tensions” as part of its Life Sciences in China Series on Wednesday, March 19. The webinar addressed the new risk and compliance dilemmas confronting life sciences companies operating in China. The speakers, including Wilson Sonsini Litigation partner Tarek Helou, delved into the industry-specific issues at the forefront, the Trump administration’s priorities, and the next phase of legal and regulatory complexities and how to prepare. 
View All
Events
WSGR Events
Internal Investigations: Advanced Issues for In-House Counsel — Privilege, Process, and Judgment at the Margins
In today’s heightened regulatory environment, internal investigations are no longer just reactive exercises—they are critical strategic tools that demand careful judgment, rigorous process, and vigilant privilege protection. Join Wilson Sonsini in Salt Lake City on Tuesday, June 23, for a lunchtime CLE program designed for in-house counsel navigating the most demanding investigation scenarios. 
WSGR Events
State Attorneys General Series: Current Litigation and Enforcement Risks
Wilson Sonsini's State Attorneys General (AG) webinar series offers a unique opportunity to hear directly from current and former state AG leaders who have led high-profile investigations and state enforcement challenges, and gain insights that can help you safeguard your company's reputation and navigate regulatory scrutiny.
Affiliated Programs
Securities Enforcement Forum West 2026
Wilson Sonsini is proud to sponsor Securities Enforcement Forum West on May 21, 2026, at the Palace Hotel in San Francisco, with an option for attendees to view the event live online. This one-day conference brings together hundreds of current and former senior SEC officials, securities enforcement and white-collar attorneys, in-house counsel, compliance executives, and other top professionals in the field to discuss the most pressing topics in securities enforcement. Key discussion points will include financial and accounting fraud, the impact of artificial intelligence (AI), advanced litigation and investigation strategies, managing SEC-related criminal matters, cryptocurrency, whistleblowers, insider trading, cybersecurity, and much more.
Speaking Engagements
ABA's International Law Section's 2026 Annual Conference
Wilson Sonsini litigation partner Tarek J. Helou will speak at the American Bar Association International Law Section’s 2026 Annual Conference, on May 12–14 in Washington, D.C. This conference brings together 600+ lawyers from five continents for high-level programs on cross-border legal and business developments, with a particular focus on enforcement, compliance, and the rule of law.
Affiliated Programs
PLI’s Foreign Corrupt Practices Act and International Anti-Corruption Developments 2025
Wilson Sonsini Litigation partner Tarek Helou will serve on a panel titled “President Trump’s Executive Order on the FCPA, the Attorney General’s February 5th Memo, and What May Happen Next” at PLI’s The Foreign Corrupt Practices Act and International Anti-Corruption Developments 2025 program. The session, taking place at 9:15 a.m. EST on Wednesday, April 9, will cover:
Speaking Engagements
ACI’s Complimentary Webinar - Life Sciences in China Series
The American Conference Institute hosted a complimentary webinar titled “Pharma, Medical Device and Biotech Companies Discuss New Compliance Risks Amid Geopolitical Tensions” as part of its Life Sciences in China Series on Wednesday, March 19. The webinar addressed the new risk and compliance dilemmas confronting life sciences companies operating in China. The speakers, including Wilson Sonsini Litigation partner Tarek Helou, delved into the industry-specific issues at the forefront, the Trump administration’s priorities, and the next phase of legal and regulatory complexities and how to prepare. 
View All
Demian Ahn
Partner
Washington, D.C.
Demian Ahn is a member of the firm’s data, privacy, and cybersecurity practice based in Washington, D.C. He leads the firm’s incident response practice and advises companies on compliance, regulatory, and crisis management matters relating to emerging technologies of all kinds.
  • Data, Privacy, and Cybersecurity
View Profile
Josephine Aiello LeBeau
Partner
Washington, D.C.
Josephine focuses on matters related to compliance and enforcement of U.S. export control and sanctions.
  • National Security and Trade
View Profile
David J. Berger
Partner
Palo Alto
David is an expert in and leader of the corporate governance and shareholder activism practices.
  • Litigation
View Profile
Michael S. Casey
Partner
London
Mike Casey is a dual-qualified, Chambers-ranked (Band 1) partner in Wilson Sonsini Goodrich & Rosati’s London office. His practice focuses on advising clients on sanctions, export controls, anti-corruption, and anti-money laundering issues in investigations, counseling, and compliance matters. In addition, he regularly acts as a specialist in mergers, acquisitions, venture financings, lending arrangements, and other types of corporate transactions. He also frequently advises clients on the UK’s National Security and Investment Act and other foreign direct investment review regimes.

Chambers UK noted that Mike is “a one-stop shop for global sanctions advice” who is “very responsive with his provision of highly commercial advice.” The publication also described Mike as “one of the most experienced practitioners in the market” who “understands and takes into consideration any necessary complexities and understands the importance of commerciality when giving recommendations.”

Mike has led numerous internal and government-initiated investigations involving potential violations of sanctions, export controls, anti-money laundering laws, anti-bribery laws, and fraud laws throughout the world. He has also represented individuals in pending and threatened litigation.

Mike regularly advises clients on a wide range of compliance issues. He works with clients to develop and implement state-of-the-art compliance programs, including corporate policies, training programs, and third-party procedures. Further, Mike assists clients with carrying out due diligence for many types of corporate transactions. He has successfully guided dozens of investors and companies through the NSI Act review process.

Prior to joining Wilson Sonsini, Mike was a partner in the London office of Kirkland & Ellis.

Mike is the author of Sanctions Enforcement and Compliance: A Practitioner’s Guide to OFAC, a treatise published by Bloomberg BNA. Additionally, leading legal publications have published more than 45 of his articles. He has been quoted in numerous publications, including The Wall Street Journal, The New York Times, and Global Investigations Review.
  • National Security and Trade
View Profile
Christopher Chiou
Partner
Los Angeles
Chris Chiou is a litigation partner in the Los Angeles office of Wilson Sonsini Goodrich & Rosati. He represents clients in high-stakes complex commercial litigation and investigations, with an emphasis on business disputes. Chris is experienced in all stages of litigation, from counseling clients before lawsuits are filed through trying cases before juries. He also leads internal investigations on behalf of corporations and advises them on compliance issues, including providing Foreign Corrupt Practices Act training to executives at multinational companies. Chris is certified by the International Association of Privacy Professionals in information privacy and data protection.

Before joining the firm, Chris served as Acting U.S. Attorney for the District of Nevada. As the district’s chief federal law enforcement officer, he oversaw criminal and civil cases brought on behalf of the United States, including financial litigation cases, and prosecuted cybercrime (particularly ransomware and business email compromise), white collar crime, and public corruption. In 2021, Chris served on a nationwide task force to determine how the U.S. Department of Justice can more effectively combat hate crimes and hate incidents.

Chris was previously a partner at Jenner & Block, where he helped start the Los Angeles office in 2009.
  • Litigation
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Jocelyn Chow
Partner
Hong Kong
Jocelyn Chow is a regulatory and compliance partner in the Hong Kong office of Wilson Sonsini Goodrich & Rosati. With a focus on antitrust, national security, and international trade matters, Jocelyn advises multinational corporations on all aspects of antitrust law, global economic and trade sanctions, export controls, import controls, rules of origin, and foreign investment controls. She works with companies operating across numerous industrial sectors, including defense, bioscience, advanced engineering and technology, aviation, telecommunications and broadcasting, and financial services.
  • Regulatory
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Ben Crosson
Partner
Palo Alto
Ben represents clients in complex litigation matters and advises them in conjunction with government and internal investigations.
  • Litigation
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Leo Cunningham
Partner
Palo Alto
Leo is a former federal prosecutor who represents clients in sensitive litigation matters, including federal and state court trials.
  • Litigation
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Moe Fodeman
Partner
New York
Moe is an experienced attorney in white collar criminal defense, U.S. SEC enforcement defense, compliance and regulatory matters, and complex civil litigation.
  • Litigation
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Joshua F. Gruenspecht
Partner
Washington, D.C.
Joshua advises domestic and foreign investors, funds, established companies and startups in regulatory, investigative, and enforcement matters.
  • National Security and Trade
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People
Demian Ahn
Partner
Washington, D.C.
Demian Ahn is a member of the firm’s data, privacy, and cybersecurity practice based in Washington, D.C. He leads the firm’s incident response practice and advises companies on compliance, regulatory, and crisis management matters relating to emerging technologies of all kinds.
  • Data, Privacy, and Cybersecurity
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Josephine Aiello LeBeau
Partner
Washington, D.C.
Josephine focuses on matters related to compliance and enforcement of U.S. export control and sanctions.
  • National Security and Trade
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David J. Berger
Partner
Palo Alto
David is an expert in and leader of the corporate governance and shareholder activism practices.
  • Litigation
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Michael S. Casey
Partner
London
Mike Casey is a dual-qualified, Chambers-ranked (Band 1) partner in Wilson Sonsini Goodrich & Rosati’s London office. His practice focuses on advising clients on sanctions, export controls, anti-corruption, and anti-money laundering issues in investigations, counseling, and compliance matters. In addition, he regularly acts as a specialist in mergers, acquisitions, venture financings, lending arrangements, and other types of corporate transactions. He also frequently advises clients on the UK’s National Security and Investment Act and other foreign direct investment review regimes.

Chambers UK noted that Mike is “a one-stop shop for global sanctions advice” who is “very responsive with his provision of highly commercial advice.” The publication also described Mike as “one of the most experienced practitioners in the market” who “understands and takes into consideration any necessary complexities and understands the importance of commerciality when giving recommendations.”

Mike has led numerous internal and government-initiated investigations involving potential violations of sanctions, export controls, anti-money laundering laws, anti-bribery laws, and fraud laws throughout the world. He has also represented individuals in pending and threatened litigation.

Mike regularly advises clients on a wide range of compliance issues. He works with clients to develop and implement state-of-the-art compliance programs, including corporate policies, training programs, and third-party procedures. Further, Mike assists clients with carrying out due diligence for many types of corporate transactions. He has successfully guided dozens of investors and companies through the NSI Act review process.

Prior to joining Wilson Sonsini, Mike was a partner in the London office of Kirkland & Ellis.

Mike is the author of Sanctions Enforcement and Compliance: A Practitioner’s Guide to OFAC, a treatise published by Bloomberg BNA. Additionally, leading legal publications have published more than 45 of his articles. He has been quoted in numerous publications, including The Wall Street Journal, The New York Times, and Global Investigations Review.
  • National Security and Trade
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Christopher Chiou
Partner
Los Angeles
Chris Chiou is a litigation partner in the Los Angeles office of Wilson Sonsini Goodrich & Rosati. He represents clients in high-stakes complex commercial litigation and investigations, with an emphasis on business disputes. Chris is experienced in all stages of litigation, from counseling clients before lawsuits are filed through trying cases before juries. He also leads internal investigations on behalf of corporations and advises them on compliance issues, including providing Foreign Corrupt Practices Act training to executives at multinational companies. Chris is certified by the International Association of Privacy Professionals in information privacy and data protection.

Before joining the firm, Chris served as Acting U.S. Attorney for the District of Nevada. As the district’s chief federal law enforcement officer, he oversaw criminal and civil cases brought on behalf of the United States, including financial litigation cases, and prosecuted cybercrime (particularly ransomware and business email compromise), white collar crime, and public corruption. In 2021, Chris served on a nationwide task force to determine how the U.S. Department of Justice can more effectively combat hate crimes and hate incidents.

Chris was previously a partner at Jenner & Block, where he helped start the Los Angeles office in 2009.
  • Litigation
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Jocelyn Chow
Partner
Hong Kong
Jocelyn Chow is a regulatory and compliance partner in the Hong Kong office of Wilson Sonsini Goodrich & Rosati. With a focus on antitrust, national security, and international trade matters, Jocelyn advises multinational corporations on all aspects of antitrust law, global economic and trade sanctions, export controls, import controls, rules of origin, and foreign investment controls. She works with companies operating across numerous industrial sectors, including defense, bioscience, advanced engineering and technology, aviation, telecommunications and broadcasting, and financial services.
  • Regulatory
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Ben Crosson
Partner
Palo Alto
Ben represents clients in complex litigation matters and advises them in conjunction with government and internal investigations.
  • Litigation
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Leo Cunningham
Partner
Palo Alto
Leo is a former federal prosecutor who represents clients in sensitive litigation matters, including federal and state court trials.
  • Litigation
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Moe Fodeman
Partner
New York
Moe is an experienced attorney in white collar criminal defense, U.S. SEC enforcement defense, compliance and regulatory matters, and complex civil litigation.
  • Litigation
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Joshua F. Gruenspecht
Partner
Washington, D.C.
Joshua advises domestic and foreign investors, funds, established companies and startups in regulatory, investigative, and enforcement matters.
  • National Security and Trade
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Related Practices
  • Regulatory
  • Board and Internal Investigations
  • Committee on Foreign Investment in the United States (CFIUS)
  • Export Control and Sanctions
  • FCPA and Anti-Corruption
  • Federal Trade Commission
  • Litigation
  • Consumer Litigation
  • Internet Strategy and Litigation
Recent Insights
Newsletters
European Antitrust Bimonthly Bulletin - March/April 2026
The firm is pleased to distribute the European Antitrust Bimonthly Bulletin, which breaks down the major antitrust developments in Europe in the past two months into concise and actionable takeaways.
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Alerts
Takeaways from the Maduro Raid Prediction Market Indictment
On April 23, 2026, the Commodity Futures Trading Commission (CFTC) and the U.S. Attorney’s Office for the Southern District of New York (SDNY) brought parallel civil and criminal charges against U.S. Army Master Sergeant Gannon Ken Van Dyke related to insider trading in connection with event contracts used in prediction markets. The civil complaint marks the first-ever insider trading case brought by the CFTC involving event contracts in prediction markets.
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Recent Events
WSGR Events
Internal Investigations: Advanced Issues for In-House Counsel — Privilege, Process, and Judgment at the Margins
In today’s heightened regulatory environment, internal investigations are no longer just reactive exercises—they are critical strategic tools that demand careful judgment, rigorous process, and vigilant privilege protection. Join Wilson Sonsini in Salt Lake City on Tuesday, June 23, for a lunchtime CLE program designed for in-house counsel navigating the most demanding investigation scenarios. 
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WSGR Events
State Attorneys General Series: Current Litigation and Enforcement Risks
Wilson Sonsini's State Attorneys General (AG) webinar series offers a unique opportunity to hear directly from current and former state AG leaders who have led high-profile investigations and state enforcement challenges, and gain insights that can help you safeguard your company's reputation and navigate regulatory scrutiny.
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