-
Experienced Advisor
Jeff regularly guides clients through high-stakes civil and criminal antitrust investigations both domestically and internationally, including criminal grand jury investigations, civil investigations, private litigation, and compliance counseling.
-
Antitrust Enforcer Insights
Jeff previously served as a trial attorney in the Attorney General's Honors Program with the DOJ's Antitrust Division, working in the Networks & Technology Section on civil merger and non-merger matters.
-
A Recognized Practitioner
Jeff has been recognized as a leader in antitrust by the Daily Journal, Chambers USA, and Global Competition Review/Who's Who.
Jeff VanHooreweghe is a partner at Wilson Sonsini and vice chair of the firm's Antitrust and Competition Group, where he leads high-stakes civil and criminal antitrust matters both domestically and internationally, including criminal grand jury investigations, civil investigations, private litigation, and compliance counseling. With a track record of advising Fortune 500 companies and emerging industry leaders, Jeff provides invaluable counsel on complex antitrust matters that can have significant financial and reputational impact.
Drawing on his extensive experience at the U.S. Department of Justice’s Antitrust Division, Jeff brings a wealth of knowledge to help clients navigate some of the most sensitive and challenging antitrust issues. His strategic insight has earned him a reputation for handling complex matters with precision, skill, and discretion.
Jeff is also an adjunct professor at UC Law San Francisco, where he teaches antitrust law.
Prior to joining the firm, Jeff worked as an associate at Skadden, Arps, Slate, Meagher & Flom LLP, another global law firm in Washington, D.C.
Jeff VanHooreweghe is a partner at Wilson Sonsini and vice chair of the firm's Antitrust and Competition Group, where he leads high-stakes civil and criminal antitrust matters both domestically and internationally, including criminal grand jury investigations, civil investigations, private litigation, and compliance counseling. With a track record of advising Fortune 500 companies and emerging industry leaders, Jeff provides invaluable counsel on complex antitrust matters that can have significant financial and reputational impact.
Drawing on his extensive experience at the U.S. Department of Justice’s Antitrust Division, Jeff brings a wealth of knowledge to help clients navigate some of the most sensitive and challenging antitrust issues. His strategic insight has earned him a reputation for handling complex matters with precision, skill, and discretion.
Jeff is also an adjunct professor at UC Law San Francisco, where he teaches antitrust law.
Prior to joining the firm, Jeff worked as an associate at Skadden, Arps, Slate, Meagher & Flom LLP, another global law firm in Washington, D.C.
- J.D., Catholic University of America, 2001Cum Laude; Editor-in-Chief, Catholic University Law Review
- A.B., Economics and History, Washington University in St. Louis, 1997
- Recognized in the “Antitrust: Cartel” category in the 2026 edition of Chambers Global
- Named among the Daily Journal’s 2024 Top Antitrust Lawyers
- Named to Lawdragon's 2025-2026 "500 Leading Global Antitrust & Competition Lawyers" guide
- Named among Lawdragon’s “500 Leading Litigators in America,” 2025-26
-
Recognized in the 2021-2026 editions of Chambers USA: America's Leading Lawyers for Business, where sources describe him as a “extremely diligent and responsive” and “dives deeply into the factual details of his cases and knows how to use that material to his advantage”
- Selected for inclusion in the 2025 edition of GCR/Lexology Index's Competition guide
-
Selected for inclusion in the 2017-2018, 2021, and 2023-2024 editions of GCR/Who’s Who Legal: Competition
- Named a Future Leader in the 2019 and 2020 editions of Global Competition Review/Who's Who Legal
- Bar of the District of Columbia
- State Bar of California
- State Bar of Illinois
- U.S. District Court for the Northern District of California
- J.D., Catholic University of America, 2001Cum Laude; Editor-in-Chief, Catholic University Law Review
- A.B., Economics and History, Washington University in St. Louis, 1997
- Recognized in the “Antitrust: Cartel” category in the 2026 edition of Chambers Global
- Named among the Daily Journal’s 2024 Top Antitrust Lawyers
- Named to Lawdragon's 2025-2026 "500 Leading Global Antitrust & Competition Lawyers" guide
- Named among Lawdragon’s “500 Leading Litigators in America,” 2025-26
-
Recognized in the 2021-2026 editions of Chambers USA: America's Leading Lawyers for Business, where sources describe him as a “extremely diligent and responsive” and “dives deeply into the factual details of his cases and knows how to use that material to his advantage”
- Selected for inclusion in the 2025 edition of GCR/Lexology Index's Competition guide
-
Selected for inclusion in the 2017-2018, 2021, and 2023-2024 editions of GCR/Who’s Who Legal: Competition
- Named a Future Leader in the 2019 and 2020 editions of Global Competition Review/Who's Who Legal
- Bar of the District of Columbia
- State Bar of California
- State Bar of Illinois
- U.S. District Court for the Northern District of California
Select Representations
- Represents Seagate Technology LLC in its civil lawsuit against various suppliers of hard disk drive suspension assemblies, Seagate Technology, LLC et al v. NHK Spring Co., Ltd. et al. (N.D. Cal.)
- Represents Continental Tire AG and Continental Tire the Americas in a civil lawsuit brought against it and various tire manufacturers, In re: Passenger Vehicle Replacement Tires Antitrust Litig. (N.D. Ohio)
- Represented Hitachi Chemical Co., Ltd in a criminal grand jury investigation and follow-on civil litigation, In re Capacitors Antitrust Litig. (N.D. Cal.)
- Represented a technology company as global coordinating counsel in its leniency application before competition agencies around the world.
- Represented a manufacturing entity in a criminal grand jury investigation.
- Represented Outbrain, Inc. in a criminal grand jury investigation.
- Represented a foreign exchange trader in various government agency investigations in the FOREX industry, including through the U.S. DOJ’s trial against various traders, United States v. Usher, et al. (S.D.N.Y.)
- Represented various individuals in the financial services industry in criminal antitrust and fraud investigations conducted by multiple government agencies.
- Represented various companies and individuals in the U.S. DOJ’s multi-year criminal antitrust investigations in the automotive industry (DOJ’s “auto parts” investigation).
- Represented Seagate Technology in its acquisition of Samsung Electronics’ hard disk drive business, named “Matter of the Year” at the 2012 GCR Awards.
- Represented KLM Royal Dutch Airlines in a criminal grand jury investigation and various civil litigations, including In re Air Cargo (E.D.N.Y.), In re Trans-Pacific Passenger Litig. (N.D. Cal.), McLafferty et al v. Deutsch Lufthansa, et al. (E.D. Pa.)
- Served as Trial Attorney for the United States Department of Justice in United States v. Microsoft Corporation (D.C. Cir.), United States v. Oracle Corporation (N.D. Cal.), United States v. SunGard Data Systems, et al. (D.D.C.)
Select Representations
- Represents Seagate Technology LLC in its civil lawsuit against various suppliers of hard disk drive suspension assemblies, Seagate Technology, LLC et al v. NHK Spring Co., Ltd. et al. (N.D. Cal.)
- Represents Continental Tire AG and Continental Tire the Americas in a civil lawsuit brought against it and various tire manufacturers, In re: Passenger Vehicle Replacement Tires Antitrust Litig. (N.D. Ohio)
- Represented Hitachi Chemical Co., Ltd in a criminal grand jury investigation and follow-on civil litigation, In re Capacitors Antitrust Litig. (N.D. Cal.)
- Represented a technology company as global coordinating counsel in its leniency application before competition agencies around the world.
- Represented a manufacturing entity in a criminal grand jury investigation.
- Represented Outbrain, Inc. in a criminal grand jury investigation.
- Represented a foreign exchange trader in various government agency investigations in the FOREX industry, including through the U.S. DOJ’s trial against various traders, United States v. Usher, et al. (S.D.N.Y.)
- Represented various individuals in the financial services industry in criminal antitrust and fraud investigations conducted by multiple government agencies.
- Represented various companies and individuals in the U.S. DOJ’s multi-year criminal antitrust investigations in the automotive industry (DOJ’s “auto parts” investigation).
- Represented Seagate Technology in its acquisition of Samsung Electronics’ hard disk drive business, named “Matter of the Year” at the 2012 GCR Awards.
- Represented KLM Royal Dutch Airlines in a criminal grand jury investigation and various civil litigations, including In re Air Cargo (E.D.N.Y.), In re Trans-Pacific Passenger Litig. (N.D. Cal.), McLafferty et al v. Deutsch Lufthansa, et al. (E.D. Pa.)
- Served as Trial Attorney for the United States Department of Justice in United States v. Microsoft Corporation (D.C. Cir.), United States v. Oracle Corporation (N.D. Cal.), United States v. SunGard Data Systems, et al. (D.D.C.)
Select Publications
-
Co-author, “Ninth Circuit Clarifies (Somewhat) the Antitrust Risk of Pricing Algorithms,” Wilson Sonsini Alert, August 18, 2025
-
Co-author, “Blowing the Whistle on Antitrust Crimes: DOJ’s Antitrust Division Announces First Whistleblower Rewards Program,” Wilson Sonsini Alert, August 4, 2025
- Co-author with B. Snyder, J. Kloub, and M. McDonald, “Weaponizing Antitrust: An Unsubstantiated Attack Against Climate Initiatives,” Westlaw Today, February 7, 2025
- Co-author, “FTC on the Job: Chairman Ferguson Announces Labor Task Force,” Wilson Sonsini Alert, March 3, 2025
-
Co-author, “2025 Year in Preview: Trends and Key Decisions in Global Cartel Enforcement,” Wilson Sonsini Alert, January 29, 2025
-
Co-author, “Agency Guidance for Avoiding ‘Interlocking’ Directors and Officers,” Wilson Sonsini Alert, January 21, 2025
- Co-author, “Antitrust Laws and ESG Shareholder Engagement,” Wilson Sonsini Alert, January 6, 2025
- Co-author, “Latest Ruling Relating to Pricing Software Highlights Antitrust Risks,” Wilson Sonsini Alert, December 9, 2024
- Co-author, "Federal District Court Dismisses Justice Department's Latest 'No-Poach' Case Before Jury Deliberations," Employee Relations Law Journal, Autumn 2023
- Co-author with K. Sharp, "Update on DOJ “No-Poach” and “Wage-Fixing” Criminal Antitrust Prosecutions," Wilson Sonsini Alert, December 7, 2021
- Co-author with M. Rosman, T. Ikeda, and J. Epner, "USA" chapter, Cartels 2019, Chambers and Partners
- Co-author with M. Rosman, "Type C: The Antitrust Division's Newest Leniency Program," Law360, August 8, 2017
- Co-author with M. Rosman, "U.S.A" chapter, Cartels, Fifth Edition, Global Legal Insights, 2017
- Co-author, "DOJ Announces Updates to Antitrust Leniency Program," WSGR Alert, January 19, 2017
- Co-author, "DOJ and FTC Put HR Executives on Notice That Anticompetitive Hiring and Compensation Practices May Be Subject to Criminal Prosecution," WSGR Alert, October 24, 2016
- Co-author with M. Rosman, T. Ikeda, and T. Serra, "Lightning Strikes Twice: DOJ Gives Second Compliance Credit," Law360, October 15, 2015
- Co-author with M. Rosman and D. Sokol, "One Small Provision for Barclays, One Big Step for Compliance," Law360, May 26, 2015
- Co-author with M. Rosman and C. Williams, "U.S." chapter, Cartels, Third Edition, Global Legal Insights, 2015
- Co-author with M. Rosman, "Criminal Antitrust Policy: Bigger Sticks, Smaller Carrots," Law360, September 16, 2014
- Co-author with S. Chemtob and V. Rucker, "The U.S. DOJ Secures Two Extraditions of Foreign National on Antitrust Charges: Who Is Next?" Spotlight on Antitrust: Asia Edition, June 2014
- Co-author with M. Rosman, "Considerations for Improving Antitrust Cartel Enforcement in the United States," The 10th ABA/IBA International Cartel Workshop, Rome, Italy, 2014 (based on M. Rosman's testimony before the United States Senate on November 14, 2013, at a hearing concerning U.S. cartel enforcement before the Senate Subcommittee on Antitrust, Competition Policy and Consumer Rights of the Committee on the Judiciary)
- Co-author with M. Rosman, "What Goes Up, Doesn't Come Down: The Absence of the Mitigating-Role Adjustment in Antitrust Sentencing," The Antitrust Source, August 2012
- "Who Will Control the Business Behind Business-to-Business Marketplaces?" Standards Engineering, Vol. 53, No. 2, 2001
- "Legal Services Corporation v. Velazquez: The Supreme Court's Missed Opportunity to Clarify the Viewpoint Discrimination Doctrine's Role in Subsidized Speech Cases," 50 Catholic University Law Review 539, 2001
Select Speaking Engagements
- Speaker, "Global State of Play: Antitrust and AI Series - Part 1: Algorithmic Pricing Litigation and Enforcement Update," Webinar, September 24, 2025
- Co-chair, "Cartels" session discussion, Antitrust in Asia, Cambridge Forum Conference, March 2025
- Moderator, "Are ESG and Antitrust at Odds with One Another?" Antitrust West Coast Conference, May 2024
- Presenter, “What's Next from the Biden Administration in Antitrust Enforcement? Considerations for Software Companies,” Webinar, February 9, 2022
- Panelist, "Forex Trial: Behind the Scenes with the Trial Attorneys," ABA Section of Antitrust Law, Cartel and Criminal Practice, Washington, D.C., January 22, 2019
- Panelist, "10th Anniversary of the AML: Trends, Challenges and Successes," UNCTAD and CUPL Conference, Beijing, China, November 2017
- Moderator, "Hiring, Salaries, and Antitrust: All You Need to Know about DOJ's Guidelines for HR Professionals," American Bar Association, December 16, 2016
- Co-presenter, "Extraterritorial Reach of the U.S. Antitrust Laws under the Foreign Trade Antitrust Improvements Act (FTAIA): New Court Decisions – On-Demand", Clear Law Institute Webinar, September 29, 2015
- Panelist, The Knowledge Group Webinar Legal Series, "U.S. Antitrust Laws - Developments in Extra-territorial Reach," January 30, 2015
Select Publications
-
Co-author, “Ninth Circuit Clarifies (Somewhat) the Antitrust Risk of Pricing Algorithms,” Wilson Sonsini Alert, August 18, 2025
-
Co-author, “Blowing the Whistle on Antitrust Crimes: DOJ’s Antitrust Division Announces First Whistleblower Rewards Program,” Wilson Sonsini Alert, August 4, 2025
- Co-author with B. Snyder, J. Kloub, and M. McDonald, “Weaponizing Antitrust: An Unsubstantiated Attack Against Climate Initiatives,” Westlaw Today, February 7, 2025
- Co-author, “FTC on the Job: Chairman Ferguson Announces Labor Task Force,” Wilson Sonsini Alert, March 3, 2025
-
Co-author, “2025 Year in Preview: Trends and Key Decisions in Global Cartel Enforcement,” Wilson Sonsini Alert, January 29, 2025
-
Co-author, “Agency Guidance for Avoiding ‘Interlocking’ Directors and Officers,” Wilson Sonsini Alert, January 21, 2025
- Co-author, “Antitrust Laws and ESG Shareholder Engagement,” Wilson Sonsini Alert, January 6, 2025
- Co-author, “Latest Ruling Relating to Pricing Software Highlights Antitrust Risks,” Wilson Sonsini Alert, December 9, 2024
- Co-author, "Federal District Court Dismisses Justice Department's Latest 'No-Poach' Case Before Jury Deliberations," Employee Relations Law Journal, Autumn 2023
- Co-author with K. Sharp, "Update on DOJ “No-Poach” and “Wage-Fixing” Criminal Antitrust Prosecutions," Wilson Sonsini Alert, December 7, 2021
- Co-author with M. Rosman, T. Ikeda, and J. Epner, "USA" chapter, Cartels 2019, Chambers and Partners
- Co-author with M. Rosman, "Type C: The Antitrust Division's Newest Leniency Program," Law360, August 8, 2017
- Co-author with M. Rosman, "U.S.A" chapter, Cartels, Fifth Edition, Global Legal Insights, 2017
- Co-author, "DOJ Announces Updates to Antitrust Leniency Program," WSGR Alert, January 19, 2017
- Co-author, "DOJ and FTC Put HR Executives on Notice That Anticompetitive Hiring and Compensation Practices May Be Subject to Criminal Prosecution," WSGR Alert, October 24, 2016
- Co-author with M. Rosman, T. Ikeda, and T. Serra, "Lightning Strikes Twice: DOJ Gives Second Compliance Credit," Law360, October 15, 2015
- Co-author with M. Rosman and D. Sokol, "One Small Provision for Barclays, One Big Step for Compliance," Law360, May 26, 2015
- Co-author with M. Rosman and C. Williams, "U.S." chapter, Cartels, Third Edition, Global Legal Insights, 2015
- Co-author with M. Rosman, "Criminal Antitrust Policy: Bigger Sticks, Smaller Carrots," Law360, September 16, 2014
- Co-author with S. Chemtob and V. Rucker, "The U.S. DOJ Secures Two Extraditions of Foreign National on Antitrust Charges: Who Is Next?" Spotlight on Antitrust: Asia Edition, June 2014
- Co-author with M. Rosman, "Considerations for Improving Antitrust Cartel Enforcement in the United States," The 10th ABA/IBA International Cartel Workshop, Rome, Italy, 2014 (based on M. Rosman's testimony before the United States Senate on November 14, 2013, at a hearing concerning U.S. cartel enforcement before the Senate Subcommittee on Antitrust, Competition Policy and Consumer Rights of the Committee on the Judiciary)
- Co-author with M. Rosman, "What Goes Up, Doesn't Come Down: The Absence of the Mitigating-Role Adjustment in Antitrust Sentencing," The Antitrust Source, August 2012
- "Who Will Control the Business Behind Business-to-Business Marketplaces?" Standards Engineering, Vol. 53, No. 2, 2001
- "Legal Services Corporation v. Velazquez: The Supreme Court's Missed Opportunity to Clarify the Viewpoint Discrimination Doctrine's Role in Subsidized Speech Cases," 50 Catholic University Law Review 539, 2001
Select Speaking Engagements
- Speaker, "Global State of Play: Antitrust and AI Series - Part 1: Algorithmic Pricing Litigation and Enforcement Update," Webinar, September 24, 2025
- Co-chair, "Cartels" session discussion, Antitrust in Asia, Cambridge Forum Conference, March 2025
- Moderator, "Are ESG and Antitrust at Odds with One Another?" Antitrust West Coast Conference, May 2024
- Presenter, “What's Next from the Biden Administration in Antitrust Enforcement? Considerations for Software Companies,” Webinar, February 9, 2022
- Panelist, "Forex Trial: Behind the Scenes with the Trial Attorneys," ABA Section of Antitrust Law, Cartel and Criminal Practice, Washington, D.C., January 22, 2019
- Panelist, "10th Anniversary of the AML: Trends, Challenges and Successes," UNCTAD and CUPL Conference, Beijing, China, November 2017
- Moderator, "Hiring, Salaries, and Antitrust: All You Need to Know about DOJ's Guidelines for HR Professionals," American Bar Association, December 16, 2016
- Co-presenter, "Extraterritorial Reach of the U.S. Antitrust Laws under the Foreign Trade Antitrust Improvements Act (FTAIA): New Court Decisions – On-Demand", Clear Law Institute Webinar, September 29, 2015
- Panelist, The Knowledge Group Webinar Legal Series, "U.S. Antitrust Laws - Developments in Extra-territorial Reach," January 30, 2015
- Privacy Policy
- Terms of Use
- Accessibility