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Senior Managing Associate
Takayuki Ono
- White Collar Defense and Investigations
- Commercial Litigation and Disputes
TAKAYUKI ONO represents clients facing significant crisis situations, government and internal investigations, and complex commercial litigation. Tak’s practice primarily focuses on matters that involve challenging cross-border and multi-jurisdictional issues. He also has broad litigation experience, which includes arguing dispositive and discovery motions, taking and defending depositions of fact and expert witnesses, and drafting major briefs in complex cases. He has represented clients in the automotive, biotechnology, energy, financial, healthcare, medical devices, pharmaceutical, retail, and technology industries.
As one of the very few Japanese-English bilingual lawyers in the U.S. focusing on high-stakes investigations and litigation, Tak draws on his deep understanding of Japanese business culture and language skills to assist multinational companies and their U.S. and Japanese subsidiaries.
Prior to joining Sidley, Tak assisted the U.S. Department of Justice and the Securities and Exchange Commission in prosecuting fraud allegations against large corporations. He worked with federal prosecutors to investigate companies by identifying and interviewing key witnesses, reviewing and assessing corporate documents, collecting and analyzing relevant data, and evaluating potential legal claims. Tak was also an antitrust associate at a major international law firm, assisting clients facing government investigations and litigation involving allegations of anticompetitive conduct.
In a previous career, Tak served as a professional journalist after graduating from Northwestern University’s Medill School of Journalism, one of the premier journalism schools in the world. As a news reporter, he conducted live, on-air reports and interviews for an award-winning television news station in Wisconsin.
Tak is passionate about increasing diversity, equity, and inclusion in the legal profession and is actively involved in strategies and initiatives that promote those goals. He is the past chair of the Chicago Committee on Minorities in Large Law Firms. He also serves in a leadership role on the Associate Diversity Council in Sidley’s Chicago office.
As one of the very few Japanese-English bilingual lawyers in the U.S. focusing on high-stakes investigations and litigation, Tak draws on his deep understanding of Japanese business culture and language skills to assist multinational companies and their U.S. and Japanese subsidiaries.
Prior to joining Sidley, Tak assisted the U.S. Department of Justice and the Securities and Exchange Commission in prosecuting fraud allegations against large corporations. He worked with federal prosecutors to investigate companies by identifying and interviewing key witnesses, reviewing and assessing corporate documents, collecting and analyzing relevant data, and evaluating potential legal claims. Tak was also an antitrust associate at a major international law firm, assisting clients facing government investigations and litigation involving allegations of anticompetitive conduct.
In a previous career, Tak served as a professional journalist after graduating from Northwestern University’s Medill School of Journalism, one of the premier journalism schools in the world. As a news reporter, he conducted live, on-air reports and interviews for an award-winning television news station in Wisconsin.
Tak is passionate about increasing diversity, equity, and inclusion in the legal profession and is actively involved in strategies and initiatives that promote those goals. He is the past chair of the Chicago Committee on Minorities in Large Law Firms. He also serves in a leadership role on the Associate Diversity Council in Sidley’s Chicago office.
Experience
- Memberships and Activities
- Japanese American Bar Association
- Board of Governors (2023 – present)
- Founder/Co-Chair, Chicago Regional Committee (2018 – present)
- Chicago Committee on Minorities in Large Law Firms
- Chair, Associate Board (2022)
- Vice Chair, Associate Board (2021)
- Secretary & Treasurer, Associate Board (2020)
- Asian American Bar Association of Greater Chicago
- Board of Directors (2021)
Capabilities
SERVICES AND INDUSTRIES
- Commercial Litigation and Disputes
- White Collar Defense and Investigations
- Antitrust Government Investigations
- Biotechnology
- Board Crisis Management and Strategic Response
- Compliance Counseling - White Collar
- Consumer Protection and Unfair Trade Practices
- Corporate Risk Management and Critical Matters
- Cross Border Disputes
- Electronics and Semiconductors
- Environmental Crisis Management
- False Claims Act
- FCPA/Anti-Corruption
- Financial Institutions Litigation
- Government Contracting, Bid Protests and the False Claims Act
- Healthcare Enforcement
- Healthcare Fraud
- Internal Investigations
- Multidistrict Litigation
- Pharmaceuticals
- Technology, Media and Privacy Law
News & Insights
Credentials
Admissions & Certifications
- U.S. Supreme Court
- U.S. Court of Appeals, 7th Circuit
- U.S. District Court, N.D. of Illinois - General
- U.S. District Court, C.D. of Illinois
- U.S. District Court, E.D. of Wisconsin
- Illinois
Education
- Northwestern School of Law, J.D., 2015 (cum laude)
- Northwestern University, B.S., 2010
Languages
- Japanese