Arielle S.Tobin


Dallas + 1.214.969.2947

Arielle Tobin defends corporations and their directors and officers in civil, criminal, and regulatory disputes, including government enforcement actions. Arielle focuses her practice on civil disputes and government enforcement actions involving issues relating to financial reporting, accounting fraud, financial fraud, and securities.

Arielle has litigated complex commercial disputes relating to breach of contract, fraud, negligence, residential mortgage-backed securitizations, False Claims Act (FCA) violations, state and local tax, securities litigation, health care fraud, and director and officer liability. She regularly represents clients in criminal and civil proceedings and related investigations in response to alleged Foreign Corrupt Practices Act (FCPA), UK Bribery Act, accounting fraud, financial fraud, securities fraud, and customs violations. Arielle has conducted and managed sensitive internal investigations in more than 10 countries across North, Central, and South America, Europe, and Asia. In addition, she has performed multinational risk assessments and regularly advises companies on compliance with securities, anticorruption, insider trading, and data privacy laws.

Prior to practicing law, Arielle earned her CPA license and worked for the audit group at PricewaterhouseCoopers. Her experience as an auditor makes her distinctively qualified to understand complex accounting fraud and work seamlessly with forensic accountants when investigating or litigating fraud or other financial crimes.

Arielle is deeply involved in local and international pro bono efforts. She has devoted hundreds of hours of pro bono representation to domestic violence victims seeking asylum in the United States and advising on human rights abuses in Latin America.


  • U.S. Bank prevails on appeal and obtains settlement in putative class action alleging tens of billions in class-wide losses in connection with residential mortgage-backed securitiesJones Day represented U.S. Bank National Association in putative class actions filed in New York state court seeking tens of billions of dollars in alleged class-wide losses in connection with investments in certificates and notes issued by over 800 residential mortgage-backed securities trusts for which U.S. Bank served as trustee.
  • Canadian ice manufacturer secures Third Circuit affirmation of dismissal of fraud and negligence claims in Delaware bankruptcy court adversary proceedingJones Day secured a precedential ruling from the Third Circuit on behalf of a Canadian ice manufacturer affirming the dismissal of claims alleging that the manufacturer and its former trustees and corporate secretary had violated FINRA and SEC rules in connection with the payment of distributions under a bankruptcy plan of arrangement.
  • U.S. Bank defeats class certification in putative class action alleging billions in class-wide losses in connection with residential mortgage-backed securitiesJones Day represented U.S. Bank National Association in a putative class action seeking billions of dollars in alleged class-wide losses in connection with investments in notes issued by 25 residential mortgage-backed securities trusts for which U.S. Bank served as trustee.
  • Audit committee of leading producer of hydrocarbon products conducts internal investigation into allegations of accounting improprietiesJones Day is representing an audit committee of a leading producer of hydrocarbon products in an internal investigation into allegations of accounting improprieties.
  • PMFG Board of Directors defends three cases filed by shareholders of PMFG, Inc. related to PMFG's proposed merger with CECO EnvironmentalJones Day represents the Board of Directors of PMFG, Inc. in connection with litigation filed by shareholders of PMFG in Texas and Delaware, in which shareholders allege that the PMFG Board breached their fiduciary duties by agreeing to a proposed merger with CECO Environmental Corp. without securing sufficient consideration from CECO, pursuant to a flawed process that was tiled in favor of one particular group of shareholders, and have asked the shareholders to vote on the proposed transaction without providing sufficient disclosures.
  • Major multinational corporation undergoes internal investigation into accounting fraud and corruptionJones Day conducted an internal investigation into alleged accounting fraud and corruption in the international operations of a major publicly traded multinational corporation.
  • Former controller represented in SEC investigationJones Day represented a former controller in connection with SEC investigation into alleged earnings management and accounting fraud.
  • Multinational pharmaceutical company conducts independent investigation of whistleblower allegations pursuant to contract audit rightsOn behalf of a privately-owned multinational pharmaceutical company, Jones Day conducted an independent investigation of alleged misconduct and possible Foreign Corrupt Practices Act (FCPA) violations in Guatemala, Panama and Mexico.
  • Jones Day lawyers advise women and children seeking refugeJones Day lawyers are representing mothers with children as well as unaccompanied children in well over 100 cases arising from the flood of refugees seeking refuge in the United States from violence in Central America.
  • Distributor of truck and trailer parts investigates employee theft ringJones Day assisted a Texas-based distributor of truck and trailer parts with investigating several employees for the theft of money and high-value inventory.
  • Speaking Engagements

    • October 22, 2020
      Compliance Perspectives Podcast Series on The Compliance & Ethics Blog: Compliance Officer Liability Risk
    • September 15, 2020
      Panelist, 19th Annual SCCE Compliance & Ethics Institute, Compliance in the Crosshairs: What the Courts Are Saying About Effective Compliance Practices in Compliance Officer Liability Cases
    • September 13, 2017
      Representing the Client under the Common Interest or Joint Defense Privilege: How Attorneys Should Meet their Ethical Obligations, Celesq / Thomson West
    • May 22, 2017
      Dallas Bar Association Securities Section CLE: Navigating the Wells Process for Individual Clients
    • December 13, 2016
      2016 Jones Day & Whitley Penn SEC Accounting, Legal, and Enforcement Seminar