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About Me

Ryan Dwight O’Quinn’s practice concentrates on fraud in the securities and commodities industries, where his clients often face parallel civil-regulatory and criminal investigations.  For nearly a decade, Mr. O’Quinn served as a key financial services regulator, both as Senior Counsel in the Securities and Exchange Commission’s Enforcement Division and as the Assistant United States Attorney leading the Southern District of Florida’s Securities and Investment Fraud Initiative.


Languages Spoken: English, Spanish

Practice Areas


  1. Securities & Investment Fraud: 40%
    14 years, 125 cases
  2. Consumer Protection: 30%
    5 years, 10 cases
  3. Health Care: 30%
    11 years, 12 cases

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Contact Info

O'Quinn Stumphauzer, PL

SunTrust International Center
One SE Third Avenue, Suite 1820
Miami, FL, 33131


NYCurrently registered 200603/13/2015
FLMember in Good Standing200109/08/2015

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
Leader in the Field - White Collar DefenseChambers & Partners USA Guide2014
AV Preeminent 5.0 out of 5 Peer Review RatedMartindale-Hubbell2013
Top LawyerSouth Florida Legal Guide2011
40 under 40, Outstanding Lawyers of Miami-Dade County AwardCystic Fibrosis Foundation2011
Top LawyerSouth Florida Legal Guide2010
Work Experience
TitleCompany NameDuration
PartnerO'Quinn Stumphauzer, PL2011 - Present
AUSAU.S. Department of Justice - Office of United States Attorney SDFL2008 - Present
Senior CounselU.S. Securities and Exchange Commission2003 - 2008
AssociateWHITE & CASE2001 - 2003
Association NamePosition NameDuration
Southern District of Florida, Bench & Bar Conference Planning CommitteeMember2013 - Present
Legal Cases
Case NameOutcome
United States v. Barry MinkowSuccessful
United States v Larry WilcoxSuccessful
SEC v. Mutual Benefits Corp., et alSuccessful
See all Legal Cases 
School NameMajorDegreeGraduated
Washington and Lee University School of LawLawJD - Juris Doctor2001
Princeton UniversityHistoryAB1997