Sharon A. O'Shaughnessy attorney profile image

Sharon A. O'Shaughnessy
C: (917) 538-9223
1185 Avenue of the Americas
21st Floor
New York, NY 10036
T: (212) 880-3990
F: (212) 880-3998
Practice Areas
  • J.D., Seton Hall University School of Law, 2012
  • M.A., New York University, 2004
  • B.S., magna cum laude, New York University, 2003
  • New York
  • U.S. District Court, Eastern District of New York
  • U.S. District Court, Southern District of New York


Sharon O’Shaughnessy focuses her practice on defending and advising financial services firms and their employees in regulatory investigations and enforcement proceedings, litigation involving securities law and commercial claims, compliance with regulatory requirements, and cybersecurity and data privacy issues.   

Enforcement and Regulatory Matters. Ms. O’Shaughnessy represents financial services firms and their employees in regulatory and government investigations and enforcement proceedings by the SEC, FINRA, and various state regulators. She successfully convinces regulators not to pursue disciplinary action and regularly negotiates favorable settlement terms for regulatory matters involving myriad subject matter including, but not limited to, fraud, manipulative and insider trading, whistleblower allegations, order handling, inadequate supervision, and inadequate policies and procedures.

Litigation. Ms. O’Shaughnessy represents companies and individuals accused of business crimes, public corruption, securities law violations, and fraudulent practices by U.S. Attorneys’ Offices, State Attorneys General, District Attorneys’ Offices, and the SEC. From 2017–2021, Ms. O’Shaughnessy has been recognized as a New York "Rising Star" in the area of Criminal Defense: White Collar by Super Lawyers. She also represents financial services firms and their employees in federal and state court matters, as well as FINRA arbitrations, relating to commercial and employment issues. Prior to attending law school, Ms. O’Shaughnessy worked as a Senior Case Manager at JAMS, which provided her with an extensive background in Alternative Dispute Resolution.

Cybersecurity. Ms. O’Shaughnessy regularly advises and lectures on cybersecurity and data privacy trends and compliance, data breaches, incident response, and third-party cyber risk management.

Ms. O’Shaughnessy is actively committed to pro bono service and diversity, equity, and inclusion.

Pro Bono Service. Since 2014, Ms. O’Shaughnessy has served as a Volunteer Attorney for the New York City Bar Association's Legal Clinic for the Homeless, providing advice, advocacy, and representation to residents of homeless shelters on a variety of matters related to state and federal public benefits, shelter placements, and domestic violence issues. In 2017, Ms. O’Shaughnessy was recognized for her distinguished pro bono service to the New York State Courts Access to Justice Program, through which she dispensed legal advice to unrepresented litigants appearing in the New York State Courts.

Diversity, Equity, and Inclusion. In 2021, Ms. O’Shaughnessy was selected to the Leadership Council on Legal Diversity (“LCLD”) Fellows Program. The program recognizes diverse attorneys who have distinguished themselves as leaders at their organizations and in the legal industry. LCLD is comprised of over 320 corporate chief legal officers and law firm managing partners who serve as mentors and leaders dedicated to fostering diversity. She is also a Chair of Murphy & McGonigle’s Women’s Initiative, which strives to attract, retain, and champion top-flight female legal talent. The Women’s Initiative hosts, sponsors, and participates in several efforts that advance the development of women in law.

Recognitions, Honors, & Awards

  • Sharon O’Shaughnessy Recognized as “Rising Star” – 2017–2021 Super Lawyers of New York (Criminal Defense: White Collar)