Connect with the people who investigated, litigated, and reviewed securities matters for the government.
Securities Litigation & Enforcement
Securities Experience From Inside the System
Securities matters are decided by a small set of institutions with distinct instincts: the SEC's enforcement staff, federal prosecutors, and the courts. The professionals below drafted and enforced securities regulations from inside those institutions, and that vantage point is what you engage them for.
Members in this practice area
Securities Litigation & Enforcement
Showing 1–24 of 75
Ranked by relevance to Securities Litigation & Enforcement from verified member profiles.
Kevin B. Muhlendorf
✓Verified15 years of government experience
Securities Enforcement and White Collar Defense
AI SummaryFormer Assistant Chief in DOJ Fraud Section and Senior Counsel at SEC, specializing in securities fraud and anti-corruption, now leading internal investigations and advising on white collar crime. Served as Acting Inspector General for WMATA, overseeing audits and investigations.
Global Co-Chair WhiteCollar Defense and Corp. Investigation
AI SummaryMark Racanelli served as an Assistant U.S. Attorney for five years, specializing in white collar crime and criminal law. His experience in litigation, corporate investigations, and regulatory enforcement suits him for roles in white collar crime, corporate law, and securities law.
AI SummaryLisa Noller served as an assistant U.S. attorney in Chicago, specializing in civil and criminal prosecutions. Her expertise in healthcare litigation and white-collar defense suits her for roles in complex fraud and regulatory matters.
Current
Litigation Department ChairFoley & Lardner LLP
Civil LitigationLegal
Former Government
Deputy ChiefU.S. Attorney’s Office
Civil LitigationFederal Government
Practice Areas
Litigation & TrialFalse Claims Act, Qui Tam, & Whistleblower DefenseBusiness Litigation+1
Sectors
Food SafetyHealthcare & Public HealthGovernment Services+1
AI SummaryByron J. McLain served as a federal prosecutor in the U.S. Attorney's Office for the Central District of California, specializing in white-collar crime. His current roles in white-collar criminal defense and corporate investigations leverage his prosecutorial experience.
White collar and finance-related investigations & litigation
AI SummaryRebecca Mermelstein served as an Assistant U.S. Attorney for over a decade, specializing in white-collar crime and finance-related investigations, which suits her current role as a partner in white-collar and finance-related investigations and litigation.
Civil litigation and white-collar criminal defense lawyer
AI SummaryMichael Tubach served as an Assistant U.S. Attorney and Bristow Fellow, specializing in civil litigation and criminal defense, which suits his current role as a civil litigation and white-collar criminal defense lawyer.
Current
Managing Partner of the Firm’s San Francisco office | Chair of O’Melveny’s firmwide Pro Bono CommitteeO'Melveny & Myers LLP
Government Enforcement Defense & Investigations Litigation
AI SummaryFormer Assistant US Attorney, now advising on government investigations and litigation, specializing in white-collar crime and complex civil litigation.
Current
Litigation Department Co-Chair / PartnerO'Melveny & Myers LLP
AI SummarySharon Bunzel served as an Assistant US Attorney, overseeing complex investigations. She specializes in white-collar defense, corporate investigations, and compliance programs.
AI SummaryServed as a trial attorney in the US Department of Justice and special assistant US Attorney; specializes in white-collar criminal defense, securities law, and corporate litigation.
Current
PartnerO'Melveny
Civil LitigationSecurities Law
Former Government
Trial AttorneyU.S. Department of Justice (DOJ)
Legal AssistanceGovernment
Practice Areas
Securities Litigation & EnforcementGovernment Law & ConsultingIntellectual Property Litigation+1
AI SummaryAaron S. Dyer served nearly seven years as a federal prosecutor in the U.S. Attorney’s Office in Los Angeles, specializing in complex fraud cases.
Current
PartnerPillsbury Winthrop Shaw Pittman LLP
AttorneyCivil Litigation
Former Government
Assistant United States AttorneyU.S. Attorney’s Office
AttorneyFederal Government
Practice Areas
Digital & E-Commerce Engagement & InnovationSportsForeign Corrupt Practices Act +1
AI SummaryThomas M. Johnson, Jr. served as General Counsel at the FCC, managing a team of over 70 attorneys. His expertise includes appellate litigation, administrative law, and communications law, making him well-suited for regulatory and high-stakes litigation matters.
Current
Partner & Co-Chair, Appellate PracticeWiley Rein LLP
Environmental LawCivil Litigation
Former Government
Deputy Solicitor GeneralAttorney General, Office of
White Collar, Cyber, Sentencing (Empirical Justice)
AI SummaryMichael Yaeger served as an Assistant U.S. Attorney, specializing in white collar crime and cybersecurity. His expertise in government investigations and compliance suits him for roles in cybersecurity and white collar crime defense.
AI SummaryDavid Feder served as Chief of the Cybercrime Unit at the U.S. Attorney’s Office, specializing in cybersecurity and complex litigation, now advising tech and life sciences companies.
White Collar & Internal Investigations Attorney at O'Melveny
AI SummaryMichele Wein Layne served as the SEC's Los Angeles Regional Director for eleven years, specializing in securities law and enforcement. She now practices white-collar and internal investigations at O'Melveny & Myers LLP.
Current
Of CounselO'Melveny & Myers LLP
AttorneySecurities
Former Government
Regional Director / Associate Regional Director / Assistant Regional Director / Branch Chief, Staff Attorney / Staff Attorney, EnforcementSecurities and Exchange Commission (SEC)
Funds, Trusts, & Other Financial VehiclesFinancial Data & Stock ExchangesSecurities, Commodity Contracts, & Other Financial Investments & Related Activities+1
Govt. Enforcement Defense, Investigations, and Litigation
AI SummaryFormer U.S. Attorney for the Eastern District of Wisconsin, specializing in civil litigation, criminal law, and health law. Currently partners in government enforcement defense, investigations, and litigation, focusing on complex trials, cybersecurity, and data privacy.
Current
Partner, Government Enforcement Defense, Investigations, and LitigationFoley & Lardner LLP
Civil LitigationPrivacy Law
Former Government
Assistant U.S. Attorney, Eastern District of WisconsinU.S. Department of Justice (DOJ)
AI SummaryServed as judicial law clerk for the U.S. Court of Appeals for the Eighth Circuit and U.S. District Court; specializes in complex commercial litigation, appeals, and international trade.
Current
PartnerWiley Rein LLP
Civil LitigationHearings and Appeals
Former Government
Judicial Law ClerkCourt of Appeals for the Eighth Circuit
Washington and New York, District of ColumbiaView Profile →
Jose F. Sanchez
✓Verified8 years of government experience
Experienced Outside Counsel & Big Law Litigation Partner
AI SummaryJose F. Sanchez served as lead counsel at Deloitte Global and as senior trial counsel at the SEC. His expertise in regulatory investigations, crisis management, and litigation suits him for roles in government enforcement and corporate defense.
AI SummaryMichael J. Connolly served as an Assistant U.S. Attorney focusing on economic crimes; his expertise in white collar crime and high-stakes litigation suits him for his current roles in government enforcement and corporate defense.
Current
PartnerHinckley Allen
AttorneyCivil Litigation
Former Government
Assistant United States AttorneyU.S. Attorney’s Office
AttorneyLegal Assistant
Practice Areas
Health CareWhite Collar Crime & Government InvestigationsConstruction+1
White Collar, Compliance and Investigations Co-Chair
AI SummaryPeter Morris served as an Assistant U.S. Attorney, specializing in criminal law and investigation. His expertise in white collar crime, compliance, and complex litigation suits him for roles in corporate compliance and defense.
Current
Partner, White Collar, Compliance and Investigations Co-ChairBarnes & Thornburg LLP
International White Collar Criminal Defense and Litigation
AI SummaryMauro M. Wolfe served as Assistant U.S. Attorney in the Securities and Healthcare Fraud Unit. His expertise in white-collar crime and compliance suits him for roles in corporate defense and litigation.
Investigations, cybersecurity, and securities enforcement
AI SummaryFormer Assistant U.S. Attorney for the District of New Jersey, specializing in corporate governance, fiduciary duty, and cybersecurity, with experience in securities enforcement and internal investigations.
Current
ShareholderCarlton Fields
Attorney
Former Government
Law ClerkCourt of Appeals for the Third Circuit
Law Clerk
Practice Areas
Securities Litigation & EnforcementCybersecurity Class Actions+1
Sectors
Insurance Carriers & Related ActivitiesSecurities, Commodity Contracts, & Other Financial Investments & Related ActivitiesEducation+1
White collar defense & investigations / tax controversy
AI SummaryFormer FINRA enforcement director and federal tax prosecutor with expertise in securities enforcement, tax controversy, and white collar litigation. Experienced in complex securities matters, government investigations, and regulatory enforcement.
Co-Chair, Privacy, Cyber and Data Governance, Wiley Rein LLP
AI SummaryFormer senior Department of Justice official, Megan L. Brown, specializes in cybersecurity, privacy, and national security law, advising global clients and associations on regulations and best practices.
Common Reasons People Seek Securities Regulation & Enforcement Expertise
A few of the situations these professionals are engaged for, among many:
SEC Investigation Response
A subpoena or formal order of investigation starts a process with its own rhythms: document demands, testimony, and eventually the staff's view of your conduct. Former enforcement attorneys have run that process and know what each stage signals.
Wells Submissions and Defense Strategy
Before the SEC recommends charges, respondents can make their case. People who evaluated those submissions on the staff side know which arguments actually change outcomes and which fall flat.
Securities Class Actions
Shareholder suits follow stock drops, restatements, and merger announcements. Former government litigators and judges bring independent case assessment and expert testimony to both sides.
Disclosure and Materiality Decisions
Deciding what to disclose and when, from earnings issues to cyber incidents, turns on materiality judgments the SEC's own reviewers spent careers making.
Internal Investigations
Allegations of accounting fraud, insider trading, or misrepresentation demand internal reviews credible to regulators, and former enforcement staff and prosecutors deliver exactly that credibility.
Compliance and Examinations
Compliance programs, trading surveillance, and registrant obligations are easier to build and test with people who examined them for the government.
Backgrounds
Some of the Securities Backgrounds You'll Find
Members come from across the institutions that police the markets:
SEC Division of Enforcement
The Securities and Exchange Commission's enforcement arm investigates and litigates securities violations. Former staff attorneys and accountants map to investigation response, defense strategy, and settlements.
SEC Corporation Finance
Reviews public-company filings and disclosure. Former staff map to materiality calls, registration questions, and disclosure practice.
DOJ and U.S. Attorney's Offices
Federal prosecutors handle criminal securities fraud alongside the SEC's civil track. Former prosecutors map to parallel-proceedings strategy and trial work.
CFTC
The Commodity Futures Trading Commission polices derivatives and commodities markets. Former staff map to trading cases that cross both regimes.
State Securities Regulators
State regulators run their own registration and enforcement programs. Former state securities officials map to multistate exposure and state-law claims.
Federal Judiciary
Former federal judges and law clerks map to case evaluation, mock exercises, and dispositive-motion strategy in securities litigation.
Why It Matters
The Inside Vantage Point
Securities enforcement runs on judgment: what the staff treats as cooperation, what a jury will make of a trading pattern, what a judge expects from a disclosure. Browse the ranked professionals above and reach out directly to the background that fits your matter.
FAQs
Working With These Professionals
What does government experience add in a securities matter?
Enforcement outcomes turn on staff discretion: what gets charged, what settles, and on what terms. People who exercised that discretion read your situation the way the government will.
Can I bring someone in before there's an investigation?
Yes. Disclosure reviews, compliance assessments, and trading-surveillance checks before any inquiry are a large share of what these professionals do.
How do I choose the right background?
Match the institution you face: SEC inquiries point to former enforcement staff; criminal exposure points to former prosecutors; class actions point to former judges and litigators; disclosure questions point to Corporation Finance alumni.
Can these professionals serve as expert witnesses?
Many do, testifying on market practice, disclosure standards, and regulatory process with credibility earned inside the institutions whose expectations are in question.
Is this only for public companies?
No. Founders facing their first SEC inquiry, funds building compliance programs, and counsel needing an independent view all engage through the directory. Scope and terms are agreed directly with the person you contact.
How do I engage someone listed here?
Profiles link directly to each member's contact details, with no intermediary and no fee. Reach out to the person whose background matches your situation.
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