Securities and corporate governance litigation, especially class actions, can expose companies to significant business, market, and reputational risk.
Ashurst Perkins Coie Securities Litigation lawyers defend clients in class actions, corporate governance litigation, regulatory enforcement proceedings, and professional liability matters. We represent publicly traded and privately held securities issuers, officers and directors, investment advisers, and professional services firms in high-stakes disputes and investigations.
We have served as lead counsel for national and regional clients in matters involving shareholder class actions alleging securities fraud, shareholder derivative actions alleging breach of fiduciary duty, proceedings before the SEC, disputes arising from mergers, acquisitions, and other contests for control, investigations by federal agencies and self-regulatory organizations, litigation involving financial statement audits and other accounting issues, and claims against law firms, accounting firms, and other professional services firms.
Client-focused representation
We align our strategy with each client’s objectives and business priorities, delivering practical, business-focused counsel in securities litigation and related investigations.
Trusted defense in high-stakes securities disputes
Our experience includes representing companies, directors, and officers in class actions, corporate governance and M&A litigation, and regulatory investigations, as well as defending law firms, accounting firms, and other professional services firms in disputes involving financial statement audits and other accounting issues.
Securities and governance risk counseling
Our team provides advice and counsel on minimizing risks associated with securities and corporate governance litigation and regulatory investigations.
How we can help
-
Reducing securities litigation risks
Read moreReducing securities litigation risks
Understanding and navigating securities laws can be complex, particularly in international capital market transactions such as registered offerings and private placements of equity and debt securities into the United States.
These matters require transactional, regulatory, and litigation experience, as well as knowledge of applicable federal and state law. We advise corporate clients, investment banks, companies, and their directors and officers on U.S. securities matters, and we defend securities, corporate governance, and professional negligence cases, including class actions and government investigations. We also counsel clients on how to anticipate, minimize, and respond to the risks and business interruptions that can result from these matters.
-
Professional liability litigation
Read moreProfessional liability litigation
We understand the difference between professional judgment and outcome and have experience defending professionals by educating courts and other decision-makers on this critical distinction.
Our lawyers defend law firms, accounting firms, and other professional services firms and their individual practitioners in civil litigations, investigations, enforcement and disciplinary matters, disqualifications, and criminal proceedings. We have successfully represented law firms and lawyers in high-stakes malpractice lawsuits; in SEC, U.S. Department of Justice, and state attorney general investigations; and other disciplinary proceedings.
We also have conducted internal investigations prompted by allegations of professional misconduct and have advised law firms and legal departments of corporations on risk management policies and procedures in order to mitigate the risk of future professional liability claims. In addition, we have substantial experience representing accounting firms in civil litigation and disciplinary proceedings before the American Institute of Certified Public Accountants, state boards of accountancy, and other professional organizations. -
Regulatory enforcement
Read moreRegulatory enforcement
We have represented clients in every major securities enforcement initiative conducted by the SEC, the Financial Industry Regulatory Authority, and state regulatory agencies for decades. These matters have included handling investigations involving insider trading, financial fraud, Ponzi schemes, hedge funds, the subprime and credit crisis, auction rate securities, accounting irregularities, options backdating, mutual fund trading, and the Foreign Corrupt Practices Act. For related capabilities in government investigations and enforcement matters, see our White Collar & Investigations and Regulatory Compliance & Disputes practices.
Related insights
Carousel: clicking the "Previous" or "Next" button changes the content between the buttons.
-
Thought leadership
Spotlight on Nicholas Ferrer: celebrating the creation of Ashurst Perkins Coie
July 16, 2026
Discover more -
Legal development
Australian electricity and gas markets – May and June 2026 Update
July 16, 2026
Discover more -
Thought leadership
Streamlined and strengthened: Australian foreign investment reforms
July 16, 2026
Discover more -
Thought leadership
Dragged too far: the Takeovers Panel blocks Mobile Asset's proposed constitutional amendments
July 16, 2026
Discover more -
Legal development
New faces at the top, same storm for employers: Preparing for an unfair dismissal overhaul
July 15, 2026
Discover more -
Legal development
AI at work: Managing legal risk across the fast moving global landscape
July 15, 2026
Discover more -
Legal development
Supreme Court green-lights the Texas age verification law for app stores
July 14, 2026
Discover more -
Legal development
Trading with China – new uncertainties to affect import and export cargo
July 14, 2026
Discover more -
Legal development
Quoted Company Newsletter Q2 2026
July 14, 2026
Discover more -
Risk Insight
Automated decisions in Australia series – Part 1: a quick guide to Australia's new privacy rules
July 13, 2026
Discover more -
Legal development
In major geofence warrant case, Supreme Court holds that government access to smartphone location history data is a search
July 13, 2026
Discover more -
Legal development
Agents on the pitch: regulating third parties in sport
ECJ Ruled on Article 101(1) TFEU's application to German Football Association rules on football agents (ROGON, C-428/23)
July 13, 2026
Discover more
Related news
View allCarousel: clicking the "Previous" or "Next" button changes the content between the buttons.
-
News Ashurst Perkins Coie advises JBIC on JPY80 billion green Loan to PGCIL
July 10, 2026
Discover more -
News Ashurst Perkins Coie advises on RIGOL Technologies' HK$1.14 billion Hong Kong IPO
July 09, 2026
Discover more -
News Ashurst Perkins Coie advises UK Government on lifetime extension of Sizewell B Nuclear Facility
July 09, 2026
Discover more -
News Ashurst Perkins Coie advises Oaktree Capital on US$20m cornerstone investment in Momenta Global Limited
July 08, 2026
Discover more -
News Ashurst Perkins Coie's Australian M&A team delivers for clients in H1 2026
July 08, 2026
Discover more -
News Ashurst advises K+S on the acquisition of Qemetica’s salt business
July 08, 2026
Discover more -
News Ashurst Perkins Coie advises lenders on £315 million financing for Island Green Power
July 07, 2026
Discover more -
News Ashurst Perkins Coie advises Arcus Infrastructure Partners on agreement to acquire Volta Data Centres
July 06, 2026
Discover more -
News Ashurst Perkins Coie advises African Development Bank on Egypt's inaugural sustainability Samurai bond
July 03, 2026
Discover more -
News Ashurst Perkins Coie advises HIH Invest on the sale of an office building in Dresden
July 02, 2026
Discover more -
News Ashurst Perkins Coie advises abrdn on the sale of a mixed-use property in Munich
July 02, 2026
Discover more -
News Ashurst Perkins Coie advises Capricorn Energy on its US$360 million recommended takeover by Genel Energy
July 02, 2026
Discover more