John Clarke > DLA Piper LLP (US) > New York, United States > Lawyer Profile

DLA Piper LLP (US)
NEW YORK, NY 10020-1104
United States
John Clarke photo

Work Department

Corporate; Litigation, Arbitration and Investigations; Corprate and Securities Litigation; Mergers and Acquisitions; Public Company and Corporate Governance; Financial Services; Life Sciences


Partner & Co-Chair of of DLA Piper’s US Corporate and Securities Litigation Practice


John Clarke represents clients in complex litigation and internal investigations involving financial institutions, securities and financial instruments, structured transactions, accounting issues and corporate governance disputes.

He also represents clients in a variety of litigation matters involving the antitrust and bankruptcy laws. He has significant experience in litigation involving financial institution insolvencies. He is a frequent speaker and writer on issues involving financial institutions, corporate governance and the federal securities laws. He is past chairman of the Banking Law Committee of the Association of the Bar of the City of New York.


J.D., University of Virginia; A.B., Dartmouth College

Lawyer Rankings

United States > Dispute resolution > Securities litigation: defense

The attorneys have actual experience in the trenches, meaning significant trial experience, former employment in government enforcement, and active cases against the government‘, says a client of DLA Piper LLP (US). A key strength is the firm’s ability to provide experienced local representation in courts nationwide, including in the busiest jurisdictions for securities class actions and regulatory enforcement actions. ‘They execute strategies with confidence and are relentless in representing us‘, says a client of the practice led by John Clarke in New York and James Mathias in Baltimore. Amy Ruhland in Austin, San Diego-based Shirli Fabbri Weiss and, on the SEC enforcement side, John Hillebrecht in New York play key roles in the practice. ‘The team is extremely responsive, hardworking and successful in litigation‘, says a client.

United States > Dispute resolution > M&A litigation: defense

DLA Piper LLP (US) has a highly-rated transactional M&A practice, especially for mid-market public companies, giving it a growing role in deal-related litigation in that section of the market. It also has a key role in the market for real estate investment trusts (REITs) and related litigation. John Clarke in New York and James Mathias in Baltimore are the heads of the national corporate and securities litigation practice. While both are focused predominantly on securities litigation, they work on M&A-related cases in tandem with the firm’s specialist team in Delaware and litigators in the firm’s other US offices. Specialist Delaware litigator John Reed has ‘incisive legal analysis packaged with a great instinct for litigation‘. In Phoenix, Laura Sixkiller is emerging as a litigation partner with a broad portfolio that includes M&A defense work.