Daniel Lewis

Daniel Lewis


Daniel is Co-Head of US Securities & Shareholder Litigation.

He focuses on representing financial institutions and corporations in complex securities class actions, M&A litigation and regulatory matters, as well as in commercial litigation involving financial products, derivatives and banking issues in federal and state courts. 

In particular, he has helped clients to manage matters in which cases have been filed in multiple jurisdictions. He also represents companies and officers and directors in complex commercial and ERISA litigation, and regularly provides securities and other litigation advice to a wide range of corporate clients.


Representative matters

Countrywide Financial Corporation in ongoing institutional RMBS purchaser actions in state and federal courts across the United States, including litigations in nine different states filed against Countrywide Financial and related entities by institutional plaintiffs such as federal home loan banks, mutual and hedge funds, insurance companies and regional banks.

Underwriters, including clients such as Bank of America, Citigroup, Goldman Sachs, Merrill Lynch, Credit Suisse and dozens of others in separate securities class actions arising out of recent stock offerings of companies such as Silicon Valley Bank, SunEdison, TerraForm Global, ARCP, The Honest Company, Arconic, Phoenix Tree, Sotera, Coupang, Clarivate, Hepsiburada, Loma Negra, Ping Identity, PPDAI, ZTO Express, Synchrony, CannTrust, Sunrun, Tesla, Teva Pharmaceuticals, Magnum Hunter Resources, MF Global, Fifth Third Bank, Focus Media, TCP International, Alnylam, MOL Global, Navient, Apigee, China Mobile Games & Entertainment, and Popular, Inc. (commonly known as Banco Popular).

Lead counsel to a major global bank in connection with lawsuit asserting claims under Brazilian law for environmental damages allegedly caused by mining company.

Lead counsel to a major global bank that arranged leveraged debt in connection with lawsuit brought by lenders.

Leadership Positions And Professional Affiliations

  • Co-founder of Beyond #MeToo—a working group on corporate governance, compliance and risk
[Daniel] has a very thorough understanding of clients’ businesses and is very tuned in to their needs and goals.
Chambers USA
He has a real willingness to help and go the extra mile.
Chambers USA



New York, 2002

District of Columbia, 2004


United States Court of Appeals for the District of Columbia, 2006

United States District Court for the Southern District of New York, 2009

United States Court of Appeals for the Second Circuit, 2017

United States District Court for the Eastern District of New York, 2020


B.A., magna cum laude, Columbia College, 1994, Phi Beta Kappa

J.D., Yale University, 1998

A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.