A&O Shearman was established in 2024 through the landmark merger of two historic firms, Allen & Overy and Shearman & Sterling, creating a new kind of global law firm designed to achieve unparalleled outcomes for clients. With nearly 4,000 lawyers worldwide, we are uniquely fluent in English law, U.S. law, and the laws of the world’s most dynamic markets, positioning us to advise seamlessly on the most complex and multijurisdictional matters.

Our firm operates at the forefront of the forces reshaping global business. We bring together unmatched insight, seamless collaboration, and deep market knowledge to deliver results that matter. At our core, we are guided by strong values, a commitment to sustainability, and a culture where individuals from diverse backgrounds and perspectives excel, belong, and make a decisive impact.

Clients benefit from our collective experience with some of the world’s most influential companies and institutions. Our lawyers have a longstanding reputation for building trusted relationships, thriving on collaboration, and driving innovation. This experience has enabled us to contribute to precedent-setting transactions and disputes, shaping the legal and business landscape.

We advise more than a third of NYSE-listed companies, a fifth of the NASDAQ, and a significant proportion of issuers on the London Stock Exchange, Euronext, Euronext Paris, Tokyo Stock Exchange, and Hong Kong Stock Exchange.

Our areas of strength span advisory and regulatory, capital markets, corporate and M&A, disputes, finance, and legal innovation. This breadth of expertise, combined with our global reach, creates a firm with the power to influence our clients’ fortunes and apply the law in groundbreaking ways—whether through innovative thinking, transformative deals, or new products and technologies.

A&O Shearman stands as a firm built for the future: global, innovative, and relentless in delivering excellence.