A&O Shearman
| Company type | LLP |
|---|---|
| Industry | Legal services |
| Predecessor | Allen & Overy, Shearman & Sterling |
| Founded | May 1, 2024 |
Area served | Worldwide |
| Products | Legal services |
Number of employees | 4000+ |
Allen Overy Shearman Sterling LLP (commonly known as A&O Shearman) is a global law firm created through the union of the magic circle firm Allen & Overy and the prestigious white shoe firm Shearman & Sterling. This merged entity employs more than 4,000 lawyers across 48 locations worldwide and generates $3.4 billion in annual revenue, positioning it as the third-largest law firm on a global scale.
The merger was publicly announced on 21 May 2023 and received overwhelming approval from over 99% of partners at both firms by 13 October 2023. The integration was finalized on 1 May 2024, making A&O Shearman the fourth-largest law firm internationally.
In September 2024, the firm opted to shut down its operations in South Africa, choosing instead to support clients in Sub-Saharan Africa through its other international offices. Subsequently, by January 2025, a total of 57 former South African team members, including 14 partners, transitioned to Bowmans as part of a planned growth strategy.
In April 2025, A&O Shearman’s United States branches pledged $125 million worth of pro bono services in support of initiatives endorsed by President Donald Trump, in reaction to potential executive orders aimed at law firms.