Private company

A&O Shearman

Logo: Unknown author Unknown author, CC BY-SA 4.0, via Wikimedia Commons3

Multinational law firm

Allen Overy Shearman Sterling LLP (commonly A&O Shearman) is a multinational law firm. The firm was formed as a result of a merger between Magic Circle firm Allen & Overy and white shoe firm Shearman & Sterling, creating a firm estimated to have nearly 4,000 attorneys across 49 offices with a combined revenue of $3.4 billion, making it the third biggest law firm in the world.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

2024Founded1

Allen Overy Shearman Sterling LLP (commonly A&O Shearman) is a multinational law firm. The firm was formed as a result of a merger between Magic Circle firm Allen & Overy and white shoe firm Shearman & Sterling, creating a firm estimated to have nearly 4,000 attorneys across 49 offices with a combined revenue of $3.4 billion, making it the third biggest law firm in the world.2

Timeline

  1. 2024Founded Founded1

Sources

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