United States
A&O Shearman delivers U.S. legal advice of the highest quality to leading domestic and international corporations, public and private investment funds and family offices, and financial institutions.
![united-states](/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fallenoveryllp1-aoshearmanwe0db-production-ecf3%2Fmedia%2Fproject%2Faoshearman%2Faoshearman%2Flocation%2Funited-states.jpg%3Fh%3D1650%26iar%3D0%26w%3D1320&w=1920&q=75)
With more than 650 attorneys in offices across the country we handle our clients’ biggest and most complex M&A, finance and capital markets transactions; strategic issues; commercial and IP disputes; investigations; and regulatory matters. Clients trust our teams to provide timely advice on day-to-day issues and to navigate them through their most critical challenges.
Meet our leads
![Image](/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fallenoveryllp1-aoshearmanwe0db-production-ecf3%2Fmedia%2Fproject%2Faoshearman%2Faoshearman%2Fpeople-profile%2Fd%2Fa%2Fdave_lewis_253061_2026x1520.jpg%3Fh%3D1520%26iar%3D0%26w%3D2026&w=1080&q=75)
Dave Lewis
Partner
New YorkSee our offices
![Cactus](/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fallenoveryllp1-aoshearmanwe0db-production-ecf3%2Fmedia%2Fproject%2Faoshearman%2Faoshearman%2Foffices%2Faustin.jpg%3Fh%3D350%26iar%3D0%26w%3D634&w=1080&q=75)
Austin
United States
+1 512 647 1900
300 West 6th Street Texas 78701
![Exterior of modern architecture](/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fallenoveryllp1-aoshearmanwe0db-production-ecf3%2Fmedia%2Fproject%2Faoshearman%2Faoshearman%2Foffices%2Fboston.jpg%3Fh%3D350%26iar%3D0%26w%3D634&w=1080&q=75)
Boston
United States
+1 857 353 4500
One Beacon Street MA 02108
![bull with long horns](/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fallenoveryllp1-aoshearmanwe0db-production-ecf3%2Fmedia%2Fproject%2Faoshearman%2Faoshearman%2Foffices%2Fdallas.jpg%3Fh%3D350%26iar%3D0%26w%3D634&w=1080&q=75)
Dallas
United States
+1 214 271 5777
The Link at Uptown, 2601 Olive Street, 17th Floor Texas 75201
![The Saturn V rocket was the launch vehicle beneath the Apollo moon landing program. Standing 363 ft tall, 33 ft in diameter the rocket boosted the Apollo crews out of Earth's atmosphere as fast as a bullet.](/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fallenoveryllp1-aoshearmanwe0db-production-ecf3%2Fmedia%2Fproject%2Faoshearman%2Faoshearman%2Foffices%2Fhouston.jpg%3Fh%3D350%26iar%3D0%26w%3D634&w=1080&q=75)
Houston
United States
+1 512 647 1900
800 Capitol Street Texas 77002
![Aerial view of pier and beach over the Pacific Ocean at sunset .](/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fallenoveryllp1-aoshearmanwe0db-production-ecf3%2Fmedia%2Fproject%2Faoshearman%2Faoshearman%2Foffices%2Flos-angeles.jpg%3Fh%3D350%26iar%3D0%26w%3D634&w=1080&q=75)
Los Angeles
United States
+1 424 512 7150
1900 Avenue of the Stars Suite 425 CA 90067
![Flatiron building against cloudy sky in manhattan, New York, United States.](/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fallenoveryllp1-aoshearmanwe0db-production-ecf3%2Fmedia%2Fproject%2Faoshearman%2Faoshearman%2Foffices%2Fnew-york.jpg%3Fh%3D350%26iar%3D0%26w%3D634&w=1080&q=75)
New York
United States
+1 212 610 6300
1221 Avenue of the Americas NY 10020
![Flatiron building against cloudy sky in manhattan, New York](/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fallenoveryllp1-aoshearmanwe0db-production-ecf3%2Fmedia%2Fproject%2Faoshearman%2Faoshearman%2Foffices%2Fnew-york.jpg%3Fh%3D350%26iar%3D0%26w%3D634&w=1080&q=75)
New York
United States
+1 212 848 4000
599 Lexington Avenue NY 10022
![Golden Gate Bridge, San Francisco](/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fallenoveryllp1-aoshearmanwe0db-production-ecf3%2Fmedia%2Fproject%2Faoshearman%2Faoshearman%2Foffices%2Fsan-francisco-ca.jpg%3Fh%3D350%26iar%3D0%26w%3D634&w=1080&q=75)
San Francisco
United States
+1 415 796 4160
140 New Montgomery CA 94105
![Exit sign for Sand Hill Road on Highway 280 in Menlo Park, California](/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fallenoveryllp1-aoshearmanwe0db-production-ecf3%2Fmedia%2Fproject%2Faoshearman%2Faoshearman%2Foffices%2Fmenlo-park-ca.jpg%3Fh%3D350%26iar%3D0%26w%3D634&w=1080&q=75)
Silicon Valley
United States
+1 650 838 3600
1460 El Camino Real CA 94025
![Exit sign for Sand Hill Road on Highway 280 in Menlo Park, California](/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fallenoveryllp1-aoshearmanwe0db-production-ecf3%2Fmedia%2Fproject%2Faoshearman%2Faoshearman%2Foffices%2Fmenlo-park-ca.jpg%3Fh%3D350%26iar%3D0%26w%3D634&w=1080&q=75)
Silicon Valley
United States
+1 650 838 3600
1460 El Camino Real CA 94025
![Frederick Douglass Memorial Bridge Washington DC](/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fallenoveryllp1-aoshearmanwe0db-production-ecf3%2Fmedia%2Fproject%2Faoshearman%2Faoshearman%2Foffices%2Fwashington-dc.jpg%3Fh%3D350%26iar%3D0%26w%3D634&w=1080&q=75)
Washington DC
United States
+1 202 683 3800
1101 New York Avenue, NW 20005
![Frederick Douglass Memorial Bridge Washington DC](/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fallenoveryllp1-aoshearmanwe0db-production-ecf3%2Fmedia%2Fproject%2Faoshearman%2Faoshearman%2Foffices%2Fwashington-dc.jpg%3Fh%3D350%26iar%3D0%26w%3D634&w=1080&q=75)
Washington DC
United States
+1 202 508 8000
401 9th Street NW Suite 800 D.C. 20004
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