Sidley Austin LLP

Firm Profile

Rankings

UK

Awarded leading firm in UK 2026

Chambers and Partners

Ranked Departments:

Chambers and Partners

Ranked Individuals:

Overview

Provided by Sidley Austin LLP

Chair of Executive Committee: Brian J. Fahrney

Chair of Management Committee: Yvette Ostolaza

London Managing Partner: Thomas Thesing

Number of partners worldwide: Over 650

Number of lawyers worldwide: 2,300

Sidley is an elite global law firm with US$3.1 billion in revenue powered by lawyers who practice at the highest level of the profession. Backed by 158 years of experience, we deliver superior service to a high-caliber group of market-leading clients worldwide, while placing a premium on collaboration and diversity.

Our firm boasts a roster of 2,300 lawyers who wield deep experience in litigation, transactional, and regulatory matters spanning over 50 legal disciplines and industries.

With 22 offices, including our new Miami office, situated in major commercial and financial capitals around the world, our lawyers possess the cultural awareness and legal acumen needed to advise clients in today’s global economy. Follow Sidley on Twitter@SidleyLaw.

PRINCIPAL AREAS OF WORK

  • Banking & Financial Services Regulatory
  • Capital Markets
  • Competition/Antitrust
  • Dispute Resolution
  • Finance
  • Insurance
  • Investment Funds
  • Life Sciences
  • M&A & Private Equity
  • Privacy & Cybersecurity
  • Restructuring
  • Tax

Sidley and Sidley Austin refers to Sidley Austin LLP and affiliated partnerships as explained at www.sidley.com/disclaimer.

Ranked Offices

Provided by Sidley Austin LLP

Address (A-Z)

USA - Head office

Illinois

One South Dearborn , Chicago, Illinois, USA, IL 60603, Chicago

www.sidley.com

+1 312 853 7000

UK

Greater London

70 ST MARY AXE , London, Greater London, UK, EC3A 8BE, London

Chambers Laurel

Ranked Departments

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Chambers Laurel

Ranked Individuals

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Contributions

Latest contributions provided by Sidley Austin LLP

Global Practice Guide
Andrew Shoyer
Sven De Knop
Todd Friedbacher
Christopher Lock
Authored by
Andrew Shoyer, Sven De Knop, Todd Friedbacher, Christopher Lock
Article • Dec 2025
Global Practice Guide
Elizabeth Shea Fries
Authored by
Elizabeth Shea Fries
Article • Sep 2025
Global Practice Guide
Evan Grosch
Ram Sachs
Kai Liekefett
Derek Zaba
Authored by
Evan Grosch, Ram Sachs, Kai Liekefett, Derek Zaba
Article • Sep 2025

All contributions provided by Sidley Austin LLP

Sort by - Most recent
Title and authorsContent typePublication dateMedia type
Private Equity 2025 | USA – California | Trends and Developments
Authored by: Nicolai Schwarz-Gondek, Payom Pirahesh, Vijay Sekhon, Mehdi Khodadad
Global Practice Guide Aug 2025 Article
Private Equity 2025 | USA | Law and Practice
Authored by: John Godfrey, Justin Macke, Brien Wassner, Vijay Sekhon
Global Practice Guide Aug 2025 Article
Cybersecurity 2025 | UK | Trends and Developments
Authored by: Eleanor Dodding, Anila Rayani, Francesca Blythe, William Long
Global Practice Guide Feb 2025 Article
Cybersecurity 2025 | UK | Law and Practice
Authored by: Francesca Blythe, Anila Rayani, Eleanor Dodding, William Long
Global Practice Guide Feb 2025 Article

Sidley Austin LLP