Where is Sidley headquartered?

Sidley is headquartered in Chicago, IL.

What is the size of Sidley?

Sidley total number of employees/professionals is 4,862.

What service provider type is Sidley?

Sidley's service provider type is Law Firm.

What companies has Sidley invested in or acquired?

Sidley has invested in or acquired Airee .

What are Sidley subsidiaries?

Sidley Austin Master Pension Trust is a subsidiary of Sidley.

Sidley Company Profile: Service Breakdown & Team

Sidley Overview

Service

Law Firm

Year Founded

1866

Employees

4,862

Serviced Companies

1,175

Serviced Deals

1,356

Serviced Investors

1,070

Sidley General Information

Description

Founded in 1866, Sidley Austin is a global law firm headquartered in Chicago, Illinois. The firm provides services in the areas of litigation, antitrust, criminal defence, patent, intellectual property, product liability, international commercial arbitration, dispute resolution, mergers, acquisitions, private equity, venture capital, bankruptcy, insurance, data security, project finance, infrastructure, securities, taxation, trusts, and international trade. The firm caters to various industries including, energy, agribusiness, financial services, real estate, investment funds, life sciences, and technology.

Contact Information

Website

www.sidley.com

Formerly Known As

Sidley Austin Brown & Wood

Year Founded

1866

Service Provider Type

Law Firm

Corporate Office

One South Dearborn
Chicago, IL 60603
United States

+1 (312)

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Sidley Services to Companies

Service on a Deal (1,356)

Sidley has provided services on 1356 deals. It last acted as a legal advisor to Aspen Insurance Holdings on a made for . The deal was made in 2025.

Company Name	Service Provided	Deal Date
Aspen Insurance Holdings	Legal Advisor	May 2025
Beacon Roofing Supply	Legal Advisor	Apr 2025
Bagel	Legal Advisor	Apr 2025
Nourish	Legal Advisor	Apr 2025
Marvel Fusion	Legal Advisor	Mar 2025
W.R. Berkley	Legal Advisor	Mar 2025
3650 Capital	Legal Advisor	Mar 2025
Supira Medical	Legal Advisor	Mar 2025
Plenty	Legal Advisor	Mar 2025
Opus Genetics	Legal Advisor	Mar 2025

You’re viewing 10 of 1,356 services to companies. Get the full list »

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Sidley Services to Investors

Service on a Deal — Buy Side (2,135)

Sidley has provided buy side services on 2135 deals. It last acted as a legal advisor to Cantilever Group on a . The deal was made in 2025.

Investor Name	Service Provided	Deal Date
Cantilever Group	Legal Advisor	May 2025
Lineage	Legal Advisor	Apr 2025
United Airlines Ventures	Legal Advisor	Apr 2025
U. S. Energy	Legal Advisor	Apr 2025
Ridgeview Partners	Legal Advisor	Apr 2025
8VC	Legal Advisor	Apr 2025
Bradford Airport Logistics	Legal Advisor	Apr 2025
Cal-Maine Foods	Legal Advisor	Apr 2025
Welltower	Legal Advisor	Apr 2025
Achieve Together	Legal Advisor	Mar 2025

You’re viewing 10 of 2,135 services on a deal — buy side. Get the full list »

Service on a Deal — Sell Side (400)

Sidley has provided sell side services on 400 deals. It last acted as a legal advisor to Whiptail Midstream on a made for . The deal was made in 2025.

Investor Name	Service Provided	Deal Date
Whiptail Midstream	Legal Advisor	May 2025
Admiral Group	Legal Advisor	Apr 2025
D1 Capital Partners	Legal Advisor	Apr 2025
Arsenal Capital Partners	Legal Advisor	Apr 2025
United Airlines Holdings	Legal Advisor	Apr 2025
Apollo Global Management	Legal Advisor	Mar 2025
The Cigna Group	Legal Advisor	Mar 2025
The Cigna Group	Legal Advisor	Mar 2025
Castle Creek Capital	Legal Advisor	Feb 2025
Outrigger Energy	Legal Advisor	Feb 2025

You’re viewing 10 of 400 services on a deal — sell side. Get the full list »

Sidley Investment Preferences

Preferred Industries	Preferred Verticals	Preferred Deal Types	Geographic Preferences	Transaction Amount

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