Sidley Austin LLP is a preeminent global law firm with a rich history spanning over 150 years. The firm provides a broad spectrum of legal services to a diverse client base, including multinational corporations, financial institutions, emerging enterprises, and governmental bodies. Sidley is highly regarded for its formidable capabilities in litigation, transactional law (including M&A, private equity, and capital markets), and regulatory matters across various industries like life sciences, energy, and technology.
The Chicago headquarters serves as the nerve center for global operations, housing key administrative departments, senior firm leadership, and a substantial contingent of lawyers practicing across diverse legal disciplines.
Located within a modern skyscraper in Chicago's Loop district, the office boasts state-of-the-art facilities, advanced technological infrastructure, and impressive views of the city. The design emphasizes collaborative workspaces and client-centric amenities.
Sidley Austin's headquarters fosters a work culture that is intellectually rigorous, collaborative, and geared towards high performance. There is a strong emphasis on teamwork, mentorship, continuous professional development, and an unwavering commitment to client service and legal excellence.
As the firm's founding office, the Chicago headquarters symbolizes Sidley Austin's deep historical roots and its evolution from a local practice to a global legal powerhouse. It remains a cornerstone of the firm's identity and strategic operations.
Sidley Austin provides comprehensive legal support across the globe. Key functions include complex transactional work (M&A, private equity, capital markets), high-stakes litigation and international arbitration, regulatory counseling across diverse industries (such as financial services, life sciences, energy, and technology), intellectual property protection and litigation, international trade, and corporate restructuring. The firm's integrated global network ensures seamless, high-quality service for multinational clients wherever they operate.
One South Dearborn Street
Chicago
Illinois
USA
Address: 787 Seventh Avenue, New York, NY 10019
Serves as a critical center for U.S. East Coast operations and a primary conduit for international business, linking clients to Sidley's extensive global network.
Address: 70 St Mary Axe, London EC3A 8BE, United Kingdom
Functions as a major hub for EMEA (Europe, Middle East, and Africa) activities, facilitating complex cross-border transactions and international arbitration for a global clientele.
Address: Level 39, Two International Finance Centre, 8 Finance Street, Central, Hong Kong
Acts as a strategic base for clients operating in Greater China and the broader Asia-Pacific, navigating the unique legal and commercial landscapes of the region.
Address: 555 West Fifth Street, Suite 4000, Los Angeles, CA 90013
Supports clients throughout California and the Pacific Rim, combining deep local market insight with the firm's global resources and expertise.
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As of April 2025, Sidley Austin LLP' leadership includes:
Sidley Austin LLP has been backed by several prominent investors over the years, including:
In the past year, a key leadership transition at Sidley Austin involved Michael J. Schmidtberger assuming the role of Chair of the firm's Executive Committee. While C-suite level changes are infrequent, the firm continuously strengthens its senior leadership through strategic partner promotions and lateral hires into global practice leadership and committee roles.
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Sidley Austin typically utilizes an email format that combines the first initial of an employee's first name with their full last name, followed by the @sidley.com domain. This is a common and generally reliable format for contacting individuals at the firm.
flast@sidley.com
Format
jsmith@sidley.com
Example
90%
Success rate
Sidley Austin Press Release • May 13, 2024
Sidley Austin announced the addition of Heather Palmer as a partner in its Houston office. Palmer joins the firm's prominent Energy and Infrastructure practice, significantly bolstering its capabilities in complex energy transactions....more
Sidley Austin Press Release • April 30, 2024
A Sidley Austin team advised the buyers in their acquisition of Coherent Corp.'s detector business for approximately US$20 million. This transaction highlights the firm's M&A expertise within the technology sector....more
Sidley Austin Press Release • March 28, 2024
Sidley Austin received four prestigious awards at The M&A Advisor’s 18th Annual Turnaround Awards. These accolades recognize the firm's outstanding achievements and excellence in restructuring and distressed M&A transactions....more
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