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Sidley Moves to New 52,755 s/f Office in Iconic San Francisco Tower at 101 California Street

February 2, 2026

The two floor, 52,755 square-foot space marks the firm’s continued commitment to the San Francisco market

San Francisco – Sidley, a 160-year-old elite US$3.7 billion global law firm with 21 offices across four continents, including five California offices, is pleased to announce the opening of its new 52,755 square foot San Francisco office located at 101 California Street, one of the city’s marquee properties and just blocks away from the Embarcadero and San Francisco’s waterfront. The new office, spanning two floors, underscores Sidley’s continued investment in Northern California and its long-term commitment to clients in the region.

“Sidley is committed to San Francisco and the Bay Area, and our new office and long-term lease shows that commitment,” said Yvette Ostolaza, Sidley's Management Committee Chair. “San Francisco is a strategically important office for us given the top talent base and innovative industries in the Bay Area that we want to serve and help grow.”

Established in 1971, Sidley’s office in San Francisco has grown to over 110 lawyers and business professionals. The full service office serves nearly 2,300 clients on more than 6,000 matters across transactional, litigation and regulatory practices with a focus on key growth industries, including technology, AI and life sciences.

“The San Francisco office embodies Sidley’s culture of excellence and teamwork and supports our long-term strategic growth in Northern California,” said Sharon Flanagan, managing partner of the firm’s San Francisco office and a member of the firm’s Management Committee and Executive Committee. “The new San Francisco office, along with our vibrant office in Palo Alto, allow us to be centrally located in this key hub for tech, AI, and life sciences.”

Sidley’s new workplace is designed to foster collaboration and a deeper connection with clients and the community. Key features include:

  • Abundant natural light, with the many glass walls and windows providing an infusion of natural light.
  • A café on the perimeter of the office that allows the entire office and clients to enjoy the worldclass San Francisco Bay views.
  • A design with a warm color palette and natural materials like stone and wood, to create an inviting, hospitality atmosphere.
  • Open areas that allow for collaboration among teams of lawyer and business professionals.
  • Large modular conference rooms to accommodate large client meetings and gatherings.

Sidley occupies floors 34 through 35 of 101 California Street, a newly renovated 48-story cylindrical glass and granite LEED-certified tower.

Sidley’s office in San Francisco maintains a significant pro bono practice, handling matters including applications for political asylum, criminal appeals, human rights issues, habeas corpus petitions and veterans’ health benefits. In addition, the office proudly supports Stanford Law’s Science and Technology Lab, Stanford’s Rock Center for Corporate Governance, and Berkeley’s Center for Law and Technology.

The office helps innovation-driven clients succeed in the increasingly competitive marketplace. Partners comprise market-leading practitioners across the range of core disciplines important to companies in the region, working closely with the rest of Sidley’s 21 global offices to serve clients in transactional, litigation, regulatory, and restructuring matters wherever opportunity arises.

Sidley is an elite global law firm. With approximately 2,300 lawyers and 160 years of experience, we have established a reputation for deploying innovative legal strategies to achieve powerful results for our clients in complex transactional, restructuring, crisis management, investigation, regulatory, and litigation matters.

Our perspective and reach are truly global, supported by 21 offices strategically situated in key commercial, regulatory, and financial centers across the world. Our lawyers and business professionals, fluent in more than 75 languages, possess the cultural awareness and cross-border legal acumen needed to bring clarity to a dynamic business landscape.

Attorney Advertising—Sidley Austin LLP is a global law firm. Our addresses and contact information can be found at www.sidley.com/en/locations/offices. Sidley and Sidley Austin refer to Sidley Austin LLP and affiliated partnerships as explained at www.sidley.com/disclaimer.

Media Contact

Matt MessingerDirector, Public Relations+1 312 456 4009 (Global)