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San Francisco
One Market Plaza
Spear Tower, Suite 3300
San Francisco, CA 94105-1126
US

T415-947-2000

About Our San Francisco Office

Wilson Sonsini's main San Francisco office, which is located in the Spear Tower at One Market Street, is the base for a team of Bay Area attorneys that represent clients in corporate transactional, litigation, and regulatory matters.

The office's prime location in the heart of the Financial District helps our San Francisco attorneys stay close to some of the most innovative, game-changing companies, from fintech and clean energy start-ups to market-leading global companies, as well as the private equity and venture capital firms that finance them.

Attorneys in Wilson Sonsini's San Francisco office have represented hundreds of public and private companies in M&A transactions ranging in value from less than $100 million to more than $1 billion. Their experience includes public and private mergers and acquisitions, tender and exchange offers, asset acquisitions and dispositions, leveraged buyouts, management buyouts and other going-private transactions, corporate auctions, proxy contests and other contests for corporate control, and strategic partnering and joint venture arrangements.

Our attorneys also have expertise in IP and complex commercial litigation, including patent, copyright, and trade secret law. They have played leading roles in many of the most prominent corporate control and governance disputes in the Bay Area, and they maintain an active pro bono and public service practice as well.

Through the seamless integration of all Wilson Sonsini offices, we leverage the institutional experience and resources of the entire firm to provide high-quality services to clients. Our proprietary collaborative systems give our attorneys immediate access to the firm's collective expertise and knowledge, enabling them to respond quickly with effective solutions for our clients.

Get Directions
Transportation and Directions
For easy access to the firm's San Francisco office, visitors are advised to enter One Market Plaza from the middle of the block on Spear Street.

Bay Area Rapid Transit (BART) and Muni Metro

All BART and Muni train lines running through San Francisco stop at the Embarcadero Station. One Market Plaza is directly up the stairs from the station.

Muni Buses

If traveling on any of the Muni buses that run down Market Street, disembark at One Market Plaza on Market between Spear and Steuart Streets.
Parking
Parking is available for a fee at the following garages located near the office:

One Market Garage
(Enter on Spear Street)
One Market Plaza
415-777-2292

Rincon Center Garage
(Enter on Spear Street)
121 Spear Street
415-882-9468

Embarcadero Center Parking Garage
3 Embarcadero Center #A
415-772-0670
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On February 18, 2026, Heron Power, an energy infrastructure company, announced the closing of $140 million in Series B financing co-led by Andreessen Horowitz’s (a16z) American Dynamism Fund and Breakthrough Energy Ventures, with participation from existing investors Capricorn Investment Group, Energy Impact Partners, Valor Atreides AI Fund, and Gigascale Capital. Wilson Sonsini Goodrich & Rosati advised Heron Power on the transaction.
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On February 4, 2026, ElevenLabs announced that it has raised $500 million in a Series D financing round led by Sequoia Capital. Andreessen Horowitz and ICONIQ also participated in the investment along with new investors Lightspeed Venture Partners, Evantic Capital, and BOND. Wilson Sonsini Goodrich & Rosati advised ElevenLabs on the transaction.
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Newsletters
The Life Sciences Report – January 2026
This latest edition features articles on reasons for optimism around 2026 life sciences fundraising, key IP priorities for biotech and biopharma following Series B financing, the default rules of joint patent rights worldwide, the evolving role of innovation theories of harm in the antitrust analysis of life science mergers, life sciences venture financings for firm clients across 2H2024 and 1H2025, and how Wilson Sonsini helped ensure Light Horse Therapeutics’ impressive debut. The report also includes details on the most recent Biotech Summit and Phoenix Conference, the LaunchBio East Coast NextGen VC Forum, the latest episodes of the NextGen VC Podcast focused on life sciences investing, and the Patents and Innovations Library for in-house IP counsel, as well as select life sciences client highlights and upcoming events.
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Wilson Sonsini is pleased to present the Q3 2025 edition of The Entrepreneurs Report. We’ve compiled a range of data on venture, convertible note, and SAFE financing transactions in which the firm was involved during the third quarter, with the objective of identifying relevant trends in activity and valuation levels for the U.S. venture capital industry in general.
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On November 17, 2025,  Cloudflare, the leading connectivity cloud company, announced it has agreed to acquire Replicate, an AI platform that makes it easy for developers to deploy and run AI models. Wilson Sonsini Goodrich & Rosati advised Cloudflare on the transaction.
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Insider Trading Policies: A Survey of the SV150
Wilson Sonsini’s Insider Trading Policies: A Survey of the SV150 provides an in-depth analysis of the insider trading policies filed by Silicon Valley’s largest public companies. The report examines several key elements of these policies including persons subject to the policy, quarterly blackout periods, pre-clearance requirements, gifts, and restricted activities including hedging, pledging, and margin accounts.
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