Corporate
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A Leader in Venture Financings
Wilson Sonsini is ranked as the No. 1 law firm in the U.S. and globally based on the number of company-side venture financing rounds raised for clients in 2025. (Source: LSEG Global Legal Private Equity and Venture Capital Review, Full Year 2025)
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Ranked Among the Top Capital Markets Advisors to Companies and Underwriters
We are consistently ranked by Bloomberg, Thomson Reuters, and CapitalIQ as a leading advisor to companies and underwriters based on the number of completed IPOs and equity and equity-linked offerings. Over the past 20 years, the firm has represented some of the world’s most iconic companies in such transactions, including Google, LinkedIn, Twitter, and Lyft.
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Advise on Hundreds of M&A Deals Annually
In 2025, Wilson Sonsini advised on more than 150 announced and/or completed M&A deals with an aggregate disclosed value of $100 billion.
Wilson Sonsini Goodrich & Rosati is the premier legal advisor to technology, life sciences, and growth enterprises worldwide, as well as the venture firms, private equity firms, and investment banks that finance them. We represent companies at every stage of development, from entrepreneurial start-ups to multibillion-dollar global corporations. The firm's attorneys collaborate across a comprehensive range of practice areas and industry groups to help the management, boards of directors, shareholders, and in-house counsel of our clients address their most pressing challenges and pursue their most promising opportunities.
Wilson Sonsini is nationally recognized for providing high-quality services to address the legal solutions required by its enterprise and financial institution clients. Our services include corporate law and governance, public and private offerings of equity and debt securities, mergers and acquisitions, joint ventures and strategic alliances, technology licensing and other intellectual property transactions, tax, employee benefits, and other corporate transactional areas.
Our clients are companies and other entities that compete in rapidly developing and innovative industries, including the biotech, communications, digital media, energy, financial services, medical devices, and software sectors.
Overview
Wilson Sonsini Goodrich & Rosati is the premier legal advisor to technology, life sciences, and growth enterprises worldwide, as well as the venture firms, private equity firms, and investment banks that finance them. We represent companies at every stage of development, from entrepreneurial start-ups to multibillion-dollar global corporations. The firm's attorneys collaborate across a comprehensive range of practice areas and industry groups to help the management, boards of directors, shareholders, and in-house counsel of our clients address their most pressing challenges and pursue their most promising opportunities.
Wilson Sonsini is nationally recognized for providing high-quality services to address the legal solutions required by its enterprise and financial institution clients. Our services include corporate law and governance, public and private offerings of equity and debt securities, mergers and acquisitions, joint ventures and strategic alliances, technology licensing and other intellectual property transactions, tax, employee benefits, and other corporate transactional areas.
Our clients are companies and other entities that compete in rapidly developing and innovative industries, including the biotech, communications, digital media, energy, financial services, medical devices, and software sectors.
Client Highlights
Wilson Sonsini Advises Foundational on £8.2 Million Pre-Seed Financing
On October 1, 2026, Foundational, a London-based space technology company, announced it has emerged from stealth with £8.2 million in pre-seed financing to automate and scale Satellite Laser Ranging (SLR), the technique that pins down the position of satellites and debris to millimeter precision. Participants in the round include BACKED, Final Frontier, Adjacent, Type One Ventures, and Inflection. Wilson Sonsini Goodrich & Rosati is advising Foundational on the transaction.
Client Highlights
Wilson Sonsini Advises Stripe on Acquisition of Parafin
On September 30, 2026, Stripe, the programmable financial services company, announced that it has agreed to acquire Parafin, a leading embedded financial products platform. Wilson Sonsini Goodrich & Rosati is advising Stripe on the transaction.
Client Highlights
Firm Advises Kanu AI on $11.7 Million Seed Funding
On September 30, 2026, Kanu AI, a platform that turns everyday employee tasks into custom software for enterprises, announced $11.7 million in funding led by Trilogy Equity Partners, with participation from a16z speedrun, BMW i Ventures, and Accel. Wilson Sonsini Goodrich & Rosati advised Kanu AI on the transaction.
Client Highlights
Wilson Sonsini Advises Proximal on $15 Million Seed Round as it Emerges from Stealth
On September 29, 2026, Proximal, a research lab focused on data, launched out of stealth, raising $15 million in seed funding led by General Catalyst. Chemistry, SV Angel, and other investors joined the round. Wilson Sonsini Goodrich & Rosati advised Proximal on the transaction.
Client Highlights
Wilson Sonsini Advises Zenithon AI on $10 Million Seed Financing
On September 30, 2026, Zenithon AI, a London-based AI start-up developing world models for extreme physics applications, including fusion energy, rocketry, and semiconductor manufacturing, announced a $10 million seed financing led by Backed VC, Lunar Ventures, Seraphim Space, MMC Ventures, and SOSV. Several angel investors also participated in the round. Wilson Sonsini Goodrich & Rosati advised Zenithon AI on the transaction.
Client Highlights
Wilson Sonsini Advises World Labs on $8.2 Billion Acquisition by AMD
On September 28, 2026, AMD, a global semiconductor company, announced it has entered into a definitive agreement to acquire World Labs, an AI model and research lab led by AI pioneer Dr. Fei-Fei Li. The acquisition will bring a world-class team of researchers and model experts to AMD, strengthening its ability to develop AI hardware, software, and systems. Wilson Sonsini Goodrich & Rosati is advising World Labs on the transaction.
Insights
Client Highlights
Wilson Sonsini Advises Foundational on £8.2 Million Pre-Seed Financing
On October 1, 2026, Foundational, a London-based space technology company, announced it has emerged from stealth with £8.2 million in pre-seed financing to automate and scale Satellite Laser Ranging (SLR), the technique that pins down the position of satellites and debris to millimeter precision. Participants in the round include BACKED, Final Frontier, Adjacent, Type One Ventures, and Inflection. Wilson Sonsini Goodrich & Rosati is advising Foundational on the transaction.
Client Highlights
Wilson Sonsini Advises Stripe on Acquisition of Parafin
On September 30, 2026, Stripe, the programmable financial services company, announced that it has agreed to acquire Parafin, a leading embedded financial products platform. Wilson Sonsini Goodrich & Rosati is advising Stripe on the transaction.
Client Highlights
Firm Advises Kanu AI on $11.7 Million Seed Funding
On September 30, 2026, Kanu AI, a platform that turns everyday employee tasks into custom software for enterprises, announced $11.7 million in funding led by Trilogy Equity Partners, with participation from a16z speedrun, BMW i Ventures, and Accel. Wilson Sonsini Goodrich & Rosati advised Kanu AI on the transaction.
Client Highlights
Wilson Sonsini Advises Proximal on $15 Million Seed Round as it Emerges from Stealth
On September 29, 2026, Proximal, a research lab focused on data, launched out of stealth, raising $15 million in seed funding led by General Catalyst. Chemistry, SV Angel, and other investors joined the round. Wilson Sonsini Goodrich & Rosati advised Proximal on the transaction.
Client Highlights
Wilson Sonsini Advises Zenithon AI on $10 Million Seed Financing
On September 30, 2026, Zenithon AI, a London-based AI start-up developing world models for extreme physics applications, including fusion energy, rocketry, and semiconductor manufacturing, announced a $10 million seed financing led by Backed VC, Lunar Ventures, Seraphim Space, MMC Ventures, and SOSV. Several angel investors also participated in the round. Wilson Sonsini Goodrich & Rosati advised Zenithon AI on the transaction.
Client Highlights
Wilson Sonsini Advises World Labs on $8.2 Billion Acquisition by AMD
On September 28, 2026, AMD, a global semiconductor company, announced it has entered into a definitive agreement to acquire World Labs, an AI model and research lab led by AI pioneer Dr. Fei-Fei Li. The acquisition will bring a world-class team of researchers and model experts to AMD, strengthening its ability to develop AI hardware, software, and systems. Wilson Sonsini Goodrich & Rosati is advising World Labs on the transaction.
Speaking Engagements
PLI's Tax Strategies for Corporate Acquisitions, Dispositions, Spin-Offs, Joint Ventures, Financings, Reorganizations & Restructurings 2026
Practising Law Institute (PLI) features specialized sessions on tax strategies for financially troubled businesses within its premier annual conference series on Tax Strategies for Corporate Acquisitions, Dispositions, Spin-Offs, Joint Ventures, Financings, Reorganizations & Restructurings. These programs focus on navigating net operating losses (NOLs), debt restructurings, and corporate distress under complex federal tax rules.
Affiliated Programs
Techstars Space: Aerospace & Defense Industry Mixer
Join us in the DMV for the Techstars Space 2026 Aerospace & Defense Industry Mixer, designed to bring together the Techstars community, and connect corporations and investors with the future of the aerospace industry. Engage with the brightest minds from the latest Techstars Space cohort.
Affiliated Programs
The 42nd Annual TEI-SJSU High Tech Tax Institute
Wilson Sonsini is proud to sponsor the annual TEI-SJSU High Tech Tax Institute, a two-day conference held every November. The 42nd Annual Institute offers a deep dive into key tax topics relevant to high tech companies. This in-person event is designed for tax pros from corporate tax departments, CPA and law firms, the IRS, and state tax agencies who deal with high tech businesses. This year's topics include recent guidance and strategies related to significant technology M&A transactions and best M&A tax practices. Wilson Sonsini partner Myra Sutanto Shen will speak on the latest in M&A technology strategies, data centers, and more.
Affiliated Programs
2026 Women in Law & Leadership Summit: West
Jamillia Ferris, co-chair of Wilson Sonsini’s Antitrust and Competition practice, joins the "From Token to Trailblazer: Building Enduring Power for Women in Leadership" panel at the Women in Law & Leadership Summit: West, alongside fellow senior women leaders from Block, Optum, HPE, and private practice.
Speaking Engagements
Built Locally, Scaling Globally: The Essential Guide to Expanding and Scaling in the U.S.
Join us at NatWest Accelerator in Birmingham for an expert panel exploring the key considerations for businesses looking to expand into the U.S. We’ll explore the practical realities of entering and scaling in the American market, covering everything from market entry strategies and accessing venture capital to immigration routes, setting up a U.S. entity, and navigating the legal, tax, and compliance requirements of operating in the U.S.
Affiliated Programs
Swedish Chamber of Commerce's Nordic Venture Capital Reception
Join Wilson Sonsini and The Swedish Chamber of Commerce for the Nordic Venture Capital Reception – an intimate evening of peer-level conversation -- with a curated agenda on the themes shaping venture today -- and plenty of time to connect.
Events
Speaking Engagements
PLI's Tax Strategies for Corporate Acquisitions, Dispositions, Spin-Offs, Joint Ventures, Financings, Reorganizations & Restructurings 2026
Practising Law Institute (PLI) features specialized sessions on tax strategies for financially troubled businesses within its premier annual conference series on Tax Strategies for Corporate Acquisitions, Dispositions, Spin-Offs, Joint Ventures, Financings, Reorganizations & Restructurings. These programs focus on navigating net operating losses (NOLs), debt restructurings, and corporate distress under complex federal tax rules.
Affiliated Programs
Techstars Space: Aerospace & Defense Industry Mixer
Join us in the DMV for the Techstars Space 2026 Aerospace & Defense Industry Mixer, designed to bring together the Techstars community, and connect corporations and investors with the future of the aerospace industry. Engage with the brightest minds from the latest Techstars Space cohort.
Affiliated Programs
The 42nd Annual TEI-SJSU High Tech Tax Institute
Wilson Sonsini is proud to sponsor the annual TEI-SJSU High Tech Tax Institute, a two-day conference held every November. The 42nd Annual Institute offers a deep dive into key tax topics relevant to high tech companies. This in-person event is designed for tax pros from corporate tax departments, CPA and law firms, the IRS, and state tax agencies who deal with high tech businesses. This year's topics include recent guidance and strategies related to significant technology M&A transactions and best M&A tax practices. Wilson Sonsini partner Myra Sutanto Shen will speak on the latest in M&A technology strategies, data centers, and more.
Affiliated Programs
2026 Women in Law & Leadership Summit: West
Jamillia Ferris, co-chair of Wilson Sonsini’s Antitrust and Competition practice, joins the "From Token to Trailblazer: Building Enduring Power for Women in Leadership" panel at the Women in Law & Leadership Summit: West, alongside fellow senior women leaders from Block, Optum, HPE, and private practice.
Speaking Engagements
Built Locally, Scaling Globally: The Essential Guide to Expanding and Scaling in the U.S.
Join us at NatWest Accelerator in Birmingham for an expert panel exploring the key considerations for businesses looking to expand into the U.S. We’ll explore the practical realities of entering and scaling in the American market, covering everything from market entry strategies and accessing venture capital to immigration routes, setting up a U.S. entity, and navigating the legal, tax, and compliance requirements of operating in the U.S.
Affiliated Programs
Swedish Chamber of Commerce's Nordic Venture Capital Reception
Join Wilson Sonsini and The Swedish Chamber of Commerce for the Nordic Venture Capital Reception – an intimate evening of peer-level conversation -- with a curated agenda on the themes shaping venture today -- and plenty of time to connect.
Lester Ang
Partner
Lester Ang is a corporate and securities partner in the Palo Alto office of Wilson Sonsini, where he works with private and public technology and life sciences companies through all stages of their growth, as well as with venture capital firms and private equity firms.
Brian Appel
Partner
Brian Appel is a partner in the Palo Alto office of Wilson Sonsini Goodrich & Rosati, where he practices corporate and securities law. He advises companies on general corporate matters, including formation and operation, corporate governance, debt and equity financings, mergers and acquisitions, and securities-related matters. He has assisted early-stage companies in numerous capital-raising transactions, including venture capital financings.
Mark Bass
Partner
Mark Bass is a partner in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where he works with public and private technology companies at all stages of growth. He also represents venture capital funds, private equity firms, and investment banks in financings and public offerings.
Mark B. Baudler
Partner
Mark is a corporate law veteran, having advised start-ups and mature public companies for more than 25 years.
Steven V. Bernard
Partner
Steve has represented non-U.S. and domestic companies in U.S. IPOs, global securities offerings, cross-border M&A, and SEC compliance for more than 25 years.
Ashmi Bhagani
Partner
Ashmi Bhagani is a partner in the London office of Wilson Sonsini Goodrich & Rosati, where she has a diverse transatlantic corporate and securities practice focused on the technology and life sciences sectors.
Richard C. Blake
Partner
Richard has a comprehensive corporate law background, with extensive experience in public offerings.
Lance E. Brady
Partner
Lance Brady is a partner in Wilson Sonsini Goodrich & Rosati's Palo Alto office, where his practice focuses on representing public and private life sciences and technology companies through all stages of their growth. Lance advises his clients on a broad variety of transactions and corporate matters, including initial formation and organization, equity and debt financings, mergers and acquisitions, public offerings, spin-outs, corporate governance, SEC compliance and public company reporting requirements. He also has extensive experience representing venture capital and other institutional investors in financing transactions.
Jason Breen
Partner
Jason Breen is a partner in the Los Angeles office of Wilson Sonsini Goodrich & Rosati, where he represents public and private companies at all stages of growth in M&A transactions, primarily working with clients in the life sciences and technology industries. Jason also represents venture capital, growth equity, and private equity funds and focuses on other strategic transactions, including divestitures, joint ventures, and financings.
Tamara Brightwell
Partner
Tamara Brightwell is a corporate partner in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where she counsels public company clients on a wide range of regulatory matters and provides securities law advice on complex capital markets transactions.
People
Lester Ang
Partner
Lester Ang is a corporate and securities partner in the Palo Alto office of Wilson Sonsini, where he works with private and public technology and life sciences companies through all stages of their growth, as well as with venture capital firms and private equity firms.
Brian Appel
Partner
Brian Appel is a partner in the Palo Alto office of Wilson Sonsini Goodrich & Rosati, where he practices corporate and securities law. He advises companies on general corporate matters, including formation and operation, corporate governance, debt and equity financings, mergers and acquisitions, and securities-related matters. He has assisted early-stage companies in numerous capital-raising transactions, including venture capital financings.
Mark Bass
Partner
Mark Bass is a partner in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where he works with public and private technology companies at all stages of growth. He also represents venture capital funds, private equity firms, and investment banks in financings and public offerings.
Mark B. Baudler
Partner
Mark is a corporate law veteran, having advised start-ups and mature public companies for more than 25 years.
Steven V. Bernard
Partner
Steve has represented non-U.S. and domestic companies in U.S. IPOs, global securities offerings, cross-border M&A, and SEC compliance for more than 25 years.
Ashmi Bhagani
Partner
Ashmi Bhagani is a partner in the London office of Wilson Sonsini Goodrich & Rosati, where she has a diverse transatlantic corporate and securities practice focused on the technology and life sciences sectors.
Richard C. Blake
Partner
Richard has a comprehensive corporate law background, with extensive experience in public offerings.
Lance E. Brady
Partner
Lance Brady is a partner in Wilson Sonsini Goodrich & Rosati's Palo Alto office, where his practice focuses on representing public and private life sciences and technology companies through all stages of their growth. Lance advises his clients on a broad variety of transactions and corporate matters, including initial formation and organization, equity and debt financings, mergers and acquisitions, public offerings, spin-outs, corporate governance, SEC compliance and public company reporting requirements. He also has extensive experience representing venture capital and other institutional investors in financing transactions.
Jason Breen
Partner
Jason Breen is a partner in the Los Angeles office of Wilson Sonsini Goodrich & Rosati, where he represents public and private companies at all stages of growth in M&A transactions, primarily working with clients in the life sciences and technology industries. Jason also represents venture capital, growth equity, and private equity funds and focuses on other strategic transactions, including divestitures, joint ventures, and financings.
Tamara Brightwell
Partner
Tamara Brightwell is a corporate partner in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where she counsels public company clients on a wide range of regulatory matters and provides securities law advice on complex capital markets transactions.
Related Practices
- Capital Markets
- Corporate Governance
- Corporate Life Sciences
- Emerging Companies and Venture Capital
- Employee Benefits and Compensation
- Energy and Climate Solutions
- Finance and Structured Finance
- Fund Formation
- Greater China
- Life Sciences Business Advisory Practice
- Mergers & Acquisitions
- Private Equity
- Public Company Representation
- Real Estate
- Restructuring
- Shareholder Engagement and Activism
- Special Purpose Acquisition Companies (SPACs)
- Tax
- U.S. Expansion
Recent Insights
Client Highlights
Wilson Sonsini Advises Foundational on £8.2 Million Pre-Seed Financing
On October 1, 2026, Foundational, a London-based space technology company, announced it has emerged from stealth with £8.2 million in pre-seed financing to automate and scale Satellite Laser Ranging (SLR), the technique that pins down the position of satellites and debris to millimeter precision. Participants in the round include BACKED, Final Frontier, Adjacent, Type One Ventures, and Inflection. Wilson Sonsini Goodrich & Rosati is advising Foundational on the transaction.
Learn More
Client Highlights
Wilson Sonsini Advises Stripe on Acquisition of Parafin
On September 30, 2026, Stripe, the programmable financial services company, announced that it has agreed to acquire Parafin, a leading embedded financial products platform. Wilson Sonsini Goodrich & Rosati is advising Stripe on the transaction.
Learn More
Recent Events
Speaking Engagements
PLI's Tax Strategies for Corporate Acquisitions, Dispositions, Spin-Offs, Joint Ventures, Financings, Reorganizations & Restructurings 2026
Practising Law Institute (PLI) features specialized sessions on tax strategies for financially troubled businesses within its premier annual conference series on Tax Strategies for Corporate Acquisitions, Dispositions, Spin-Offs, Joint Ventures, Financings, Reorganizations & Restructurings. These programs focus on navigating net operating losses (NOLs), debt restructurings, and corporate distress under complex federal tax rules.
Learn More
Affiliated Programs
Techstars Space: Aerospace & Defense Industry Mixer
Join us in the DMV for the Techstars Space 2026 Aerospace & Defense Industry Mixer, designed to bring together the Techstars community, and connect corporations and investors with the future of the aerospace industry. Engage with the brightest minds from the latest Techstars Space cohort.
Learn More
Newsletters
2024 Mid-Year Technology and Life Sciences PIPE and RDO Report
Wilson Sonsini Goodrich & Rosati is pleased to present the 2024 Mid-Year Technology and Life Sciences PIPE and RDO Report, analyzing 124 private investments in public equity (PIPEs) and registered direct offerings (RDOs) by U.S.-based tech and life science companies between January 1 and June 30, 2024.
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