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 Otter.ai on $320 Million Growth Investment
On October 20, 2026, Otter.ai, the company behind the leading AI notetaker and conversational knowledge platform, announced $320 million in growth financing from General Catalyst's Customer Value Fund. Wilson Sonsini Goodrich & Rosati advised Otter.ai on the transaction.
Client Highlights
Wilson Sonsini Advises ElevenLabs on $300 Million Employee Tender Offer
On September 30, 2026, ElevenLabs, a voice technology research company, announced the closing of a $300 million employee tender offer that values the company at $22 billion, doubling its valuation at its Series D financing in February 2026. The tender offer was led by Wellington and T. Rowe Price, with participation from new investors BDT & MSD, EQT, GIC, Goldman Sachs, OTPP, and Sapphire Ventures, as well as existing investors including Alkeon, Andreessen Horowitz, D.E. Shaw, DISRUPTIVE, Evantic, ICONIQ, and Lightspeed. Wilson Sonsini Goodrich & Rosati advised Elevenlabs on the transaction.
Client Highlights
Wilson Sonsini Advises Tenstorrent on $1.5 Billion Series E Financing
On October 19, 2026, Tenstorrent, an artificial intelligence (AI) computing company, announced it has closed $1.5 billion in Series E funding at a $6.2 billion post-money valuation. The round was led by Trace Capital and Innovation X, with participation from new and existing investors including Agostinelli Group, ARK Invest, Brett Barna, Cadence Ventures, Eclipse, Fidelity Management & Research Company, Maverick Silicon, Morgan Stanley, Protagonist, Sandisk, T. Rowe Price, Tether Investments, Troluce Capital, Virtu Financial, and XTX Markets. Wilson Sonsini Goodrich & Rosati represented Tenstorrent on the transaction.
Blog Posts
Corp Fin Issues New and Revised CFIs on Use of Form S-8, Rule 701, and Form 4 Deadlines
The SEC’s Division of Corporation Finance recently published six new and two revised Corporation Finance Interpretations (CFIs) addressing the registration of stock underlying equity compensation awards and benefit plans. Collectively, the CFIs ease several longstanding staff positions on the timing of Form S-8 registration for restricted stock and restricted stock units, the treatment of awards assumed from acquired companies, and awards granted prior to an initial public offering.
Client Highlights
Firm Advises Alector on $75 Million Underwritten Offering
On October 16, 2026, Alector, a biotechnology company focused on developing therapies to counteract the devastating progression of neurodegeneration, announced the pricing of an underwritten offering of common stock. Alector is selling 36,600,000 shares of common stock at an offering price of $2.05 per share, which represents a premium of approximately 7.3 percent over the closing price on October 15, 2026. The gross proceeds to Alector from this offering are expected to be $75,030,000 before deducting the underwriting discounts and commissions and other estimated offering expenses. The financing includes participation from new and existing investors, including TCGX, BVF Partners, ADAR1 Capital Management, and Deep Track Capital, among others. Wilson Sonsini Goodrich & Rosati advised Alector on the transaction.
Client Highlights
Wilson Sonsini Advises Amaero on IPO
On October 14, 2026, Amaero, a leading U.S.-based producer of high-value refractory and titanium alloy spherical metal powders for additive manufacturing (AM) and advanced manufacturing, and a pioneer in Powder Metallurgy Hot Isostatic Pressing (PM-HIP) manufacturing of large near-net-shape components, announced the pricing of its initial public offering of 4,705,883 shares of its common stock at a price of $4.25 per share. Amaero has also granted the underwriters a 30-day option to purchase up to an additional 705,882 shares of its common stock at the initial public offering price, less underwriting discounts and commissions. Wilson Sonsini Goodrich & Rosati advised Amaero on the transaction.
Insights
Client Highlights
Wilson Sonsini Advises Otter.ai on $320 Million Growth Investment
On October 20, 2026, Otter.ai, the company behind the leading AI notetaker and conversational knowledge platform, announced $320 million in growth financing from General Catalyst's Customer Value Fund. Wilson Sonsini Goodrich & Rosati advised Otter.ai on the transaction.
Client Highlights
Wilson Sonsini Advises ElevenLabs on $300 Million Employee Tender Offer
On September 30, 2026, ElevenLabs, a voice technology research company, announced the closing of a $300 million employee tender offer that values the company at $22 billion, doubling its valuation at its Series D financing in February 2026. The tender offer was led by Wellington and T. Rowe Price, with participation from new investors BDT & MSD, EQT, GIC, Goldman Sachs, OTPP, and Sapphire Ventures, as well as existing investors including Alkeon, Andreessen Horowitz, D.E. Shaw, DISRUPTIVE, Evantic, ICONIQ, and Lightspeed. Wilson Sonsini Goodrich & Rosati advised Elevenlabs on the transaction.
Client Highlights
Wilson Sonsini Advises Tenstorrent on $1.5 Billion Series E Financing
On October 19, 2026, Tenstorrent, an artificial intelligence (AI) computing company, announced it has closed $1.5 billion in Series E funding at a $6.2 billion post-money valuation. The round was led by Trace Capital and Innovation X, with participation from new and existing investors including Agostinelli Group, ARK Invest, Brett Barna, Cadence Ventures, Eclipse, Fidelity Management & Research Company, Maverick Silicon, Morgan Stanley, Protagonist, Sandisk, T. Rowe Price, Tether Investments, Troluce Capital, Virtu Financial, and XTX Markets. Wilson Sonsini Goodrich & Rosati represented Tenstorrent on the transaction.
Blog Posts
Corp Fin Issues New and Revised CFIs on Use of Form S-8, Rule 701, and Form 4 Deadlines
The SEC’s Division of Corporation Finance recently published six new and two revised Corporation Finance Interpretations (CFIs) addressing the registration of stock underlying equity compensation awards and benefit plans. Collectively, the CFIs ease several longstanding staff positions on the timing of Form S-8 registration for restricted stock and restricted stock units, the treatment of awards assumed from acquired companies, and awards granted prior to an initial public offering.
Client Highlights
Firm Advises Alector on $75 Million Underwritten Offering
On October 16, 2026, Alector, a biotechnology company focused on developing therapies to counteract the devastating progression of neurodegeneration, announced the pricing of an underwritten offering of common stock. Alector is selling 36,600,000 shares of common stock at an offering price of $2.05 per share, which represents a premium of approximately 7.3 percent over the closing price on October 15, 2026. The gross proceeds to Alector from this offering are expected to be $75,030,000 before deducting the underwriting discounts and commissions and other estimated offering expenses. The financing includes participation from new and existing investors, including TCGX, BVF Partners, ADAR1 Capital Management, and Deep Track Capital, among others. Wilson Sonsini Goodrich & Rosati advised Alector on the transaction.
Client Highlights
Wilson Sonsini Advises Amaero on IPO
On October 14, 2026, Amaero, a leading U.S.-based producer of high-value refractory and titanium alloy spherical metal powders for additive manufacturing (AM) and advanced manufacturing, and a pioneer in Powder Metallurgy Hot Isostatic Pressing (PM-HIP) manufacturing of large near-net-shape components, announced the pricing of its initial public offering of 4,705,883 shares of its common stock at a price of $4.25 per share. Amaero has also granted the underwriters a 30-day option to purchase up to an additional 705,882 shares of its common stock at the initial public offering price, less underwriting discounts and commissions. Wilson Sonsini Goodrich & Rosati advised Amaero on the transaction.
Affiliated Programs
Behind the Raise: The Financial Journey for Life Science Founders
Wilson Sonsini is pleased to sponsor the University of San Diego Knauss School of Business Center for Applied Finance symposium, which will focus on the key considerations and strategies for raising capital in the early stages of building a life sciences company.
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
HLTH 2026
Wilson Sonsini will host multiple events during HLTH 2026 in Las Vegas. Please see below for details.
Digital Health Reception Sunday, November 15
7:00 - 10:00 p.m.
Digital Health Reception Sunday, November 15
7:00 - 10:00 p.m.
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.
Events
Affiliated Programs
Behind the Raise: The Financial Journey for Life Science Founders
Wilson Sonsini is pleased to sponsor the University of San Diego Knauss School of Business Center for Applied Finance symposium, which will focus on the key considerations and strategies for raising capital in the early stages of building a life sciences company.
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
HLTH 2026
Wilson Sonsini will host multiple events during HLTH 2026 in Las Vegas. Please see below for details.
Digital Health Reception Sunday, November 15
7:00 - 10:00 p.m.
Digital Health Reception Sunday, November 15
7:00 - 10:00 p.m.
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.
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 Otter.ai on $320 Million Growth Investment
On October 20, 2026, Otter.ai, the company behind the leading AI notetaker and conversational knowledge platform, announced $320 million in growth financing from General Catalyst's Customer Value Fund. Wilson Sonsini Goodrich & Rosati advised Otter.ai on the transaction.
Learn More
Client Highlights
Wilson Sonsini Advises ElevenLabs on $300 Million Employee Tender Offer
On September 30, 2026, ElevenLabs, a voice technology research company, announced the closing of a $300 million employee tender offer that values the company at $22 billion, doubling its valuation at its Series D financing in February 2026. The tender offer was led by Wellington and T. Rowe Price, with participation from new investors BDT & MSD, EQT, GIC, Goldman Sachs, OTPP, and Sapphire Ventures, as well as existing investors including Alkeon, Andreessen Horowitz, D.E. Shaw, DISRUPTIVE, Evantic, ICONIQ, and Lightspeed. Wilson Sonsini Goodrich & Rosati advised Elevenlabs on the transaction.
Learn More
Recent Events
Affiliated Programs
Behind the Raise: The Financial Journey for Life Science Founders
Wilson Sonsini is pleased to sponsor the University of San Diego Knauss School of Business Center for Applied Finance symposium, which will focus on the key considerations and strategies for raising capital in the early stages of building a life sciences company.
Learn More
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
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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