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Kassandra K. Castillo
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Partner
Corporate
San Diego

D858-350-2271

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Kassandra K. Castillo practices corporate and securities law in the San Diego office of Wilson Sonsini Goodrich & Rosati, where she serves as outside general counsel and advises life sciences and technology companies at all stages of development. She works closely with entrepreneurs to counsel them through initial company formation issues, day-to-day corporate governance matters, venture capital financing transactions, and liquidity events. She also counsels venture capital funds on structuring and executing investment transactions and managing their existing portfolio companies.

Experience

Kassandra K. Castillo practices corporate and securities law in the San Diego office of Wilson Sonsini Goodrich & Rosati, where she serves as outside general counsel and advises life sciences and technology companies at all stages of development. She works closely with entrepreneurs to counsel them through initial company formation issues, day-to-day corporate governance matters, venture capital financing transactions, and liquidity events. She also counsels venture capital funds on structuring and executing investment transactions and managing their existing portfolio companies.

Focus Areas
Recent Insights
Client Highlights
Wilson Sonsini Advises Novo Holdings and F-Prime Capital on AvenCell’s $112 Million Series B
On October 22, 2024, AvenCell Therapeutics, a leading clinical-stage cell therapy company focused on advancing both autologous and allogeneic switchable CAR-T cell therapies, announced that it has raised $112 million in Series B financing. The financing was led by global life sciences investor Novo Holdings. New investors F-Prime Capital, Eight Roads Ventures Japan, Piper Heartland Healthcare Capital, and NYBC Ventures also participated in the round alongside founding investor Blackstone Life Sciences. Wilson Sonsini Goodrich & Rosati advised Novo Holdings and F-Prime Capital on the transaction.
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Client Highlights
Wilson Sonsini Advises Vertos Medical Inc. in Acquisition by Stryker
On August 22, 2024, Stryker, a global leader in medical technologies, announced a definitive agreement to acquire Vertos Medical Inc., a privately held company providing a minimally invasive solution for treating chronic lower back pain caused by lumbar spinal stenosis. Wilson Sonsini Goodrich & Rosati advised Vertos on the transaction.
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Recent Events
WSGR Events
Wilson Sonsini’s 31st Annual Medical Device & Digital Health Conference
Wilson Sonsini Goodrich & Rosati’s 31st Annual Medical Device & Digital Health Conference will address topics of critical importance to medical device and digital health companies today, including key healthcare regulatory considerations, the relationship between intellectual property and valuation, a look back at 2023’s fundraising and deals, and how 2024 is shaping up along with partnering strategies in the current market.
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Affiliated Programs
Athena's Spring CXO Forum
Wilson Sonsini Goodrich & Rosati is pleased to support Athena's Spring CXO Forum. Athena's CXO Spring Forum creates a safe harbor exclusively for executive STEM women looking to optimize this circle of influence, renew coveted relationships, and share business resources directly from those running, leading, or launching STEM companies. In this intimate gathering, co-sponsored with JLL, we’ll delve into table discussions spanning the Corporate Transparency Act, trends in remote workplace dynamics, and other business challenges. Expect to exchange experiences and perspectives over a three-course dinner and take away new avenues to navigate the evolving market landscape.
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