Lynne Chou, Define Ventures

Lynne Chou O’Keefe is the Founder and Managing Partner of Define Ventures. See sector focus and contact routes.

About Lynne Chou

Lynne Chou O’Keefe is the Founder and Managing Partner of Define Ventures, one of the largest early-stage health tech firms with $800 million in assets under management. She previously served as a Senior Partner at Kleiner Perkins focused on digital health and connected devices before launching Define in 2020 with an initial $87 million fund. Define Ventures invests in early-stage digital health companies across incubation, seed, Series A, and Series B stages, primarily in the Silicon Valley region. The firm has backed approximately 24 companies to date, including notable portfolio members Hims & Hers, Livongo, and Evolent, which have generated $23 billion in combined exit value. Chou O’Keefe sits on the publicly traded board of Hims & Hers and emphasizes a high-conviction approach to scaling category-defining health tech companies. She has been recognized as WSJ’s Women in Venture Capital to Watch and Rock Health’s Top 50 ICON honoree, reflecting her influence in digital health investing.

Lynne Chou at a glance

Role
Founder and Managing Partner
Organization
Define Ventures
Location
San Francisco, CA
Investor type
Venture Capital
Focus areas
Finance, Financial Services, Venture Capital, Health Care, Medical, Wellness, Hospital, Software

Frequently asked about Lynne Chou

What does Lynne Chou invest in?
Lynne Chou at Define Ventures (San Francisco, CA) — sector focus: Finance, Financial Services, Venture Capital, Health Care, Medical, Wellness, Hospital, Software, Fitness, Healh Diagnostics, Information Technology, E-Commerc….
How do I contact Lynne Chou?
Lynne Chou's published profile links (website, LinkedIn or X where available) are listed on the StartupFundraising.com investor profile.
Where is Lynne Chou based?
Lynne Chou is based in San Francisco, CA.

StartupFundraising tracks this investor record from SEC filings and announced rounds, updating focus, location and portfolio history as new data lands. Use it to gauge fit before an outreach, then widen the search to investors in San Francisco.

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