Beth Seidenberg, MD, is the Founding Managing Director of Westlake Village BioPartners. See contact routes.
Beth Seidenberg, MD, is the Founding Managing Director of Westlake Village BioPartners, an early-stage life sciences venture capital firm in Westlake Village, California, where she previously served as a General Partner at Kleiner Perkins since 2005. Her investment thesis targets early-stage biotech companies across diverse therapeutic areas and modalities, with a strategic focus on establishing Los Angeles as a major biotech hub. The firm has raised over $820 million since 2018 to incubate and invest in 20 life sciences companies, though specific check sizes and lead/follow behavior are not publicly detailed. Notable portfolio companies include Tesaro (ovarian cancer therapeutics), Atara Biotherapeutics (allogeneic T cell therapy), Epizyme (epigenetics), and Kyverna Therapeutics. Seidenberg distinguishes herself by combining 20+ years of senior drug development experience at Amgen, Bristol-Myers Squibb, and Merck with her medical background to help entrepreneurs translate scientific breakthroughs into medicines. She publicly asserts that the industry is in the "Golden Age of Biotech," reflecting her distinctive point of view on the sector's current po
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