Westlake BioPartners® is an accelerator and venture capital firm. Based in Westlake Village, California, United States. The known portfolio counts 9 companies, including Star Therapeutics, Electra Therapeutics, ArsenalBio, Latigo Biotherapeutics, Neuron23 and Recludix Pharma.
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Investment focus
- Sector
- Healthcare
- Focus
- BiotechCell & Gene TherapyDrug DiscoveryGenomicsImmunotherapyPharma
Contacts
Who to pitch at Westlake BioPartners®
Westlake BioPartners® portfolio companies (9)
- Star Therapeutics
- Electra Therapeutics
- ArsenalBio
- Latigo Biotherapeutics
- Neuron23
- Recludix Pharma
- AllRock Bio
- Borealis Biosciences
- Kate Therapeutics
Co-investors
Funds that share portfolio companies with Westlake BioPartners®.
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About Westlake BioPartners®
The firm's listing covers sector Healthcare, and focus areas Biotech, Cell & Gene Therapy, Drug Discovery and Genomics; known deals cluster at Growth, Series A and Series B.
The team counts 4 people in our database. Beth Seidenberg (Co-founding Managing Director) and Sean Harper (Managing Partner) are shown as the contacts to pitch.
Across the known portfolio, 20 co-investors appear alongside Westlake BioPartners®, including Rock Springs Capital, Redmile Group and The Sprout Fund.
Frequently asked questions
What is Westlake BioPartners®?
Westlake BioPartners® is an accelerator and venture capital firm based in Westlake Village, California, United States, with a known portfolio of 9 companies. The portfolio comes from public investment records rather than from the firm, so deals that never surfaced publicly are not in it.
What does Westlake BioPartners® invest in?
Listed sectors include Healthcare; listed focus areas include Biotech, Cell & Gene Therapy, Drug Discovery and Genomics. Those tags come from the portfolio attached to the firm, so they describe what has been backed rather than a stated mandate for what comes next.
What stage does Westlake BioPartners® invest at?
The known deals of Westlake BioPartners® include Growth, Series A and Series B rounds. Check that against your own round before reaching out: stage mismatch is the most common reason a well matched sector still goes nowhere.
Who should I pitch at Westlake BioPartners®?
2 of the 4 people on file at Westlake BioPartners® are listed as contacts for the firm. All 4 have their own profile page.
How do I contact Westlake BioPartners®?
Any email address on file for the firm is masked on this page and readable inside RaiseHunt after you create an account. The 4 people attached to the firm have their own pages, each showing whether an address is on file for them.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal