Westlake Biopartners Fund I, L.P.
Westlake Village BioPartners · adviser of record: Westlake Biopartners, LLC · 2017 vintage
Westlake Biopartners Fund I, L.P. is a 2017 venture fund managed by Westlake Village BioPartners, with $320mm raised (Form D, amount sold). It reported $442mm in gross assets at year-end 2025, 1.38x its size, against a peak of $531mm in 2022.
- Latest value held
- $442mm year-end 2025
- Peak
- $531mm year-end 2022
- Fund size
- $320mm Form D, amount sold
- Held vs. size
- 1.38x peak 1.66x
Value held by year-end
Gross asset value reported on Form ADV at each year-end. Dashed line: fund size. Open in the Fund Tracker
| Year-end | Gross assets | ÷ size | Change |
|---|---|---|---|
| 2025 | $442mm | 1.38x | -15% over 2 yrs |
| 2023 | $523mm | 1.63x | -2% |
| 2022 | $531mm | 1.66x | +12% |
| 2021 | $476mm | 1.49x | +6% |
| 2020 | $448mm | 1.40x | +42% |
| 2019 | $316mm | 0.99x | -2% |
| 2018 | $324mm | 1.01x | -1% |
| 2017 | $327mm | 1.02x | – |
Other funds from Westlake Village BioPartners
- Westlake Biopartners Fund III, L.P. 2023
- Westlake Biopartners Fund II, L.P. 2020
- Westlake Biopartners Opportunity Fund I, L.P. 2020
All Westlake Village BioPartners funds
About these numbers
Gross asset value is what the manager reports holding in the fund at each fiscal year-end, on SEC Form ADV, Schedule D. It includes the GP’s own commitment and is before carried interest, so it is not the LPs’ net return, and it does not show cash already distributed. A fall in value can mean distributions, markdowns or both. Fund size is the amount sold reported on Form D, which for some funds reflects only a first close. Private fund ID 805-2359059660. Data updated October 13, 2026.
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