Westlake Biopartners

Venture Capital Exempt reporting adviser

Legal name: Westlake Biopartners, LLC

Westlake Village, CA Website LinkedIn X

AUM

$1.4B
Private fund assets

Private funds

4
Venture Capital 4

Private fund assets

$1.4B
Gross asset value

Employees

—

Last Form D raise

Jun 2023
Most recent fund filing

From SEC Form ADV filing (filed Mar 30, 2026). View on SEC

Investment focus

As listed in industry directories; may be out of date.

Stages
Series A
Geographies
USA

People(4)

Owners and executive officers named on the firm's SEC Form ADV.

B
Beth Seidenberg
Managing Director
Source: SEC Form ADV
B
Brogan Perrelli
Vice President Finance and Operations
Source: SEC Form ADV
D
David Allison
Managing Director
Source: SEC Form ADV
M
Mira Chaurushiya
Managing Director
Source: SEC Form ADV

Funds(4)

Private funds reported on Form ADV, with amounts raised from the funds' SEC Form D filings.

FundTypeGross assetsRaised (Form D)InvestorsLast Form DRecency
Westlake Biopartners Fund III, L.P.Venture Capital$440.8M——Jun 2023Cold
Westlake Biopartners Opportunity Fund I, L.P.Venture Capital$113.9M$100.0M25Jun 2021Cold
Westlake Biopartners Fund II, L.P.Venture Capital$353.5M——Jul 2020Cold
Westlake Biopartners Fund I, L.P.Venture Capital$442.3M$320.0M33Sep 2018Cold

Board seats

Companies whose SEC Form D filings name one of this firm's people as a director, matched by name and office ZIP code.

No board seats matched from SEC filings yet.

Regulatory identifiers

CRD number
299325
SEC file number
802-114322

Sources