Home About Team Portfolio Contact

Family Office · Est. 2001 · Westlake Village, CA

Building great companies alongside exceptional founders

Westlake Venture Partners is a family office that invests its own capital — alongside a select group of industry pioneers, executives, and founders — in emerging companies with extraordinary potential.

20+

Years Investing

50+

Combined Years Experience

12+

Portfolio Companies

Scroll to explore

Practical wisdom from the trenches

Created and managed by the original four founders of NetZero, we bring real operating experience — not just capital — to every partnership.

Hands-On Partnership

We vary our involvement based on each company's stage and needs — from strategic advisory to active management roles.

Talent & Culture First

We help build teams through talent acquisition, leadership development, and a relentless focus on company culture.

Full Spectrum Support

Technology strategy, product roadmaps, financial modeling, business planning, and customer acquisition — we've done it all ourselves.

Growth Financing

Assistance in structuring and securing venture capital and growth financing from our extensive network of investors.

"People make the company. Whether a company is old or young, most problems are ultimately overcome through building the right team."
— Ronald T. Burr, Managing Partner

Westlake Venture Partners was established in 2001 by the original four co-founders of NetZero (NASDAQ: UNTD), leveraging decades of combined experience taking companies from inception through IPO.

Founded by operators, not just investors

Our principals have built, scaled, and exited technology companies — giving us a unique perspective on what it takes to succeed.

RB

Ronald T. Burr

Managing Partner

Technology executive with deep expertise in SaaS, Internet, Interactive Marketing, and Digital Media. Co-founded NetZero and took it public with Goldman Sachs.

Former CEO & CPTO for leading SaaS companies in media, telecom and edtech with multiple exits

SH

Stacy A. Haitsuka

Partner

Entrepreneur and technologist with 15+ years of experience. Co-founded NetZero in 1997, serving as SVP of Technology through its IPO and $400M+ in capital raised.

Co-founder & CTO of TuneGo · Co-founder of Layer2Networks · Former CIO at Jambo · 50+ patents filed

HM

Harold R. MacKenzie

Partner

Technology innovator and NetZero co-founder. Holds eight patents in online advertising and market research. Extensive experience in operations, technology, and strategy.

Founder of finlit · Advisory roles at Inventiv Focus, JetEye, Jumpcut, Qmania, Green Plug & more

MZ

Marwan A. Zebian

Partner · International

Entrepreneur and technologist with 20+ years of experience. Known as "the idea man," Marwan manages international investments for WVP from Lebanon.

Career spans Bank of America, NetZero, Sempra Energy & Impact Software

TB

Trish Burr

Partner · Operations

Assists portfolio companies with business planning and human resources. Former HR & Ops executive at BlackLine Systems (NASDAQ: BL) from early stage through IPO.

Co-founded Impact Software · Helped secure NetZero's seed & Series A funding · Instrumental in Silver Lake Partners investment in BlackLine

Companies we've invested in and helped build

From digital power innovation to pharmaceuticals, our investments span industries where technology creates transformative value.

Rigetti
Quantum Computing
MacroFab
Electronics Manufacturing
Energy Innovations
Clean Energy Technology
Jumpcut
Online Video Editing
Napo
Pharmaceutical Development
TuneGo
Musician Fan Platform
Loveday Lumber
Building Materials
Netki
Digital Identity & Compliance
anyCOMM
Communications Technology
Green Plug
Digital Power Innovation
Jambo
Pay-Per-Call Pioneer
Qmania
Deal Distribution Network
JetEye
Search Aggregation & Sharing
EdenTree
Technology
Radius30
Technology Services
American Truck Outfitters
Automotive Accessories
Integris Financial
Financial Services

Let's start a conversation

Westlake Venture Partners works exclusively with companies referred to us by trusted individuals within our network.

info@westlakevp.com

We do not accept unsolicited business plans or proposals. Westlake Venture Partners is not a venture capital firm and does not manage investments for private investors.