Investor profile
Garrett Gilbertson
Syndicate / Angel group, Venture capital & Founder & Managing Partner at Sum Ventures, Chairman, Los Angeles Group at Band of Angels, Managing Partner at SUM Ventures
Garrett Gilbertson is a Managing Partner at SUM Ventures, whose known portfolio counts 12 companies.
Is Garrett Gilbertson a fit for your startup?
Paste your website. AI checks the fit and scores every other investor too.
Investment focus
Contacts
Affiliated funds' portfolios
Founder & Managing Partner at Sum Ventures, whose known portfolio counts 2 companies
- Automotus
- Purlin
Chairman, Los Angeles Group at Band of Angels, whose known portfolio counts 10 companies
- Materna Medical
- Raydiant Oximetry
- Champions Round
- Oze
- Parrable
- Rhaeos
- Sharper Sense
- AiDEN Auto
- Collective OS
- Fogarty Institute of Innovation
Managing Partner at SUM Ventures, whose known portfolio counts 12 companies
- Automotus
- Fantasy Life
- Irrigreen
- UNest
- Oze
- Sweatpals
- Purlin
- Transparency Analytics
- BRIUS
- Eduworks
- R3 Score
- Rotender
Investor Profile
The listing covers sectors AI, Consumer, Education and FinTech, and focus areas Analytics, Cloud Infrastructure, Data and Data Analytics. Startups operating in these areas may find Garrett Gilbertson relevant.
Stage-wise, the deals at SUM Ventures cluster around Pre-Seed, Seed and Series A rounds.
What the affiliated firm has backed is the closest available signal on whether Garrett Gilbertson is worth approaching.
Colleagues
Showing 20 of 34
Jayesh Sahasi
Angel Investor
San Francisco, United States
Rakesh Sood
Software Chair, Investment Selection Committee
San Francisco, United States
Suresh Pai
Angel Investor
Mountain View, United States
Alex Shubat
Member
San Francisco, United States
Li Lin
Angel Investor
Saratoga, United States
Theodore Stearns
Entrepreneur
San Diego, United States
Donald Yang
Member
Palo Alto, United States
Ken Borkan
Advisor / Investor
Los Angeles, United States
Marco Zúniga
Angel Investor
San Francisco, United States
Ian Sobieski
Chairman
San Francisco, United States
Carter Russ
Investor
Los Angeles, United States
Gerald Casilli
Member
Menlo Park, United States
Christopher Meyer
Member, Deal Selection Committee
Portola Valley, United States
Jill Nguyen
Investor
San Francisco, United States
Patrick Guerra
Band Member
San Francisco, United States
Ethan Zhou
Angel Investors
United States
Mansour Salame
Member
Phoenix, United States
Ian Patrick Sobieski
Vice Chair
Mountain View, United States
Rishit Parikh
Investor
United States
Edward Shen
Advisor, IC Member
San Francisco, United States
Frequently asked questions
Who is Garrett Gilbertson?
Garrett Gilbertson is a syndicate member and venture capital investor based in Hermosa Beach, California, United States, listed as Managing Partner at SUM Ventures. The known portfolio of that firm counts 12 companies. That portfolio belongs to the firm, not to Garrett Gilbertson personally.
What does Garrett Gilbertson invest in?
Listed sectors include AI, Consumer, Education and FinTech; listed focus areas include Analytics, Cloud Infrastructure, Data and Data Analytics. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Garrett Gilbertson invest at?
SUM Ventures appears in Pre-Seed, Seed and Series A rounds across its known deals, and Garrett Gilbertson is listed there as Managing Partner. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Garrett Gilbertson listed at?
Garrett Gilbertson is listed as Managing Partner at SUM Ventures. 34 other people in the database share a firm with Garrett Gilbertson.
How do I contact Garrett Gilbertson?
An email address, a phone number and a LinkedIn page are on file for Garrett Gilbertson. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
Skip the browsing. Let AI find your ideal investors in one minute.
Paste your startup website and AI picks your best-fit investors out of 135,000+ profiles.
Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal