Investor profile
Isabella Sun
Accelerator, Syndicate / Angel group, Venture capital & Venture Partner at Pioneer Fund
Isabella Sun works as a Venture Partner at Pioneer Fund. The firm's known portfolio counts 39 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Venture Partner at Pioneer Fund, whose known portfolio counts 39 companies
- Milk Video
- Atmos
- Hubble
- Atlas
- Taiv
- Thoughtly
- Alien
- Fractile
- Depot
- Harper
- Bolna
- Ellipsis
- and 27 more
Investor Profile
The listing covers sectors AI, Commerce, FinTech and Healthcare, and focus areas Analytics, Biotech, Data and Developer Tools. Startups operating in these areas may find Isabella Sun relevant.
Pioneer Fund appears in Late-Stage, Pre-Seed and Seed rounds across its known deals.
What the affiliated firm has backed is the closest available signal on whether Isabella Sun is worth approaching.
Colleagues at Pioneer Fund
Showing 20 of 90
Josue Gio
Venture Partner
Mexico City
Dave Messina
General Partner
San Diego, United States
Ti Zhao
Senior Venture Partner
San Francisco, United States
Ian Burgess
Venture Partner
Toronto, Canada
Deepanshu M.
Venture Partner
New York, United States
Nicholas Goldner
Venture Partner
San Francisco, United States
Sherwin Gandhi
Venture Partner
Austin, United States
Steve Johnston
Venture Partner
Austin, United States
Michael Heinrich
Venture Partner + Angel Investor
Singapore
Afraj Gill
Limited Partner
San Francisco, United States
Steli Efti
Senior Venture Partner
Austin, United States
Justin Olshavsky
General Partner
United States
Chris Williams
Venture Partner
Boise, United States
Aymeric Rabot
Venture Partner
Tampa, United States
Julien Brissonneau
Venture Partner
Mountain View, United States
Jonathan Tang
Investment Partner/LPAC Member
San Mateo, United States
Rebecca Todd
Investment Advisory Panel Member
Oxford, United Kingdom
Newsha Ghaeli
Venture Partner
Washington, United States
Nimit Mehra
Venture Partner
United States
Jaclyn Ling
Venture Partner
New York, United States
Frequently asked questions
Who is Isabella Sun?
Isabella Sun is an accelerator partner and syndicate member based in San Francisco, California, United States, listed as Venture Partner at Pioneer Fund. The known portfolio of that firm counts 39 companies. That portfolio belongs to the firm, not to Isabella Sun personally.
What does Isabella Sun invest in?
Listed sectors include AI, Commerce, FinTech and Healthcare; listed focus areas include Analytics, Biotech, Data and Developer Tools. 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 Isabella Sun invest at?
Pioneer Fund appears in Late-Stage, Pre-Seed and Seed rounds across its known deals, and Isabella Sun is listed there as Venture 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 Isabella Sun listed at?
Isabella Sun is listed as Venture Partner at Pioneer Fund. 90 other people in the database share a firm with Isabella Sun.
How do I contact Isabella Sun?
An email address, a phone number and a LinkedIn page are on file for Isabella Sun. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 6 September 2026 · How this data is built · Report a correction or request removal