Investor profile
Jonathan Sun
Corporate VC, Venture capital & Founder at UpsideDown VC, Ecosystem Builder at Various
Jonathan Sun works as a Founder at UpsideDown VC. The firm's known portfolio counts 7 companies.
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Investment focus
- Sector
- SaaS
- Focus
- Convertible Future Earnings AgreementEnterprise SaaSHR TechVertical SaaS
Contacts
Affiliated funds' portfolios
Founder at UpsideDown VC, whose known portfolio counts 7 companies
- Pinpoint
- Upside
- Wonder Studios
- Ceartas DMCA
- FanBasis
- Pockla
- Benbase
Ecosystem Builder at Various, whose known portfolio counts 2 companies
- taalentfy
- Keas
Investor Profile
The listing covers sector SaaS, and focus areas Convertible Future Earnings Agreement, Enterprise SaaS, HR Tech and Vertical SaaS. Startups operating in these areas may find Jonathan Sun relevant.
Stage-wise, the deals at UpsideDown VC cluster around Pre-Seed, Seed and Series A rounds.
The firm portfolio and the focus above give founders context on whether Jonathan Sun matches their raise.
Colleagues
Showing 20 of 148
Gemma Bloemen
Angel Investor/ Advisor
London, United Kingdom
Peter Kazanjy
Startup Advisor and Investor
San Francisco, United States
Jason Davis
Investor / Startup Advisor
New York, United States
Ankit Jain
Investor & Advisor
San Francisco, United States
Siddharth Puri
Investor
Singapore
Dave Vasen
Investor
San Francisco, United States
Naomi Pilosof Ionita
Startup Advisor (Product/Growth/Monetization)
San Francisco, United States
Dennis Fong
Angel / Advisor
Burlingame, United States
Sokratis Papafloratos
Angel investor
London, United Kingdom
Gabi Lewis
Investor and/or Advisor
New York, United States
David Gutelius
Investor
Reno, United States
Ben Galbraith
Investor
Palo Alto, United States
Perry Blacher
Angel Investor
London, United Kingdom
Bryan Tsao
Angel Investor
New York, United States
Manik Gupta
Investor and Advisor
San Francisco, United States
James Hilton
Board Member
London, United Kingdom
Stephen Chau
Angel Investor and Advisor
Palo Alto, United States
Anjula Acharia
Board & Advisory Roles
New York, United States
Anand Dass
Relentless cheerleader of AR/MR/VR founders
Menlo Park, United States
Rick Morrison
Investor
San Francisco, United States
Frequently asked questions
Who is Jonathan Sun?
Jonathan Sun is a corporate venture investor and venture capital investor based in London, England, United Kingdom, listed as Founder at UpsideDown VC. The known portfolio of that firm counts 7 companies. That portfolio belongs to the firm, not to Jonathan Sun personally.
What does Jonathan Sun invest in?
Listed sectors include SaaS; listed focus areas include Convertible Future Earnings Agreement, Enterprise SaaS, HR Tech and Vertical SaaS. 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 Jonathan Sun invest at?
UpsideDown VC appears in Pre-Seed, Seed and Series A rounds across its known deals, and Jonathan Sun is listed there as Founder. 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 Jonathan Sun listed at?
Jonathan Sun is listed as Founder at UpsideDown VC. 148 other people in the database share a firm with Jonathan Sun.
How do I contact Jonathan Sun?
A LinkedIn page is on file for Jonathan Sun. It is readable inside RaiseHunt after you create an account. The database holds no email address and no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal