William Hess is a Vice President at 645 Ventures, whose known portfolio counts 10 companies.
Is William Hess a fit for your startup?
Paste your website. AI checks the fit and scores every other investor too.
Investment focus
Contacts
Affiliated funds' portfolios
Vice President at 645 Ventures, whose known portfolio counts 10 companies
- Sequence
- True Anomaly
- Arbor
- Forterra
- UPTIQ
- Condor Software
- Pomo
- Risotto
- Pelgo
- Variance
Investor Profile
The listing covers sectors AI, Commerce, Consumer and FinTech, and focus areas Analytics, Cybersecurity, D2C and Data. Startups operating in these areas may find William Hess relevant.
645 Ventures appears in Seed and Series A rounds across its known deals.
The firm portfolio and the focus above give founders context on whether William Hess matches their raise.
Colleagues at 645 Ventures
Nnamdi Okike
Managing Partner
New York, United States
Mendy Yang
Vice President
New York, United States
Parul Singh
Partner
San Francisco, United States
Vardan Gattani
Investor
New York, United States
John Evans
Connected Network Partner & Investor
New York, United States
Meredith Tibbals
Vice President
New York, United States
Aaron Holiday
Managing Partner
New York, United States
Jon H. Smith
Principal
San Francisco, United States
Frequently asked questions
Who is William Hess?
William Hess is a venture capital investor based in New York, United States, listed as Vice President at 645 Ventures. The known portfolio of that firm counts 10 companies. That portfolio belongs to the firm, not to William Hess personally.
What does William Hess invest in?
Listed sectors include AI, Commerce, Consumer and FinTech; listed focus areas include Analytics, Cybersecurity, D2C and Data. 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 William Hess invest at?
645 Ventures appears in Seed and Series A rounds across its known deals, and William Hess is listed there as Vice President. 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 William Hess listed at?
William Hess is listed as Vice President at 645 Ventures. 8 other people in the database share a firm with William Hess.
How do I contact William Hess?
An email address, a phone number and a LinkedIn page are on file for William Hess. 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