William Geist works as a Managing Partner at Upper90. The firm's known portfolio counts 10 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Managing Partner at Upper90, whose known portfolio counts 10 companies
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Investor Profile
William Geist is listed against sectors AI, Climate, Commerce and Consumer, and focus areas Cloud Infrastructure, Commerce Enablement, Consumer Goods and Credit in the database.
Upper90 appears in Growth, Late-Stage and Seed rounds across its known deals.
The firm portfolio and the focus above give founders context on whether William Geist matches their raise.
Colleagues at Upper90
Jason Finger
Chairman
Los Angeles, United States
Paul Appelbaum
Co-Founder GrubHub Seamless
New York, United States
Trey Cobb
Principal
New York, United States
Billy Libby
Managing Partner
Providence, United States
Dallin Rosdahl
Managing Director
Salt Lake City, United States
Michael Graver
Head of Investor Relations
New York, United States
Christine Connelly
Chief Executive Officer
New York, United States
Drew Pelletier
Investor
New York, United States
Frequently asked questions
Who is William Geist?
William Geist is a venture capital investor and venture debt investor based in New York, United States, listed as Managing Partner at Upper90. The known portfolio of that firm counts 10 companies. That portfolio belongs to the firm, not to William Geist personally.
What does William Geist invest in?
Listed sectors include AI, Climate, Commerce and Consumer; listed focus areas include Cloud Infrastructure, Commerce Enablement, Consumer Goods and Credit. 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 Geist invest at?
Upper90 appears in Growth, Late-Stage and Seed rounds across its known deals, and William Geist 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 William Geist listed at?
William Geist is listed as Managing Partner at Upper90. 8 other people in the database share a firm with William Geist.
How do I contact William Geist?
An email address, a phone number and a LinkedIn page are on file for William Geist. 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 5 September 2026 · How this data is built · Report a correction or request removal