David Greer is a Managing Director at Keystone Capital, whose known portfolio counts 20 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Managing Director at Keystone Capital, whose known portfolio counts 20 companies
- Suiteness
- Vacayo
- Hollywood Stock Exchange
- Brightflow AI
- ClariPi
- Evofem Biosciences
- Adial Pharmaceuticals
- Anypoint Media
- Barkley
- Chartwell Financial Advisory
- Eranovum
- Vrestem
- and 8 more
Investor Profile
David Greer is listed against sectors AI, Climate, Commerce and Consumer, and focus areas Biotech, Clean and Renewable Energy, Cloud Infrastructure and Communications Infrastructure in the database.
Keystone Capital 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 David Greer is worth approaching.
Colleagues at Keystone Capital
Scott Gwilliam
Managing Partner
Chicago, United States
Brian Prendergast
Vice President
Chicago, United States
Kevin Overby
Principal
Chicago, United States
Bill Sommerschield
Managing Director
Chicago, United States
Jason Van Zant
Managing Director
Chicago, United States
Andrew Wehr
CFO Portfolio Accounting & Finance
Chicago, United States
Todd Lanscioni
Managing Director
Chicago, United States
Erik Gernant
Principal
Chicago, United States
Matt Blanks
Vice President
Chicago, United States
Sean Lyons
Vice President
Chicago, United States
Kincy Gibson
Director
Chicago, United States
Matt DeLong
Principal
Chicago, United States
Frequently asked questions
Who is David Greer?
David Greer is a private equity investor based in Chicago, Illinois, United States, listed as Managing Director at Keystone Capital. The known portfolio of that firm counts 20 companies. That portfolio belongs to the firm, not to David Greer personally.
What does David Greer invest in?
Listed sectors include AI, Climate, Commerce and Consumer; listed focus areas include Biotech, Clean and Renewable Energy, Cloud Infrastructure and Communications Infrastructure. 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 David Greer invest at?
Keystone Capital appears in Late-Stage, Pre-Seed and Seed rounds across its known deals, and David Greer is listed there as Managing Director. 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 David Greer listed at?
David Greer is listed as Managing Director at Keystone Capital. 12 other people in the database share a firm with David Greer.
How do I contact David Greer?
An email address, a phone number and a LinkedIn page are on file for David Greer. 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