Walter Greenberg is an angel investor based in Chicago, Illinois, United States. The known portfolio is one company, brettapproved.
Is Walter Greenberg a fit for your startup?
Paste your website. AI checks the fit and scores every other investor too.
Investment focus
- Stage
- Seed
Contacts
Walter Greenberg portfolio company (1)
- brettapproved
Affiliated funds' portfolios
Venture Partner at Mastersfund™, whose known portfolio counts 8 companies
- Tribute
- Pagedip
- Automaton
- Fyrii
- Humming
- Advocat
- Bold Reuse
- Heywell
Investor Profile
The listing covers sectors AI, Food and Travel, and focus areas Big Data and Data Analytics. Startups operating in these areas may find Walter Greenberg relevant.
The stage tag on this profile is Seed.
Reviewing the investment history helps decide whether there is a realistic fit before reaching out.
Colleagues at Mastersfund™
Similar investors
Showing 20 of 100
Sarah Imbach
angel investor and operator angel
Kirkland, United States
Sheryl Sandberg
Co-Founder
San Francisco, United States
Soraya Darabi
Founder
New York, United States
Wenda Harris Millard
angel investor
New York, United States
Ekaterina Almasque
angel investor
London, United Kingdom
Sheila Gulati
Founder and Managing Director
United States
Jill Raderstorf
angel investor
Columbus, United States
Andrew Roosevelt
angel investor and operator angel
New York, United States
Sonja Perkins
angel investor and operator angel
United States
Joanne Wilson
angel investor and operator angel
New York, United States
Mada Seghete
Co-Founder
San Francisco, United States
Somdutta Singh
Managing Partner
Dubai, United Arab Emirates
Nola E. Masterson
Venture Partner
San Francisco, United States
Sharon Vosmek
CEO
San Francisco, United States
Jeannette zu Fürstenberg
President
Berlin, Germany
Serena W.
angel investor and operator angel
Sacramento, United States
Theresia Gouw
Founding Partner
Palo Alto, United States
Reshma Saujani
angel investor and operator angel
New York, United States
Amy Banse
Managing Director and Head of Funds
San Francisco, United States
Bethann Kassman
Lead Investor
Naples, United States
Frequently asked questions
Who is Walter Greenberg?
Walter Greenberg is an angel investor based in Chicago, Illinois, United States with one known investment on file, brettapproved. The sections above list the sectors, stages and firms attached to that record.
What does Walter Greenberg invest in?
Listed sectors include AI, Food and Travel; listed focus areas include Big Data and Data Analytics. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Walter Greenberg invest at?
The database lists Walter Greenberg for Seed rounds. 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 Walter Greenberg listed at?
Walter Greenberg is listed as Venture Partner at Mastersfund™. One other person in the database shares a firm with Walter Greenberg.
How do I contact Walter Greenberg?
An email address and a LinkedIn page are on file for Walter Greenberg. The address stays masked on this page and is readable inside RaiseHunt after you create an account. The database holds no phone number for this profile.
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