William Harnisch is an angel investor based in New York, United States. The known portfolio is one company, The Muse.
Is William Harnisch a fit for your startup?
Paste your website. AI checks the fit and scores every other investor too.
Investment focus
- Stage
- Seed
Contacts
William Harnisch portfolio company (1)
- The Muse
Investor Profile
Founders in the listed sectors Consumer, Education and SaaS, and focus areas Corporate Training, Employee Benefits and HR Tech will recognize the pattern in this portfolio.
The stage tag on this profile is Seed.
The portfolio and focus above give founders context on whether William Harnisch matches their raise.
Similar investors
Showing 20 of 100
Matthew Goldstein
angel investor
Boston, United States
Henrik Herr
angel investor
Frankfurt, Germany
Jim Hornthal
Lester Center Fellow
San Francisco, United States
Jesse Hertzberg
President
New York, United States
Harry Hawks
Partner
New York, United States
Andrew Heyer
Managing Partner
New York, United States
Stefan Menden
angel investor
Berlin, Germany
Bill Hambrecht
Founder and Chairman
San Francisco, United States
David Hehman
Co-founder
Sebastopol, United States
Chris Mason
angel investor and operator angel
London, United Kingdom
Aaron Schumm
angel investor and operator angel
New York, United States
Russ Campanello
angel investor
Waltham, United States
Munish Varma
Managing Partner
United Kingdom
Miguel Encarnacion
Managing Partner
Berlin, Germany
Bill L.
angel investor
Norristown, United States
Russell Hirsch
angel investor
Atlantic City, United States
Andrew Hunt
Founder & General Partner
New York, United States
Christoph Hornung
angel investor
Marco Valta
Managing Partner
Zürich, Switzerland
Antoine Fabre
angel investor
New York, United States
Frequently asked questions
Who is William Harnisch?
William Harnisch is an angel investor based in New York, United States with one known investment on file, The Muse. The sections above list the sectors and stages attached to that record.
What does William Harnisch invest in?
Listed sectors include Consumer, Education and SaaS; listed focus areas include Corporate Training, Employee Benefits and HR Tech. 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 William Harnisch invest at?
The database lists William Harnisch 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.
How do I contact William Harnisch?
An email address, a phone number and a LinkedIn page are on file for William Harnisch. 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 6 September 2026 · How this data is built · Report a correction or request removal