William Apfelbaum is an operator angel based in Greenwich, Connecticut, United States. The known portfolio counts 2 companies: Addy and B-Side Entertainment.
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Investment focus
- Focus
- Digital AdvertisingMarketing ServicesMedia & EntertainmentOut-of-Home Advertising
Contacts
William Apfelbaum portfolio companies (2)
- Addy
- B-Side Entertainment
Investor Profile
The known portfolio sits in sectors Commerce and Consumer, and focus areas Digital Advertising, Marketing Services, Media & Entertainment and Out-of-Home Advertising.
Stage-wise, the known deals cluster around Seed and Series B rounds.
Reviewing the investment history helps decide whether there is a realistic fit before reaching out.
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Frequently asked questions
Who is William Apfelbaum?
William Apfelbaum is an operator angel based in Greenwich, Connecticut, United States with 2 known investments on file, among them Addy and B-Side Entertainment. The sections above list the sectors and stages attached to that record.
What does William Apfelbaum invest in?
Listed sectors include Commerce and Consumer; listed focus areas include Digital Advertising, Marketing Services, Media & Entertainment and Out-of-Home Advertising. 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 Apfelbaum invest at?
The known deals of William Apfelbaum include Seed and Series B 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 Apfelbaum?
A LinkedIn page is on file for William Apfelbaum. It is readable inside RaiseHunt after you create an account. The database holds no email address and no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 6 September 2026 · How this data is built · Report a correction or request removal