William Callahan works as a Principal at TZP Group. The firm's known portfolio counts 10 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Principal at TZP Group, whose known portfolio counts 10 companies
- Wave Sports + Entertainment
- Break The Floor Productions
- Finzly
- Soccer Post
- Star Dance Alliance
- The Fragrance Group
- Thrivewell Infusion
- Trash Butler
- True Lacrosse
- Truvideo
Investor Profile
The listing covers sectors Commerce, Consumer, FinTech and Healthcare, and focus areas Business Services, CPG, D2C and Enterprise SaaS. Startups operating in these areas may find William Callahan relevant.
TZP Group appears in Late-Stage, Seed and Series A rounds across its known deals.
The firm portfolio and the focus above give founders context on whether William Callahan matches their raise.
Colleagues at TZP Group
Dan Galpern
Partner
New York, United States
Shamit Mehta
Partner - Growth Equity
Boston, United States
Katie Derbyshire
Investor
Greenwich, United States
George Philipose
Vice President
New York, United States
Brett Rosenbluth
Vice President
New York, United States
Kenneth Esterow
Partner
Wyckoff, United States
Sam Katz
Managing Partner
New York, United States
Dan Gaspar
Partner
New York, United States
Michael Morgan
Principal
New York, United States
Paul Davis
Investor
West Palm Beach, United States
Frequently asked questions
Who is William Callahan?
William Callahan is a private equity investor based in New York, United States, listed as Principal at TZP Group. The known portfolio of that firm counts 10 companies. That portfolio belongs to the firm, not to William Callahan personally.
What does William Callahan invest in?
Listed sectors include Commerce, Consumer, FinTech and Healthcare; listed focus areas include Business Services, CPG, D2C and Enterprise SaaS. 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 Callahan invest at?
TZP Group appears in Late-Stage, Seed and Series A rounds across its known deals, and William Callahan is listed there as Principal. 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 Callahan listed at?
William Callahan is listed as Principal at TZP Group. 10 other people in the database share a firm with William Callahan.
How do I contact William Callahan?
An email address, a phone number and a LinkedIn page are on file for William Callahan. 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