Toni Mason is an Investor at Four Rivers, whose known portfolio counts 2 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Investor at Four Rivers, whose known portfolio counts 2 companies
- Overmind
- Prompt Security
Investor Profile
Toni Mason is listed against sectors AI and SaaS, and focus areas AI Applications, AI Infrastructure, Cybersecurity and DevOps in the database.
Four Rivers appears in Seed and Series A rounds across its known deals.
The firm portfolio and the focus above give founders context on whether Toni Mason matches their raise.
Colleagues at Four Rivers
Frequently asked questions
Who is Toni Mason?
Toni Mason is a venture capital investor based in New York City, United States, listed as Investor at Four Rivers. The known portfolio of that firm counts 2 companies. That portfolio belongs to the firm, not to Toni Mason personally.
What does Toni Mason invest in?
Listed sectors include AI and SaaS; listed focus areas include AI Applications, AI Infrastructure, Cybersecurity and DevOps. 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 Toni Mason invest at?
Four Rivers appears in Seed and Series A rounds across its known deals, and Toni Mason is listed there as Investor. 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 Toni Mason listed at?
Toni Mason is listed as Investor at Four Rivers. One other person in the database shares a firm with Toni Mason.
How do I contact Toni Mason?
A LinkedIn page is on file for Toni Mason. 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 5 September 2026 · How this data is built · Report a correction or request removal