US · ai · fintech · tax compliance

Who invested in Sphere

One round we have observed, with the investors the report named. Every figure below came from a named source, and where the company reported the raise to the SEC itself, that is shown beside it.

1
rounds observed
3
investors named
$21M
reported across those rounds
Nov 2025
most recent

The rounds

Series A · Nov 2025 · $21M

a16z lead, Felicis Ventures, YC

Reported by TechCrunch · SEC filing: $412K sold under the offering, first sale Oct 2025

Everyone who backed them

InvestorTypeRounds
Investment firm1

Missing a round, or an investor who was in one? Tell us.