United States · 
Who invested in TestBox?
TestBox's investors include Felicis, SignalFire, Firstminute Capital and GTMfund.
United States · Series A startup
Who invested in TestBox
Funding summaryUpdated 26 Oct 2026
$12Mraised across 1 round since 2026, from 1 source
- Latest round
- Series A, $12MMar 2026
- Investors
- 4
The rounds
- Mar 2026
Everyone who backed them
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Quick answers about TestBox
How much has TestBox raised?
TestBox has raised $12M across 1 round since 2026.
When did TestBox last raise?
TestBox's most recent round was a Series A of $12M in Mar 2026.
What was TestBox's biggest round?
Its most recent round, $12M in Mar 2026, is also its largest on record.
Who backed TestBox first?
TestBox's first round on record, in Mar 2026, was backed by Felicis, SignalFire and Firstminute Capital and 1 others.
What stage is TestBox at?
TestBox's latest named round is a Series A, in Mar 2026.
Where is TestBox based?
TestBox is based in the United States.
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