United States · 
Who invested in User Interface?
User Interface's investors include Canaan, RRE Ventures, Geneva Venture Partners and B.J. Cassin.
United States · Series A startup
Who invested in User Interface
One round we have observed, with the 4 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Funding summaryUpdated 26 Oct 2026
$8.3Mraised across 1 round since 2001, from 1 source
- Latest round
- Series A, $8.3MJan 2001
- Investors
- 4
The rounds
- Jan 2001
Everyone who backed them
B.J. Cassinno record of our own yet1round
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Quick answers about User Interface
How much has User Interface raised?
User Interface has raised $8.3M across 1 round since 2001.
When did User Interface last raise?
User Interface's most recent round was a Series A of $8.3M in Jan 2001.
What was User Interface's biggest round?
Its most recent round, $8.3M in Jan 2001, is also its largest on record.
Who backed User Interface first?
User Interface's first round on record, in Jan 2001, was backed by Canaan, RRE Ventures and Geneva Venture Partners and 1 others.
What stage is User Interface at?
User Interface's latest named round is a Series A, in Jan 2001.
Where is User Interface based?
User Interface is based in the United States.
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