United States · 
Who invested in Cuil?
Cuil's investors include Greylock, Tugboat Ventures and Madrone Capital Partners.
2008
$8.0MSeries A$25MSeries B
United States · Series B startup
Who invested in Cuil
Funding summaryUpdated 26 Oct 2026
$33Mraised across 2 rounds since 2007, from 2 sources
$8.0MSeries A$25MSeries B
- Latest round
- Series B, $25MApr 2008
- Step-upi
- 3.1×
- Investors
- 3
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series A, $8.0M Mar 2007
- Biggest round
- $25M Series B · Apr 2008
- Between rounds
- 14 months from the last two
The rounds
- Apr 2008Series B$25M1 new2 returning
Reported by techcrunch.com
- Mar 2007
Who was in which round
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about Cuil
How much has Cuil raised?
Cuil has raised $33M across 2 rounds since 2007.
When did Cuil last raise?
Cuil's most recent round was a Series B of $25M in Apr 2008.
What was Cuil's biggest round?
Its most recent round, $25M in Apr 2008, is also its largest on record.
Who backed Cuil first?
Cuil's first round on record, in Mar 2007, was backed by Greylock and Tugboat Ventures.
What stage is Cuil at?
Cuil's latest named round is a Series B, in Apr 2008.
Where is Cuil based?
Cuil is based in the United States.
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