United States · 
Who invested in Webroot?
Webroot's investors include Accel, Mayfield Fund and TCV.
200520062007200820092010
$108MSeries A$913KVentureUnited States · Venture startup
Who invested in Webroot
2 rounds we have observed, with the 3 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
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Funding summaryUpdated 31 Oct 2026
$109Mraised across 2 rounds since 2005, from 2 sources
$108MSeries A$913KVenture
- Latest round
- Venture, $913KDec 2010
- Biggest round
- $108MSeries A · Feb 2005
- 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, $108M Feb 2005
- Biggest round
- $108M Series A · Feb 2005
- Between rounds
- 5.8 years from the last two
The rounds
- Dec 2010Venture$913K
No investor was named in the report.
From a historical funding record
- Feb 2005
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.
Also claim to have backed them
This firm lists Webroot as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.
Quick answers about Webroot
How much has Webroot raised?
Webroot has raised $109M across 2 rounds since 2005.
When did Webroot last raise?
Webroot's most recent round was a Venture of $913K in Dec 2010.
What was Webroot's biggest round?
Webroot's largest round on record is $108M (Series A), in Feb 2005.
Who backed Webroot first?
Webroot's first round on record, in Feb 2005, was backed by Accel, Mayfield Fund and TCV.
What stage is Webroot at?
Webroot's latest named round is a Venture, in Dec 2010.
Where is Webroot based?
Webroot is based in the United States.
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