Who invested in C3

4 rounds we have observed, with the 0 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.

IT Services

Funding summaryUpdated 26 Oct 2026

$108Mraised across 4 rounds since 2010, from 4 sources

$13MVenture$30MSeries B$50MVenture$15MSeries A

Latest round: Series A, $15MMay 2013
Biggest round: $50MVenture · Oct 2010
Investors: 0

See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

201120122013

$13MVenture$30MSeries B$50MVenture$15MSeries A

First round: Venture, $13M
Biggest round: $50M
Usual gap between rounds: 2.7 years

The rounds

May 2013
Series A$15M
No investor was named in the report.
Reported by bizjournals.com
Oct 2010
Venture$50M
No investor was named in the report.
Reported by gigaom.com
Apr 2010
Series B$30M
No investor was named in the report.
Reported by sec.gov
Apr 2010
Venture$13M
No investor was named in the report.
Reported by sec.gov

Also claim to have backed them

These 3 firms list C3 as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.