United States · Who invested in Roundbox?
Roundbox's investors include RRE Ventures, Core Capital Partners, Polaris Partners, SVB Capital and ITOCHU Corporation, and 1 more on record.
200620072008
$8.0MSeries A$15MSeries B$20MSeries C
United States · Series C startup
Who invested in Roundbox
Funding summaryUpdated 26 Oct 2026
$43Mraised across 3 rounds since 2005, from 3 sources
$8.0MSeries A$15MSeries B$20MSeries C
- Latest round
- Series C, $20MDec 2008
- Step-upi
- 1.3×
- Investors
- 6
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 Sept 2005
- Biggest round
- $20M Series C · Dec 2008
- Usual gap between rounds
- 2.7 years the median of 2
The rounds
- Dec 2008Series C$20M3 new3 returning
SVB Capital
Polaris Partners
RRE Ventures
Core Capital Partners
ITOCHU Corporation- Montagu Newhall Associates
Reported by startupmeme.comSEC filing: $37K sold, first sale Feb 2009
- Apr 2006Series B$15M1 new2 returning
Reported by m.fiercewireless.com
- Sept 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.
Series A2005Series B2006Series C2008RRE VenturesCore Capital PartnersPolaris PartnersSVB CapitalITOCHU CorporationMontagu Newhall Associates
RRE VenturesCore Capital PartnersPolaris PartnersSVB CapitalITOCHU CorporationMontagu Newhall AssociatesEveryone who backed them
Montagu Newhall AssociatesGrowth equity1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about Roundbox
How much has Roundbox raised?
Roundbox has raised $43M across 3 rounds since 2005.
When did Roundbox last raise?
Roundbox's most recent round was a Series C of $20M in Dec 2008.
What was Roundbox's biggest round?
Its most recent round, $20M in Dec 2008, is also its largest on record.
Who backed Roundbox first?
Roundbox's first round on record, in Sept 2005, was backed by RRE Ventures and Core Capital Partners.
What stage is Roundbox at?
Roundbox's latest named round is a Series C, in Dec 2008.
Where is Roundbox based?
Roundbox is based in the United States.
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