United States · Who invested in Rosum?
Rosum's investors include Steamboat Ventures, CRV, Allegis Capital, KTB Ventures and TruePosition.
20042005200620072008
$16MSeries A?Series A?Series A$15MSeries B
United States · Series B startup
Who invested in Rosum
Funding summaryUpdated 26 Oct 2026
$31Mraised across 4 rounds since 2003, from 4 sources
$16MSeries A$15MSeries B
- Latest round
- Series B, $15MApr 2008
- Biggest round
- $16MSeries A · May 2003
- Investors
- 5
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, $16M May 2003
- Biggest round
- $16M Series A · May 2003
- Usual gap between rounds
- 17 months the median of 3
The rounds
- Apr 2008Series B$15M1 new4 returning
Reported by venturebeat.com
- Jun 2005
- Oct 2004
- May 2003
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 A2003Series A2004Series A2005Series B2008
Steamboat Ventures
CRV
Allegis Capital
KTB Ventures
TruePosition
Steamboat VenturesCRVAllegis CapitalKTB VenturesTruePositionEveryone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about Rosum
How much has Rosum raised?
Rosum has raised $31M across 4 rounds since 2003. 2 rounds did not disclose an amount, so the total is a floor.
When did Rosum last raise?
Rosum's most recent round was a Series B of $15M in Apr 2008.
What was Rosum's biggest round?
Rosum's largest round on record is $16M (Series A), in May 2003.
Who backed Rosum first?
Rosum's first round on record, in May 2003, was backed by CRV, Steamboat Ventures and Allegis Capital and 1 others.
What stage is Rosum at?
Rosum's latest named round is a Series B, in Apr 2008.
Where is Rosum based?
Rosum is based in the United States.
Companies like Rosum
In the same sector, and raised in the last eighteen months.
Find investors like these
Search every investor by what they have actually funded, then narrow to your stage and market. Free.