Who invested in XenSource

3 rounds we have observed, with the 6 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.

Software

Funding summaryUpdated 26 Oct 2026

$38Mraised across 3 rounds since 2005, from 3 sources

$6.0MSeries A$17MSeries B$15MSeries C

Latest round: Series C, $15MOct 2006
Biggest round: $17MSeries B · Sept 2005
Investors: 6

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.

20052006

$6.0MSeries A$17MSeries B$15MSeries C

First round: Series A, $6.0M
Biggest round: $17M
Usual gap between rounds: 14 months

The rounds

Oct 2006
Series C$15M1 new3 returning
Reported by virtualization.info
Sept 2005
Series B$17M2 new2 returning
Reported by news.cnet.com
Jan 2005
Series A$6.0M3 new
Reported by theinquirer.net

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 B2005Series C2006

Kleiner Perkins Caufield & Byers

Sevin Rosen Funds

Accel

New Enterprise Associates

Intel Capital

Radar Partners

The exit

ExitBuyerPriceWhen

AcquiredCitrixundisclosedOct 2007

From historical deal records. Wrong? Tell us.

Everyone who backed them

Kleiner Perkins Caufield & ByersVC firm3rounds

Sevin Rosen FundsVC firm3rounds

AccelVC firm2rounds

New Enterprise AssociatesVC firm1round

Intel CapitalCorporate VC1round

Radar PartnersVC firm1round

Missing a round, or an investor who was in one? Tell us.

Quick answers about XenSource

Who invested in XenSource?

XenSource's investors include Kleiner Perkins Caufield & Byers, Sevin Rosen Funds, Accel, New Enterprise Associates and Intel Capital, and 1 more on record.