France · 
Who invested in SIEN?
SIEN's investors include 360 Capital and I-Source Gestion.
2008
$4.0MSeries A$3.8MSeries BFrance · Series B startup
Who invested in SIEN
2 rounds we have observed, with the 2 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
$7.8Mraised across 2 rounds since 2007, from 2 sources
$4.0MSeries A$3.8MSeries B
- Latest round
- Series B, $3.8MApr 2008
- Biggest round
- $4.0MSeries A · Apr 2007
- Investors
- 2
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, $4.0M Apr 2007
- Biggest round
- $4.0M Series A · Apr 2007
- Between rounds
- 12 months from the last two
The rounds
- Apr 2008
- Apr 2007
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.
Quick answers about SIEN
How much has SIEN raised?
SIEN has raised $7.8M across 2 rounds since 2007.
When did SIEN last raise?
SIEN's most recent round was a Series B of $3.8M in Apr 2008.
What was SIEN's biggest round?
SIEN's largest round on record is $4.0M (Series A), in Apr 2007.
Who backed SIEN first?
SIEN's first round on record, in Apr 2007, was backed by 360 Capital.
What stage is SIEN at?
SIEN's latest named round is a Series B, in Apr 2008.
Where is SIEN based?
SIEN is based in France.
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