Who invested in Somaxon Pharmaceuticals

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.

Biotech

Funding summaryUpdated 26 Oct 2026

$94Mraised across 3 rounds since 2004, from 3 sources

$23MSeries B$65MSeries C$6.0MVenture

Latest round: Venture, $6.0MJul 2009
Biggest round: $65MSeries C · Jun 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.

20052006200720082009

$23MSeries B$65MSeries C$6.0MVenture

First round: Series B, $23M
Biggest round: $65M
Usual gap between rounds: 4.1 years

The rounds

Jul 2009
Venture$6.0M
No investor was named in the report.
From a historical funding recordSEC filing: $6.0M sold, first sale Jul 2009
Jun 2005
Series C$65M
No investor was named in the report.
From a historical funding record
Jun 2004
Series B$23M6 new
From a historical funding record

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 B2004Series C2005Venture2009

Domain Associates

Montreux Growth PartnersBA Venture PartnersCDIB BioScience VenturesFog City CapitalWindamere Venture Partners

The exit

ExitBuyerPriceWhen

AcquiredPernix TherapeuticsundisclosedMar 2013

From historical deal records. Wrong? Tell us.

Everyone who backed them

Domain AssociatesVC firm1round

Montreux Growth PartnersVC firm1round

BA Venture PartnersVC firm1round

CDIB BioScience VenturesGrowth equity1round

Fog City CapitalVC firm1round

Windamere Venture PartnersVC firm1round

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

Quick answers about Somaxon Pharmaceuticals

Who invested in Somaxon Pharmaceuticals?

Somaxon Pharmaceuticals's investors include Domain Associates, Montreux Growth Partners, BA Venture Partners, CDIB BioScience Ventures and Fog City Capital, and 1 more on record.

How much has Somaxon Pharmaceuticals raised?

Somaxon Pharmaceuticals has raised $94M across 3 rounds since 2004.

When did Somaxon Pharmaceuticals last raise?

Somaxon Pharmaceuticals's most recent round was a Venture of $6.0M in Jul 2009.

What was Somaxon Pharmaceuticals's biggest round?

Somaxon Pharmaceuticals's largest round on record is $65M (Series C), in Jun 2005.

Who backed Somaxon Pharmaceuticals first?

Somaxon Pharmaceuticals's first round on record, in Jun 2004, was backed by Domain Associates, Montreux Growth Partners and BA Venture Partners and 3 others.