United Kingdom · Series D startup

Who invested in Circassia

3 rounds we have observed, with the 5 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.

Funding summaryUpdated 26 Oct 2026

$145Mraised across 3 rounds since 2008, from 3 sources

$22MSeries B$25MSeries C$98MSeries D
Latest round
Series D, $98MApr 2011
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Investors
5
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.

2008200920102011
$22MSeries B$25MSeries C$98MSeries D
First round
Series B, $22M
Jan 2008
Biggest round
$98M
Series D · Apr 2011
Usual gap between rounds
23 months
the median of 2

The rounds

  1. Apr 2011
    Series D$98M

    No investor was named in the report.

    Reported by fiercebiotech.com

  2. Dec 2009
  3. Jan 2008

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

Invesco PerpetualGrowth equity2rounds
Lansdowne PartnersVC firm2rounds
Goldman SachsPrivate equity1round

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

Quick answers about Circassia

Who invested in Circassia?

Circassia's investors include Imperial Innovations Investment Management, Invesco Perpetual, Lansdowne Partners, Goldman Sachs and Invesco Private Capital.

How much has Circassia raised?

Circassia has raised $145M across 3 rounds since 2008.

When did Circassia last raise?

Circassia's most recent round was a Series D of $98M in Apr 2011.

What was Circassia's biggest round?

Its most recent round, $98M in Apr 2011, is also its largest on record.

Who backed Circassia first?

Circassia's first round on record, in Jan 2008, was backed by Goldman Sachs, Imperial Innovations Investment Management and Invesco Perpetual and 1 others.

What stage is Circassia at?

Circassia's latest named round is a Series D, in Apr 2011.

Where is Circassia based?

Circassia is based in the United Kingdom.

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