United States · 
Who invested in Achillion Pharmaceuticals?
Achillion Pharmaceuticals's investors include Atlas Venture, Connecticut Innovations, Domain Associates, Clarus Ventures and GE Capital, and 10 more on record.
20022004200620082010
$41MVenture$50MVentureUnited States · Venture startup
Who invested in Achillion Pharmaceuticals
2 rounds we have observed, with the 15 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
$91Mraised across 2 rounds since 2002, from 2 sources
$41MVenture$50MVenture
- Latest round
- Venture, $50MAug 2010
- Step-upi
- 1.2×
- Investors
- 15
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Venture, $41M Jan 2002
- Biggest round
- $50M Venture · Aug 2010
- Between rounds
- 8.6 years from the last two
The rounds
- Aug 2010Venture$50M4 new
Reported by ir.achillion.comSEC filing: $50M sold, first sale Aug 2010
- Jan 2002Venture$41M11 new
Atlas Venture
Connecticut Innovations
GE Capital
Advent International
Schroder Ventures- Oakwood Medical Investors
Bear Stearns- KBL Healthcare Ventures
Pacific Growth Equities
SG Capital Partners- ING Furman Selz Asset Management
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.
Everyone who backed them
Oakwood Medical InvestorsVC firm1round
KBL Healthcare VenturesGrowth equity1round
ING Furman Selz Asset Managementno record of our own yet1round
Missing a round, or an investor who was in one? Tell us.
Quick answers about Achillion Pharmaceuticals
How much has Achillion Pharmaceuticals raised?
Achillion Pharmaceuticals has raised $91M across 2 rounds since 2002.
When did Achillion Pharmaceuticals last raise?
Achillion Pharmaceuticals's most recent round was a Venture of $50M in Aug 2010.
What was Achillion Pharmaceuticals's biggest round?
Its most recent round, $50M in Aug 2010, is also its largest on record.
Who backed Achillion Pharmaceuticals first?
Achillion Pharmaceuticals's first round on record, in Jan 2002, was backed by Atlas Venture, Connecticut Innovations and GE Capital and 8 others.
What stage is Achillion Pharmaceuticals at?
Achillion Pharmaceuticals's latest named round is a Venture, in Aug 2010.
Where is Achillion Pharmaceuticals based?
Achillion Pharmaceuticals is based in the United States.
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