United States · 
Who invested in IO.com?
IO.com's investors include Sterling Partners.
200920102011
$56MGrowth$200MDebt$105MGrowth$4.5MVentureUnited States · Venture startup
Who invested in IO.com
4 rounds we have observed, with the one investor 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
$366Mraised across 4 rounds since 2008, from 4 sources
$56MGrowth$200MDebt$105MGrowth$4.5MVenture
- Latest round
- Venture, $4.5MMay 2011
- Biggest round
- $200MDebt · Oct 2010
- Investors
- 1
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Growth, $56M Dec 2008
- Biggest round
- $200M Debt · Oct 2010
- Usual gap between rounds
- 6 months the median of 3
The rounds
- May 2011
- Apr 2011
- Oct 2010
- Dec 2008
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Quick answers about IO.com
How much has IO.com raised?
IO.com has raised $366M across 4 rounds since 2008.
When did IO.com last raise?
IO.com's most recent round was a Venture of $4.5M in May 2011.
What was IO.com's biggest round?
IO.com's largest round on record is $200M (Debt), in Oct 2010.
Who backed IO.com first?
IO.com's first round on record, in Dec 2008, was backed by Sterling Partners.
What stage is IO.com at?
IO.com's latest named round is a Venture, in May 2011.
Where is IO.com based?
IO.com is based in the United States.
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