Who invested in Issuu?
Issuu's investors include Sunstone Life Science Ventures and KDDI.

United States · Series B startup
Funding summaryUpdated 26 Oct 2026
$25Mraised across 3 rounds since 2007, from 3 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Issuu's investors include Sunstone Life Science Ventures and KDDI.
Issuu has raised $25M across 3 rounds since 2007.
Issuu's most recent round was a Series B of $10M in Jul 2014.
Issuu's largest round on record is $10M (Series A), in Feb 2007.
Issuu's first round on record, in Feb 2007, was backed by Sunstone Life Science Ventures.
Issuu's latest named round is a Series B, in Jul 2014.
Issuu is based in the United States.
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