United States · Funded startup
6 rounds we have observed, with the 8 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
$51Mraised across 6 rounds since 2009, from 6 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
Reported by sec.govSEC filing: $8.0M sold, first sale Nov 2013
Reported by finsmes.comSEC filing: $14M sold, first sale May 2012
Reported by techcrunchit.comSEC filing: $4.0M sold, first sale Nov 2010
Reported by deals.venturebeat.comSEC filing: $7.1M sold, first sale Jun 2009
No investor was named in the report.
From a historical funding recordSEC filing: $7.1M sold, first sale Jun 2009
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Prism Venture PartnersAmazon
OpenViewOpenView Venture PartnersPrism VentureWorks
Ares Capital Corporation
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Sonian's investors include Summerhill Venture Partners, Prism Venture Partners, Amazon, OpenView and OpenView Venture Partners, and 3 more on record.
Sonian has raised $51M across 6 rounds since 2009.
Sonian's most recent round was a Debt of $7.5M in Oct 2015.
Sonian's largest round on record is $14M (Series C), in May 2012.
Sonian's first round on record, in Sept 2009, was backed by Prism Venture Partners and Summerhill Venture Partners.
Sonian's latest named round is a Debt, in Oct 2015.
Sonian is based in the United States.
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United States ·