United States · Funded startup
5 rounds we have observed, with the 7 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
$96Mraised across 5 rounds since 2002, from 5 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
No investor was named in the report.
From a historical funding recordSEC filing: $2.9M sold, first sale Mar 2009
Reported by venturebeat.com
Foundation Capital
Mayfield Fund
Worldview Technology Partners
Sand Hill CapitalReported by onstor.com
Reported by mayfield.com
From a historical funding record
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Foundation CapitalMayfield FundWorldview Technology PartnersVelocity Interactive GroupSand Hill CapitalComVentures
Fuse CapitalFrom historical deal records. Wrong? Tell us.
Missing a round, or an investor who was in one? Tell us.
ONStor's investors include Foundation Capital, Mayfield Fund, Worldview Technology Partners, Velocity Interactive Group and Sand Hill Capital, and 2 more on record.
ONStor has raised $96M across 5 rounds since 2002.
ONStor's most recent round was a Debt of $4.5M in Feb 2009.
ONStor's largest round on record is $27M (Venture), in Aug 2007.
ONStor's first round on record, in Mar 2002, was backed by Foundation Capital, Mayfield Fund and Worldview Technology Partners.
ONStor's latest named round is a Debt, in Feb 2009.
ONStor is based in the United States.
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United States ·