United States · Seed startup
Funding summaryUpdated 26 Oct 2026
$271Mraised across 8 rounds since 2011, from 8 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
Reported by FinSMEsSEC filing: $12M sold, first sale Feb 2020
Reported by techcrunch.com
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
GreylockL
Bain Capital Ventures
NFX
Nyca Partners
Draper Associates
Octopus Ventures
InterWest Partners
Sierra Ventures
Precursor Ventures
Kapor CapitalMissing a round, or an investor who was in one? Tell us.
These 3 firms list Ribbon as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.
Ribbon's investors include Greylock, Bain Capital Ventures, NFX, Nyca Partners and Draper Associates, and 18 more on record.
Ribbon has raised $271M across 8 rounds since 2011.
Ribbon's most recent round was a Seed of $8.2M in Mar 2025.
Ribbon's largest round on record is $225M (Series A), in Oct 2018.
Ribbon's first round on record, in Sept 2011, was backed by InterWest Partners, Sierra Ventures and AngelPad.
Ribbon's latest named round is a Seed, in Mar 2025.
Ribbon is based in the United States.
Greylock led the Series B in 2019.
In the same sector, and raised in the last eighteen months.
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United States · 
