United States · Venture startup

Who invested in Duo Security

7 rounds we have observed, with the 12 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.

Cybersecurity

Funding summaryUpdated 26 Oct 2026

$120Mraised across 7 rounds since 2010, from 7 sources

$1.0MSeed$6.0MSeries A$1000KSeries A$12MSeries B$30MSeries C$70MSeries D
Latest round
VentureJan 2020
Biggest round
$70MSeries D · Oct 2017
Investors
12
See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

201020122014201620182020
$1.0MSeed$6.0MSeries A$1000KSeries A$12MSeries B$30MSeries C$70MSeries D?Venture
First round
Seed, $1.0M
Aug 2010
Biggest round
$70M
Series D · Oct 2017
Usual gap between rounds
2.1 years
the median of 6

The rounds

  1. Jan 2020
    VentureAmount undisclosed5 returning

    Source recorded

  2. Oct 2017
    Series D$70M5 new1 returning

    Reported by FinSMEs

  3. Apr 2015
    Series C$30M1 new4 returning

    From a historical funding record

  4. Sept 2014
    Series B$12M1 new3 returning

    From a historical funding record

  5. Aug 2012
    Series A$1000K1 returning

    Reported by sec.govSEC filing: $1000K sold, first sale Aug 2012

  6. Feb 2012
    Series A$6.0M3 new1 returning

    Reported by techcrunch.comSEC filing: $5.0M sold, first sale Feb 2012

  7. Aug 2010

Founders and team

From the SEC filings it signed: 1 on the team.

  • Douglas Joon SongExecutive Officer, Directori

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Everyone who backed them

Google VenturesCorporate VC4rounds
Radar PartnersVC firm4rounds
RedpointVC firm3rounds
BenchmarkVC firm3rounds
True VenturesVC firm3rounds
Index VenturesVC firm2rounds
Geodesic CapitalVC firm2rounds
True VenturesVC firm1round
True.VC firm1round
Lead Edge Capital/ Workdayno record of our own yet1round

Missing a round, or an investor who was in one? Tell us.

Also claim to have backed them

This firm lists Duo Security as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

SourcefireGrowth equityPer its own site

Quick answers about Duo Security

Who invested in Duo Security?

Duo Security's investors include Google Ventures, Radar Partners, Redpoint, Benchmark and True Ventures, and 7 more on record.

How much has Duo Security raised?

Duo Security has raised $120M across 7 rounds since 2010. One round did not disclose an amount, so the total is a floor.

When did Duo Security last raise?

Duo Security's most recent round was a Venture in Jan 2020.

What was Duo Security's biggest round?

Duo Security's largest round on record is $70M (Series D), in Oct 2017.

Who backed Duo Security first?

Duo Security's first round on record, in Aug 2010, was backed by True Ventures and Resonant Venture Partners.

What stage is Duo Security at?

Duo Security's latest named round is a Venture, in Jan 2020.

Where is Duo Security based?

Duo Security is based in the United States.

Companies like Duo Security

In the same sector, and raised in the last eighteen months.

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