When was Duo founded?

Duo was founded in 2010 and raised its 1st funding round within a year of its incorporation.

Where is Duo located?

Duo is headquartered in Ann Arbor, United States. It is registered at Rīga, Brāļu Kaudzīšu iela 46 - 39.

Who is the current CEO of Duo?

Dug Song of Duo. They are also angel investors in 3 startups.

How many employees does Duo have?

As of Aug 31, 2026, the latest employee count at Duo is 438.

Is Duo a funded company?

Duo is a funded company, having raised a total of $120M across 6 funding rounds to date. The company's 1st funding round was a $1M Seed round, raised on Aug 18, 2010.

How much is Duo worth?

The last known valuation of Duo was $2.35B as of Aug 02, 2018.

When was the latest funding round of Duo?

Duo's latest funding was a $70M Series D round on Oct 18, 2017, with participation from 10 investors.

Is Duo a Cybersecurity company?

The primary sector of Duo is Cybersecurity.

Where does Duo rank among its competitors?

Duo ranks 1st amongst 533 active competitors, of which 94 are funded. It stands 5th in terms of total funding among its competitors. The most recent competitor to raise funding was Opal, which secured $23M in Jun, 2026.

Who are the top competitors of Duo?

Duo's top competitors include RSA, SailPoint and ID.me. Among them, Opal secured the most recent funding round in June, 2026.

Duo - 2026 Company Profile, Team, Funding & Competitors

Q: Is Duo an acquired company?

Duo got acquired by Cisco on Aug 02, 2018.

Duo is an acquired company based in Ann Arbor (United States), founded in 2010 by Dug Song. It operates as a Provider of SSO and MFA based IAM solutions. Duo has raised $120M in funding from investors like Redpoint Ventures, Meritech and Lead Edge Capital, with last known valuation of $2.35B. The company has 533 active competitors, including 94 funded and 60 that have exited. Its top competitors include companies like RSA, SailPoint and ID.me.

Company Details

Provider of SSO and MFA based IAM solutions. It offers a suite of identity security solutions designed to enhance organizational security and streamline access management. It offers features such as multi factor authentication, remote access, device trust, single sign on, adaptive access policies, and more.

Website: duo.com
Social
Phone Number: +1 **********
Registered Address: Rīga, Brāļu Kaudzīšu iela 46 - 39

Key Metrics

Founded Year

2010

Location

Ann Arbor, United States

Stage

Acquired

Total Funding

$120M in 6 rounds

Latest Funding Round

Series D, Oct 18, 2017, $70M

Last Known Valuation

$2.35B as on Aug 02, 2018

Investors

Redpoint Ventures & 20 more

Ranked

1^st among 533 active competitors

Employee Count

438 as on Aug 31, 2026

Investment & Acquisitions

Reportwell

Similar Companies

ID.me & 249 more

Exit Details

Acquired by Cisco (Aug 02, 2018)

View Duo's full profile

Duo is associated with 5 legal entities given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
DUO SYSTEMS CIN: 50103252911 , Latvia, Active	Oct 12, 2009	€0 - €1M (As on Dec 31, 2024)	2 (As on Dec 31, 2021)	-
DUO CIN: 40103119952 , Latvia, Active	Apr 06, 1994	€0 - €1M (As on Dec 31, 2019)	2 (As on Dec 31, 2019)	-
DUO AG CIN: 40003623373 , Latvia, Active	Mar 19, 2003	€0 - €1M (As on Dec 31, 2024)	3 (As on Dec 31, 2022)	-
DUO SECURITY, INC CIN: 271572372 , United States, Active	Dec 31, 1999	-	640 (As on Dec 31, 2019)	-
DUO SECURITY, INC. CIN: 271572372 , United States, Active	Dec 22, 2009	-	640 (As on Dec 31, 2018)	-

Duo got acquired by Cisco on Aug 02, 2018 at an acquisition amount of $*****.

Click here to take a look at Duo's acquisition in detail

Duo has raised a total funding of $120M over 6 rounds. Its first funding round was on Aug 18, 2010. Its latest funding round was a Series D round on Oct 18, 2017 for $70M. 10 investors participated in its latest round. Duo has 21 institutional investors.

Here is the list of recent funding rounds of Duo:

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Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Oct 18, 2017	$70M	Series D	$1.17B	31236.1x	Meritech, Lead Edge Capital	Geodesic Capital, Index Ventures, Redpoint Ventures, True Ventures, Radar Capital, Google Ventures, Resonant Venture Partners, Workday Ventures
Apr 14, 2015	$30M	Series C	-	-	Redpoint Ventures	Benchmark, True Ventures, Google Ventures, Resonant Venture Partners
Sep 22, 2014	$12M	Series B	-	-	-	Benchmark

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View details of Duo's funding rounds and investors

The founders of Duo is Dug Song.

Here are the details of Duo's key team members:

Dug Song: Co-Founder & CEO of Duo and founder of 3 other companies, Duo, Decibel and Duo Security. They are also an angel investor in 3 startups.

View details of Duo's Founder profiles and Board Members

Duo's employee count trend

Duo has 438 employees as of Aug 26. Here is Duo's employee count trend over the years:

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Top competitors of Duo include RSA, SailPoint and ID.me. Here is the list of Top 10 competitors of Duo, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Duo 2010, Ann Arbor (United States), Acquired	Provider of SSO and MFA based IAM solutions	$120M	Meritech, Redpoint Ventures & 19 others	79/100
2nd	RSA 1982, Bedford (United States), Acquired	Provider of identity and access management solutions for diverse environments	$7.25M	Clearlake Capital Group, Asia Pacific Ventures ... & 5 others	75/100
3rd	SailPoint 2005, Austin (United States), Public	Provider of identity security solutions for modern enterprise risk management	$26.6M	Thoma Bravo, Elsewhere Partners & 9 others	73/100
4th	ID.me 2010, Mclean (United States), Series E	Cloud based secure identity management and authentication solutions provider	$619M	Viking Global Investors, Ribbit Capital & 36 others	72/100
5th	SecureAuth 2005, Irvine (United States), Series C	Platform that features in customer identity and access management solutions	$238M	Toba Capital, K1 Investment Management & 1 others	69/100
6th	HYPR 2014, New York City (United States), Series D	Provider of passwordless multi-factor authentication, identity verification, and risk management	$131M	RRE Ventures, Advent International & 14 others	69/100
7th	Yubico 2007, Stockholm (Sweden), Public	Provider of two-factor authentication solutions	$30M	Bure Equity, Meritech & 8 others	68/100
8th	1Kosmos 2018, Edison (United States), Series B	Block-chain-based passwordless authentication for customers	$62M	ForgePoint Capital, Gula Tech Adventures & 4 others	68/100
9th	Opal 2020, San Francisco (United States), Series C	Cloud based platform offering infrastructure security solutions	$59M	Greylock Partners, Battery Ventures & 8 others	68/100
10th	Saviynt 2010, El Segundo (United States), Series B	Provider of AI-based identity security and access management platform solutions	$870M	Carrick Capital Partners, PNC & 7 others	68/100