When was Sonobi founded?

Sonobi was founded in 2011 and raised its 1st funding round 4 years after it was founded.

Where is Sonobi located?

Sonobi is headquartered in New York City, United States. It is registered at Winter Park, Florida.

How many employees does Sonobi have?

As of May 31, 2026, the latest employee count at Sonobi is 31.

Is Sonobi a funded company?

Sonobi is a funded company, having raised a total of $10.4M across 2 funding rounds to date. The company's 1st funding round was a $***** Series A round, raised on Aug 04, 2015.

When was the latest funding round of Sonobi?

Sonobi's latest funding was a $***** Series B round on Oct 27, 2020, with participation from 1 investor. Its primary sector is AdTech. In United States, the AdTech sector has seen $1.09B in funding in 2026 to date.

Where does Sonobi rank among its competitors?

Sonobi ranks 8th amongst 129 active competitors, of which 10 are funded. It stands 8th in terms of total funding among its competitors. The most recent competitor to raise funding was Rembrand, which secured $37.5M in Nov, 2025.

Who are the top competitors of Sonobi?

Sonobi's top competitors include OpenX, Magnite and PubMatic. Among them, Rembrand secured the most recent funding round in November, 2025.

Sonobi - 2026 Company Profile, Team, Funding & Competitors

Company Details

Sonobi is a digital display advertising company bringing web publishers and advertisers together via a single buying and selling solution. Provides yield optimization technology using direct integration with a real-time bidding platform. Also offers an auction environment for 3rd party ad networks. Sonobi helps publishers consolidate revenue demand into a single bid stream and automates the process of serving campaigns across channels. Provides a self-service platform for RTB & yield optimization for small publishers as well.

Website: sonobi.com
Social
Registered Address: Winter Park, Florida

Key Metrics

Founded Year

2011

Location

New York City, United States

Stage

Series B

Total Funding

$10.4M in 2 rounds

Latest Funding Round

Series B, Oct 27, 2020, $*****

Investors

Cohere Capital & 2 more

Ranked

8^th among 129 active competitors

Employee Count

31 as on May 31, 2026

Investment & Acquisitions

Amply Media

Similar Companies

OpenX & 160 more

View Sonobi's full profile

Sonobi is associated with 1 legal entity given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
SONOBI INC. CIN: 474006202 , United States, Active	Dec 31, 1999	-	43 (As on Dec 31, 2024)	-

Sonobi has raised a total funding of $10.4M over 2 rounds. Its first funding round was on Aug 04, 2015. Its latest funding round was a Series B round on Oct 27, 2020 for $*****. 1 investor participated in its latest round. Sonobi has 3 institutional investors.

Here is the list of recent funding rounds of Sonobi:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Oct 27, 2020	6707661	Series B	1428948	7206496	5043067	3841181
Aug 04, 2015	2755939	Series A	5798777	9927167	3383545	Safeguard Scientifics

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View details of Sonobi's funding rounds and investors

The founders of Sonobi is Nathaniel Thomas.

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

Nathaniel Thomas: Co-Founder & CTO of Sonobi.
Contact Info: 1 email address

View details of Sonobi's Founder profiles and Board Members

Sonobi's employee count trend

Sonobi has 31 employees as of May 26. Here is Sonobi's employee count trend over the years:

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Top competitors of Sonobi include OpenX, Magnite and PubMatic. Here is the list of Top 10 competitors of Sonobi, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	OpenX 2007, Pasadena (United States), Series E	Provider of a supply-side platform for programmatic advertising and media	$85M	Sapphire Ventures, Accel & 29 others	74/100
2nd	Magnite 2011, Los Angeles (United States), Public	Platform offering SSP software	$45.7M	Sapphire Ventures, Advantas Capital Ventures ... & 2 others	72/100
3rd	PubMatic 2006, Redwood City (United States), Public	Provider of a platform for digital advertising supply chain management	$31M	Helion Venture Partners, Nexus Venture Partners ... & 6 others	70/100
4th	Sovrn 2006, Boulder (United States), Acquired	Platform offering SSP solution	$99.9M	Foundry, Boulder Ventures & 15 others	69/100
5th	Rembrand 2022, Palo Alto (United States), Series B	Provider of AI-powered advertising solutions for in-content and social media	$68.5M	Greycroft, Superset & 8 others	68/100
6th	Brightcom 1999, Herzliya (Israel), Series D	Cross-device publisher side platform	$73M	ICICI Bank, Oak Investment Partners & 2 others	63/100
7th	Equativ 2001, Paris (France), Acquired	Equativ - Fulfilling the promise of adtech	-	Bridgepoint Group, T.Capital & 2 others	57/100
8th	Sonobi 2011, New York City (United States), Series B	Premium programmatic advertising technology company	$10.4M	Capital Southwest, Safeguard Scientifics & 1 others	51/100
9th	Unruly 2006, London (United Kingdom), Acquired	Programmatic video supply-side platform	$25M	Amadeus Capital, BGF & 3 others	49/100
10th	Adtelligent 2008, New York City (United States), Unfunded	Supply side advertising technology company	-	-	48/100