What Undertone does

Undertone is a New York-headquartered, privately held digital advertising company founded in 2002 that develops high-impact, cross-screen digital advertising experiences for brands. The firm describes itself as a creator of cross-screen ad formats spanning display, video, and Connected TV, and it operates as an open programmatic sell-side platform (SSP) facilitating real-time bidding and automated advertising transactions across the CTV ecosystem, including Roku, Amazon Fire TV, Apple TV, Samsung TV, and LG Smart TV in the United States. Undertone is tracked in Pixalate's Q1 2026 CTV Seller Trust Index 2.0 alongside more than 20 other open programmatic CTV ad sellers (including Magnite, PubMatic, OpenX, Index Exchange, FreeWheel/Xandr Monetize, Equativ, BeachFront, TripleLift, InMobi, LG Ads, and Amazon Publisher Services), positioning it as a mid-sized independent competitor in a market dominated by larger platforms.

The company's revenue mechanics are not publicly disclosed in the available sources; pricing and contract structure details are withheld. Its go-to-market is horizontal, serving CTV publishers and advertisers as its primary segment, with cross-screen ad experiences and programmatic inventory monetization as its core value proposition. The firm has historically pursued an M&A-led expansion strategy, completing four acquisitions between 2010 and 2015 — Jambo Media (2010-11-07), World Web Network (2010-12-13), Upfront Digital Media (2014-06-11), and Sparkflow (2015-06-18) — and raised $40,000,000 from JMI Equity in a 2008-03-31 funding round led by JMI Equity. Headcount is reported at 501-1,000 employees, and the leadership team disclosed in the data includes CFO Mark A. Attarian, COO Paul Prior, VP Human Resources Louise Peddell, Regional VP JC Medici, and Director Bradford Woloson. Undertone's stated technology stack and proprietary features are not specified in the available sources, and no product-level detail beyond its SSP function is documented.

Name

Undertone

Website

https://undertone.com

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Undertone is a New York-based digital advertising company founded in 2002 that develops high-impact, cross-screen ad experiences for brands and operates as a programmatic Connected TV sell-side platform across major smart TV ecosystems.

Ownership category

akta.pro rank

Product category

Programmatic Digital Advertising (Connected TV)

NAICS

Advertising Agencies (541810), Media Buying Agencies (54183), Media Streaming Distribution Services, Social Networks, and Other Media Networks and Content Providers (51621)

SIC

Services-Advertising (7310), Services-Advertising Agencies (7311)

akta.pro primary industry

Connected TV (CTV) & OTT Performance Advertising (BPAFACAG)

akta.pro secondary industry

Video/CTV/OTT Media Buying (MPAAABAE)

Keywords

• Digital advertising
• Programmatic advertising
• Connected TV advertising
• Cross-screen advertising
• Supply-side platform

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Marketing or Sales, Operations

Core offering

Undertone develops high-impact, cross-screen digital advertising experiences for brands and operates as an open programmatic Connected TV (CTV) ad seller. The company enables real-time bidding and automated advertising transactions across major streaming platforms including Roku, Amazon Fire TV, Apple TV, Samsung TV, and LG Smart TV, functioning as a supply-side platform within the U.S. programmatic advertising ecosystem.

Product overview

Undertone is a Connected TV (CTV) advertising seller ranked in Pixalate's Q1 2026 CTV Seller Trust Index 2.0, operating as one of over 20 open programmatic CTV ad sellers across platforms including Roku, Amazon Fire TV, Apple TV, Samsung TV, and LG Smart TV in the United States. Based on the source data, Undertone functions as a sell-side platform (SSP) or supply-side entity within the programmatic advertising ecosystem, competing alongside companies such as Google AdExchange, Xandr Monetize, Equativ, InMobi, BeachFront, TripleLift, OpenX, Index Exchange, PubMatic, SMARTYADS LLP, Flat Ads, Amazon Publisher Services, LG Ads, and Magnite. The available source data provides limited detail on Undertone's specific product portfolio, modules, or individual service offerings.

Differentiator

Problem solved

Functional benefit

Products and services

• Programmatic Connected TV (CTV) Advertising Platform Open programmatic CTV ad seller enabling real-time bidding and automated advertising transactions across connected TV platforms including Roku, Amazon Fire TV, Apple TV, Samsung TV, and LG Smart TV. Designed for brands, agencies, demand-side platforms, and CTV publishers in the United States.
• High-Impact Cross-Screen Digital Advertising

Segments1 record

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Recent moves5 records

Expansion highlights3 records

Direct peers

• PubMatic: Public SSP with meaningful CTV supply share, listed alongside Undertone as a programmatic CTV ad seller. Competes for the same publisher-side inventory and demand-side budgets across omnichannel video.
• Magnite: The largest independent CTV-focused SSP, explicitly named alongside Undertone in the Pixalate CTV Seller Trust Index. Direct competitor for the same Roku, Fire TV, Apple TV, Samsung, and LG Smart TV programmatic supply.
• FreeWheel (Comcast): Premium video ad-serving and SSP platform owned by Comcast, with strong CTV publisher relationships. Directly competes for the same CTV supply that Undertone monetizes.
• Xandr Monetize: Microsoft-owned SSP explicitly listed alongside Undertone in the CTV Seller Trust Index. Competes for the same programmatic CTV inventory monetization.
• TripleLift: SSP specializing in high-impact formats including CTV, listed in the same CTV Seller Trust Index ranking. Comparable supply-side programmatic competitor for premium video/CTV demand.
• OpenX: Omnichannel SSP including CTV, listed among the CTV ad sellers in the same Pixalate ranking as Undertone. Comparable supply-side platform with overlapping publisher relationships.
• Index Exchange: Header-bidding SSP with deep CTV presence, named in the same competitive set as Undertone in Pixalate's index. Direct rival for premium CTV publisher integrations and DSP demand.
• BeachFront: Independent CTV/OTT-focused SSP named in the same competitive set as Undertone in Pixalate's CTV index. Direct competitor specializing in the same connected-TV supply chain.
• Equativ: Independent omnichannel SSP with growing CTV presence, named in the same Pixalate competitive set. Overlaps directly with Undertone on CTV publisher supply.

Broad incumbents

• Google AdExchange (AdX): Largest digital ad exchange and a top CTV ad seller, named in the same competitive set. Encompasses Undertone's addressable market as part of a much broader Google Ads portfolio.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/AccessUndertone
• Facebookfacebook.com/AccessUndertone
• LinkedInlinkedin.com/company/24519

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A4 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Undertone