Adbrain
AcquiredEntrepreneur FirstLondon, GB Β· 6 known investors
Adbrain links customer data across mobile devices, desktops, and connected TVs to build a unified view of each individual. Marketing teams use this cross-device identity data to target audiences, allocate ad spend, and maintain consistent messaging across channels.
Also known as Adbrain Ltd.
Founders & leadership


Investors Β· 6
Also in the syndicate Β· 1
Company profile
researched Aug 2026Adbrain is a London-based digital identity and data intelligence company that builds cross-device identity graphs, mapping the phones, laptops and connected TVs used by a single person or household into a unified view. Its stated aim is to let marketers target the person rather than the device, addressing audience fragmentation across media channels.
The company's platform supports both targeting and measurement use cases: cross-device retargeting across desktop, mobile app, mobile web and browsers; audience extension (described on its site as extending reach to valuable audiences by up to 4x); universal frequency capping applied per user rather than per device; cross-device path-to-conversion and attribution; unique reach and frequency measurement; and in-store attribution when combined with offline measurement partners. Notion Capital, an investor, described the Adbrain Identity Platform as integrated with more than 100 marketing automation and analytics solutions as well as advertising sales and buying platforms, and its customer ID mapping technology as patent pending.
Adbrain was acquired by demand-side platform The Trade Desk in October 2017 for undisclosed terms. Following the acquisition, the Adbrain graph is described on the company's website as exclusively available within The Trade Desk platform.
Founding story
Sources give the founding year as 2012 (Notion Capital and Seedtable). Gareth Davies is described as co-founder and CEO; prior to Adbrain he held senior positions at Google and at mobile marketing agency Somo, and worked with the London Tech Advocates group promoting London's technology sector. A third-party database also lists Sacha Carton, Pourya Saber and Rashid Mansoor as founders.
Business model
Adbrain licensed access to its cross-device identity graph and ID mapping technology to marketers and their technology partners, integrating with marketing automation, analytics and advertising buying and selling platforms. Post-acquisition, distribution runs through The Trade Desk's platform, with prospective users directed to contact The Trade Desk.
Traction
The identity platform was reported as integrated with more than 100 marketing automation and analytics solutions, providing access to billions of digital consumer IDs. The Trade Desk had carried Adbrain's graph in its marketplace since 2015 and cited the value of retaining access to the data set as a rationale for buying the company. At acquisition the team numbered 20 people.
Latest developments
The most recent reported development is the October 2017 acquisition by The Trade Desk. The Adbrain website subsequently states that the Adbrain graph is exclusively available in The Trade Desk platform, and a third-party database lists Adbrain as a subsidiary of The Trade Desk, Inc.
βΈFull profile β market position, technology, go-to-market, geography, history, risks & controversies
Market position
Adbrain competed in the cross-device identity graph segment alongside Drawbridge, Tapad and Oracle's Crosswise, all of which also supplied identity-linking graphs into The Trade Desk's cross-device marketplace. Notion Capital described Adbrain as a leading provider of customer ID mapping solutions. The Trade Desk positioned the acquisition as giving advertisers an independent alternative to the walled gardens in cross-device targeting.
Adbrain positioned its multidimensional approach to identity β modelling people, households and devices rather than single device pairings β and its machine learning treatment of unstructured signals as the basis for combining scale with accuracy. The Trade Desk highlighted the deterministic nature of the data set and its combination with login data to create a proprietary graph.
Technology
Adbrain applies machine learning algorithms to contextualize unstructured data points across devices, people and households, producing a multidimensional identity graph intended to combine broad coverage with behavioural detail. Its investor describes the customer ID mapping technology as patent pending, and The Trade Desk characterized the acquired asset as a deterministic cross-device ID data set to be combined with login data to form a proprietary device graph.
Go-to-market
The company sold to digital marketers and their technology partners, distributing its graph through integrations with more than 100 marketing automation, analytics and ad buying/selling platforms, including presence in The Trade Desk's cross-device services marketplace from 2015. After the acquisition its website routes prospective customers to The Trade Desk.
Digital marketers, brands and the agencies that buy media on their behalf, plus marketing technology partners requiring cross-device identity resolution for targeting and measurement.
Geography
Headquartered in London, United Kingdom, with additional offices reported in San Francisco and New York.
History
Founded in 2012 in London, Adbrain raised $1.5m in seed funding in July 2013 in a round led by Notion Capital with angel Anil Hansjee, followed by a $7.5m Series A reported in March 2014. In February 2015 it launched Cortex, described as a new breed of data intelligence. From 2015 its identity graph was offered through The Trade Desk's cross-device services marketplace. In February 2016 it raised a further $7.5m from Notion Capital, Octopus Ventures and new investor Cisco Investments to expand internationally, and appointed Jason Atlas as CTO. In October 2017 The Trade Desk acquired the company in its first-ever acquisition.
Risks & controversies
No controversies are reported in the sources. Sources note tension in the market between independent ad tech and walled gardens, and The Trade Desk's stated concern that deterministic data sets can become unavailable to the open ecosystem when acquired. Third-party database figures for employees and revenue are estimates and conflict with the 20-person headcount reported at acquisition.
Compiled by commissioned research from 7 cited public sources β announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed β not independently audited.
Timeline Β· 7
launches, deals, and filingsThe Trade Desk made its first-ever acquisition, buying cross-device identity graph company Adbrain for undisclosed terms; the deal added a 20-person team, bringing The Trade Desk headcount to 650, and was not expected to materially affect its earnings.
Funding from existing investors Notion Capital and Octopus Ventures plus new investor Cisco Investments, intended to increase the company's international scale.
$7.5M source β
Adbrain appointed Jason Atlas, previously in technology leadership roles at Microsoft, Bloomberg and Internet Identity, as Chief Technology Officer leading technology strategy and engineering.
Adbrain launched Cortex, described by its investor Notion Capital as a new breed of data intelligence.
From 2015, The Trade Desk carried Adbrain's identity graph in its cross-device services marketplace alongside graphs from Drawbridge, Tapad and Oracle's Crosswise.
Notion Capital portfolio news item reporting a $7.5m Series A round.
$7.5M source β
Seed funding of $1.5 million led by Notion Capital, with angel investor Anil Hansjee also participating.
$1.5M source β
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
βΈResearch sources Β· 7
primary sources listed
- Adbrain | Solving Customer Identityadbrain.com Β· web
7 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Adbrain do?
- London cross-device identity company whose ID graph links devices to people; acquired by The Trade Desk in 2017.
- Who founded Adbrain?
- Adbrain was founded by Elia Videtta, Rashid Mansoor.
- Who are Adbrain's investors?
- Adbrain's investors include Entrepreneur First, Notion Capital, Cisco Investments, octopus investments, Octopus Ventures.
- Where is Adbrain headquartered?
- Adbrain is headquartered in London, GB.
