InfoSum
About InfoSum
InfoSum is a decentralized data collaboration platform that enables advertisers, media owners, data providers, and other organizations to collaborate across multiple data sources using patented non-movement-of-data technology — without ever moving or sharing underlying customer data. Founded in 2015, the platform serves financial services, retail, healthcare, gaming, CTV, and media/advertising sectors. InfoSum was acquired by WPP in April 2025.
Company details
Funding
Total raised
$93.2M
Last stage
Growth
Investors
Founders
Nick Halstead
Nick Halstead founded InfoSum in 2016 with a vision to connect the world's data without sharing it. Previously CEO of DataSift, he is also credited with inventing the Retweet button in 2008.
LinkedIn
Brian Lesser
Brian Lesser joined InfoSum as Executive Chairman in April 2020 and became Chairman & CEO in December 2020. Former founder and CEO of Xandr (AT&T) and former North American CEO of GroupM (WPP).
LinkedInWhat happens next.
No applications, no recruiter spam. Just the intro.
Confirm the fit
A few questions to make sure this role is the right shape for you. Two minutes.
I pitch you to the company
I write the intro, send it to the founder, and handle the back-and-forth.
A meeting lands on your calendar
If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.