InfoSum: Funding, Investors & Team (Sep 2026)
InfoSum has developed a decentralized platform designed to remove the trust barriers between progress and privacy. Its platform enables advertisers, media owners, data providers, and other advertising technology firms to collaborate across multiple data sources, without requiring the underlying data to be moved or pooled. The company was founded in 2016 and is headquartered in Basingstoke, Hampshire.
InfoSum has raised $80.1M across 2 funding rounds on record, the most recent a Series B of $65.0M announced in Aug 2021.
That round is above the $5.0M median round size for Advertising companies tracked on FundedIQ over the last two years.
InfoSum Company Profile and Key Stats
Latest funding round on record: Aug 2021.
InfoSum Funding Rounds
InfoSum raised $15.1M in an undisclosed round announced in Sep 2020.
11 months later, a Series B of $65.0M was announced in Aug 2021.
InfoSum Founders and Leadership Team
Contact details for the InfoSum team: 2 of 2 have an email address on file.
Start 14-day free trial →InfoSum Funding Compared to Other Advertising Startups
InfoSum's latest round of $65.0M is above the median round in Advertising. Medians cover the last 24 months of disclosed rounds.
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InfoSum Funding FAQs
What does InfoSum do?
InfoSum has developed a decentralized platform designed to remove the trust barriers between progress and privacy. Its platform enables advertisers, media owners, data providers, and other advertising technology firms to collaborate across multiple data sources, without requiring the underlying data to be moved or pooled. The company was founded in 2016 and is headquartered in Basingstoke, Hampshire.
How much funding has InfoSum raised?
InfoSum has raised $80.1M across 2 rounds on record. The most recent is a Series B of $65.0M announced in Aug 2021.
When did InfoSum last raise funding?
InfoSum's most recent funding round on record is a Series B of $65.0M, announced in Aug 2021.
Who is the CEO of InfoSum?
Brian Lesser is listed as CEO at InfoSum.
Where is InfoSum headquartered?
InfoSum is based in Basingstoke, Hampshire, United Kingdom.
How many employees does InfoSum have?
InfoSum is in the 51-100 employee band.
How does InfoSum's funding compare to other Advertising startups?
InfoSum's latest round of $65.0M is above the $5.0M median round size for Advertising companies on FundedIQ across 810 tracked companies over the last two years.
About FundedIQ's InfoSum Funding Data
FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.
Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for InfoSum is left off this page rather than filled in.
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