Mantel: Funding, Investors & Team (Sep 2026)
Mantel proposes a method to trap CO2 before it enters the atmosphere.
Mantel has raised $18.3M across 1 funding round on record, the most recent an undisclosed round of $18.3M announced in Aug 2026.
That round is above the $7.5M median round size for United States companies tracked on FundedIQ over the last two years.
Mantel Company Profile and Key Stats
Latest funding round on record: Aug 2026.
Mantel Funding Rounds
Mantel Investors
16 investors are recorded in total; the 5 named above are those the record identifies.
Mantel Founders and Leadership Team
Contact details for the Mantel team: 2 of 2 have an email address on file, 2 have a LinkedIn profile.
Start 14-day free trial →Mantel Funding in Context
Mantel's latest round of $18.3M is above the median round in United States. Medians cover the last 24 months of disclosed rounds.
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Mantel Funding FAQs
What does Mantel do?
Mantel proposes a method to trap CO2 before it enters the atmosphere.
How much funding has Mantel raised?
Mantel has raised $18.3M across 1 round on record. The most recent is an undisclosed round of $18.3M announced in Aug 2026.
When did Mantel last raise funding?
Mantel's most recent funding round on record is an undisclosed round of $18.3M, announced in Aug 2026.
Who has invested in Mantel?
Investors on record for Mantel include Alumni Ventures, Engine Ventures, MCJ, Hartree Partners, Newlab. FundedIQ records 16 investors in total.
Who founded Mantel?
FundedIQ lists Sean Robertson (Co-founder and CTO), Cameron Halliday (Co-founder and CEO) at Mantel.
Where is Mantel headquartered?
Mantel is based in Cambridge, United States.
How many employees does Mantel have?
Mantel is in the 11-50 employee band.
When was Mantel founded?
Mantel was founded in 2022.
About FundedIQ's Mantel 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 Mantel is left off this page rather than filled in.
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