Heirloom: Funding, Investors & Team (Oct 2026)
Heirloom is a provider of direct air capture technology to enhance the natural process of CO2 absorption from the atmosphere. Its technology accelerates limestone's ability to capture carbon dioxide, storing it permanently underground while operating with renewable energy.
Heirloom has raised $203M across 4 funding rounds on record, the most recent an undisclosed round announced in Dec 2025.
Heirloom Company Profile and Key Stats
Latest funding round on record: Dec 2025.
Heirloom Funding Rounds
2 of 4 rounds were announced without a disclosed amount and are excluded from the total.
Heirloom raised $53.0M in a Series A announced in Mar 2022.
2.8 years later, a Series B of $150M was announced in Dec 2024.
2 months later, an undisclosed round was announced in Feb 2025 with no disclosed amount.
10 months later, an undisclosed round was announced in Dec 2025 with no disclosed amount.
Heirloom Founders and Leadership Team
No contact details are on record for this team yet.
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Heirloom Funding FAQs
What does Heirloom do?
Heirloom is a provider of direct air capture technology to enhance the natural process of CO2 absorption from the atmosphere. Its technology accelerates limestone's ability to capture carbon dioxide, storing it permanently underground while operating with renewable energy.
How much funding has Heirloom raised?
Heirloom has raised $203M across 4 rounds on record.
When did Heirloom last raise funding?
Heirloom's most recent funding round on record was announced in Dec 2025. The amount was not disclosed.
Who founded Heirloom?
FundedIQ lists Noah Mcqueen (Founder), Shashank Samala (Founder) at Heirloom.
Where is Heirloom headquartered?
Heirloom is based in Brisbane, California, United States.
How many employees does Heirloom have?
Heirloom is in the 101-250 employee band.
About FundedIQ's Heirloom 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 Heirloom is left off this page rather than filled in.
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