Brisbane, CA · Founded 2020 · Privately Held (backing)
Developer of a carbon capture and utilization technology designed to enhance the natural process of carbon dioxide absorption from the atmosphere. Heirloom is based in Brisbane, CA and was founded in 2020. Its last reported valuation was $253 million in Jan 2022. It has raised $57.6 million.
Last reported valuation
$253.0M
Oct 2026
Priced at
—
Total raised
$57.6M
Last round
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Cap table — not yet on record
Heirloom's share-class structure hasn't surfaced in our sources yet. Cap tables are assembled from certificates of incorporation, round filings, and disclosures as they land.
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·The complete investor list: 48 names
·Watch Heirloom: the Monday email on marks, rounds and moves
