companies / heirloomcarbon-com
Generated UTC · publication cutoff 2026-11-09
Insufficient cited evidence for a two-sentence summary.
verified=2026-05-05 json
| total_raised | 150,000,000150.0M | ○ |
|---|---|---|
| founded | null | |
| hq | Brisbane CA | |
| industry | unknown | |
| stage | series-b+ |
Heirloom runs direct-air-capture facilities that strip CO2 from air by accelerating natural limestone mineralization. It sells carbon-removal credits to large corporates with net-zero targets including Microsoft and Frontier. California and Louisiana plants give it combined annual capacity near 320,000 tons, powered by renewables.
No cited completed company acquisition recorded.
Dated disclosures. Customer relationships and classifications are historical; ARR is separate from revenue.
No cited disclosure recorded: named customer, disclosed revenue, ARR, count, B2B / B2C, sector, go-to-market.
No cited valuation with an explicit basis is recorded.
Historical post-money / actual annual or stated TTM revenue. Same currency; economic valuation date within 90 days of revenue period end, inclusive. No FX, ARR, annualized revenue, estimates or projections. Conflicts and ambiguous ties are withheld.
No qualifying pair recorded.
| date | type | amount | lead | src |
|---|---|---|---|---|
| 2024-12-01 | series-b | 150,000,000150.0M | null | ○ |
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| fact | status | src |
|---|---|---|
| Series B, $150.0M | attributed | ○ |
| existence | self-reported | WEB |
| description | self-reported | WEB |