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Heirloom Carbon

CleanSeries B

Heirloom is restoring balance to our atmosphere by removing 1 billion tons of carbon dioxide using natural processes to engineer the world's most cost-effective Direct Air Capture solution.

🌐 www.heirloomcarbon.comLinkedIn📍 CAEst. 2020👥 51-200 employees
0Rounds
2Articles
General InformationHeirloom Carbon Technologies is a direct air capture startup headquartered in Brisbane/San Francisco, California, founded in 2020, with approximately 173 employees as of early 2026.
Funding & FinancialsHeirloom has raised a total of ~$203M across 8 rounds, most recently a $150M Series B in December 2024 led by Future Positive and Lowercarbon Capital, with participation from Breakthrough Energy Ventures, Japan Airlines, Mitsubishi, Mitsui, and Siemens Financial Services.
Leadership & TeamCEO and co-founder Shashank Samala previously co-founded Tempo Automation and worked at Square; co-founders also include Noah McQueen (Head of Research) and Zack Bloom.
Recent ActivityIn February 2025, Heirloom partnered with the United Airlines Ventures Sustainable Flight Fund to advance aviation decarbonization using DAC technology for both carbon removal and sustainable aviation fuel production.

Highlights

Total Raised
Latest Round
Stage
Series B
clean-tech
Employees
51-200
Founded 2020
Headquarters
CA
News Coverage
2 articles
Last: 2mo ago
Talent Signals
SEC Filings

News Coverage 2

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