Question 1

Who funded Heirloom?

Accepted Answer

Heirloom has been funded by Microsoft, Carbon Direct, Breakthrough Energy Ventures.

Question 2

How much has Heirloom raised?

Accepted Answer

Heirloom has raised $150M in total funding, most recently in their Series B round.

Question 3

Who founded Heirloom?

Accepted Answer

Heirloom was founded by Shashank Samala, Noah McQueen in 2020.

Question 4

What does Heirloom do?

Accepted Answer

Heirloom accelerates the natural process of rock weathering — using crushed limestone to pull CO₂ from the atmosphere. Their approach achieves durable carbon removal at a fraction of the cost of other methods, with the first commercial facility operational in California.

Who funded Heirloom?

3 investors

Heirloom funding facts