# Heirloom Cloud Corporation funding: rounds and investors

> Heirloom Cloud Corporation has raised $5K across 1 round since 2025. Investors include National Science Foundation, Breakthrough Energy and Lowercarbon Capital.

Source: https://millionrounds.com/company/heirloom-cloud-corporation (Millionrounds; every figure on the page links to its filing or article)

United States · [Funded startup](https://millionrounds.com/companies)

# Who invested in *Heirloom Cloud Corporation*

One round we have observed, with the 4 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

AI

Raised 11 months ago

Funding summary Updated 26 Oct 2026

**$5K** raised across 1 round since 2025, from 2 sources

- **Latest round:** Grant, $5K Dec 2025
- **Investors:** 4

See who backed them

## The rounds

- **Dec 2025** Grant **$5K** [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) [Breakthrough Energy](https://millionrounds.com/fund/breakthrough-energy) [Lowercarbon Capital](https://millionrounds.com/fund/lowercarbon-capital) [South Carolina Research Authority](https://millionrounds.com/fund/south-carolina-research-authority) Source recorded and 1 other

## Founders and team

From the SEC filings it signed: 2 on the team.

- **Geoffrey Weber** Executive Officer, Director i
- **John Rahaghi** Executive Officer i

On the board, as filed i *Nancy Weber* *Nathaniel Weber*

## Everyone who backed them

[National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) Government **1** round

[Breakthrough Energy](https://millionrounds.com/fund/breakthrough-energy) VC firm **1** round

[Lowercarbon Capital](https://millionrounds.com/fund/lowercarbon-capital) VC firm **1** round

[South Carolina Research Authority](https://millionrounds.com/fund/south-carolina-research-authority) Corporate VC **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=heirloom-cloud-corporation).

## Quick answers about Heirloom Cloud Corporation

### Who invested in Heirloom Cloud Corporation?

Heirloom Cloud Corporation's investors include National Science Foundation, Breakthrough Energy, Lowercarbon Capital and South Carolina Research Authority.

### How much has Heirloom Cloud Corporation raised?

Heirloom Cloud Corporation has raised $5K across 1 round since 2025.

### When did Heirloom Cloud Corporation last raise?

Heirloom Cloud Corporation's most recent round was a Grant of $5K in Dec 2025.

### What was Heirloom Cloud Corporation's biggest round?

Its most recent round, $5K in Dec 2025, is also its largest on record.

### Who backed Heirloom Cloud Corporation first?

Heirloom Cloud Corporation's first round on record, in Dec 2025, was backed by National Science Foundation, Breakthrough Energy and Lowercarbon Capital and 1 others.

### What stage is Heirloom Cloud Corporation at?

Heirloom Cloud Corporation's latest named round is a Grant, in Dec 2025.

### Where is Heirloom Cloud Corporation based?

Heirloom Cloud Corporation is based in the United States.

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