# Aymium funding: rounds and investors

> Aymium has raised $50M across 1 round since 2024. Investors include Fortress Investment. Every round with its source.

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

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

# Who invested in *Aymium*

One round we have observed, with the one investor 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.

Energy

Funding summary Updated 26 Oct 2026

**$50M** raised across 1 round since 2024, from 1 source

- **Latest round:** Debt, $50M Jun 2024
- **Investors:** 1

See who backed them

## The rounds

- **Jun 2024** Debt **$50M** [Fortress Investment](https://millionrounds.com/fund/fortress-investment-group) Source recorded

## Founders and team

From Aymium's own website: 1 founder, 9 on the team.

**James A. Mennell** Founder and Chief Executive Officer

- **Dr. Daren Daugaard** Vice President of Thermal Engineering
- **Erin Heupel** Vice President of Environmental Management
- **Thomas J. Hirt** Vice President of Major Capital Projects
- **Todd Smrekar** Vice President of Procurement
- **Douglas Rohall** Chief Financial Officer and Chief Strategy Officer
- **Jean-Michel Malek** Chief Legal Officer
- **Dr. Edgar Lotero** R&D Fellow & Lead Chemist
- **Dustin Slack** Director of Innovation
- **Eric O. Estep** Director of Logistics

## Everyone who backed them

[Fortress Investment](https://millionrounds.com/fund/fortress-investment-group) Private equity **1** round

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

## Quick answers about Aymium

### Who invested in Aymium?

Aymium's investors include Fortress Investment.

### How much has Aymium raised?

Aymium has raised $50M across 1 round since 2024.

### When did Aymium last raise?

Aymium's most recent round was a Debt of $50M in Jun 2024.

### What was Aymium's biggest round?

Its most recent round, $50M in Jun 2024, is also its largest on record.

### Who backed Aymium first?

Aymium's first round on record, in Jun 2024, was backed by Fortress Investment.

### What stage is Aymium at?

Aymium's latest named round is a Debt, in Jun 2024.

### Where is Aymium based?

Aymium is based in the United States.

## Companies like Aymium

In the same sector, and raised in the last eighteen months.

[**Amogy** $125M · Oct 2026](https://millionrounds.com/company/amogy)[**LanzaJet** $67M · Oct 2026](https://millionrounds.com/company/lanzajet)[**Pivot Energy** $500M · Oct 2026](https://millionrounds.com/company/pivot-energy)[**Peak Energy** $163M · Oct 2026](https://millionrounds.com/company/peak-energy)[**Pennsylvania American Water** $43M · Oct 2026](https://millionrounds.com/company/pennsylvania-american-water)[**Vertical Semiconductor** $84M · Oct 2026](https://millionrounds.com/company/vertical-semiconductor)

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