# Graphenea funding: rounds and investors

> Graphenea has raised $3.7M across 2 rounds since 2013. Investors include EISMEA and Repsol Energy Ventures. Every round with its source.

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

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

# Who invested in *Graphenea*

2 rounds we have observed, with the 2 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Biotech

Funding summary Updated 26 Oct 2026

**$3.7M** raised across 2 rounds since 2013, from 2 sources

**$1.3M** Venture **$2.4M** Grant

- **Latest round:** Grant, $2.4M May 2018
- **Step-up i:** 1.9×
- **Investors:** 2

See who backed them

## The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2014 2015 2016 2017 2018

**$1.3M** Venture

**$2.4M** Grant

- **First round:** Venture, $1.3M
- **Biggest round:** $2.4M
- **Between rounds:** 4.4 years

## The rounds

- **May 2018** Grant **$2.4M** *1 new* [EISMEA](https://millionrounds.com/fund/eismea) Source recorded
- **Dec 2013** Venture **$1.3M** *1 new* [Repsol Energy Ventures](https://millionrounds.com/fund/repsol-energy-ventures) Reported by azonano.com

## Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

**Venture** 2013 **Grant** 2018 [EISMEA](https://millionrounds.com/fund/eismea) [Repsol Energy Ventures](https://millionrounds.com/fund/repsol-energy-ventures)

## Everyone who backed them

[EISMEA](https://millionrounds.com/fund/eismea) Investment firm **1** round

[Repsol Energy Ventures](https://millionrounds.com/fund/repsol-energy-ventures) Corporate VC **1** round

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

## Quick answers about Graphenea

### Who invested in Graphenea?

Graphenea's investors include EISMEA and Repsol Energy Ventures.

### How much has Graphenea raised?

Graphenea has raised $3.7M across 2 rounds since 2013.

### When did Graphenea last raise?

Graphenea's most recent round was a Grant of $2.4M in May 2018.

### What was Graphenea's biggest round?

Its most recent round, $2.4M in May 2018, is also its largest on record.

### Who backed Graphenea first?

Graphenea's first round on record, in Dec 2013, was backed by Repsol Energy Ventures.

### What stage is Graphenea at?

Graphenea's latest named round is a Grant, in May 2018.

### Where is Graphenea based?

Graphenea is based in the United States.

## Companies like Graphenea

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

[**Star Therapeutics** $325M · Oct 2026](https://millionrounds.com/company/star-therapeutics)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**Prolific Machines** $105M · Oct 2026](https://millionrounds.com/company/prolific-machines)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio)[**Clinical Ink** $24M · Oct 2026](https://millionrounds.com/company/clinical-ink)[**Rejuvenate Bio** $13M · Oct 2026](https://millionrounds.com/company/rejuvenate-bio)

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