# Ionworks funding: rounds and investors

> Ionworks has raised $500K across 1 round since 2024. Investors include Y Combinator. Every round with its source.

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

United States · [Pre-seed startup](https://millionrounds.com/companies)

# Who invested in *Ionworks*

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

**$500K** raised across 1 round since 2024, from 1 source

- **Latest round:** Pre-seed, $500K Sept 2024
- **Investors:** 1

See who backed them

## The rounds

- **Sept 2024** Pre-seed **$500K** [Y Combinator](https://millionrounds.com/fund/y-combinator) Source recorded

## Founders and team

From Ionworks's own website: 2 founders.

**Valentin Sulzer** Co-founder & CEO

**Rob Timms** Co-founder & CTO

Advisers *Ferran Brosa-Planella* *Mark Verbrugge* *Venkat Viswanathan*

## Everyone who backed them

[Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **1** round

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

## Also claim to have backed them

This firm lists Ionworks as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

[Lobster Capital](https://millionrounds.com/fund/lobster-capital) VC firm Per its own site

## Quick answers about Ionworks

### Who invested in Ionworks?

Ionworks's investors include Y Combinator.

### How much has Ionworks raised?

Ionworks has raised $500K across 1 round since 2024.

### When did Ionworks last raise?

Ionworks's most recent round was a Pre-seed of $500K in Sept 2024.

### What was Ionworks's biggest round?

Its most recent round, $500K in Sept 2024, is also its largest on record.

### Who backed Ionworks first?

Ionworks's first round on record, in Sept 2024, was backed by Y Combinator.

### What stage is Ionworks at?

Ionworks's latest named round is a Pre-seed, in Sept 2024.

### Where is Ionworks based?

Ionworks is based in the United States.

## Companies like Ionworks

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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