# Arc Suppression Technologies funding: rounds and investors

> Arc Suppression Technologies has raised $1.9M across 1 round since 2022. Investors include Cleantech Open. Every round with its source.

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

[Venture startup](https://millionrounds.com/companies)

# Who invested in *Arc Suppression Technologies*

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.

Hardware & Electronics

Funding summary Updated 26 Oct 2026

**$1.9M** raised across 1 round since 2022, from 1 source

- **Latest round:** Venture, $1.9M Jan 2022
- **Investors:** 1

See who backed them

## The rounds

- **Jan 2022** Venture **$1.9M** [Cleantech Open](https://millionrounds.com/fund/cleantech-open) Source recorded SEC filing: $1.9M sold, first sale Dec 2019

## Founders and team

From Arc Suppression Technologies's own website and the SEC filings it signed: 2 founders, 3 on the team.

**Bob Thorbus** Founder, Chief Manager, President, and CEO

**Reinhold P. Henke** Founder and Chief Technology Officer *Named on its 2022 Form D*

- **Warren P. Kahle** Chief Operations Officer and Engineering Technologist
- **Jon P. Brusven** Executive Officer, Director i
- **Robert P. Thorbus** Executive Officer, Director i

## Everyone who backed them

[Cleantech Open](https://millionrounds.com/fund/cleantech-open) Accelerator **1** round

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

## Quick answers about Arc Suppression Technologies

### Who invested in Arc Suppression Technologies?

Arc Suppression Technologies's investors include Cleantech Open.

### How much has Arc Suppression Technologies raised?

Arc Suppression Technologies has raised $1.9M across 1 round since 2022.

### When did Arc Suppression Technologies last raise?

Arc Suppression Technologies's most recent round was a Venture of $1.9M in Jan 2022.

### What was Arc Suppression Technologies's biggest round?

Its most recent round, $1.9M in Jan 2022, is also its largest on record.

### Who backed Arc Suppression Technologies first?

Arc Suppression Technologies's first round on record, in Jan 2022, was backed by Cleantech Open.

### What stage is Arc Suppression Technologies at?

Arc Suppression Technologies's latest named round is a Venture, in Jan 2022.

## Companies like Arc Suppression Technologies

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

[**Positron AI** $875M · Sept 2026](https://millionrounds.com/company/positron-ai)[**TYLsemi** $43M · Jul 2026](https://millionrounds.com/company/tylsemi)[**OXMIQ Labs** $35M · Jul 2026](https://millionrounds.com/company/oxmiq-labs)[**Laser Link** $73M · Mar 2026](https://millionrounds.com/company/laser-link)[**PaXini Tech** $145M · Mar 2026](https://millionrounds.com/company/paxini-tech)[**Home Essentials** $7.7M · Feb 2026](https://millionrounds.com/company/home-essentials)

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