# OpenLight funding: rounds and investors

> OpenLight has raised $84M across 2 rounds since 2025. Investors include Mayfield Fund. Every round with its source.

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

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

# Who invested in *OpenLight*

2 rounds we have observed, with the one investor 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.

Hardware & Electronics Robotics

Raised 7 months ago

Funding summary Updated 26 Oct 2026

**$84M** raised across 2 rounds since 2025, from 2 sources

**$34M** Series A **$50M** Series A

- **Latest round:** Series A, $50M Apr 2026
- **Step-up i:** 1.5×
- **Investors:** 1

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.

2026

**$34M** Series A

**$50M** Series A

- **First round:** Series A, $34M
- **Biggest round:** $50M
- **Between rounds:** 8 months

## The rounds

- **Apr 2026** Series A **$50M** *1 returning* [Mayfield Fund](https://millionrounds.com/fund/mayfield) Source recorded
- **Aug 2025** Series A **$34M** *1 new* [Mayfield Fund](https://millionrounds.com/fund/mayfield) Source recorded

## Everyone who backed them

[Mayfield Fund](https://millionrounds.com/fund/mayfield) VC firm **2** rounds

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

## Also claim to have backed them

This firm lists OpenLight 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.

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

## Quick answers about OpenLight

### Who invested in OpenLight?

OpenLight's investors include Mayfield Fund.

### How much has OpenLight raised?

OpenLight has raised $84M across 2 rounds since 2025.

### When did OpenLight last raise?

OpenLight's most recent round was a Series A of $50M in Apr 2026.

### What was OpenLight's biggest round?

Its most recent round, $50M in Apr 2026, is also its largest on record.

### Who backed OpenLight first?

OpenLight's first round on record, in Aug 2025, was backed by Mayfield Fund.

### What stage is OpenLight at?

OpenLight's latest named round is a Series A, in Apr 2026.

### Where is OpenLight based?

OpenLight is based in the United States.

## Companies like OpenLight

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

[**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**Promaxo** $106M · Oct 2026](https://millionrounds.com/company/promaxo)[**Optivolt** $37M · Oct 2026](https://millionrounds.com/company/optivolt)[**Arda** $233M · Oct 2026](https://millionrounds.com/company/arda)[**Kodama** $7.0M · Oct 2026](https://millionrounds.com/company/kodama)[**Tenstorrent** $3.0B · Oct 2026](https://millionrounds.com/company/tenstorrent)

## Find investors like these

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