# Bio-Optonics funding: rounds and investors

> Bio-Optonics has raised $30M across 1 round since 2018. Investors include Mainsail Partners. Every round with its source.

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

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

# Who invested in *Bio-Optonics*

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.

Biotech Healthcare

Funding summary Updated 26 Oct 2026

**$30M** raised across 1 round since 2018, from 1 source

- **Latest round:** Round, $30M Jan 2018
- **Investors:** 1

See who backed them

## The rounds

- **Jan 2018** Round **$30M** [Mainsail Partners](https://millionrounds.com/fund/mainsail-partners) Reported by Prweb

## Everyone who backed them

[Mainsail Partners](https://millionrounds.com/fund/mainsail-partners) Private equity **1** round

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

## Quick answers about Bio-Optonics

### Who invested in Bio-Optonics?

Bio-Optonics's investors include Mainsail Partners.

### How much has Bio-Optonics raised?

Bio-Optonics has raised $30M across 1 round since 2018.

### When did Bio-Optonics last raise?

Bio-Optonics's most recent round was an Undisclosed round of $30M in Jan 2018.

### What was Bio-Optonics's biggest round?

Its most recent round, $30M in Jan 2018, is also its largest on record.

### Who backed Bio-Optonics first?

Bio-Optonics's first round on record, in Jan 2018, was backed by Mainsail Partners.

### What stage is Bio-Optonics at?

Bio-Optonics's latest named round is an Undisclosed round, in Jan 2018.

### Where is Bio-Optonics based?

Bio-Optonics is based in the United States.

## Companies like Bio-Optonics

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)[**AI** $18M · Oct 2026](https://millionrounds.com/company/ai)[**Baba** $40M · Oct 2026](https://millionrounds.com/company/baba)[**IMIO** $19M · Oct 2026](https://millionrounds.com/company/imio)

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