# FairWarning funding: rounds and investors

> FairWarning has raised $60M across 1 round since 2018. Investors include Mainsail Partners. Every round with its source.

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

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

# Who invested in *FairWarning*

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.

Cybersecurity

Funding summary Updated 26 Oct 2026

**$60M** raised across 1 round since 2018, from 1 source

- **Latest round:** Round, $60M Jun 2018
- **Investors:** 1

See who backed them

## The rounds

- **Jun 2018** Round **$60M** [Mainsail Partners](https://millionrounds.com/fund/mainsail-partners) Reported by FinSMEs

## 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=fairwarning).

## Quick answers about FairWarning

### Who invested in FairWarning?

FairWarning's investors include Mainsail Partners.

### How much has FairWarning raised?

FairWarning has raised $60M across 1 round since 2018.

### When did FairWarning last raise?

FairWarning's most recent round was an Undisclosed round of $60M in Jun 2018.

### What was FairWarning's biggest round?

Its most recent round, $60M in Jun 2018, is also its largest on record.

### Who backed FairWarning first?

FairWarning's first round on record, in Jun 2018, was backed by Mainsail Partners.

### What stage is FairWarning at?

FairWarning's latest named round is an Undisclosed round, in Jun 2018.

### Where is FairWarning based?

FairWarning is based in the United States.

## Companies like FairWarning

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

[**FORT Robotics** $39M · Oct 2026](https://millionrounds.com/company/fort-robotics)[**Opsin** $21M · Oct 2026](https://millionrounds.com/company/opsin)[**Harmonic Security** $68M · Oct 2026](https://millionrounds.com/company/harmonic-security)[**Reach Security** $60M · Oct 2026](https://millionrounds.com/company/reach-security)[**Persona** $210M · Oct 2026](https://millionrounds.com/company/persona)[**Hilt** $4.7M · Oct 2026](https://millionrounds.com/company/hilt)

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