# ClearNote Health funding: rounds and investors

> ClearNote Health has raised $52M across 1 round since 2026. Investors include Mattias Westman, Dr Stephen Quake and Sandy Weill. Every round with its source.

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

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

# Who invested in *ClearNote Health*

One round we have observed, with the 4 investors 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.

AI Biotech Healthcare Medical Devices

Raised 5 months ago

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Funding summary Updated 7 Nov 2026

**$52M** raised across 1 round since 2026, from 1 source

- **Latest round:** Series D, $52M May 2026
- **Led by:** Mattias Westman
- **Investors:** 4 (1 led)

See who backed them

## The rounds

- **May 2026** Series D **$52M** [Mattias Westman](https://millionrounds.com/fund/mattias-westman) Lead [Dr Stephen Quake](https://millionrounds.com/fund/dr-stephen-quake) [Sandy Weill](https://millionrounds.com/fund/sandy-weill) [Seattle based family office](https://millionrounds.com/fund/seattle-based-family-office) Reported by Ventureburn

## Funding filed with regulators

ClearNote Health filed one raise, $22M in all. Filings say how much was sold and to how many investors; they never name the investors.

- May 2025 **$22M** 5 investors of $61M offered SEC Form D

## Founders and team

From ClearNote Health's own website: 3 on the team.

- **Kevin Keegan** Chief Executive Officer
- **Irene Hsieh** Vice President of Regulatory Affairs
- **Erik Duffy** Head of Market Access

## Everyone who backed them

[Mattias Westman](https://millionrounds.com/fund/mattias-westman) Angel **1** round, led 1

[Dr Stephen Quake](https://millionrounds.com/fund/dr-stephen-quake) Growth equity **1** round

[Sandy Weill](https://millionrounds.com/fund/sandy-weill) Growth equity **1** round

[Seattle based family office](https://millionrounds.com/fund/seattle-based-family-office) Family office **1** round

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

## Quick answers about ClearNote Health

### Who invested in ClearNote Health?

ClearNote Health's investors include Mattias Westman, Dr Stephen Quake, Sandy Weill and Seattle based family office. Mattias Westman led its latest round.

### How much has ClearNote Health raised?

ClearNote Health has raised $52M across 1 round since 2026.

### When did ClearNote Health last raise?

ClearNote Health's most recent round was a Series D of $52M in May 2026, led by Mattias Westman.

### What was ClearNote Health's biggest round?

Its most recent round, $52M in May 2026, is also its largest on record.

### Who backed ClearNote Health first?

ClearNote Health's first round on record, in May 2026, was backed by Mattias Westman, Dr Stephen Quake and Sandy Weill and 1 others.

### What stage is ClearNote Health at?

ClearNote Health's latest named round is a Series D, in May 2026.

### Where is ClearNote Health based?

ClearNote Health is based in the United States.

### Who led ClearNote Health's rounds?

Mattias Westman led the Series D in 2026.

## Companies like ClearNote Health

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

[**Thinking Machines Lab** $9.0B · Nov 2026](https://millionrounds.com/company/thinking-machines-lab)[**Endogenex** $270M · Nov 2026](https://millionrounds.com/company/endogenex)[**Shield AI** $6.0B · Nov 2026](https://millionrounds.com/company/shield-ai)[**Luminoah** $31M · Nov 2026](https://millionrounds.com/company/luminoah)[**CARI Health** $3.1M · Nov 2026](https://millionrounds.com/company/cari-health)[**Uncovr** $12M · Nov 2026](https://millionrounds.com/company/uncovr)

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