# OxSonics funding: rounds and investors

> OxSonics has raised $6.8M across 3 rounds since 2024. Every round with its source.

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

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

# Who invested in *OxSonics*

3 rounds we have observed, with the 0 investors 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.

Medical Devices

Raised 5 months ago

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Funding summary Updated 15 Nov 2026

**$6.8M** raised across 3 rounds since 2024, from 3 sources

**$2.0M** Round **$837K** Round **$4.0M** Round

- **Latest round:** Round, $4.0M Jun 2026
- **Step-up i:** 4.7×
- **Investors:** 0

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.

2025 2026

**$2.0M** Round

**$837K** Round

**$4.0M** Round

- **First round:** Round, $2.0M
- **Biggest round:** $4.0M
- **Usual gap between rounds:** 16 months

## The rounds

- **Jun 2026** Round **$4.0M** No investor was named in the report. Shares issued, filed with Companies House (SH01); no report of this raise yet
- **Mar 2025** Round **$837K** No investor was named in the report. Shares issued, filed with Companies House (SH01); no report of this raise yet
- **Oct 2024** Round **$2.0M** No investor was named in the report. Shares issued, filed with Companies House (SH01); no report of this raise yet

## Funding filed with regulators

OxSonics filed 3 raises, $6.8M in all. Filings say how much was sold and to how many investors; they never name the investors.

- Jun 2026 **$4.0M** UK share allotment
- Mar 2025 **$837K** UK share allotment
- Oct 2024 **$2.0M** UK share allotment

## Founders and team

From OxSonics's own website: 6 on the team.

- **Jérôme Marzinski** CEO
- **David Preston** Finance Director
- **Dr Calum Crake** Technical Director
- **Dr Cliff Rowe** Development Director
- **Dr Matthew Frohn** Board Member
- **George Robinson** Board Member

## Also claim to have backed them

This firm lists OxSonics 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.

[Longwall Ventures](https://millionrounds.com/fund/longwall-ventures) VC firm Per its own site

## Quick answers about OxSonics

### How much has OxSonics raised?

OxSonics has raised $6.8M across 3 rounds since 2024.

### When did OxSonics last raise?

OxSonics's most recent round, $4.0M, was in Jun 2026.

### What was OxSonics's biggest round?

Its most recent round, $4.0M in Jun 2026, is also its largest on record.

### Where is OxSonics based?

OxSonics is based in the United Kingdom.

## Companies like OxSonics

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

[**1nhaler** $7.4M · Nov 2026](https://millionrounds.com/company/1nhaler)[**Coherence Neuro** $55M · Oct 2026](https://millionrounds.com/company/coherence-neuro)[**Respiratory Analytics** $2.8M · Oct 2026](https://millionrounds.com/company/respiratory-analytics)[**CMR Surgical** $1.1B · Oct 2026](https://millionrounds.com/company/cmr-surgical)[**Living Optics** $61M · Oct 2026](https://millionrounds.com/company/living-optics)[**Lucida Medical** $17M · Sept 2026](https://millionrounds.com/company/lucida-medical)

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