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 summaryUpdated 15 Nov 2026

$6.8Mraised across 3 rounds since 2024, from 3 sources

$2.0MRound$837KRound$4.0MRound

Latest round: Round, $4.0MJun 2026
Step-upi: 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.

20252026

$2.0MRound$837KRound$4.0MRound

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$4.0MUK share allotment
Mar 2025$837KUK share allotment
Oct 2024$2.0MUK share allotment

Founders and team

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

Jérôme MarzinskiCEO
David PrestonFinance Director
Dr Calum CrakeTechnical Director
Dr Cliff RoweDevelopment Director
Dr Matthew FrohnBoard Member
George RobinsonBoard 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.