12534364 · Active · incorporated 6 years, 6 months ago · London
Medtech B2B Diagnostics Healthcare Platform Series B+
Develops point-of-care diagnostic and extraction solutions for rapid, multi-pathogen infectious disease detection.
Protondx is a private limited company registered at Companies House under number 12534364, incorporated on 25 March 2020, with a registered office in London. Its current status on the register is active. Its filed nature of business is manufacture of medical and dental instruments and supplies (SIC 32500). Sonde has indexed 53 filings for this company, including 5 funding rounds. Its most recent round closed in February 2026, raising £1.9m.
| Round | Closed | Raised | Price per share |
|---|---|---|---|
| Round 5 | Feb 2026 | £1.9m | £188.00 |
| Round 4 | Nov 2023 | £4.3m | £160.00 |
| Round 3 | Jan 2023 | £2.7m | £160.00 |
| Round 2 | Jun 2022 | £2.1m | £72.68 |
| Round 1 | Dec 2020 | £250k | £22.72 |
Showing the 12 most recent of 53 filings.
See the complete cap table with every shareholder, founder tags, dilution across 16 share allotments, round-by-round fundraising history, and the full filing timeline — parsed from official Companies House documents.
Create a free account Sign inFree accounts open 3 companies in full detail — no card required.