Earlybird Health and Merieux Equity Partners increase Prothea stakes
Published
Edinburgh-based Prothea Technologies has seen its primary institutional investors increase their positions by 82 percent. Founded in 2021, the company develops an AI-driven platform that combines lung-cancer biopsy and immediate therapy into a single procedure to streamline diagnosis and treatment.
The most recent confirmation statement, covering the period to 13 June 2026, shows that Earlybird Health II Fund GmbH & Co. KG and Merieux Equity Partners SAS, acting for OMX Europe Venture Fund, both increased their holdings. Each investor moved from 314,285 shares to 571,427 Series A shares of £0.001. Earlybird Health II Fund is also a shareholder in Grey Wolf Therapeutics and Portal Biotech.
Old College Capital LP also increased its stake by 82 percent, rising from 21,607 shares to 39,285 Series A shares of £0.001. The firm also backs Auris Tech and Sofant Technologies. These simultaneous increases across multiple institutional shareholders may signal a recent funding round.
Other existing shareholders remaining on the cap table include Old College Capital Holdings Limited, which maintains a holding of 240,000 shares. Prothea Technologies is currently conducting its Precision Lung clinical study to support clinicians delivering lung-cancer care.
Shareholder data
Source: Companies House confirmation statement (CS01) — period to , filed .
Changes in this confirmation statement
| Type | Shareholder | Shares | Change | Share classes |
|---|---|---|---|---|
| Increased | EARLYBIRD HEALTH II FUND GMBH & CO. KG | 571,427 | +82% | SERIES A SHARES OF 0.001 571,427 |
| Increased | MERIEUX EQUITY PARTNERS SAS, AS DIRECTOR ON BEHALF OF OMX EUROPE VENTURE FUND | 571,427 | +82% | SERIES A SHARES OF 0.001 571,427 |
| Increased | OLD COLLEGE CAPITAL LP | 39,285 | +82% | SERIES A SHARES OF 0.001 39,285 |
Current shareholders (4)
| Shareholder | Total shares | Share classes |
|---|---|---|
| EARLYBIRD HEALTH II FUND GMBH & CO. KG | 571,427 | SERIES A SHARES OF 0.001 571,427 |
| MERIEUX EQUITY PARTNERS SAS, AS DIRECTOR ON BEHALF OF OMX EUROPE VENTURE FUND | 571,427 | SERIES A SHARES OF 0.001 571,427 |
| OLD COLLEGE CAPITAL HOLDINGS LIMITED | 240,000 | ORDINARY SHARES OF 0.001 240,000 |
| OLD COLLEGE CAPITAL LP | 39,285 | SERIES A SHARES OF 0.001 39,285 |
Contact the editorial team at [email protected]