| Company Name [asc] | Country |
|---|---|
| NuBiopeutics Ireland Limited | Ireland |
| NuLife B.V. | Netherlands |
| Nuvation Bio Ireland Limited | Ireland |
| NWPharmaTech GmbH | Austria |
| Nykode Therapeutics ASA | Norway |
| O.S.K. LEDPHARM LTD | Cyprus |
| O11 biomedical GmbH | Germany |
| OBA-Pharma ApS | Denmark |
| Oblita Therapeutics | Belgium |
| OC Vigilance SL | Spain |
| Ocugen Limited | Ireland |
| Oculis ehf. | Iceland |
| ODDIFACT | France |
| Odimma Therapeutics | France |
| OGD2 Pharma | France |
| Olavide Neuron STX S.L. | Spain |
| Olikla s.r.o. | Czech Republic |
| Oloker Therapeutics srl | Italy |
| OMEICOS Therapeutics GmbH | Germany |
| Omeros Ireland Limited | Ireland |
| Omet Pharma AB | Sweden |
| Omnicin Therapeutics BV | Netherlands |
| OmniSpirant Limited | Ireland |
| Ona Therapeutics | Spain |
| ONCO-EUROPE Kft. | Hungary |
| Oncodesign Precision Medicine | France |
| Oncoelectronics SAS | France |
| Oncoheroes Biosciences Europe, S.L. | Spain |
| Oncoinvent AS | Norway |
| OncoLize B.V. | Netherlands |
| Oncopeptides AB (publ) | Sweden |
| Oncoral Pharma ApS | Denmark |
| Oncorena AB | Sweden |
| Oncoscience GmbH | Germany |
| Oncostellae S.L. | Spain |
| OncoZenge AB | Sweden |
| One-carbon Therapeutics AB | Sweden |
| OneChain Immunotherapeutics, S.L. | Spain |
| Oniria Therapeutics S.L. | Spain |
| Onkogen Kft. | Hungary |
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