Join us in shaping a stronger future for OSE.

OSE deserves a leadership worthy of its potential.

We are a group of committed shareholders, including the company’s co-founders, united to realign OSE Immunotherapeutics on a responsible, ambitious, and sustainable course.

In response to what we see as a risky and value-destructive strategy, we propose a new governance and a clear plan:

  • preserve cash
  • build strong partnerships
  • protect R&D capabilities
  • and strengthen key assets

Dominique Costantini

Emile Loria

Alexis Peyroles

News

NOTE TO THE SHAREHOLDERS OF OSE IMMUNOTHERAPEUTICS

Paris (France), on June 20, 2025. Dear shareholders, We, Mrs. Dominique Costantini, Mr. Emile Loria and Mr. Alexis Peyroles, hereby inform the shareholders of OSE Immunotherapeutics SA (ISIN: FR0012127173; Mnemo:…

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1536 1024 OSE-AG25

Open letter to the OSE Immunotherapeutics Shareholders

Dear OSE Immunotherapeutics Shareholders, As co-founders and former directors of OSE Immunotherapeutics,…

600 400 OSE-AG25

Analysis Ose Immuno – May 07th 2025

Lionel Labourdette, PhD Données de la phase de maintenance : des signes…

1170 760 OSE-AG25

Contact us

If you would like more information about the 2025 General meeting, or any other request, please do not hesitate to contact us.