Transgene

Report Publication Announcement • Sep 16, 2025

PRESS RELEASE

Availability of Transgene's Half-Year Financial Report as of June 30, 2025

Strasbourg, September 16, 2025 - 05:45 pm CET

TRANSGENE (Paris: TNG) today announced that it has made available to the public and filed with the Autorité des marchés financiers its half-year financial report as of June 30, 2025.

The document is available on the Company's website: www.transgene.fr, in the "Investors/Financial information" section.

This report comprises the following documents:

• 2025 half-year financial statements;
• Half-year management report;
• Statutory Auditors' report on the 2025 half-year financial statements;
• Declaration by the person responsible for this half-year financial report.

Contacts

Media:

Caroline Tosch Corporate and Scientific Communications Manager +33 3 68 33 27 38 communication@transgene.fr

Investors & Analysts:

Nadège Bartoli Investor Relations Analyst and Financial Communication Officer +33 3 88 27 91 03

Lucie Larguier Chief Financial Officer +33 3 88 27 91 00 investorrelations@transgene.fr