PRESS RELEASE

INNATE PHARMA TO HOST CONFERENCE CALL AND WEBCAST ON SEPTEMBER 17 FOR FIRST HALF 2026 FINANCIAL RESULTS AND BUSINESS UPDATE

Marseille, France, September 10, 2026, 7:00 AM CEST

Innate Pharma SA (Euronext Paris: IPH; Nasdaq: IPHA) (“Innate” or the “Company”), today announced that the Company will hold a conference call on Thursday, September 17, 2026 at 2:00 p.m. CEST / 8:00 a.m. EDT, to provide a business update for the first half of 2026.

Participants in the call will be:

• Jonathan Dickinson, Chief Executive Officer
• Markus Jensen, Vice President, Chief Medical Officer
• Yannis Morel, Executive Vice President, Chief Operating Officer
• Frédéric Lombard, Senior Vice President, Chief Financial Officer

Event Details

• Date and time: September 17, 2026, at 2:00 p.m. CEST / 8:00 a.m. EDT
• Webcast link: Click here
• Conference call link: Click here

This information is also available on the Investors section of the Innate Pharma website, www.innate-pharma.com. A replay of the webcast will be available on the Company website for 90 days following the event.

About Innate Pharma

Innate Pharma S.A. is a global, clinical-stage biotechnology company developing immunotherapies for cancer patients. Leveraging its expertise on antibody engineering and innovative target identification, Innate Pharma is developing innovative and differentiated next generation antibody therapeutics.

Innate Pharma is advancing a portfolio of differentiated potential first- and/or best-in-class assets, focused on areas of high unmet medical need. Its proprietary pipeline is centered on antibody-drug conjugates (ADCs), led by IPH4502, a differentiated Nectin-4 ADC in clinical development for solid tumors, and supported by a preclinical portfolio of next-generation ADC candidates. In parallel, Innate is advancing two partnered late-stage assets: lacutamab, developed with Sobi for cutaneous T-cell lymphomas, and monalizumab, developed with AstraZeneca for non-small cell lung cancer (NSCLC).

Innate Pharma has established collaborations with leading biopharmaceutical companies, including Sobi, Sanofi and AstraZeneca, as well as renowned academic and research institutions, to advance innovation in immuno-oncology.

Headquartered in Marseille, France, Innate Pharma is listed on Euronext Paris and Nasdaq in the US.

Learn more about Innate Pharma at www.innate-pharma.com and follow us on LinkedIn and X.

Information about Innate Pharma shares

ISIN code: FR0010331421
Ticker code: Euronext Paris: IPH | Nasdaq: IPHA
LEI: 9695002Y8420ZB8HJE29

Disclaimer on forward-looking information and risk factors

For a discussion of risks and uncertainties, please refer to the Risk Factors (“Facteurs de Risque") section of the Universal Registration Document filed with the French Financial Markets Authority (“AMF”), which is available on the AMF website http://www.amf-france.org or on Innate Pharma’s website, and public filings and reports filed with the U.S. Securities and Exchange Commission (“SEC”), including the Company’s Annual Report on Form 20-F for the year ended December 31, 2025, and subsequent filings and reports filed with the AMF or SEC, or otherwise made public by the Company. References to the Company’s website and the AMF website are included for information only and the content contained therein, or that can be accessed through them, are not incorporated by reference into, and do not constitute a part of, this press release.

This press release and the information contained herein do not constitute an offer to sell or a solicitation of an offer to buy or subscribe to shares in Innate Pharma in any country.

Contacts

Stéphanie Cornen
VP, Investor Relations & Corporate Communications
stephanie.cornen@innate-pharma.fr

Investor Relations
investors@innate-pharma.fr

Media
communication@innate-pharma.fr