argenx to Report First Quarter 2024 Financial Results and Business Update on May 9, 2024

May 2, 2024Amsterdam, the Netherlands – argenx (Euronext & Nasdaq: ARGX), a global immunology company committed to improving the lives of people suffering from severe autoimmune diseases, today announced that it will host a conference call and audio webcast on Thursday, May 9, 2024 at 2:30 PM CET (8:30 AM ET) to discuss its first quarter 2024 financial results and provide a business update.

A webcast of the live call may be accessed on the Investors section of the argenx website at argenx.com/investors. A replay of the webcast will be available on the argenx website for approximately one year following the presentation.

Dial-in numbers:

Belgium         32 800 50 201France                 33 800 943355Netherlands         31 20 795 1090United Kingdom 44 800 358 0970United States         1 800 715 9871Japan                 81 3 4578 9081Switzerland         41 43 210 11 32

Use the access code 1231519 to join the call. Please dial in 15 minutes prior to the live call.

About argenx

argenx is a global immunology company committed to improving the lives of people suffering from severe autoimmune diseases. Partnering with leading academic researchers through its Immunology Innovation Program (IIP), argenx aims to translate immunology breakthroughs into a world-class portfolio of novel antibody-based medicines. argenx developed and is commercializing the first approved neonatal Fc receptor (FcRn) blocker in the U.S., Japan, Israel, the EU, the UK, Canada and China. The Company is evaluating efgartigimod in multiple serious autoimmune diseases and advancing several earlier stage experimental medicines within its therapeutic franchises. For more information, visit www.argenx.com and follow us on LinkedIn, X/Twitter, Instagram, Facebook, and YouTube.

For further information, please contact:

Media:

Ben [e-mail]

Investors:

Alexandra Roy (US)[e-mail]

Lynn Elton (EU)[e-mail]