argenx to host conference call & webcast to report fourth quarter business update and full year 2017 financial results on March 1, 2018

News
February 21, 2018

Breda, the Netherlands / Ghent, Belgium argenx (Euronext & Nasdaq: ARGX), a clinical-stage biotechnology company developing a deep pipeline of differentiated antibody-based therapies for the treatment of severe autoimmune diseases and cancer, today announced it will host a conference call and audio webcast on Thursday, March 1, 2018 at 3:00 pm CET (9:00 am ET) to discuss its 2017 financial results and provide a fourth quarter business update.

To participate in the conference call, please select your phone number below, and use the confirmation code 6683242. The webcast may be accessed on the homepage of the argenx website at www.argenx.com or by clicking here. A replay of the webcast will also be available at the argenx website.


About argenx

argenx a clinical-stage biotechnology company with a deep pipeline of differentiated antibody-based therapies intended for the treatment of severe auto-immune diseases and cancer. We are focused on developing product candidates that are either first-in-class against novel targets or best-in-class against known, but complex, targets to treat diseases with a significant unmet medical need. Our ability to execute on this focus is enabled by our suite of differentiated technologies. Our SIMPLE AntibodyTM Platform, based on the powerful llama immune system, allows us to exploit novel and complex targets, and our three antibody engineering technologies enable us to expand the therapeutic index of our product candidates.

www.argenx.com

Dial-in numbers:

Please dial in 5–10 minutes prior to 3 p.m. CET/ 9 a.m. EDT using the number and conference ID below.

Confirmation Code: 6683242

Belgium 0800 58228

Belgium +32 (0)2 404 0659

France 0805 101 219

France +33 (0)1 76 77 22 74

Netherlands 0800 023 1436

Netherlands +31 (0) 20 721 9251

United Kingdom 0800 358 6377

United Kingdom +44 (0)330 336 9105

United States 888-394-8218

United States +1 323-794-2149

A question and answer session will follow the presentation of the results. Go to www.argenx.com to access the live audio webcast. The archived webcast will also be available (90 days) for replay shortly after the close of the call from the Downloads section of the argenx website.

For further information, please contact:

Joke Comijn, Corporate Communications Manager

+32 (0)477 77 29 44

+32 (0)9 243 40 70

info@argenx.com

Beth DelGiacco (US IR)

Stern Investor Relations

+1 212 362 1200

beth@sternir.com

Forward-looking Statements

The contents of this announcement include statements that are, or may be deemed to be, forward-looking statements. These forward-looking statements can be identified by the use of forward-looking terminology, including the terms believes, estimates, anticipates, expects, intends, may, will, or should, and include statements argenx makes concerning the encouraging clinical data; argenx’s advancement of, and anticipated clinical development and regulatory milestones and plans; and the intended results of its strategy. By their nature, forward-looking statements involve risks and uncertainties and readers are cautioned that any such forward-looking statements are not guarantees of future performance. argenx’s actual results may differ materially from those predicted by the forward-looking statements as a result of various important factors, including argenx’s expectations regarding its the inherent uncertainties associated with competitive developments, preclinical and clinical trial and product development activities and regulatory approval requirements; argenx’s reliance on collaborations with third parties; estimating the commercial potential of argenx’s product candidates; argenx’s ability to obtain and maintain protection of intellectual property for its technologies and drugs; argenx’s limited operating history; and argenx’s ability to obtain additional funding for operations and to complete the development and commercialization of its product candidates. A further list and description of these risks, uncertainties and other risks can be found in argenx’s U.S. Securities and Exchange Commission (SEC) filings and reports, including in the final prospectus related to argenx’s U.S. public offering filed with the SEC pursuant to Rule 424(b) of the Securities Act of 1933, as amended, as well as subsequent filings and reports filed by argenx with the SEC. Given these uncertainties, the reader is advised not to place any undue reliance on such forward-looking statements. These forward-looking statements speak only as of the date of publication of this document. argenx undertakes no obligation to publicly update or revise the information in this press release, including any forward-looking statements, except as may be required by law.