Argenx Appoints CEO to Chairman Role; COO Named Successor

01:22 AM EST, 01/05/2026 (MT Newswires) -- Argenx (ARGX.BR) appointed Chief Executive Officer Tim Van Hauwermeiren as chairman to succeed Peter Verhaeghe. The immunology company named Chief Operating Officer Karen Massey as Hauwermeiren's successor as CEO, according to a Monday release. Both appointments are subject to shareholder clearance at the company's May 6 annual general meeting.