Code of Business Conduct and Ethics

We adopted a Code of Business Conduct and Ethics (Code of Conduct), that is applicable to all of our employees and directors. Our Code of Conduct translates the core values into a set of clear standards to help guide our conduct as we navigate the complexities of the highly regulated and competitive global marketplace in which we operate as we work to become an independent, fully integrated, and global immunology company. Its purpose is not to exhaustively list all the behaviors we as a company expect from each other. Rather, the Code of Conduct contains key principles for us to live by as individuals, to ensure that we maximally contribute to argenx’s collective success. [As part of their onboarding, all employees receive a training on the Code of Conduct and the Directors receive a copy of the Code of Conduct and need to comply with its terms.] The Code of Conduct is available on our website at www.argenx.com/investors/governance/rules-codes-compliance. The Audit and Compliance Committee of our Board of Directors (i) is responsible for overseeing and evaluating the Code of Conduct and (ii) is required to approve any waivers of the Code of Conduct for employees and directors. The Audit and Compliance Committee has not received requests for material waivers of the Code of Conduct in the financial year 2025. We expect that any amendments to the Code of Conduct, and any waivers of its requirements, will be disclosed on our website.