Executive Committee of Galapagos NV

Composition of the Executive Committee

As of December 31, 2025, our Executive Committee consisted of the following members:

• Henry Gosebruch – Please refer to the Composition of the Board of Directors for a biography.

Aaron Cox

joined Galapagos NV as Chief Financial Officer and member of the Executive Committee on July 7, 2025. Mr. Cox is a seasoned financial and strategic executive with nearly two decades of leadership experience across biotechnology, capital markets, and M&A/corporate development. Most recently, he served as Executive Vice President and Chief Financial Officer at Horizon Therapeutics plc, where he played a pivotal role in the company’s $28 billion acquisition by Amgen. In this role, he led global corporate finance, investor relations, IT, and real estate functions, and was instrumental in driving the transformation of Horizon into a fully integrated global biopharmaceutical company. Prior to his role as Horizon’s Chief Financial Officer, Aaron served as Horizon’s Head of Corporate Development and Chief of Staff to the Chief Executive Officer, supporting capital markets strategy, M&A execution and business development. His earlier career spans investment banking roles at BMO Capital Markets, JMP Securities and Stout Risius Ross Advisors. Mr. Cox holds an MBA with High Honors from the University of Chicago Booth School of Business and a Bachelor’s degree in Finance from the University of Notre Dame, graduating magna cum laude.

Fred Blakeslee

joined Galapagos NV as General Counsel and member of the Executive Committee in October 2025. He is a seasoned legal executive with deep experience leading legal functions in the biopharmaceutical industry. Prior to Galapagos NV, Fred served as Vice President, Transactions, Legal at AbbVie Inc., where he led legal teams supporting global business development and alliance management. In this role, he oversaw complex mergers, acquisitions, licensing, and collaborations, including AbbVie’s landmark $63 billion acquisition of Allergan PLC and numerous high-profile partnerships with companies such as Boehringer Ingelheim and Genmab. Fred was also a trusted advisor on issues involving government affairs, antitrust, and corporate strategy, and he played a key role in creating the AbbVie Legal Academies, promoting opportunities for law students at HBCUs. He also served on AbbVie’s PAC Board of Directors and was actively involved in industry-wide advocacy efforts. Fred began his career at Kirkland & Ellis LLP and later held senior roles at leading law firms, advising on private equity, corporate, and securities transactions across the biopharmaceutical and other industries. Fred earned his Juris Doctor, cum laude, from Northwestern University School of Law, where he was inducted into the Order of the Coif. He also holds dual Bachelor’s degrees in Mathematics and Political Science, magna cum laude, from The Ohio State University. Fred is based in Chicago, Illinois, and has conversational proficiency in French.

Annelies Missotten*

was appointed as Chief Human Resources Officer and member of the Executive Committee at Galapagos as per January 1, 2023. She joined Galapagos as Vice President Human Resources in February 2018 to transform and build an expert HR team to enable business growth, and leading the transformation of Galapagos into an integrated biopharmaceutical company with an international set- up. In 2020, she was appointed Senior Vice President Human Resources and strategic advisor to the CEO and Executive Committee. Before joining Galapagos, she held various senior global HR positions at GSK. She started her career at Proximus, and acquired deep expertise over time in key HR Centres of Expertise, including Training & Development, Talent Acquisition and Reward, and HR Business partnership roles. Ms. Missotten holds a Master's Degree in Roman Philology from KU Leuven, a DEA in Italian Culture and Linguistics from the Paris IV Sorbonne (France) and L’Università Cattolica di Milano. Over the years, she completed her education with several systemic psychology and coaching certifications and business courses, amongst others, from INSEAD, Fontainebleau (France).

* Effective December 31, 2025, the mandate of Ms. Missotten as Executive Committee member ended.

About the Executive Committee

The following table sets forth certain information with respect to the members of our Executive Committee during the financial year ending December 31, 2025:

The Executive Committee has been entrusted by the Board of Directors with the executive management and running of the Company. Without prejudice to the overall responsibility and tasks of the Board of Directors regarding the management and control of the Company, the key responsibilities of the Executive Committee include the following matters (without limitation): the research, identification and development of strategic possibilities and proposals which may contribute to the Company’s development in general, the management of the Company and Galapagos group, the supervision of the actual performance of the business compared to its strategic goals, plans and budgets, and the support of the CEO with the day-to-day management of the Company and Galapagos group.

The Executive Committee meets as often as necessary to ensure its effective operation, and in principle at least once per month.

The Executive Committee is supported by a Management Committee, i.e., an informal committee providing advice and assistance to the Executive Committee. The Management Committee consists of the Executive Committee members and certain members of the Company’s senior management thereto appointed by the Executive Committee. With the exception of the Executive Committee members, the members of the Management Committee are not Directors or persons charged with the leadership or daily management of the Company as defined by Belgian law.

On December 31, 2025, the Executive Committee consisted of the members identified in the table above, representing different nationalities and age categories. Furthermore, the Executive Committee members have different educational backgrounds, as described in each of their biographies (see above).

The members of the Executive Committee are appointed by the Board of Directors upon recommendation of the Nomination Committee. In proposing candidates for the Executive Committee, particular consideration is given to educational and professional background, complementary skills, knowledge and experience, as well as diversity in age, gender and nationality.