Isabel Derison, CCSA, CIA, CRMA, IFA, RFA

Isabel Derison is the 2026-27 Lead Director, National Institutes, on The IIA’s Global Board of Directors. She also served as President of the Board of Directors with IIA Belgium (2021-2024) and is a Partner in Business Risk Services at Grant Thornton Belgium.

Isabel has more than 20 years of experience in internal and external auditing. She began her career as an external auditor at KPMG and, after six years, transitioned to an internal audit role at SD Worx (Payroll/HR). In 2017, she established the internal audit function at ZNA, the largest hospital network in Belgium. In 2022, she joined the partner team at Grant Thornton Belgium.

Isabel is a Certified Internal Auditor (CIA), holds a Certification in Risk Management Assurance (CRMA) and a Certification in Control Self-Assessment (CCSA), and is a Registered Fraud Auditor (RFA) at the Institute of Fraud Auditors (IFA Belgium). She is also a subject matter expert in ESG and sustainability.

She holds a master’s degree in applied economics, with a specialization in Accountancy, Tax, and Internal Audit, from the University of Antwerp. She also graduated from Vlerick as part of the inaugural cohort of its ‘Taking the Lead in Sustainability’ program.