Appointment of a new member of the Supervisory Board of mBank S.A.

The Management Board of mBank S.A. informs that on 19 June 2026, the Supervisory Board of the Bank elected Ms. Karolina Mitraszewska as a member of the Supervisory Board of the Bank, for the current term of office starting from 19 June 2026.

Ms. Karolina Mitraszewska is a senior executive with over 25 years of experience in the financial sector, banking, strategic advisory, investments, innovation and the transformation of large organisations operating in regulated environments. She was the President of the Management Board in PFR Ventures, Vice-President of the Management Board and a Member of the Management Board at Nest Bank, and also held managerial positions at, among others, Nest Bank, Santander Bank Polska and EY.

She has broad management and supervisory experience covering strategy, corporate governance, finance, investments, innovation, risk management, operations, technology, data, cybersecurity, business model transformation and organisational effectiveness. Throughout her career, she has been involved in leading complex transformation programmes, improving profitability and operational efficiency, developing digital banking, automating processes, building modern operating models and strengthening organisational resilience.

Ms. Karolina Mitraszewska holds a PhD in Economics from the SGH Warsaw School of Economics and a Global Executive MBA from INSEAD. She is a graduate of the SGH Warsaw School of Economics in International Economic and Political Relations and in Marketing and Management. She also completed the Oxford Private Equity Programme at Saïd Business School University of Oxford, and the International Business programme at DIS in Copenhagen.

She is a member of the Association of Independent Non-Executive Directors and a member of the LiderSHE Association. She cooperates with Vital Voices, Strong Women in IT and CIONET.

According to the information available to the Bank's Management Board, Ms. Karolina Mitraszewska does not conduct any activity competitive to the Bank, and does not participate in a company competitive to the Bank as a partner in a civil partnership, partnership, or capital company, and does not participate in a legal person competitive to the Bank as a member of its body.

In accordance with the criteria used by the Bank, Ms. Karolina Mitraszewska is an independent member of the Supervisory Board of the Bank.

Ms. Karolina Mitraszewska is not listed in the Register of Insolvent Debtors kept pursuant to the National Court Register Act.