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

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

Ms. KarolinaMitraszewska is asenior executive with over 25years of experience in the financial sector, banking, strategicadvisory, investments, innovation and the transformation of largeorganisations operating in regulated environments. She was the Presidentof the Management Board in PFR Ventures, Vice-President of theManagement Board and a Member of the Management Board at Nest Bank, andalso held managerial positions at, among others, Nest Bank, SantanderBank Polska and EY.

She has broadmanagement and supervisory experience covering strategy, corporategovernance, finance, investments, innovation, risk management,operations, technology, data, cybersecurity, business modeltransformation and organisational effectiveness. Throughout her career,she has been involved in leading complex transformation programmes,improving profitability and operational efficiency, developing digitalbanking, automating processes, building modern operating models andstrengthening organisational resilience.

Ms. KarolinaMitraszewska holds a PhD in Economics from the SGH Warsaw School ofEconomics and a Global Executive MBA from INSEAD. She is a graduate ofthe SGH Warsaw School of Economics in International Economic andPolitical Relations and in Marketing and Management. She also completedthe Oxford Private Equity Programme at Sad Business School Universityof Oxford, and the International Business programme at DIS in Copenhagen.

She is a memberof the Association of Independent Non-Executive Directors anda member of the LiderSHEAssociation. She cooperates with Vital Voices, Strong Women in IT andCIONET.

According tothe information available to the Bank's Management Board, Ms. KarolinaMitraszewska does not conduct any activity competitive to the Bank, anddoes not participate in a company competitive to the Bank as a partnerin a civil partnership, partnership, or capital company, and does notparticipate in a legal person competitive to the Bank as a member of itsbody.

In accordancewith the criteria used by the Bank, Ms. Karolina Mitraszewska is anindependent member of the Supervisory Board of the Bank.