Appointment of a Management Board Member

Date: 31 August 2026

Subject: Appointment of a Management Board Member

Legal basis: Article 56(1)(2) of the Act on Public Offering – current and periodic information

Text of the report:

The Management Board of Diagnostyka S.A., with its registered office in Kraków (the “Company”), announces that on 31 August 2026, the Extraordinary General Meeting of the Company adopted Resolution No. 3 on appointing Mr Jakub Tatak to the Management Board of the Company for the term of office commencing on 2 September 2021 and entrusting him with the function of Vice President of the Management Board. Resolution No. 3 shall enter into force on 1 September 2026, and the appointment shall become effective and produce legal effects as of that date.

According to the statement submitted to the Company, Mr Jakub Tatak does not conduct any business activity that is competitive with the Company, does not participate in a company competitive with Diagnostyka S.A. as a partner in a civil law partnership, partnership or limited liability/joint-stock company, nor does he participate in a competitive legal entity as a member of its governing body. He is also not listed in the Register of Insolvent Debtors maintained pursuant to the provisions of the National Court Register Act.

The Management Board of the Company hereby provides, as an attachment, the curriculum vitae of Mr Jakub Tatak.

Detailed legal basis: § 5(6) of the Regulation of the Minister of Finance of 6 June 2025 on current and periodic information provided by issuers of securities and the conditions for recognizing as equivalent information required under the laws of a non-member state.

For the Company:

Marta Rogalska-Kupiec – Vice President of the Management Board

Dariusz Zowczak – Vice President of the Management Board