Shareholders Holding at Least 5% of the Votes at the Extraordinary General Meeting of the Company on 31 August 2026

Date: 31 August 2026

Subject: Shareholders Holding at Least 5% of the Votes at the Extraordinary General Meeting of the Company on 31 August 2026

Legal basis: Article 70(3) of the Act on Public Offering – list of shareholders holding at least 5% of the total number of votes at the general meeting

Text of the report:

The Management Board of Diagnostyka S.A., with its registered office in Kraków (the “Company”), hereby announces that at the Extraordinary General Meeting of the Company convened for 31 August 2026, the shareholders holding at least 5% of the total number of votes were:

Jakub Swadźba, who was entitled to exercise voting rights attached to 3,186,189 shares, carrying the right to 6,372,378 votes, representing approximately 15.76% of the votes represented at the Extraordinary General Meeting and 12.83% of the total number of votes;

ACER CAPITAL PARTNERS SCSP, which was entitled to exercise voting rights attached to 6,372,278 shares, carrying the right to 12,744,556 votes, representing approximately 31.52% of the votes represented at the Extraordinary General Meeting and 25.65% of the total number of votes;

ACACIA CAPITAL PARTNERS SCSP, which was entitled to exercise voting rights attached to 6,372,278 shares, carrying the right to 12,744,556 votes, representing approximately 31.52% of the votes represented at the Extraordinary General Meeting and 25.65% of the total number of votes;

NATIONALE-NEDERLANDEN OTWARTY FUNDUSZ EMERYTALNY, which was entitled to exercise voting rights attached to 2,345,515 shares, carrying the right to 2,345,515 votes, representing approximately 5.80% of the votes represented at the Extraordinary General Meeting and 4.72% of the total number of votes.

For the Company:

Marta Rogalska-Kupiec – Vice President of the Management Board

Dariusz Zowczak – Vice President of the Management Board