Notification of an increase in the number of shares held in the Company

Current report no. 21/2026 

Drafting date: 20 April 2026 

Subject: Notification of an increase in the number of shares held in the Company 

Legal basis: Article 70(1) of the Act on Public Offering - acquisition or disposal of a significant block of shares 

The Management Board of Captor Therapeutics S.A., with its registered office in Wrocław (the “Company”), announces that on 20 April 2026 the Company received a notification submitted pursuant to Article 69(1)(1) in conjunction with Article 87(1)(2b) of the Act of 29 July 2005 on Public Offerings and the Conditions for Introducing Financial Instruments to Organised Trading and on Public Companies.  

The notification was submitted by PKO BP Bankowy Powszechne Towarzystwo Emerytalne Spółka Akcyjna (“PKO”) and concerns an increase in the share of the total number of votes in the Company. According to the content of the document received, the change in shareholding concerns: 

1. PKO – in relation to all funds managed by it (in total, over 5% of the total number of votes) 

2. PKO BP Bankowy Otwarty Fundusz Emerytalny, which has directly exceeded the 5% threshold of the total number of votes at the Company’s general meeting 

The text of the notification is attached to this report.