Notice of convocation of the Extraordinary General Shareholders Meeting and documents related to the Extraordinary General Meeting

Current report No. 37/2025

Date of preparation: 24 September 2025

Subject: Notice of convocation of the Extraordinary General Shareholders Meeting and documents related to the Extraordinary General Meeting

Legal basis: Article 56 sec. 1 point 2 of the Public Offering Act – current and periodical information

The Management Board of Captor Therapeutics S.A., based in Wrocław (the "Company"), pursuant to Article 398, Article 399 § 1 in connection with Articles 402¹ and 402² of the Commercial Companies Code, informs that the Extraordinary General Meeting of the Company was convened for 22 October 2025, at 2:00 P.M. and will be held in Wrocław at ul. Duńska 9 (54-427 Wrocław), in the DELTA building.

The Management Board of the Company encloses the following to this report:

1. the full text of the notice with the agenda of the Extraordinary General Meeting (appendix no. 1);

2. draft resolutions to be discussed at the Extraordinary General Meeting of the Company (appendix
no. 2);

3. Opinion of the Management Board of “Captor Therapeutics” spółka akcyjna with registered office in Wrocław regarding the granting of authorization to the Management Board to exclude pre-emptive rights, in whole or in part, in connection with the increase of the Company’s share capital within the authorized capital, subject to the consent of the Company’s Supervisory Board (appendix No. 3);

4. specimen power of attorney (appendix No. 4);

5. specimen instruction to exercise voting rights by proxy (appendix no. 4);

6. information on the total number of votes (appendix no. 6).