EQS-PVR: STRABAG SE: Release according to Article 135, Section 2 BörseG with the objective of Europe-wide distribution

1. Issuer: STRABAG SE 2. Reason for the notification:   Acquisition or disposal of voting rights 3. Person subject to notification obligation Oleg Deripaska 4. Name of shareholder(s):    MKAO Rasperia Trading Limited 5. Date on which the threshold was crossed or reached: 22.3.2024

8. Information in relation to the person subject to the notification obligation: Full chain of controlled undertakings through which the voting rights and/or the financial/other instruments are effectively held starting with the ultimate controlling natural person or legal entity:

9. In case of proxy voting Date of general meeting: - Voting rights after general meeting: - is equivalent to - voting rights.

10. Sonstige Kommentare: This notification is an amendment and clarification to the latest major holdings notification submitted on 26 March 2024. This notification is submitted due to completion of the sale and purchase agreement relating to 100% of the share capital of MKAO RASPERIA TRADING LIMITED between Joint Stock Company ILIADIS and MKAO Valtoura Holdings Limited dated 14 December 2023 (the signing of which was notified on 18 December 2023 as amended on 8 January 2024). As a result MKAO Rasperia Trading Limited is not (directly or indirectly) controlled by Mr. Deripaska and, therefore, it is not listed in line 8.  This notification takes into account the right of first refusal (as a financial instrument pursuant to Sec 131 para. 1 no. 1 Stock Exchange Act 2018) arising from the syndicate agreement dated 23.04.2007 (last amended on 15.03.2013) and terminated by Haselsteiner Familien-Privatstiftung with effect as of the end of 31.12.2022. Notification of such right of first refusal is made merely as a precaution for the sake of formal completeness. MKAO Rasperia Trading Limited takes the legal position that the rights of first refusal arising from the syndicate agreement do not continue to apply after termination of the syndicate agreement. Total number of voting rights of issuer (line 6) has changed comparing to the previous notification due to the implementation of non-cash capital increase of Strabag SE registered on 21 March 2024. MKAO Rasperia Trading Limited takes the legal position that such non-cash capital increase is not valid and challenges it.