Bilfinger SE: Share Buyback

Disclosure according to Art. 5 para. 1(b), para 3 of Regulation (EU) No. 596/2014 in connection with Art. 2 para. 2 and 3 of Delegated Regulation (EU) 2016/1052

Share buyback – 17. Interim Reporting

In the time period from May 15, 2025 until and including May 16, 2025, a number of 5,782 shares were bought back within the framework of the share buyback of Bilfinger SE. The beginning of the share buyback on January 21, 2025 was disclosed on January 20, 2025 pursuant to Art. 5 para. 1 of Regulation (EU) No. 596/2014, Art. 2 para. 1 of Delegated Regulation (EU) 2016/1052.

Day of purchase Aggregated volume in shares Weighted average price [EUR] 15. May 2025 2,917 72.3409 16. May 2025 2,865 73.6593

The transactions are published in a detailed form on the website of Bilfinger SE (http://www.Bilfinger.com).

The total volume of shares which have been bought back within the framework of the share buyback in the time period of January 21, 2025, until and including May 16, 2025, amounts to 301,551 shares.

The purchase of the shares of Bilfinger SE is carried out exclusively via the stock exchange by a bank commissioned by Bilfinger SE.