Bilfinger SE: Release according to Article 40, Section 1 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution

EQS Voting Rights Announcement: Bilfinger SE Bilfinger SE: Release according to Article 40, Section 1 of the WpHG [the German Securities Trading Act] with the objective of Europe-wide distribution 11.12.2025 / 16:24 CET/CEST Dissemination of a Voting Rights Announcement transmitted by EQS News - a service of EQS Group. The issuer is solely responsible for the content of this announcement.

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Notification of Major Holdings

1. Details of issuer

Name:	Bilfinger SE
Street:	Oskar-Meixner-Straße 1
Postal code:	68163
City:	Mannheim Germany
Legal Entity Identifier (LEI):	529900H0HULEN2BZ4604

2. Reason for notification

X	Acquisition/disposal of shares with voting rights
	Acquisition/disposal of instruments
	Change of breakdown of voting rights
X	Other reason: voluntary group notification with triggered threshold on subsidiary level

3. Details of person subject to the notification obligation

Legal entity: Morgan Stanley City of registered office, country: Wilmington, Delaware, United States of America (USA)

4. Names of shareholder(s)
holding directly 3% or more voting rights, if different from 3.

Morgan Stanley & Co. International plc

5. Date on which threshold was crossed or reached:

04 Dec 2025