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

29.06.2026 / 17:12 CET/CEST

Dissemination of a Voting Rights Announcement transmitted by - a service of .

The issuer is solely responsible for the content of this announcement.

Notification of Major Holdings1. Details of issuer
Name:Bilfinger SEStreet:Oskar-Meixner-Straße 1Postal code:68163City:MannheimGermanyLegal Entity Identifier (LEI):529900H0HULEN2BZ4604
2. Reason for notification
 Acquisition/disposal of shares with voting rights Acquisition/disposal of instruments Change of breakdown of voting rightsXOther reason:voluntary group notification with triggered threshold on subsidiary level
3. Details of person subject to the notification obligation

Legal entity: Wellington Management Group LLPCity of registered office, country: Boston, United States of America (USA)

4. Names of shareholder(s) holding directly 3% or more voting rights, if different from 3.5. Date on which threshold was crossed or reached:

22 Jun 2026

6. Total positions
 % of voting rights attached to shares (total of 7.a.)% of voting rights through instruments (total of 7.b.1 + 7.b.2)Total of both in % (7.a. + 7.b.)Total number of voting rights pursuant to Sec. 41 WpHGNew4.50 %0.02 %4.52 %37606372Previous notification3.002626788886 %0.01 %3.01 %/
7. Details on total positions a. Voting rights attached to shares (Sec. 33, 34 WpHG)
ISINAbsoluteIn % Direct (Sec. 33 WpHG)Indirect (Sec. 34 WpHG)Direct (Sec. 33 WpHG)Indirect (Sec. 34 WpHG)DE0005909006016923670.00 %4.50 %Total16923674.50 %
b.1. Instruments according to Sec. 38 (1) no. 1 WpHG
Type of instrumentExpiration or maturity dateExercise or conversion periodVoting rights absoluteVoting rights in %00.00 %  Total00.00 %
b.2. Instruments according to Sec. 38 (1) no. 2 WpHG
Type of instrumentExpiration or maturity dateExercise or conversion periodCash or physical settlementVoting rights absoluteVoting rights in %Equity Swap05/05/202805/05/2028Cash settlement50130.01 %Equity Swap20/05/203320/05/2033Cash settlement25830.01 %Equity Swap15/05/203315/05/2033Cash settlement3900 %   Total79860.02 %
8. Information in relation to the person subject to the notification obligation
 Person subject to the notification obligation is not controlled nor does it control any other undertaking(s) that directly or indirectly hold(s) an interest in the (underlying) issuer (1.).XFull chain of controlled undertakings starting with the ultimate controlling natural person or legal entity:
Name% of voting rights (if at least 3% or more)% of voting rights through instruments (if at least 5% or more)Total of both (if at least 5% or more)Wellington Management Group LLP % % %Wellington Group Holdings LLP % % %Wellington Investment Advisors Holdings LLP % % %Wellington Management Company LLP3.59 % % %Wellington Global Multi Strategy Fund % % %- % % %Wellington Management Group LLP % % %Wellington Group Holdings LLP % % %Wellington Investment Advisors Holdings LLP % % %Wellington Management Global Holdings, Ltd. % % %Wellington Management International Ltd.3.01 % % %- % % %Wellington Management Group LLP % % %Wellington Group Holdings LLP % % %Wellington Management Funds Holdings LLP % % %Wellington Alternative Investments LLC % % %Wellington Global Multi-Strategy Master Fund (Cayman) L.P. % % %- % % %Wellington Management Group LLP % % %Wellington Group Holdings LLP % % %Wellington Management Funds Holdings LLP % % %Wellington Alternative Investments LLC % % %Wellington Global Multi-Strategy Fund, L.P. % % %- % % %Wellington Management Group LLP % % %Wellington Group Holdings LLP % % %Wellington Management Funds Holdings LLP % % %Wellington Alternative Investments LLC % % %Wellington Strategic European Equity Long/Short Master Fund (Cayman) L.P. % % %- % % %Wellington Management Group LLP % % %Wellington Group Holdings LLP % % %Wellington Management Funds Holdings LLP % % %Wellington Alternative Investments LLC % % %Wellington Strategic European Equity Long/Short Fund (Cayman) L.P. % % %- % % %Wellington Management Group LLP % % %Wellington Group Holdings LLP % % %Wellington Management Funds Holdings LLP % % %Wellington Alternative Investments LLC % % %Wellington Strategic European Equity Long/Short Fund, L.P. % % %
9. In case of proxy voting according to Sec. 34 para. 3 WpHG (only in case of attribution of voting rights in accordance with Sec. 34 para. 1 sent. 1 No. 6 WpHG) Date of general meeting: Holding total positions after general meeting (6.) after annual general meeting:
Proportion of voting rights %Proportion of instruments %Total of both %
10. Other explanatory remarks: Date

26 Jun 2026

29.06.2026 CET/CEST The EQS Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases.

Language:EnglishCompany:Bilfinger SEOskar-Meixner-Straße 168163 MannheimGermanyInternet:http://www.bilfinger.com
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